/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 true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount10_file-11.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-19 12:34:36,613 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-19 12:34:36,678 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-19 12:34:36,682 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-19 12:34:36,682 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-19 12:34:36,703 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-19 12:34:36,703 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-19 12:34:36,703 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-19 12:34:36,704 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-19 12:34:36,706 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-19 12:34:36,707 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-19 12:34:36,707 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-19 12:34:36,707 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-19 12:34:36,708 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-19 12:34:36,709 INFO L153 SettingsManager]: * Use SBE=true [2023-12-19 12:34:36,709 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-19 12:34:36,709 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-19 12:34:36,709 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-19 12:34:36,709 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-19 12:34:36,710 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-19 12:34:36,710 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-19 12:34:36,710 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-19 12:34:36,711 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-19 12:34:36,711 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-19 12:34:36,711 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-19 12:34:36,711 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-19 12:34:36,711 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-19 12:34:36,711 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-19 12:34:36,712 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-19 12:34:36,712 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-19 12:34:36,712 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-19 12:34:36,713 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-19 12:34:36,713 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 12:34:36,713 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-19 12:34:36,713 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-19 12:34:36,713 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-19 12:34:36,713 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-19 12:34:36,713 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-19 12:34:36,713 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-19 12:34:36,713 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-19 12:34:36,714 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-19 12:34:36,714 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-19 12:34:36,714 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-19 12:34:36,714 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-19 12:34:36,902 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-19 12:34:36,930 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-19 12:34:36,932 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-19 12:34:36,933 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-19 12:34:36,933 INFO L274 PluginConnector]: CDTParser initialized [2023-12-19 12:34:36,934 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount10_file-11.i [2023-12-19 12:34:37,833 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-19 12:34:37,991 INFO L384 CDTParser]: Found 1 translation units. [2023-12-19 12:34:37,992 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount10_file-11.i [2023-12-19 12:34:37,998 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/007f12636/c011a4c3e6ca4648b18c772935f79ace/FLAG37c42a130 [2023-12-19 12:34:38,012 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/007f12636/c011a4c3e6ca4648b18c772935f79ace [2023-12-19 12:34:38,014 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-19 12:34:38,015 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-19 12:34:38,017 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-19 12:34:38,017 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-19 12:34:38,020 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-19 12:34:38,021 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 12:34:38" (1/1) ... [2023-12-19 12:34:38,021 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72ef7e04 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:34:38, skipping insertion in model container [2023-12-19 12:34:38,022 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 12:34:38" (1/1) ... [2023-12-19 12:34:38,038 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-19 12:34:38,138 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_operatoramount_amount10_file-11.i[915,928] [2023-12-19 12:34:38,161 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 12:34:38,169 INFO L202 MainTranslator]: Completed pre-run [2023-12-19 12:34:38,177 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_operatoramount_amount10_file-11.i[915,928] [2023-12-19 12:34:38,182 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 12:34:38,191 INFO L206 MainTranslator]: Completed translation [2023-12-19 12:34:38,191 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:34:38 WrapperNode [2023-12-19 12:34:38,191 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-19 12:34:38,192 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-19 12:34:38,192 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-19 12:34:38,192 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-19 12:34:38,196 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:34:38" (1/1) ... [2023-12-19 12:34:38,200 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:34:38" (1/1) ... [2023-12-19 12:34:38,212 INFO L138 Inliner]: procedures = 26, calls = 21, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 63 [2023-12-19 12:34:38,212 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-19 12:34:38,213 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-19 12:34:38,213 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-19 12:34:38,213 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-19 12:34:38,222 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:34:38" (1/1) ... [2023-12-19 12:34:38,222 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:34:38" (1/1) ... [2023-12-19 12:34:38,223 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:34:38" (1/1) ... [2023-12-19 12:34:38,230 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]. [2023-12-19 12:34:38,230 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:34:38" (1/1) ... [2023-12-19 12:34:38,230 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:34:38" (1/1) ... [2023-12-19 12:34:38,236 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:34:38" (1/1) ... [2023-12-19 12:34:38,238 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:34:38" (1/1) ... [2023-12-19 12:34:38,239 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:34:38" (1/1) ... [2023-12-19 12:34:38,240 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:34:38" (1/1) ... [2023-12-19 12:34:38,241 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-19 12:34:38,242 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-19 12:34:38,242 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-19 12:34:38,242 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-19 12:34:38,243 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:34:38" (1/1) ... [2023-12-19 12:34:38,246 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 12:34:38,255 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 12:34:38,264 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) [2023-12-19 12:34:38,273 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 [2023-12-19 12:34:38,287 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-19 12:34:38,287 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-19 12:34:38,288 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-19 12:34:38,288 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-19 12:34:38,288 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-19 12:34:38,288 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-19 12:34:38,329 INFO L241 CfgBuilder]: Building ICFG [2023-12-19 12:34:38,331 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-19 12:34:38,485 INFO L282 CfgBuilder]: Performing block encoding [2023-12-19 12:34:38,506 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-19 12:34:38,506 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-19 12:34:38,506 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 12:34:38 BoogieIcfgContainer [2023-12-19 12:34:38,506 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-19 12:34:38,508 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-19 12:34:38,508 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-19 12:34:38,512 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-19 12:34:38,512 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.12 12:34:38" (1/3) ... [2023-12-19 12:34:38,512 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76f7c610 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 12:34:38, skipping insertion in model container [2023-12-19 12:34:38,512 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:34:38" (2/3) ... [2023-12-19 12:34:38,512 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76f7c610 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 12:34:38, skipping insertion in model container [2023-12-19 12:34:38,513 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 12:34:38" (3/3) ... [2023-12-19 12:34:38,513 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount10_file-11.i [2023-12-19 12:34:38,524 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-19 12:34:38,524 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-19 12:34:38,552 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-19 12:34:38,556 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;@436a20c0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-19 12:34:38,556 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-19 12:34:38,559 INFO L276 IsEmpty]: Start isEmpty. Operand has 27 states, 16 states have (on average 1.4375) internal successors, (23), 17 states have internal predecessors, (23), 8 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-12-19 12:34:38,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-12-19 12:34:38,564 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 12:34:38,564 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 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] [2023-12-19 12:34:38,565 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 12:34:38,571 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 12:34:38,572 INFO L85 PathProgramCache]: Analyzing trace with hash -1320620100, now seen corresponding path program 1 times [2023-12-19 12:34:38,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 12:34:38,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263735808] [2023-12-19 12:34:38,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 12:34:38,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 12:34:38,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:34:38,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 12:34:38,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:34:38,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 12:34:38,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:34:38,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-19 12:34:38,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:34:38,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-12-19 12:34:38,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:34:38,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-12-19 12:34:38,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:34:38,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-12-19 12:34:38,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:34:38,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-19 12:34:38,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:34:38,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-12-19 12:34:38,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:34:38,727 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-12-19 12:34:38,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 12:34:38,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263735808] [2023-12-19 12:34:38,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [263735808] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 12:34:38,728 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 12:34:38,728 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 12:34:38,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097398767] [2023-12-19 12:34:38,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 12:34:38,732 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-19 12:34:38,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 12:34:38,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-19 12:34:38,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-19 12:34:38,755 INFO L87 Difference]: Start difference. First operand has 27 states, 16 states have (on average 1.4375) internal successors, (23), 17 states have internal predecessors, (23), 8 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-19 12:34:38,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 12:34:38,793 INFO L93 Difference]: Finished difference Result 51 states and 84 transitions. [2023-12-19 12:34:38,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-19 12:34:38,796 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 2 states have call successors, (8) Word has length 50 [2023-12-19 12:34:38,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 12:34:38,801 INFO L225 Difference]: With dead ends: 51 [2023-12-19 12:34:38,801 INFO L226 Difference]: Without dead ends: 25 [2023-12-19 12:34:38,803 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-19 12:34:38,806 INFO L413 NwaCegarLoop]: 31 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, 31 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 [2023-12-19 12:34:38,806 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 31 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 12:34:38,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2023-12-19 12:34:38,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2023-12-19 12:34:38,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 15 states have (on average 1.2) internal successors, (18), 15 states have internal predecessors, (18), 8 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-12-19 12:34:38,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 34 transitions. [2023-12-19 12:34:38,829 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 34 transitions. Word has length 50 [2023-12-19 12:34:38,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 12:34:38,829 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 34 transitions. [2023-12-19 12:34:38,829 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-19 12:34:38,829 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 34 transitions. [2023-12-19 12:34:38,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-12-19 12:34:38,831 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 12:34:38,831 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 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] [2023-12-19 12:34:38,831 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-19 12:34:38,831 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 12:34:38,832 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 12:34:38,832 INFO L85 PathProgramCache]: Analyzing trace with hash 1285783484, now seen corresponding path program 1 times [2023-12-19 12:34:38,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 12:34:38,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403053059] [2023-12-19 12:34:38,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 12:34:38,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 12:34:38,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:34:39,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 12:34:39,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:34:39,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 12:34:39,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:34:39,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-19 12:34:39,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:34:39,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-12-19 12:34:39,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:34:39,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-12-19 12:34:39,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:34:39,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-12-19 12:34:39,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:34:39,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-19 12:34:39,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:34:39,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-12-19 12:34:39,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:34:39,102 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-12-19 12:34:39,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 12:34:39,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1403053059] [2023-12-19 12:34:39,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1403053059] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 12:34:39,103 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 12:34:39,103 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-19 12:34:39,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83806428] [2023-12-19 12:34:39,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 12:34:39,107 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 12:34:39,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 12:34:39,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 12:34:39,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 12:34:39,108 INFO L87 Difference]: Start difference. First operand 25 states and 34 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2023-12-19 12:34:39,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 12:34:39,215 INFO L93 Difference]: Finished difference Result 31 states and 40 transitions. [2023-12-19 12:34:39,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-19 12:34:39,216 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 50 [2023-12-19 12:34:39,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 12:34:39,217 INFO L225 Difference]: With dead ends: 31 [2023-12-19 12:34:39,218 INFO L226 Difference]: Without dead ends: 29 [2023-12-19 12:34:39,218 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-19 12:34:39,219 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 4 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 12:34:39,220 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 79 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 12:34:39,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2023-12-19 12:34:39,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 27. [2023-12-19 12:34:39,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 17 states have internal predecessors, (20), 8 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-12-19 12:34:39,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 36 transitions. [2023-12-19 12:34:39,230 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 36 transitions. Word has length 50 [2023-12-19 12:34:39,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 12:34:39,232 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 36 transitions. [2023-12-19 12:34:39,232 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2023-12-19 12:34:39,232 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 36 transitions. [2023-12-19 12:34:39,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-12-19 12:34:39,234 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 12:34:39,235 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 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] [2023-12-19 12:34:39,235 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-19 12:34:39,235 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 12:34:39,236 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 12:34:39,237 INFO L85 PathProgramCache]: Analyzing trace with hash 1195539316, now seen corresponding path program 1 times [2023-12-19 12:34:39,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 12:34:39,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [958086949] [2023-12-19 12:34:39,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 12:34:39,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 12:34:39,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:34:39,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 12:34:39,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:34:39,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 12:34:39,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:34:39,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-19 12:34:39,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:34:39,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-12-19 12:34:39,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:34:39,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-12-19 12:34:39,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:34:39,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-12-19 12:34:39,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:34:39,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-19 12:34:39,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:34:39,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-12-19 12:34:39,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:34:39,657 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-12-19 12:34:39,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 12:34:39,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [958086949] [2023-12-19 12:34:39,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [958086949] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 12:34:39,659 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 12:34:39,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-19 12:34:39,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677213695] [2023-12-19 12:34:39,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 12:34:39,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-19 12:34:39,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 12:34:39,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-19 12:34:39,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-19 12:34:39,663 INFO L87 Difference]: Start difference. First operand 27 states and 36 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2023-12-19 12:34:39,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 12:34:39,802 INFO L93 Difference]: Finished difference Result 35 states and 44 transitions. [2023-12-19 12:34:39,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-19 12:34:39,802 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 51 [2023-12-19 12:34:39,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 12:34:39,803 INFO L225 Difference]: With dead ends: 35 [2023-12-19 12:34:39,803 INFO L226 Difference]: Without dead ends: 33 [2023-12-19 12:34:39,803 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-19 12:34:39,804 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 9 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 12:34:39,804 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 98 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 12:34:39,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2023-12-19 12:34:39,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 27. [2023-12-19 12:34:39,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 17 states have internal predecessors, (20), 8 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-12-19 12:34:39,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 36 transitions. [2023-12-19 12:34:39,807 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 36 transitions. Word has length 51 [2023-12-19 12:34:39,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 12:34:39,807 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 36 transitions. [2023-12-19 12:34:39,808 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2023-12-19 12:34:39,808 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 36 transitions. [2023-12-19 12:34:39,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-12-19 12:34:39,808 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 12:34:39,808 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 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] [2023-12-19 12:34:39,808 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-19 12:34:39,809 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 12:34:39,809 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 12:34:39,809 INFO L85 PathProgramCache]: Analyzing trace with hash 1195598898, now seen corresponding path program 1 times [2023-12-19 12:34:39,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 12:34:39,809 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1080283572] [2023-12-19 12:34:39,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 12:34:39,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 12:34:39,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:34:40,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 12:34:40,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:34:40,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 12:34:40,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:34:40,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-19 12:34:40,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:34:40,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-12-19 12:34:40,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:34:40,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-12-19 12:34:40,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:34:40,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-12-19 12:34:40,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:34:40,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-19 12:34:40,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:34:40,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-12-19 12:34:40,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:34:40,166 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-12-19 12:34:40,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 12:34:40,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1080283572] [2023-12-19 12:34:40,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1080283572] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 12:34:40,166 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 12:34:40,167 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-19 12:34:40,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885174745] [2023-12-19 12:34:40,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 12:34:40,167 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-19 12:34:40,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 12:34:40,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-19 12:34:40,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-19 12:34:40,168 INFO L87 Difference]: Start difference. First operand 27 states and 36 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2023-12-19 12:34:40,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 12:34:40,318 INFO L93 Difference]: Finished difference Result 33 states and 42 transitions. [2023-12-19 12:34:40,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-19 12:34:40,318 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 51 [2023-12-19 12:34:40,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 12:34:40,319 INFO L225 Difference]: With dead ends: 33 [2023-12-19 12:34:40,319 INFO L226 Difference]: Without dead ends: 0 [2023-12-19 12:34:40,319 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-19 12:34:40,320 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 7 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 12:34:40,320 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 95 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 12:34:40,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-12-19 12:34:40,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-12-19 12:34:40,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 12:34:40,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-12-19 12:34:40,321 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 51 [2023-12-19 12:34:40,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 12:34:40,321 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-12-19 12:34:40,321 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2023-12-19 12:34:40,321 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-12-19 12:34:40,321 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-12-19 12:34:40,323 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-19 12:34:40,323 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-19 12:34:40,324 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-12-19 12:34:40,337 INFO L899 garLoopResultBuilder]: For program point L31(lines 31 35) no Hoare annotation was computed. [2023-12-19 12:34:40,338 INFO L899 garLoopResultBuilder]: For program point L19(line 19) no Hoare annotation was computed. [2023-12-19 12:34:40,338 INFO L899 garLoopResultBuilder]: For program point L19-1(line 19) no Hoare annotation was computed. [2023-12-19 12:34:40,338 INFO L899 garLoopResultBuilder]: For program point L19-3(line 19) no Hoare annotation was computed. [2023-12-19 12:34:40,338 INFO L899 garLoopResultBuilder]: For program point L44(line 44) no Hoare annotation was computed. [2023-12-19 12:34:40,338 INFO L902 garLoopResultBuilder]: At program point L40(line 40) the Hoare annotation is: true [2023-12-19 12:34:40,338 INFO L902 garLoopResultBuilder]: At program point L40-1(line 40) the Hoare annotation is: true [2023-12-19 12:34:40,338 INFO L902 garLoopResultBuilder]: At program point L61-2(lines 61 67) the Hoare annotation is: true [2023-12-19 12:34:40,338 INFO L899 garLoopResultBuilder]: For program point L61-3(lines 61 67) no Hoare annotation was computed. [2023-12-19 12:34:40,339 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2023-12-19 12:34:40,341 INFO L902 garLoopResultBuilder]: At program point L49(line 49) the Hoare annotation is: true [2023-12-19 12:34:40,342 INFO L902 garLoopResultBuilder]: At program point L49-1(line 49) the Hoare annotation is: true [2023-12-19 12:34:40,342 INFO L899 garLoopResultBuilder]: For program point L41(line 41) no Hoare annotation was computed. [2023-12-19 12:34:40,343 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-12-19 12:34:40,343 INFO L899 garLoopResultBuilder]: For program point L29(lines 29 37) no Hoare annotation was computed. [2023-12-19 12:34:40,343 INFO L899 garLoopResultBuilder]: For program point L50(lines 38 51) no Hoare annotation was computed. [2023-12-19 12:34:40,343 INFO L902 garLoopResultBuilder]: At program point L46(line 46) the Hoare annotation is: true [2023-12-19 12:34:40,343 INFO L902 garLoopResultBuilder]: At program point L46-1(line 46) the Hoare annotation is: true [2023-12-19 12:34:40,343 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-12-19 12:34:40,343 INFO L899 garLoopResultBuilder]: For program point L30(lines 30 36) no Hoare annotation was computed. [2023-12-19 12:34:40,343 INFO L899 garLoopResultBuilder]: For program point L47(line 47) no Hoare annotation was computed. [2023-12-19 12:34:40,343 INFO L902 garLoopResultBuilder]: At program point L43(line 43) the Hoare annotation is: true [2023-12-19 12:34:40,343 INFO L902 garLoopResultBuilder]: At program point L43-1(line 43) the Hoare annotation is: true [2023-12-19 12:34:40,343 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(line 20) the Hoare annotation is: true [2023-12-19 12:34:40,343 INFO L899 garLoopResultBuilder]: For program point L20(line 20) no Hoare annotation was computed. [2023-12-19 12:34:40,343 INFO L899 garLoopResultBuilder]: For program point L20-2(line 20) no Hoare annotation was computed. [2023-12-19 12:34:40,343 INFO L899 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(line 20) no Hoare annotation was computed. [2023-12-19 12:34:40,346 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2023-12-19 12:34:40,347 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-19 12:34:40,354 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.12 12:34:40 BoogieIcfgContainer [2023-12-19 12:34:40,354 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-19 12:34:40,355 INFO L158 Benchmark]: Toolchain (without parser) took 2339.83ms. Allocated memory is still 328.2MB. Free memory was 285.6MB in the beginning and 144.5MB in the end (delta: 141.0MB). Peak memory consumption was 142.6MB. Max. memory is 8.0GB. [2023-12-19 12:34:40,355 INFO L158 Benchmark]: CDTParser took 0.38ms. Allocated memory is still 178.3MB. Free memory is still 126.9MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-19 12:34:40,355 INFO L158 Benchmark]: CACSL2BoogieTranslator took 174.38ms. Allocated memory is still 328.2MB. Free memory was 285.6MB in the beginning and 274.6MB in the end (delta: 11.0MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2023-12-19 12:34:40,357 INFO L158 Benchmark]: Boogie Procedure Inliner took 20.30ms. Allocated memory is still 328.2MB. Free memory was 274.6MB in the beginning and 273.0MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-12-19 12:34:40,357 INFO L158 Benchmark]: Boogie Preprocessor took 28.77ms. Allocated memory is still 328.2MB. Free memory was 272.5MB in the beginning and 270.9MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-12-19 12:34:40,357 INFO L158 Benchmark]: RCFGBuilder took 264.43ms. Allocated memory is still 328.2MB. Free memory was 270.9MB in the beginning and 257.8MB in the end (delta: 13.1MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. [2023-12-19 12:34:40,358 INFO L158 Benchmark]: TraceAbstraction took 1846.93ms. Allocated memory is still 328.2MB. Free memory was 257.3MB in the beginning and 144.5MB in the end (delta: 112.7MB). Peak memory consumption was 114.3MB. Max. memory is 8.0GB. [2023-12-19 12:34:40,359 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.38ms. Allocated memory is still 178.3MB. Free memory is still 126.9MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 174.38ms. Allocated memory is still 328.2MB. Free memory was 285.6MB in the beginning and 274.6MB in the end (delta: 11.0MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 20.30ms. Allocated memory is still 328.2MB. Free memory was 274.6MB in the beginning and 273.0MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 28.77ms. Allocated memory is still 328.2MB. Free memory was 272.5MB in the beginning and 270.9MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 264.43ms. Allocated memory is still 328.2MB. Free memory was 270.9MB in the beginning and 257.8MB in the end (delta: 13.1MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. * TraceAbstraction took 1846.93ms. Allocated memory is still 328.2MB. Free memory was 257.3MB in the beginning and 144.5MB in the end (delta: 112.7MB). Peak memory consumption was 114.3MB. 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 - PositiveResult [Line: 19]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 27 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.8s, OverallIterations: 4, TraceHistogramMax: 8, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 20 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 20 mSDsluCounter, 303 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 182 mSDsCounter, 5 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 112 IncrementalHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 5 mSolverCounterUnsat, 121 mSDtfsCounter, 112 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 94 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=27occurred in iteration=0, InterpolantAutomatonStates: 21, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 8 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 10 LocationsWithAnnotation, 25 PreInvPairs, 36 NumberOfFragments, 10 HoareAnnotationTreeSize, 25 FormulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 10 FormulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 202 NumberOfCodeBlocks, 202 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 198 ConstructedInterpolants, 0 QuantifiedInterpolants, 652 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 448/448 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 61]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2023-12-19 12:34:40,381 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request...