./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/egcd3-ll_valuebound1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a046e57d Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/egcd3-ll_valuebound1.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 40c004ecbeb3948e318f4c5fc8011bd289b059bb9dbb2959c45853a9680cf20f --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-mul-div-a046e57-m [2024-10-12 18:51:39,911 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-12 18:51:39,985 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-12 18:51:39,990 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-12 18:51:39,993 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-12 18:51:40,018 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-12 18:51:40,020 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-12 18:51:40,020 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-12 18:51:40,021 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-12 18:51:40,022 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-12 18:51:40,023 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-12 18:51:40,023 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-12 18:51:40,024 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-12 18:51:40,024 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-12 18:51:40,025 INFO L153 SettingsManager]: * Use SBE=true [2024-10-12 18:51:40,027 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-12 18:51:40,027 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-12 18:51:40,028 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-12 18:51:40,028 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-12 18:51:40,028 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-12 18:51:40,028 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-12 18:51:40,032 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-12 18:51:40,033 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-12 18:51:40,033 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-12 18:51:40,033 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-12 18:51:40,033 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-12 18:51:40,034 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-12 18:51:40,034 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-12 18:51:40,034 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-12 18:51:40,034 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-12 18:51:40,035 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-12 18:51:40,035 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-12 18:51:40,035 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-12 18:51:40,035 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-12 18:51:40,035 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-12 18:51:40,036 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-12 18:51:40,036 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-12 18:51:40,037 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-12 18:51:40,037 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-12 18:51:40,038 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-12 18:51:40,038 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-12 18:51:40,038 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-12 18:51:40,039 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 40c004ecbeb3948e318f4c5fc8011bd289b059bb9dbb2959c45853a9680cf20f [2024-10-12 18:51:40,310 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-12 18:51:40,342 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-12 18:51:40,345 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-12 18:51:40,347 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-12 18:51:40,348 INFO L274 PluginConnector]: CDTParser initialized [2024-10-12 18:51:40,349 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/egcd3-ll_valuebound1.c [2024-10-12 18:51:41,971 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-12 18:51:42,175 INFO L384 CDTParser]: Found 1 translation units. [2024-10-12 18:51:42,176 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/egcd3-ll_valuebound1.c [2024-10-12 18:51:42,184 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3c0838819/4814e57ef79f45818713957c8dba8373/FLAG1f2425dba [2024-10-12 18:51:42,198 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3c0838819/4814e57ef79f45818713957c8dba8373 [2024-10-12 18:51:42,200 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-12 18:51:42,202 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-12 18:51:42,203 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-12 18:51:42,203 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-12 18:51:42,210 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-12 18:51:42,211 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 06:51:42" (1/1) ... [2024-10-12 18:51:42,214 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@70ede98e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:51:42, skipping insertion in model container [2024-10-12 18:51:42,215 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 06:51:42" (1/1) ... [2024-10-12 18:51:42,241 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-12 18:51:42,403 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/egcd3-ll_valuebound1.c[490,503] [2024-10-12 18:51:42,426 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-12 18:51:42,436 INFO L200 MainTranslator]: Completed pre-run [2024-10-12 18:51:42,446 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/egcd3-ll_valuebound1.c[490,503] [2024-10-12 18:51:42,455 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-12 18:51:42,472 INFO L204 MainTranslator]: Completed translation [2024-10-12 18:51:42,474 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:51:42 WrapperNode [2024-10-12 18:51:42,474 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-12 18:51:42,475 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-12 18:51:42,475 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-12 18:51:42,475 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-12 18:51:42,487 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:51:42" (1/1) ... [2024-10-12 18:51:42,495 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:51:42" (1/1) ... [2024-10-12 18:51:42,520 INFO L138 Inliner]: procedures = 14, calls = 16, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 83 [2024-10-12 18:51:42,521 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-12 18:51:42,521 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-12 18:51:42,522 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-12 18:51:42,522 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-12 18:51:42,535 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:51:42" (1/1) ... [2024-10-12 18:51:42,536 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:51:42" (1/1) ... [2024-10-12 18:51:42,542 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:51:42" (1/1) ... [2024-10-12 18:51:42,563 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]. [2024-10-12 18:51:42,569 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:51:42" (1/1) ... [2024-10-12 18:51:42,570 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:51:42" (1/1) ... [2024-10-12 18:51:42,574 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:51:42" (1/1) ... [2024-10-12 18:51:42,582 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:51:42" (1/1) ... [2024-10-12 18:51:42,586 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:51:42" (1/1) ... [2024-10-12 18:51:42,587 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:51:42" (1/1) ... [2024-10-12 18:51:42,589 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-12 18:51:42,590 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-12 18:51:42,590 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-12 18:51:42,591 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-12 18:51:42,591 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:51:42" (1/1) ... [2024-10-12 18:51:42,598 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-12 18:51:42,613 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 18:51:42,633 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) [2024-10-12 18:51:42,637 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 [2024-10-12 18:51:42,726 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-12 18:51:42,727 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-10-12 18:51:42,727 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-10-12 18:51:42,727 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-12 18:51:42,727 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-12 18:51:42,728 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-12 18:51:42,728 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-10-12 18:51:42,758 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-10-12 18:51:42,839 INFO L238 CfgBuilder]: Building ICFG [2024-10-12 18:51:42,842 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-12 18:51:43,051 INFO L? ?]: Removed 6 outVars from TransFormulas that were not future-live. [2024-10-12 18:51:43,051 INFO L287 CfgBuilder]: Performing block encoding [2024-10-12 18:51:43,080 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-12 18:51:43,081 INFO L314 CfgBuilder]: Removed 3 assume(true) statements. [2024-10-12 18:51:43,081 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 06:51:43 BoogieIcfgContainer [2024-10-12 18:51:43,081 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-12 18:51:43,083 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-12 18:51:43,084 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-12 18:51:43,087 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-12 18:51:43,088 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 06:51:42" (1/3) ... [2024-10-12 18:51:43,089 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2be22f58 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 06:51:43, skipping insertion in model container [2024-10-12 18:51:43,089 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:51:42" (2/3) ... [2024-10-12 18:51:43,089 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2be22f58 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 06:51:43, skipping insertion in model container [2024-10-12 18:51:43,089 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 06:51:43" (3/3) ... [2024-10-12 18:51:43,091 INFO L112 eAbstractionObserver]: Analyzing ICFG egcd3-ll_valuebound1.c [2024-10-12 18:51:43,114 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-12 18:51:43,114 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-12 18:51:43,195 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-12 18:51:43,202 INFO L333 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, 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;@3eb5e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-12 18:51:43,203 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-12 18:51:43,209 INFO L276 IsEmpty]: Start isEmpty. Operand has 32 states, 19 states have (on average 1.631578947368421) internal successors, (31), 20 states have internal predecessors, (31), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-10-12 18:51:43,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-10-12 18:51:43,220 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 18:51:43,221 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 18:51:43,222 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 18:51:43,230 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 18:51:43,230 INFO L85 PathProgramCache]: Analyzing trace with hash 67099435, now seen corresponding path program 1 times [2024-10-12 18:51:43,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 18:51:43,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [218673464] [2024-10-12 18:51:43,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:51:43,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 18:51:43,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:51:43,443 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 18:51:43,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:51:43,454 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-12 18:51:43,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:51:43,463 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-12 18:51:43,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:51:43,471 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-10-12 18:51:43,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:51:43,479 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-10-12 18:51:43,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 18:51:43,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [218673464] [2024-10-12 18:51:43,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [218673464] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 18:51:43,482 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 18:51:43,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-12 18:51:43,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965287217] [2024-10-12 18:51:43,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 18:51:43,488 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-12 18:51:43,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 18:51:43,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-12 18:51:43,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-12 18:51:43,516 INFO L87 Difference]: Start difference. First operand has 32 states, 19 states have (on average 1.631578947368421) internal successors, (31), 20 states have internal predecessors, (31), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2024-10-12 18:51:43,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 18:51:43,549 INFO L93 Difference]: Finished difference Result 62 states and 104 transitions. [2024-10-12 18:51:43,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-12 18:51:43,555 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) Word has length 28 [2024-10-12 18:51:43,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 18:51:43,563 INFO L225 Difference]: With dead ends: 62 [2024-10-12 18:51:43,563 INFO L226 Difference]: Without dead ends: 30 [2024-10-12 18:51:43,566 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-12 18:51:43,572 INFO L432 NwaCegarLoop]: 39 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-12 18:51:43,573 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 39 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 18:51:43,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2024-10-12 18:51:43,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2024-10-12 18:51:43,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 18 states have (on average 1.2222222222222223) internal successors, (22), 19 states have internal predecessors, (22), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-10-12 18:51:43,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 39 transitions. [2024-10-12 18:51:43,615 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 39 transitions. Word has length 28 [2024-10-12 18:51:43,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 18:51:43,616 INFO L471 AbstractCegarLoop]: Abstraction has 30 states and 39 transitions. [2024-10-12 18:51:43,617 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2024-10-12 18:51:43,617 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 39 transitions. [2024-10-12 18:51:43,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-10-12 18:51:43,619 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 18:51:43,619 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 18:51:43,619 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-12 18:51:43,620 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 18:51:43,621 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 18:51:43,621 INFO L85 PathProgramCache]: Analyzing trace with hash -1772608446, now seen corresponding path program 1 times [2024-10-12 18:51:43,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 18:51:43,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248066975] [2024-10-12 18:51:43,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:51:43,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 18:51:43,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:51:43,877 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 18:51:43,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:51:43,884 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-12 18:51:43,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:51:43,896 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-12 18:51:43,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:51:43,901 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-10-12 18:51:43,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:51:43,938 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-10-12 18:51:43,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 18:51:43,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1248066975] [2024-10-12 18:51:43,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1248066975] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 18:51:43,940 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 18:51:43,940 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-12 18:51:43,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605017287] [2024-10-12 18:51:43,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 18:51:43,942 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-12 18:51:43,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 18:51:43,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-12 18:51:43,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-12 18:51:43,944 INFO L87 Difference]: Start difference. First operand 30 states and 39 transitions. Second operand has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2024-10-12 18:51:44,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 18:51:44,088 INFO L93 Difference]: Finished difference Result 49 states and 64 transitions. [2024-10-12 18:51:44,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-12 18:51:44,090 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 29 [2024-10-12 18:51:44,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 18:51:44,091 INFO L225 Difference]: With dead ends: 49 [2024-10-12 18:51:44,092 INFO L226 Difference]: Without dead ends: 42 [2024-10-12 18:51:44,093 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-10-12 18:51:44,095 INFO L432 NwaCegarLoop]: 28 mSDtfsCounter, 30 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 18:51:44,096 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 116 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 18:51:44,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2024-10-12 18:51:44,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 32. [2024-10-12 18:51:44,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 20 states have (on average 1.2) internal successors, (24), 21 states have internal predecessors, (24), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-10-12 18:51:44,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 41 transitions. [2024-10-12 18:51:44,112 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 41 transitions. Word has length 29 [2024-10-12 18:51:44,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 18:51:44,113 INFO L471 AbstractCegarLoop]: Abstraction has 32 states and 41 transitions. [2024-10-12 18:51:44,113 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2024-10-12 18:51:44,113 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 41 transitions. [2024-10-12 18:51:44,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-10-12 18:51:44,114 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 18:51:44,115 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 18:51:44,115 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-12 18:51:44,115 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 18:51:44,115 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 18:51:44,115 INFO L85 PathProgramCache]: Analyzing trace with hash -1072684582, now seen corresponding path program 1 times [2024-10-12 18:51:44,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 18:51:44,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487506984] [2024-10-12 18:51:44,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:51:44,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 18:51:44,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-12 18:51:44,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [605510954] [2024-10-12 18:51:44,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:51:44,158 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:51:44,158 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 18:51:44,160 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) [2024-10-12 18:51:44,163 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-12 18:51:44,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:51:44,234 INFO L255 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-10-12 18:51:44,241 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 18:51:44,417 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-10-12 18:51:44,418 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 18:51:44,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 18:51:44,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1487506984] [2024-10-12 18:51:44,419 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-12 18:51:44,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [605510954] [2024-10-12 18:51:44,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [605510954] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 18:51:44,420 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 18:51:44,420 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-12 18:51:44,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58075752] [2024-10-12 18:51:44,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 18:51:44,422 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-12 18:51:44,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 18:51:44,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-12 18:51:44,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-12 18:51:44,425 INFO L87 Difference]: Start difference. First operand 32 states and 41 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-10-12 18:51:44,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 18:51:44,499 INFO L93 Difference]: Finished difference Result 48 states and 62 transitions. [2024-10-12 18:51:44,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-12 18:51:44,503 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 32 [2024-10-12 18:51:44,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 18:51:44,504 INFO L225 Difference]: With dead ends: 48 [2024-10-12 18:51:44,505 INFO L226 Difference]: Without dead ends: 46 [2024-10-12 18:51:44,505 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-12 18:51:44,508 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 7 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 127 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-12 18:51:44,509 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 127 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 18:51:44,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2024-10-12 18:51:44,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 45. [2024-10-12 18:51:44,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 28 states have (on average 1.2142857142857142) internal successors, (34), 29 states have internal predecessors, (34), 13 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-10-12 18:51:44,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 59 transitions. [2024-10-12 18:51:44,530 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 59 transitions. Word has length 32 [2024-10-12 18:51:44,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 18:51:44,531 INFO L471 AbstractCegarLoop]: Abstraction has 45 states and 59 transitions. [2024-10-12 18:51:44,531 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-10-12 18:51:44,531 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 59 transitions. [2024-10-12 18:51:44,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-10-12 18:51:44,532 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 18:51:44,532 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 18:51:44,554 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-12 18:51:44,739 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:51:44,740 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 18:51:44,740 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 18:51:44,741 INFO L85 PathProgramCache]: Analyzing trace with hash 581538888, now seen corresponding path program 1 times [2024-10-12 18:51:44,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 18:51:44,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5719062] [2024-10-12 18:51:44,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:51:44,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 18:51:44,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:51:44,924 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 18:51:44,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:51:44,931 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-12 18:51:44,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:51:44,934 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-12 18:51:44,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:51:44,981 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-10-12 18:51:44,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:51:44,988 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-10-12 18:51:44,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 18:51:44,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [5719062] [2024-10-12 18:51:44,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [5719062] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 18:51:44,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [866091291] [2024-10-12 18:51:44,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:51:44,993 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:51:44,993 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 18:51:44,995 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 18:51:44,997 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-12 18:51:45,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:51:45,052 INFO L255 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-10-12 18:51:45,054 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 18:51:45,100 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-10-12 18:51:45,100 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 18:51:45,212 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-10-12 18:51:45,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [866091291] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 18:51:45,214 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 18:51:45,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 9 [2024-10-12 18:51:45,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593755972] [2024-10-12 18:51:45,215 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 18:51:45,215 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-12 18:51:45,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 18:51:45,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-12 18:51:45,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-10-12 18:51:45,219 INFO L87 Difference]: Start difference. First operand 45 states and 59 transitions. Second operand has 9 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 8 states have internal predecessors, (21), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-10-12 18:51:45,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 18:51:45,433 INFO L93 Difference]: Finished difference Result 98 states and 138 transitions. [2024-10-12 18:51:45,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-12 18:51:45,433 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 8 states have internal predecessors, (21), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 34 [2024-10-12 18:51:45,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 18:51:45,435 INFO L225 Difference]: With dead ends: 98 [2024-10-12 18:51:45,435 INFO L226 Difference]: Without dead ends: 91 [2024-10-12 18:51:45,435 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 70 SyntacticMatches, 4 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2024-10-12 18:51:45,436 INFO L432 NwaCegarLoop]: 38 mSDtfsCounter, 60 mSDsluCounter, 185 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 223 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 18:51:45,436 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 223 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 18:51:45,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2024-10-12 18:51:45,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 66. [2024-10-12 18:51:45,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 45 states have (on average 1.2666666666666666) internal successors, (57), 46 states have internal predecessors, (57), 17 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-10-12 18:51:45,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 90 transitions. [2024-10-12 18:51:45,460 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 90 transitions. Word has length 34 [2024-10-12 18:51:45,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 18:51:45,464 INFO L471 AbstractCegarLoop]: Abstraction has 66 states and 90 transitions. [2024-10-12 18:51:45,464 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 8 states have internal predecessors, (21), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-10-12 18:51:45,465 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 90 transitions. [2024-10-12 18:51:45,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-10-12 18:51:45,465 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 18:51:45,466 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 18:51:45,486 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-10-12 18:51:45,666 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2024-10-12 18:51:45,667 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 18:51:45,667 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 18:51:45,668 INFO L85 PathProgramCache]: Analyzing trace with hash -1534715754, now seen corresponding path program 1 times [2024-10-12 18:51:45,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 18:51:45,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [124685582] [2024-10-12 18:51:45,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:51:45,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 18:51:45,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-12 18:51:45,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [673300832] [2024-10-12 18:51:45,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:51:45,682 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:51:45,682 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 18:51:45,684 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 18:51:45,685 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-12 18:51:45,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:51:45,731 INFO L255 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-10-12 18:51:45,733 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 18:51:45,831 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-10-12 18:51:45,833 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 18:51:45,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 18:51:45,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [124685582] [2024-10-12 18:51:45,833 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-12 18:51:45,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [673300832] [2024-10-12 18:51:45,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [673300832] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 18:51:45,834 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 18:51:45,834 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-12 18:51:45,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160609449] [2024-10-12 18:51:45,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 18:51:45,834 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-12 18:51:45,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 18:51:45,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-12 18:51:45,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-12 18:51:45,837 INFO L87 Difference]: Start difference. First operand 66 states and 90 transitions. Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-12 18:51:45,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 18:51:45,905 INFO L93 Difference]: Finished difference Result 74 states and 97 transitions. [2024-10-12 18:51:45,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-12 18:51:45,906 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 37 [2024-10-12 18:51:45,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 18:51:45,908 INFO L225 Difference]: With dead ends: 74 [2024-10-12 18:51:45,909 INFO L226 Difference]: Without dead ends: 72 [2024-10-12 18:51:45,910 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-12 18:51:45,910 INFO L432 NwaCegarLoop]: 34 mSDtfsCounter, 7 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-12 18:51:45,911 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 124 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 18:51:45,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2024-10-12 18:51:45,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 70. [2024-10-12 18:51:45,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 48 states have (on average 1.25) internal successors, (60), 49 states have internal predecessors, (60), 17 states have call successors, (17), 4 states have call predecessors, (17), 4 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-10-12 18:51:45,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 93 transitions. [2024-10-12 18:51:45,936 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 93 transitions. Word has length 37 [2024-10-12 18:51:45,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 18:51:45,936 INFO L471 AbstractCegarLoop]: Abstraction has 70 states and 93 transitions. [2024-10-12 18:51:45,937 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-12 18:51:45,938 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 93 transitions. [2024-10-12 18:51:45,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-10-12 18:51:45,939 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 18:51:45,940 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 18:51:45,959 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-12 18:51:46,140 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:51:46,141 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 18:51:46,141 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 18:51:46,141 INFO L85 PathProgramCache]: Analyzing trace with hash -1190433772, now seen corresponding path program 1 times [2024-10-12 18:51:46,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 18:51:46,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786634024] [2024-10-12 18:51:46,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:51:46,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 18:51:46,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:51:46,268 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 18:51:46,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:51:46,272 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-12 18:51:46,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:51:46,302 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-12 18:51:46,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:51:46,319 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-10-12 18:51:46,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:51:46,325 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-12 18:51:46,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 18:51:46,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1786634024] [2024-10-12 18:51:46,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1786634024] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 18:51:46,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1777006287] [2024-10-12 18:51:46,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:51:46,328 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:51:46,328 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 18:51:46,330 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 18:51:46,332 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-12 18:51:46,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:51:46,386 INFO L255 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-10-12 18:51:46,387 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 18:51:46,503 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-12 18:51:46,504 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 18:51:46,608 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-12 18:51:46,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1777006287] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 18:51:46,608 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 18:51:46,608 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 13 [2024-10-12 18:51:46,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402892339] [2024-10-12 18:51:46,609 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 18:51:46,609 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-12 18:51:46,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 18:51:46,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-12 18:51:46,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-10-12 18:51:46,610 INFO L87 Difference]: Start difference. First operand 70 states and 93 transitions. Second operand has 13 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 9 states have internal predecessors, (29), 6 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7) [2024-10-12 18:51:46,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 18:51:46,846 INFO L93 Difference]: Finished difference Result 97 states and 131 transitions. [2024-10-12 18:51:46,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-12 18:51:46,847 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 9 states have internal predecessors, (29), 6 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7) Word has length 37 [2024-10-12 18:51:46,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 18:51:46,848 INFO L225 Difference]: With dead ends: 97 [2024-10-12 18:51:46,848 INFO L226 Difference]: Without dead ends: 59 [2024-10-12 18:51:46,848 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 74 SyntacticMatches, 3 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=70, Invalid=202, Unknown=0, NotChecked=0, Total=272 [2024-10-12 18:51:46,850 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 47 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 207 SdHoareTripleChecker+Invalid, 170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-12 18:51:46,850 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 207 Invalid, 170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-12 18:51:46,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2024-10-12 18:51:46,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 51. [2024-10-12 18:51:46,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 33 states have (on average 1.1818181818181819) internal successors, (39), 34 states have internal predecessors, (39), 13 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-10-12 18:51:46,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 64 transitions. [2024-10-12 18:51:46,870 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 64 transitions. Word has length 37 [2024-10-12 18:51:46,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 18:51:46,871 INFO L471 AbstractCegarLoop]: Abstraction has 51 states and 64 transitions. [2024-10-12 18:51:46,871 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 9 states have internal predecessors, (29), 6 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7) [2024-10-12 18:51:46,871 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 64 transitions. [2024-10-12 18:51:46,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-10-12 18:51:46,872 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 18:51:46,872 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 18:51:46,891 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-12 18:51:47,072 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:51:47,073 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 18:51:47,073 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 18:51:47,073 INFO L85 PathProgramCache]: Analyzing trace with hash 1246105370, now seen corresponding path program 1 times [2024-10-12 18:51:47,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 18:51:47,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [408901370] [2024-10-12 18:51:47,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:51:47,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 18:51:47,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-12 18:51:47,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1080161625] [2024-10-12 18:51:47,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:51:47,091 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:51:47,091 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 18:51:47,100 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 18:51:47,105 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-12 18:51:47,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:51:47,154 INFO L255 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-12 18:51:47,156 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 18:51:47,229 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-10-12 18:51:47,232 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 18:51:47,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 18:51:47,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [408901370] [2024-10-12 18:51:47,233 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-12 18:51:47,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1080161625] [2024-10-12 18:51:47,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1080161625] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 18:51:47,236 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 18:51:47,236 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-12 18:51:47,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991332882] [2024-10-12 18:51:47,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 18:51:47,237 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-12 18:51:47,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 18:51:47,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-12 18:51:47,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-12 18:51:47,239 INFO L87 Difference]: Start difference. First operand 51 states and 64 transitions. Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-10-12 18:51:47,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 18:51:47,310 INFO L93 Difference]: Finished difference Result 74 states and 97 transitions. [2024-10-12 18:51:47,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-12 18:51:47,311 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 42 [2024-10-12 18:51:47,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 18:51:47,312 INFO L225 Difference]: With dead ends: 74 [2024-10-12 18:51:47,313 INFO L226 Difference]: Without dead ends: 72 [2024-10-12 18:51:47,313 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-12 18:51:47,314 INFO L432 NwaCegarLoop]: 34 mSDtfsCounter, 6 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-12 18:51:47,314 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 123 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 18:51:47,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2024-10-12 18:51:47,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 69. [2024-10-12 18:51:47,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 42 states have (on average 1.2142857142857142) internal successors, (51), 43 states have internal predecessors, (51), 21 states have call successors, (21), 5 states have call predecessors, (21), 5 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2024-10-12 18:51:47,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 92 transitions. [2024-10-12 18:51:47,342 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 92 transitions. Word has length 42 [2024-10-12 18:51:47,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 18:51:47,342 INFO L471 AbstractCegarLoop]: Abstraction has 69 states and 92 transitions. [2024-10-12 18:51:47,343 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-10-12 18:51:47,343 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 92 transitions. [2024-10-12 18:51:47,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-10-12 18:51:47,343 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 18:51:47,343 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 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] [2024-10-12 18:51:47,364 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-10-12 18:51:47,547 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:51:47,548 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 18:51:47,548 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 18:51:47,548 INFO L85 PathProgramCache]: Analyzing trace with hash 225223382, now seen corresponding path program 1 times [2024-10-12 18:51:47,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 18:51:47,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041479503] [2024-10-12 18:51:47,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:51:47,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 18:51:47,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-12 18:51:47,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [606843558] [2024-10-12 18:51:47,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:51:47,566 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:51:47,567 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 18:51:47,569 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 18:51:47,571 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-12 18:51:47,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:51:47,620 INFO L255 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-12 18:51:47,622 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 18:51:47,676 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-10-12 18:51:47,676 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 18:51:47,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 18:51:47,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041479503] [2024-10-12 18:51:47,677 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-12 18:51:47,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [606843558] [2024-10-12 18:51:47,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [606843558] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 18:51:47,677 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 18:51:47,678 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-12 18:51:47,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051980778] [2024-10-12 18:51:47,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 18:51:47,678 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-12 18:51:47,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 18:51:47,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-12 18:51:47,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-12 18:51:47,679 INFO L87 Difference]: Start difference. First operand 69 states and 92 transitions. Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-10-12 18:51:47,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 18:51:47,745 INFO L93 Difference]: Finished difference Result 101 states and 143 transitions. [2024-10-12 18:51:47,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-12 18:51:47,745 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 47 [2024-10-12 18:51:47,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 18:51:47,747 INFO L225 Difference]: With dead ends: 101 [2024-10-12 18:51:47,747 INFO L226 Difference]: Without dead ends: 99 [2024-10-12 18:51:47,747 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-12 18:51:47,748 INFO L432 NwaCegarLoop]: 35 mSDtfsCounter, 4 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 125 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-12 18:51:47,748 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 125 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 18:51:47,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2024-10-12 18:51:47,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 93. [2024-10-12 18:51:47,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 49 states have (on average 1.183673469387755) internal successors, (58), 54 states have internal predecessors, (58), 37 states have call successors, (37), 6 states have call predecessors, (37), 6 states have return successors, (36), 32 states have call predecessors, (36), 36 states have call successors, (36) [2024-10-12 18:51:47,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 131 transitions. [2024-10-12 18:51:47,780 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 131 transitions. Word has length 47 [2024-10-12 18:51:47,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 18:51:47,781 INFO L471 AbstractCegarLoop]: Abstraction has 93 states and 131 transitions. [2024-10-12 18:51:47,782 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-10-12 18:51:47,782 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 131 transitions. [2024-10-12 18:51:47,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-10-12 18:51:47,783 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 18:51:47,783 INFO L215 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 2, 2, 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] [2024-10-12 18:51:47,800 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-10-12 18:51:47,987 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:51:47,988 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 18:51:47,988 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 18:51:47,988 INFO L85 PathProgramCache]: Analyzing trace with hash 371933676, now seen corresponding path program 1 times [2024-10-12 18:51:47,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 18:51:47,988 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1334649114] [2024-10-12 18:51:47,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:51:47,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 18:51:48,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-12 18:51:48,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [192956377] [2024-10-12 18:51:48,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:51:48,006 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:51:48,006 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 18:51:48,011 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 18:51:48,012 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-12 18:51:48,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:51:48,067 INFO L255 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 51 conjuncts are in the unsatisfiable core [2024-10-12 18:51:48,070 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 18:51:48,941 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 14 proven. 10 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-10-12 18:51:48,941 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 18:51:50,684 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 11 proven. 10 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2024-10-12 18:51:50,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 18:51:50,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1334649114] [2024-10-12 18:51:50,685 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-12 18:51:50,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [192956377] [2024-10-12 18:51:50,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [192956377] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 18:51:50,686 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-12 18:51:50,686 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 27 [2024-10-12 18:51:50,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393252771] [2024-10-12 18:51:50,686 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-12 18:51:50,687 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-10-12 18:51:50,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 18:51:50,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-10-12 18:51:50,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=587, Unknown=0, NotChecked=0, Total=702 [2024-10-12 18:51:50,688 INFO L87 Difference]: Start difference. First operand 93 states and 131 transitions. Second operand has 27 states, 23 states have (on average 1.9130434782608696) internal successors, (44), 21 states have internal predecessors, (44), 9 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (15), 7 states have call predecessors, (15), 7 states have call successors, (15) [2024-10-12 18:51:54,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 18:51:54,992 INFO L93 Difference]: Finished difference Result 326 states and 505 transitions. [2024-10-12 18:51:54,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2024-10-12 18:51:54,993 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 23 states have (on average 1.9130434782608696) internal successors, (44), 21 states have internal predecessors, (44), 9 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (15), 7 states have call predecessors, (15), 7 states have call successors, (15) Word has length 59 [2024-10-12 18:51:54,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 18:51:54,998 INFO L225 Difference]: With dead ends: 326 [2024-10-12 18:51:54,999 INFO L226 Difference]: Without dead ends: 322 [2024-10-12 18:51:55,001 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 829 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=728, Invalid=2694, Unknown=0, NotChecked=0, Total=3422 [2024-10-12 18:51:55,002 INFO L432 NwaCegarLoop]: 38 mSDtfsCounter, 291 mSDsluCounter, 531 mSDsCounter, 0 mSdLazyCounter, 711 mSolverCounterSat, 214 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 295 SdHoareTripleChecker+Valid, 569 SdHoareTripleChecker+Invalid, 925 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 214 IncrementalHoareTripleChecker+Valid, 711 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-10-12 18:51:55,005 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [295 Valid, 569 Invalid, 925 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [214 Valid, 711 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-10-12 18:51:55,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2024-10-12 18:51:55,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 184. [2024-10-12 18:51:55,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 105 states have (on average 1.2380952380952381) internal successors, (130), 110 states have internal predecessors, (130), 69 states have call successors, (69), 9 states have call predecessors, (69), 9 states have return successors, (68), 64 states have call predecessors, (68), 68 states have call successors, (68) [2024-10-12 18:51:55,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 267 transitions. [2024-10-12 18:51:55,095 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 267 transitions. Word has length 59 [2024-10-12 18:51:55,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 18:51:55,096 INFO L471 AbstractCegarLoop]: Abstraction has 184 states and 267 transitions. [2024-10-12 18:51:55,096 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 23 states have (on average 1.9130434782608696) internal successors, (44), 21 states have internal predecessors, (44), 9 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (15), 7 states have call predecessors, (15), 7 states have call successors, (15) [2024-10-12 18:51:55,097 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 267 transitions. [2024-10-12 18:51:55,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-10-12 18:51:55,098 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 18:51:55,098 INFO L215 NwaCegarLoop]: trace histogram [7, 6, 6, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 18:51:55,113 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-10-12 18:51:55,302 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:51:55,303 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 18:51:55,303 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 18:51:55,303 INFO L85 PathProgramCache]: Analyzing trace with hash 1738660030, now seen corresponding path program 1 times [2024-10-12 18:51:55,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 18:51:55,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [406652318] [2024-10-12 18:51:55,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:51:55,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 18:51:55,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:51:55,380 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 18:51:55,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:51:55,383 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-12 18:51:55,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:51:55,385 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-12 18:51:55,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:51:55,388 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-10-12 18:51:55,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:51:55,390 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-10-12 18:51:55,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:51:55,394 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-10-12 18:51:55,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:51:55,398 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-10-12 18:51:55,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:51:55,402 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-10-12 18:51:55,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:51:55,405 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-10-12 18:51:55,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:51:55,408 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-10-12 18:51:55,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:51:55,410 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-10-12 18:51:55,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 18:51:55,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [406652318] [2024-10-12 18:51:55,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [406652318] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 18:51:55,411 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 18:51:55,411 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-12 18:51:55,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748098084] [2024-10-12 18:51:55,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 18:51:55,411 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-12 18:51:55,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 18:51:55,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-12 18:51:55,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-12 18:51:55,412 INFO L87 Difference]: Start difference. First operand 184 states and 267 transitions. Second operand has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 3 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2024-10-12 18:51:55,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 18:51:55,508 INFO L93 Difference]: Finished difference Result 305 states and 439 transitions. [2024-10-12 18:51:55,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-12 18:51:55,509 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 3 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 67 [2024-10-12 18:51:55,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 18:51:55,511 INFO L225 Difference]: With dead ends: 305 [2024-10-12 18:51:55,511 INFO L226 Difference]: Without dead ends: 181 [2024-10-12 18:51:55,513 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-12 18:51:55,513 INFO L432 NwaCegarLoop]: 34 mSDtfsCounter, 2 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-12 18:51:55,514 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 115 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 18:51:55,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2024-10-12 18:51:55,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 178. [2024-10-12 18:51:55,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 108 states have (on average 1.2222222222222223) internal successors, (132), 109 states have internal predecessors, (132), 61 states have call successors, (61), 8 states have call predecessors, (61), 8 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) [2024-10-12 18:51:55,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 253 transitions. [2024-10-12 18:51:55,560 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 253 transitions. Word has length 67 [2024-10-12 18:51:55,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 18:51:55,561 INFO L471 AbstractCegarLoop]: Abstraction has 178 states and 253 transitions. [2024-10-12 18:51:55,561 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 3 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2024-10-12 18:51:55,561 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 253 transitions. [2024-10-12 18:51:55,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-10-12 18:51:55,562 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 18:51:55,563 INFO L215 NwaCegarLoop]: trace histogram [6, 5, 5, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 18:51:55,563 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-12 18:51:55,563 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 18:51:55,563 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 18:51:55,564 INFO L85 PathProgramCache]: Analyzing trace with hash -681710528, now seen corresponding path program 1 times [2024-10-12 18:51:55,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 18:51:55,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299766282] [2024-10-12 18:51:55,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:51:55,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 18:51:55,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:51:55,743 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 18:51:55,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:51:55,746 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-12 18:51:55,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:51:55,778 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-12 18:51:55,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:51:55,782 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-10-12 18:51:55,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:51:55,785 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-10-12 18:51:55,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:51:55,789 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-10-12 18:51:55,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:51:55,793 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-10-12 18:51:55,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:51:55,798 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-10-12 18:51:55,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:51:55,803 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-10-12 18:51:55,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:51:55,806 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 22 proven. 8 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-10-12 18:51:55,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 18:51:55,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299766282] [2024-10-12 18:51:55,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [299766282] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 18:51:55,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2134614250] [2024-10-12 18:51:55,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:51:55,807 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:51:55,808 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 18:51:55,809 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 18:51:55,811 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-12 18:51:55,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:51:55,864 INFO L255 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-10-12 18:51:55,867 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 18:51:55,963 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 36 proven. 8 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2024-10-12 18:51:55,964 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 18:51:56,096 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 22 proven. 8 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-10-12 18:51:56,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2134614250] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 18:51:56,097 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 18:51:56,097 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 14 [2024-10-12 18:51:56,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354600545] [2024-10-12 18:51:56,098 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 18:51:56,098 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-12 18:51:56,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 18:51:56,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-12 18:51:56,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2024-10-12 18:51:56,099 INFO L87 Difference]: Start difference. First operand 178 states and 253 transitions. Second operand has 14 states, 14 states have (on average 2.857142857142857) internal successors, (40), 12 states have internal predecessors, (40), 6 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (17), 6 states have call predecessors, (17), 6 states have call successors, (17) [2024-10-12 18:51:56,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 18:51:56,330 INFO L93 Difference]: Finished difference Result 254 states and 357 transitions. [2024-10-12 18:51:56,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-12 18:51:56,331 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.857142857142857) internal successors, (40), 12 states have internal predecessors, (40), 6 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (17), 6 states have call predecessors, (17), 6 states have call successors, (17) Word has length 67 [2024-10-12 18:51:56,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 18:51:56,332 INFO L225 Difference]: With dead ends: 254 [2024-10-12 18:51:56,332 INFO L226 Difference]: Without dead ends: 139 [2024-10-12 18:51:56,333 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 146 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=72, Invalid=270, Unknown=0, NotChecked=0, Total=342 [2024-10-12 18:51:56,334 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 67 mSDsluCounter, 207 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 234 SdHoareTripleChecker+Invalid, 190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 18:51:56,334 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 234 Invalid, 190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 18:51:56,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2024-10-12 18:51:56,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 139. [2024-10-12 18:51:56,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 86 states have (on average 1.197674418604651) internal successors, (103), 87 states have internal predecessors, (103), 45 states have call successors, (45), 7 states have call predecessors, (45), 7 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2024-10-12 18:51:56,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 192 transitions. [2024-10-12 18:51:56,390 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 192 transitions. Word has length 67 [2024-10-12 18:51:56,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 18:51:56,391 INFO L471 AbstractCegarLoop]: Abstraction has 139 states and 192 transitions. [2024-10-12 18:51:56,391 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.857142857142857) internal successors, (40), 12 states have internal predecessors, (40), 6 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (17), 6 states have call predecessors, (17), 6 states have call successors, (17) [2024-10-12 18:51:56,391 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 192 transitions. [2024-10-12 18:51:56,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-10-12 18:51:56,392 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 18:51:56,392 INFO L215 NwaCegarLoop]: trace histogram [8, 7, 7, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 18:51:56,410 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-10-12 18:51:56,593 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-10-12 18:51:56,593 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 18:51:56,593 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 18:51:56,594 INFO L85 PathProgramCache]: Analyzing trace with hash -1835197705, now seen corresponding path program 1 times [2024-10-12 18:51:56,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 18:51:56,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094592890] [2024-10-12 18:51:56,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:51:56,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 18:51:56,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:51:56,731 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 18:51:56,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:51:56,755 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-12 18:51:56,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:51:56,758 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-12 18:51:56,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:51:56,761 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-10-12 18:51:56,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:51:56,777 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-10-12 18:51:56,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:51:56,781 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-10-12 18:51:56,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:51:56,784 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-10-12 18:51:56,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:51:56,788 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-10-12 18:51:56,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:51:56,792 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-10-12 18:51:56,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:51:56,794 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-10-12 18:51:56,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:51:56,796 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-10-12 18:51:56,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:51:56,799 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 25 proven. 6 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2024-10-12 18:51:56,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 18:51:56,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1094592890] [2024-10-12 18:51:56,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1094592890] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 18:51:56,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1158320056] [2024-10-12 18:51:56,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:51:56,800 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:51:56,800 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 18:51:56,802 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 18:51:56,803 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-10-12 18:51:56,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:51:56,854 INFO L255 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-10-12 18:51:56,856 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 18:51:56,992 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 67 proven. 6 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2024-10-12 18:51:56,992 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 18:51:57,149 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 25 proven. 6 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2024-10-12 18:51:57,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1158320056] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 18:51:57,149 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 18:51:57,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 17 [2024-10-12 18:51:57,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247063202] [2024-10-12 18:51:57,149 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 18:51:57,150 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-10-12 18:51:57,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 18:51:57,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-10-12 18:51:57,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=228, Unknown=0, NotChecked=0, Total=272 [2024-10-12 18:51:57,151 INFO L87 Difference]: Start difference. First operand 139 states and 192 transitions. Second operand has 17 states, 17 states have (on average 2.176470588235294) internal successors, (37), 14 states have internal predecessors, (37), 6 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (23), 8 states have call predecessors, (23), 6 states have call successors, (23) [2024-10-12 18:51:57,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 18:51:57,261 INFO L93 Difference]: Finished difference Result 155 states and 204 transitions. [2024-10-12 18:51:57,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-12 18:51:57,265 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.176470588235294) internal successors, (37), 14 states have internal predecessors, (37), 6 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (23), 8 states have call predecessors, (23), 6 states have call successors, (23) Word has length 69 [2024-10-12 18:51:57,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 18:51:57,266 INFO L225 Difference]: With dead ends: 155 [2024-10-12 18:51:57,266 INFO L226 Difference]: Without dead ends: 0 [2024-10-12 18:51:57,267 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 149 SyntacticMatches, 3 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=92, Invalid=328, Unknown=0, NotChecked=0, Total=420 [2024-10-12 18:51:57,267 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 18 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 168 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 18:51:57,267 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 168 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 18:51:57,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-10-12 18:51:57,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-10-12 18:51:57,268 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) [2024-10-12 18:51:57,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-10-12 18:51:57,269 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 69 [2024-10-12 18:51:57,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 18:51:57,269 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-10-12 18:51:57,269 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.176470588235294) internal successors, (37), 14 states have internal predecessors, (37), 6 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (23), 8 states have call predecessors, (23), 6 states have call successors, (23) [2024-10-12 18:51:57,270 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-10-12 18:51:57,270 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-10-12 18:51:57,272 INFO L782 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-10-12 18:51:57,291 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-10-12 18:51:57,474 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:51:57,477 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 18:51:57,478 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-10-12 18:51:57,934 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-10-12 18:51:57,957 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.10 06:51:57 BoogieIcfgContainer [2024-10-12 18:51:57,957 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-10-12 18:51:57,958 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-10-12 18:51:57,958 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-10-12 18:51:57,958 INFO L274 PluginConnector]: Witness Printer initialized [2024-10-12 18:51:57,959 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 06:51:43" (3/4) ... [2024-10-12 18:51:57,961 INFO L139 WitnessPrinter]: Generating witness for correct program [2024-10-12 18:51:57,964 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not [2024-10-12 18:51:57,964 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2024-10-12 18:51:57,967 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2024-10-12 18:51:57,968 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2024-10-12 18:51:57,968 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-10-12 18:51:57,968 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-10-12 18:51:58,068 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-10-12 18:51:58,069 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-10-12 18:51:58,069 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-10-12 18:51:58,070 INFO L158 Benchmark]: Toolchain (without parser) took 15867.99ms. Allocated memory was 155.2MB in the beginning and 230.7MB in the end (delta: 75.5MB). Free memory was 86.3MB in the beginning and 142.2MB in the end (delta: -55.9MB). Peak memory consumption was 22.6MB. Max. memory is 16.1GB. [2024-10-12 18:51:58,070 INFO L158 Benchmark]: CDTParser took 0.34ms. Allocated memory is still 117.4MB. Free memory was 79.1MB in the beginning and 79.0MB in the end (delta: 139.9kB). There was no memory consumed. Max. memory is 16.1GB. [2024-10-12 18:51:58,070 INFO L158 Benchmark]: CACSL2BoogieTranslator took 271.35ms. Allocated memory is still 155.2MB. Free memory was 86.2MB in the beginning and 73.4MB in the end (delta: 12.8MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2024-10-12 18:51:58,070 INFO L158 Benchmark]: Boogie Procedure Inliner took 45.74ms. Allocated memory is still 155.2MB. Free memory was 73.4MB in the beginning and 71.9MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2024-10-12 18:51:58,070 INFO L158 Benchmark]: Boogie Preprocessor took 68.06ms. Allocated memory is still 155.2MB. Free memory was 71.9MB in the beginning and 69.9MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-12 18:51:58,071 INFO L158 Benchmark]: RCFGBuilder took 491.09ms. Allocated memory is still 155.2MB. Free memory was 69.9MB in the beginning and 117.6MB in the end (delta: -47.6MB). Peak memory consumption was 7.7MB. Max. memory is 16.1GB. [2024-10-12 18:51:58,071 INFO L158 Benchmark]: TraceAbstraction took 14873.84ms. Allocated memory was 155.2MB in the beginning and 230.7MB in the end (delta: 75.5MB). Free memory was 116.8MB in the beginning and 147.5MB in the end (delta: -30.6MB). Peak memory consumption was 129.1MB. Max. memory is 16.1GB. [2024-10-12 18:51:58,071 INFO L158 Benchmark]: Witness Printer took 111.37ms. Allocated memory is still 230.7MB. Free memory was 147.5MB in the beginning and 142.2MB in the end (delta: 5.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2024-10-12 18:51:58,073 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34ms. Allocated memory is still 117.4MB. Free memory was 79.1MB in the beginning and 79.0MB in the end (delta: 139.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 271.35ms. Allocated memory is still 155.2MB. Free memory was 86.2MB in the beginning and 73.4MB in the end (delta: 12.8MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 45.74ms. Allocated memory is still 155.2MB. Free memory was 73.4MB in the beginning and 71.9MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 68.06ms. Allocated memory is still 155.2MB. Free memory was 71.9MB in the beginning and 69.9MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 491.09ms. Allocated memory is still 155.2MB. Free memory was 69.9MB in the beginning and 117.6MB in the end (delta: -47.6MB). Peak memory consumption was 7.7MB. Max. memory is 16.1GB. * TraceAbstraction took 14873.84ms. Allocated memory was 155.2MB in the beginning and 230.7MB in the end (delta: 75.5MB). Free memory was 116.8MB in the beginning and 147.5MB in the end (delta: -30.6MB). Peak memory consumption was 129.1MB. Max. memory is 16.1GB. * Witness Printer took 111.37ms. Allocated memory is still 230.7MB. Free memory was 147.5MB in the beginning and 142.2MB in the end (delta: 5.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * 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: 13]: 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 3 procedures, 32 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 14.3s, OverallIterations: 12, TraceHistogramMax: 8, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 5.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 565 SdHoareTripleChecker+Valid, 2.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 539 mSDsluCounter, 2170 SdHoareTripleChecker+Invalid, 2.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1784 mSDsCounter, 328 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1465 IncrementalHoareTripleChecker+Invalid, 1793 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 328 mSolverCounterUnsat, 386 mSDtfsCounter, 1465 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 873 GetRequests, 717 SyntacticMatches, 12 SemanticMatches, 144 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 926 ImplicationChecksByTransitivity, 4.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=184occurred in iteration=9, InterpolantAutomatonStates: 112, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 12 MinimizatonAttempts, 196 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 5.2s InterpolantComputationTime, 972 NumberOfCodeBlocks, 972 NumberOfCodeBlocksAsserted, 21 NumberOfCheckSat, 1000 ConstructedInterpolants, 0 QuantifiedInterpolants, 3249 SizeOfPredicates, 23 NumberOfNonLiveVariables, 1143 ConjunctsInSsa, 136 ConjunctsInUnsatCore, 21 InterpolantComputations, 7 PerfectInterpolantSequences, 1097/1192 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: 42]: Loop Invariant Derived loop invariant: (((((((((((c == 0) && (k == 1)) && (b == 1)) && (p == 1)) && (a == 1)) && (x == 1)) && (r == 0)) && (q == 0)) && (y == 1)) && (s == 1)) || ((((((((((b == 1) && (p == 1)) && (c == 1)) && (a == 1)) && (x == 1)) && (r == 0)) && (q == 0)) && (y == 1)) && (k == 0)) && (s == 1))) - InvariantResult [Line: 49]: Loop Invariant Derived loop invariant: (((((((((((((d == 1) && (p == 1)) && (c <= 1)) && (v == 1)) && (b == v)) && (x == 1)) && (r == 0)) && (q == 0)) && (y == 1)) && (k == 0)) && (b <= c)) && (a == x)) && (s == 1)) - InvariantResult [Line: 35]: Loop Invariant Derived loop invariant: ((((((((((p == 0) && (a <= 1)) && (b == 0)) && (q == 1)) && (y == 1)) && (1 <= x)) && (r == 1)) && (((long long) x + 1) <= ((__int128) 2 * a))) && (((__int128) s + 1) == 0)) || ((((((((b == 1) && (p == 1)) && (a == 1)) && (x == 1)) && (r == 0)) && (q == 0)) && (y == 1)) && (s == 1))) - ProcedureContractResult [Line: 7]: Procedure Contract for assume_abort_if_not Derived contract for procedure assume_abort_if_not. Ensures: (cond != 0) - ProcedureContractResult [Line: 10]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert. Requires: (1 <= cond) Ensures: (1 <= cond) RESULT: Ultimate proved your program to be correct! [2024-10-12 18:51:58,092 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... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE