./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/ps6-ll_unwindbound100.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4a390ef5 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/ps6-ll_unwindbound100.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 e40af029af23d5cbf5d8bd74acfdc7af42526c81be3e447d3e43ec16d52857d1 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4a390ef-m [2024-10-24 00:29:41,136 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-24 00:29:41,199 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-24 00:29:41,204 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-24 00:29:41,206 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-24 00:29:41,229 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-24 00:29:41,230 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-24 00:29:41,230 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-24 00:29:41,231 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-24 00:29:41,232 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-24 00:29:41,232 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-24 00:29:41,233 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-24 00:29:41,233 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-24 00:29:41,233 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-24 00:29:41,235 INFO L153 SettingsManager]: * Use SBE=true [2024-10-24 00:29:41,236 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-24 00:29:41,236 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-24 00:29:41,236 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-24 00:29:41,236 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-24 00:29:41,236 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-24 00:29:41,237 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-24 00:29:41,237 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-24 00:29:41,237 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-24 00:29:41,237 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-24 00:29:41,237 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-24 00:29:41,238 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-24 00:29:41,238 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-24 00:29:41,238 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-24 00:29:41,238 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-24 00:29:41,238 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-24 00:29:41,239 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-24 00:29:41,239 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-24 00:29:41,239 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 00:29:41,239 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-24 00:29:41,240 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-24 00:29:41,240 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-24 00:29:41,240 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-24 00:29:41,240 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-24 00:29:41,240 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-24 00:29:41,241 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-24 00:29:41,241 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-24 00:29:41,241 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-24 00:29:41,241 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e40af029af23d5cbf5d8bd74acfdc7af42526c81be3e447d3e43ec16d52857d1 [2024-10-24 00:29:41,440 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-24 00:29:41,460 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-24 00:29:41,463 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-24 00:29:41,463 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-24 00:29:41,464 INFO L274 PluginConnector]: CDTParser initialized [2024-10-24 00:29:41,465 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/ps6-ll_unwindbound100.c [2024-10-24 00:29:42,666 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-24 00:29:42,816 INFO L384 CDTParser]: Found 1 translation units. [2024-10-24 00:29:42,816 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/ps6-ll_unwindbound100.c [2024-10-24 00:29:42,822 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/438e1c917/26655f5147ca4464acc84c8ea371425e/FLAGe3fcee2aa [2024-10-24 00:29:43,237 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/438e1c917/26655f5147ca4464acc84c8ea371425e [2024-10-24 00:29:43,239 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-24 00:29:43,240 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-24 00:29:43,242 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-24 00:29:43,242 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-24 00:29:43,246 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-24 00:29:43,246 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 12:29:43" (1/1) ... [2024-10-24 00:29:43,247 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1aaf9c93 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:29:43, skipping insertion in model container [2024-10-24 00:29:43,247 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 12:29:43" (1/1) ... [2024-10-24 00:29:43,263 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-24 00:29:43,396 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/ps6-ll_unwindbound100.c[458,471] [2024-10-24 00:29:43,410 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 00:29:43,417 INFO L200 MainTranslator]: Completed pre-run [2024-10-24 00:29:43,425 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/ps6-ll_unwindbound100.c[458,471] [2024-10-24 00:29:43,429 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 00:29:43,442 INFO L204 MainTranslator]: Completed translation [2024-10-24 00:29:43,442 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:29:43 WrapperNode [2024-10-24 00:29:43,442 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-24 00:29:43,443 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-24 00:29:43,443 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-24 00:29:43,443 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-24 00:29:43,448 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:29:43" (1/1) ... [2024-10-24 00:29:43,453 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:29:43" (1/1) ... [2024-10-24 00:29:43,464 INFO L138 Inliner]: procedures = 14, calls = 11, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 43 [2024-10-24 00:29:43,465 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-24 00:29:43,465 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-24 00:29:43,465 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-24 00:29:43,465 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-24 00:29:43,473 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:29:43" (1/1) ... [2024-10-24 00:29:43,473 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:29:43" (1/1) ... [2024-10-24 00:29:43,474 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:29:43" (1/1) ... [2024-10-24 00:29:43,482 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]. [2024-10-24 00:29:43,482 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:29:43" (1/1) ... [2024-10-24 00:29:43,482 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:29:43" (1/1) ... [2024-10-24 00:29:43,484 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:29:43" (1/1) ... [2024-10-24 00:29:43,487 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:29:43" (1/1) ... [2024-10-24 00:29:43,488 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:29:43" (1/1) ... [2024-10-24 00:29:43,488 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:29:43" (1/1) ... [2024-10-24 00:29:43,489 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-24 00:29:43,490 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-24 00:29:43,490 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-24 00:29:43,490 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-24 00:29:43,502 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:29:43" (1/1) ... [2024-10-24 00:29:43,509 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 00:29:43,522 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 00:29:43,534 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) [2024-10-24 00:29:43,536 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 [2024-10-24 00:29:43,576 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-24 00:29:43,577 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-24 00:29:43,577 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-24 00:29:43,577 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-24 00:29:43,577 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-10-24 00:29:43,577 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-10-24 00:29:43,624 INFO L238 CfgBuilder]: Building ICFG [2024-10-24 00:29:43,626 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-24 00:29:43,717 INFO L? ?]: Removed 7 outVars from TransFormulas that were not future-live. [2024-10-24 00:29:43,717 INFO L287 CfgBuilder]: Performing block encoding [2024-10-24 00:29:43,733 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-24 00:29:43,733 INFO L314 CfgBuilder]: Removed 1 assume(true) statements. [2024-10-24 00:29:43,733 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 12:29:43 BoogieIcfgContainer [2024-10-24 00:29:43,733 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-24 00:29:43,735 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-24 00:29:43,735 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-24 00:29:43,738 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-24 00:29:43,738 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 12:29:43" (1/3) ... [2024-10-24 00:29:43,739 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@451521e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 12:29:43, skipping insertion in model container [2024-10-24 00:29:43,739 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:29:43" (2/3) ... [2024-10-24 00:29:43,740 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@451521e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 12:29:43, skipping insertion in model container [2024-10-24 00:29:43,740 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 12:29:43" (3/3) ... [2024-10-24 00:29:43,741 INFO L112 eAbstractionObserver]: Analyzing ICFG ps6-ll_unwindbound100.c [2024-10-24 00:29:43,754 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-24 00:29:43,754 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-24 00:29:43,794 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-24 00:29:43,799 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;@3ae0c5f3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-24 00:29:43,799 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-24 00:29:43,802 INFO L276 IsEmpty]: Start isEmpty. Operand has 17 states, 11 states have (on average 1.5454545454545454) internal successors, (17), 12 states have internal predecessors, (17), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-10-24 00:29:43,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-10-24 00:29:43,807 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 00:29:43,808 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 00:29:43,808 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 00:29:43,811 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 00:29:43,812 INFO L85 PathProgramCache]: Analyzing trace with hash 793793432, now seen corresponding path program 1 times [2024-10-24 00:29:43,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 00:29:43,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1420189299] [2024-10-24 00:29:43,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 00:29:43,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 00:29:43,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:29:43,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 00:29:43,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 00:29:43,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1420189299] [2024-10-24 00:29:43,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1420189299] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 00:29:43,933 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 00:29:43,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-24 00:29:43,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464771598] [2024-10-24 00:29:43,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 00:29:43,938 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-24 00:29:43,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 00:29:43,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-24 00:29:43,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-24 00:29:43,959 INFO L87 Difference]: Start difference. First operand has 17 states, 11 states have (on average 1.5454545454545454) internal successors, (17), 12 states have internal predecessors, (17), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 00:29:43,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 00:29:43,985 INFO L93 Difference]: Finished difference Result 32 states and 46 transitions. [2024-10-24 00:29:43,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-24 00:29:43,987 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2024-10-24 00:29:43,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 00:29:43,993 INFO L225 Difference]: With dead ends: 32 [2024-10-24 00:29:43,993 INFO L226 Difference]: Without dead ends: 15 [2024-10-24 00:29:43,995 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-24 00:29:44,000 INFO L432 NwaCegarLoop]: 18 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, 18 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 [2024-10-24 00:29:44,001 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 18 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 00:29:44,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2024-10-24 00:29:44,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2024-10-24 00:29:44,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 10 states have (on average 1.3) internal successors, (13), 11 states have internal predecessors, (13), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-24 00:29:44,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 18 transitions. [2024-10-24 00:29:44,025 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 18 transitions. Word has length 8 [2024-10-24 00:29:44,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 00:29:44,025 INFO L471 AbstractCegarLoop]: Abstraction has 15 states and 18 transitions. [2024-10-24 00:29:44,026 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 00:29:44,026 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 18 transitions. [2024-10-24 00:29:44,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-10-24 00:29:44,026 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 00:29:44,026 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 00:29:44,027 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-24 00:29:44,027 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 00:29:44,027 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 00:29:44,028 INFO L85 PathProgramCache]: Analyzing trace with hash 1922989550, now seen corresponding path program 1 times [2024-10-24 00:29:44,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 00:29:44,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714182238] [2024-10-24 00:29:44,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 00:29:44,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 00:29:44,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:29:44,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 00:29:44,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 00:29:44,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [714182238] [2024-10-24 00:29:44,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [714182238] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 00:29:44,121 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 00:29:44,121 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 00:29:44,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340093646] [2024-10-24 00:29:44,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 00:29:44,122 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 00:29:44,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 00:29:44,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 00:29:44,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 00:29:44,123 INFO L87 Difference]: Start difference. First operand 15 states and 18 transitions. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 00:29:44,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 00:29:44,169 INFO L93 Difference]: Finished difference Result 25 states and 29 transitions. [2024-10-24 00:29:44,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 00:29:44,170 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2024-10-24 00:29:44,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 00:29:44,171 INFO L225 Difference]: With dead ends: 25 [2024-10-24 00:29:44,171 INFO L226 Difference]: Without dead ends: 17 [2024-10-24 00:29:44,171 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 00:29:44,172 INFO L432 NwaCegarLoop]: 15 mSDtfsCounter, 0 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 00:29:44,172 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 42 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 00:29:44,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2024-10-24 00:29:44,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2024-10-24 00:29:44,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 12 states have (on average 1.25) internal successors, (15), 13 states have internal predecessors, (15), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-24 00:29:44,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 20 transitions. [2024-10-24 00:29:44,182 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 20 transitions. Word has length 9 [2024-10-24 00:29:44,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 00:29:44,182 INFO L471 AbstractCegarLoop]: Abstraction has 17 states and 20 transitions. [2024-10-24 00:29:44,182 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 00:29:44,183 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 20 transitions. [2024-10-24 00:29:44,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-10-24 00:29:44,183 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 00:29:44,183 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 00:29:44,183 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-24 00:29:44,183 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 00:29:44,184 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 00:29:44,184 INFO L85 PathProgramCache]: Analyzing trace with hash 1924777010, now seen corresponding path program 1 times [2024-10-24 00:29:44,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 00:29:44,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302920681] [2024-10-24 00:29:44,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 00:29:44,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 00:29:44,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-24 00:29:44,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1342466716] [2024-10-24 00:29:44,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 00:29:44,211 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 00:29:44,211 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 00:29:44,213 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) [2024-10-24 00:29:44,214 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-24 00:29:44,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:29:44,255 INFO L255 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-24 00:29:44,259 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 00:29:44,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 00:29:44,342 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 00:29:44,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 00:29:44,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302920681] [2024-10-24 00:29:44,343 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-24 00:29:44,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1342466716] [2024-10-24 00:29:44,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1342466716] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 00:29:44,346 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 00:29:44,346 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-24 00:29:44,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218812957] [2024-10-24 00:29:44,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 00:29:44,347 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 00:29:44,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 00:29:44,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 00:29:44,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-24 00:29:44,348 INFO L87 Difference]: Start difference. First operand 17 states and 20 transitions. Second operand has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 00:29:44,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 00:29:44,394 INFO L93 Difference]: Finished difference Result 27 states and 32 transitions. [2024-10-24 00:29:44,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 00:29:44,395 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2024-10-24 00:29:44,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 00:29:44,396 INFO L225 Difference]: With dead ends: 27 [2024-10-24 00:29:44,397 INFO L226 Difference]: Without dead ends: 23 [2024-10-24 00:29:44,397 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-24 00:29:44,398 INFO L432 NwaCegarLoop]: 14 mSDtfsCounter, 4 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 00:29:44,398 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 52 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 00:29:44,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2024-10-24 00:29:44,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2024-10-24 00:29:44,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 16 states have (on average 1.1875) internal successors, (19), 17 states have internal predecessors, (19), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-10-24 00:29:44,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2024-10-24 00:29:44,404 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 9 [2024-10-24 00:29:44,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 00:29:44,404 INFO L471 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2024-10-24 00:29:44,404 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 00:29:44,404 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2024-10-24 00:29:44,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-10-24 00:29:44,405 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 00:29:44,405 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 00:29:44,418 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-10-24 00:29:44,605 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 [2024-10-24 00:29:44,606 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 00:29:44,606 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 00:29:44,606 INFO L85 PathProgramCache]: Analyzing trace with hash 76913492, now seen corresponding path program 1 times [2024-10-24 00:29:44,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 00:29:44,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [870763448] [2024-10-24 00:29:44,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 00:29:44,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 00:29:44,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:29:44,733 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-24 00:29:44,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:29:44,743 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 00:29:44,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 00:29:44,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [870763448] [2024-10-24 00:29:44,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [870763448] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 00:29:44,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [581208514] [2024-10-24 00:29:44,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 00:29:44,748 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 00:29:44,748 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 00:29:44,749 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) [2024-10-24 00:29:44,751 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-24 00:29:44,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:29:44,785 INFO L255 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-24 00:29:44,786 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 00:29:44,808 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 00:29:44,808 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 00:29:44,853 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 00:29:44,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [581208514] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 00:29:44,854 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 00:29:44,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4, 5] total 10 [2024-10-24 00:29:44,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656588157] [2024-10-24 00:29:44,854 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 00:29:44,854 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-24 00:29:44,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 00:29:44,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-24 00:29:44,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2024-10-24 00:29:44,856 INFO L87 Difference]: Start difference. First operand 23 states and 26 transitions. Second operand has 10 states, 10 states have (on average 3.0) internal successors, (30), 10 states have internal predecessors, (30), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-10-24 00:29:44,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 00:29:44,927 INFO L93 Difference]: Finished difference Result 57 states and 67 transitions. [2024-10-24 00:29:44,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-24 00:29:44,927 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.0) internal successors, (30), 10 states have internal predecessors, (30), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 17 [2024-10-24 00:29:44,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 00:29:44,929 INFO L225 Difference]: With dead ends: 57 [2024-10-24 00:29:44,929 INFO L226 Difference]: Without dead ends: 49 [2024-10-24 00:29:44,930 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2024-10-24 00:29:44,931 INFO L432 NwaCegarLoop]: 15 mSDtfsCounter, 29 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 00:29:44,931 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 75 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 00:29:44,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2024-10-24 00:29:44,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 45. [2024-10-24 00:29:44,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 30 states have (on average 1.2333333333333334) internal successors, (37), 33 states have internal predecessors, (37), 10 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-10-24 00:29:44,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 54 transitions. [2024-10-24 00:29:44,942 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 54 transitions. Word has length 17 [2024-10-24 00:29:44,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 00:29:44,942 INFO L471 AbstractCegarLoop]: Abstraction has 45 states and 54 transitions. [2024-10-24 00:29:44,942 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.0) internal successors, (30), 10 states have internal predecessors, (30), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-10-24 00:29:44,942 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 54 transitions. [2024-10-24 00:29:44,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-10-24 00:29:44,943 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 00:29:44,943 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 00:29:44,955 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-24 00:29:45,147 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 [2024-10-24 00:29:45,148 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 00:29:45,148 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 00:29:45,148 INFO L85 PathProgramCache]: Analyzing trace with hash 78700952, now seen corresponding path program 1 times [2024-10-24 00:29:45,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 00:29:45,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036431352] [2024-10-24 00:29:45,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 00:29:45,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 00:29:45,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-24 00:29:45,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [963955649] [2024-10-24 00:29:45,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 00:29:45,165 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 00:29:45,165 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 00:29:45,166 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) [2024-10-24 00:29:45,167 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-24 00:29:45,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:29:45,200 INFO L255 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-10-24 00:29:45,202 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 00:29:45,269 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 00:29:45,270 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 00:29:45,336 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-24 00:29:45,336 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 00:29:45,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036431352] [2024-10-24 00:29:45,336 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-24 00:29:45,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [963955649] [2024-10-24 00:29:45,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [963955649] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-24 00:29:45,336 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-24 00:29:45,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 7 [2024-10-24 00:29:45,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114441419] [2024-10-24 00:29:45,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 00:29:45,337 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 00:29:45,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 00:29:45,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 00:29:45,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-10-24 00:29:45,339 INFO L87 Difference]: Start difference. First operand 45 states and 54 transitions. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-10-24 00:29:45,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 00:29:45,384 INFO L93 Difference]: Finished difference Result 59 states and 67 transitions. [2024-10-24 00:29:45,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 00:29:45,386 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2024-10-24 00:29:45,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 00:29:45,388 INFO L225 Difference]: With dead ends: 59 [2024-10-24 00:29:45,388 INFO L226 Difference]: Without dead ends: 51 [2024-10-24 00:29:45,389 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 25 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-10-24 00:29:45,395 INFO L432 NwaCegarLoop]: 12 mSDtfsCounter, 5 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 00:29:45,395 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 40 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 00:29:45,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2024-10-24 00:29:45,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 45. [2024-10-24 00:29:45,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 32 states have (on average 1.125) internal successors, (36), 34 states have internal predecessors, (36), 8 states have call successors, (8), 5 states have call predecessors, (8), 4 states have return successors, (7), 5 states have call predecessors, (7), 7 states have call successors, (7) [2024-10-24 00:29:45,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 51 transitions. [2024-10-24 00:29:45,416 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 51 transitions. Word has length 17 [2024-10-24 00:29:45,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 00:29:45,416 INFO L471 AbstractCegarLoop]: Abstraction has 45 states and 51 transitions. [2024-10-24 00:29:45,416 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-10-24 00:29:45,422 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 51 transitions. [2024-10-24 00:29:45,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-10-24 00:29:45,423 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 00:29:45,423 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 00:29:45,435 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-10-24 00:29:45,627 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 [2024-10-24 00:29:45,628 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 00:29:45,628 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 00:29:45,628 INFO L85 PathProgramCache]: Analyzing trace with hash 731759343, now seen corresponding path program 1 times [2024-10-24 00:29:45,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 00:29:45,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699525871] [2024-10-24 00:29:45,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 00:29:45,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 00:29:45,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-24 00:29:45,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [136331529] [2024-10-24 00:29:45,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 00:29:45,654 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 00:29:45,654 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 00:29:45,658 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) [2024-10-24 00:29:45,659 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-24 00:29:45,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:29:45,695 INFO L255 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-24 00:29:45,696 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 00:29:45,784 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-24 00:29:45,784 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 00:29:45,874 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-24 00:29:45,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 00:29:45,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1699525871] [2024-10-24 00:29:45,876 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-24 00:29:45,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [136331529] [2024-10-24 00:29:45,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [136331529] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 00:29:45,876 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-24 00:29:45,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2024-10-24 00:29:45,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006210703] [2024-10-24 00:29:45,876 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-24 00:29:45,877 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-24 00:29:45,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 00:29:45,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-24 00:29:45,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-10-24 00:29:45,878 INFO L87 Difference]: Start difference. First operand 45 states and 51 transitions. Second operand has 10 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 6 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-10-24 00:29:45,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 00:29:45,972 INFO L93 Difference]: Finished difference Result 54 states and 62 transitions. [2024-10-24 00:29:45,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-24 00:29:45,972 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 6 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Word has length 28 [2024-10-24 00:29:45,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 00:29:45,974 INFO L225 Difference]: With dead ends: 54 [2024-10-24 00:29:45,974 INFO L226 Difference]: Without dead ends: 45 [2024-10-24 00:29:45,974 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 44 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2024-10-24 00:29:45,975 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 1 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 00:29:45,975 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 98 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 00:29:45,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2024-10-24 00:29:45,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2024-10-24 00:29:45,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 33 states have (on average 1.0606060606060606) internal successors, (35), 33 states have internal predecessors, (35), 7 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-10-24 00:29:45,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 48 transitions. [2024-10-24 00:29:45,990 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 48 transitions. Word has length 28 [2024-10-24 00:29:45,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 00:29:45,990 INFO L471 AbstractCegarLoop]: Abstraction has 45 states and 48 transitions. [2024-10-24 00:29:45,990 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 6 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-10-24 00:29:45,990 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 48 transitions. [2024-10-24 00:29:45,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-10-24 00:29:45,991 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 00:29:45,991 INFO L215 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 00:29:46,004 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-10-24 00:29:46,195 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 [2024-10-24 00:29:46,196 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 00:29:46,196 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 00:29:46,196 INFO L85 PathProgramCache]: Analyzing trace with hash -1074423298, now seen corresponding path program 1 times [2024-10-24 00:29:46,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 00:29:46,196 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691861021] [2024-10-24 00:29:46,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 00:29:46,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 00:29:46,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:29:46,365 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-24 00:29:46,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:29:46,373 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-10-24 00:29:46,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:29:46,376 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-10-24 00:29:46,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:29:46,384 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-10-24 00:29:46,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:29:46,388 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-24 00:29:46,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:29:46,391 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 10 proven. 32 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-10-24 00:29:46,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 00:29:46,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1691861021] [2024-10-24 00:29:46,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1691861021] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 00:29:46,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [66346136] [2024-10-24 00:29:46,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 00:29:46,392 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 00:29:46,392 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 00:29:46,393 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) [2024-10-24 00:29:46,401 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-24 00:29:46,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:29:46,447 INFO L255 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-10-24 00:29:46,448 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 00:29:46,500 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 24 proven. 56 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-24 00:29:46,502 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 00:29:46,599 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 10 proven. 32 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-10-24 00:29:46,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [66346136] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 00:29:46,599 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 00:29:46,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 8] total 16 [2024-10-24 00:29:46,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660926187] [2024-10-24 00:29:46,599 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 00:29:46,600 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-10-24 00:29:46,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 00:29:46,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-10-24 00:29:46,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=144, Unknown=0, NotChecked=0, Total=240 [2024-10-24 00:29:46,601 INFO L87 Difference]: Start difference. First operand 45 states and 48 transitions. Second operand has 16 states, 16 states have (on average 3.6875) internal successors, (59), 16 states have internal predecessors, (59), 9 states have call successors, (15), 6 states have call predecessors, (15), 6 states have return successors, (14), 9 states have call predecessors, (14), 9 states have call successors, (14) [2024-10-24 00:29:46,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 00:29:46,798 INFO L93 Difference]: Finished difference Result 131 states and 143 transitions. [2024-10-24 00:29:46,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-10-24 00:29:46,799 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.6875) internal successors, (59), 16 states have internal predecessors, (59), 9 states have call successors, (15), 6 states have call predecessors, (15), 6 states have return successors, (14), 9 states have call predecessors, (14), 9 states have call successors, (14) Word has length 46 [2024-10-24 00:29:46,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 00:29:46,800 INFO L225 Difference]: With dead ends: 131 [2024-10-24 00:29:46,800 INFO L226 Difference]: Without dead ends: 121 [2024-10-24 00:29:46,800 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=196, Invalid=356, Unknown=0, NotChecked=0, Total=552 [2024-10-24 00:29:46,801 INFO L432 NwaCegarLoop]: 15 mSDtfsCounter, 71 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 00:29:46,801 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 111 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 00:29:46,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2024-10-24 00:29:46,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 96. [2024-10-24 00:29:46,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 68 states have (on average 1.1029411764705883) internal successors, (75), 73 states have internal predecessors, (75), 17 states have call successors, (17), 11 states have call predecessors, (17), 10 states have return successors, (16), 11 states have call predecessors, (16), 16 states have call successors, (16) [2024-10-24 00:29:46,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 108 transitions. [2024-10-24 00:29:46,818 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 108 transitions. Word has length 46 [2024-10-24 00:29:46,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 00:29:46,819 INFO L471 AbstractCegarLoop]: Abstraction has 96 states and 108 transitions. [2024-10-24 00:29:46,819 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.6875) internal successors, (59), 16 states have internal predecessors, (59), 9 states have call successors, (15), 6 states have call predecessors, (15), 6 states have return successors, (14), 9 states have call predecessors, (14), 9 states have call successors, (14) [2024-10-24 00:29:46,819 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 108 transitions. [2024-10-24 00:29:46,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-10-24 00:29:46,820 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 00:29:46,820 INFO L215 NwaCegarLoop]: trace histogram [7, 6, 6, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 00:29:46,832 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-10-24 00:29:47,024 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 [2024-10-24 00:29:47,025 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 00:29:47,025 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 00:29:47,025 INFO L85 PathProgramCache]: Analyzing trace with hash -1441866883, now seen corresponding path program 2 times [2024-10-24 00:29:47,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 00:29:47,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152158912] [2024-10-24 00:29:47,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 00:29:47,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 00:29:47,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-24 00:29:47,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1999574397] [2024-10-24 00:29:47,044 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-24 00:29:47,045 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 00:29:47,045 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 00:29:47,046 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) [2024-10-24 00:29:47,047 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-24 00:29:47,089 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-24 00:29:47,089 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-24 00:29:47,090 INFO L255 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 45 conjuncts are in the unsatisfiable core [2024-10-24 00:29:47,092 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 00:29:47,363 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 26 proven. 41 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-10-24 00:29:47,364 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 00:29:47,933 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 26 proven. 41 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-10-24 00:29:47,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 00:29:47,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152158912] [2024-10-24 00:29:47,933 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-24 00:29:47,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1999574397] [2024-10-24 00:29:47,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1999574397] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 00:29:47,933 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-24 00:29:47,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 12] total 24 [2024-10-24 00:29:47,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704652423] [2024-10-24 00:29:47,933 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-24 00:29:47,934 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-10-24 00:29:47,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 00:29:47,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-10-24 00:29:47,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=465, Unknown=0, NotChecked=0, Total=552 [2024-10-24 00:29:47,936 INFO L87 Difference]: Start difference. First operand 96 states and 108 transitions. Second operand has 24 states, 20 states have (on average 2.45) internal successors, (49), 21 states have internal predecessors, (49), 14 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-10-24 00:29:48,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 00:29:48,491 INFO L93 Difference]: Finished difference Result 102 states and 113 transitions. [2024-10-24 00:29:48,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-10-24 00:29:48,491 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 20 states have (on average 2.45) internal successors, (49), 21 states have internal predecessors, (49), 14 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) Word has length 52 [2024-10-24 00:29:48,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 00:29:48,492 INFO L225 Difference]: With dead ends: 102 [2024-10-24 00:29:48,492 INFO L226 Difference]: Without dead ends: 91 [2024-10-24 00:29:48,493 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 207 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=202, Invalid=988, Unknown=0, NotChecked=0, Total=1190 [2024-10-24 00:29:48,493 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 25 mSDsluCounter, 275 mSDsCounter, 0 mSdLazyCounter, 286 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 296 SdHoareTripleChecker+Invalid, 299 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 286 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-24 00:29:48,493 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 296 Invalid, 299 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 286 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-24 00:29:48,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2024-10-24 00:29:48,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2024-10-24 00:29:48,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 68 states have (on average 1.0294117647058822) internal successors, (70), 68 states have internal predecessors, (70), 12 states have call successors, (12), 11 states have call predecessors, (12), 10 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2024-10-24 00:29:48,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 93 transitions. [2024-10-24 00:29:48,513 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 93 transitions. Word has length 52 [2024-10-24 00:29:48,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 00:29:48,513 INFO L471 AbstractCegarLoop]: Abstraction has 91 states and 93 transitions. [2024-10-24 00:29:48,513 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 20 states have (on average 2.45) internal successors, (49), 21 states have internal predecessors, (49), 14 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-10-24 00:29:48,513 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 93 transitions. [2024-10-24 00:29:48,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2024-10-24 00:29:48,514 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 00:29:48,514 INFO L215 NwaCegarLoop]: trace histogram [12, 11, 11, 10, 10, 10, 10, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 00:29:48,527 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-10-24 00:29:48,718 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 [2024-10-24 00:29:48,719 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 00:29:48,719 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 00:29:48,719 INFO L85 PathProgramCache]: Analyzing trace with hash -1566715457, now seen corresponding path program 3 times [2024-10-24 00:29:48,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 00:29:48,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146420094] [2024-10-24 00:29:48,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 00:29:48,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 00:29:48,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-24 00:29:48,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1569013463] [2024-10-24 00:29:48,762 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-24 00:29:48,762 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 00:29:48,762 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 00:29:48,763 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) [2024-10-24 00:29:48,764 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-24 00:29:48,851 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2024-10-24 00:29:48,851 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-24 00:29:48,853 INFO L255 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 54 conjuncts are in the unsatisfiable core [2024-10-24 00:29:48,855 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 00:29:49,086 INFO L134 CoverageAnalysis]: Checked inductivity of 422 backedges. 27 proven. 205 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2024-10-24 00:29:49,086 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 00:29:57,454 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|))) (or (= (+ .cse0 (* |c_ULTIMATE.start_main_~y~0#1| 7)) (+ (* |c_ULTIMATE.start_main_~c~0#1| 7) (* |c_ULTIMATE.start_main_~c~0#1| |c_ULTIMATE.start_main_~y~0#1|))) (not (= 0 (mod (+ (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 10) (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 7) .cse0 (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 6)) 12))))) is different from false [2024-10-24 00:30:05,488 WARN L286 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 4 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-10-24 00:30:17,503 WARN L286 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 4 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-10-24 00:30:33,663 WARN L286 SmtUtils]: Spent 8.14s on a formula simplification that was a NOOP. DAG size: 10 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-10-24 00:30:37,679 WARN L873 $PredicateComparison]: unable to prove that (or (not (= |c___VERIFIER_assert_#in~cond| 0)) (forall ((|v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_45| Int) (|v_ULTIMATE.start_main_~c~0#1_BEFORE_CALL_32| Int)) (let ((.cse0 (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_45| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_45|))) (or (= 0 (mod (+ (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_45| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_45| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_45| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_45| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_45| 6) (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_45| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_45| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_45| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_45| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_45| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_45| 10) .cse0 (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_45| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_45| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_45| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_45| 7)) 12)) (= (+ (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_45| 7) .cse0) (+ (* 7 |v_ULTIMATE.start_main_~c~0#1_BEFORE_CALL_32|) (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_45| |v_ULTIMATE.start_main_~c~0#1_BEFORE_CALL_32|))))))) is different from true [2024-10-24 00:30:53,717 WARN L286 SmtUtils]: Spent 8.02s on a formula simplification that was a NOOP. DAG size: 10 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-10-24 00:31:09,743 WARN L286 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 10 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-10-24 00:31:13,747 WARN L873 $PredicateComparison]: unable to prove that (or (not (= |c___VERIFIER_assert_#in~cond| 0)) (forall ((|v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_45| Int) (|v_ULTIMATE.start_main_~c~0#1_BEFORE_CALL_32| Int)) (let ((.cse0 (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_45| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_45|))) (or (= 0 (mod (+ (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_45| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_45| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_45| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_45| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_45| 6) (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_45| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_45| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_45| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_45| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_45| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_45| 10) .cse0 (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_45| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_45| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_45| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_45| 7)) 12)) (= (+ (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_45| 7) .cse0) (+ (* 7 |v_ULTIMATE.start_main_~c~0#1_BEFORE_CALL_32|) (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_45| |v_ULTIMATE.start_main_~c~0#1_BEFORE_CALL_32|)))))) (= c___VERIFIER_assert_~cond 0)) is different from true [2024-10-24 00:31:29,784 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|))) (or (= (+ .cse0 (* |c_ULTIMATE.start_main_~y~0#1| 8)) (+ (* |c_ULTIMATE.start_main_~c~0#1| |c_ULTIMATE.start_main_~y~0#1|) (* |c_ULTIMATE.start_main_~c~0#1| 8))) (not (= 0 (mod (+ (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 10) (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 7) .cse0 (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 6)) 12))))) is different from false