./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/hard-ll_valuebound2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a046e57d Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/hard-ll_valuebound2.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 9851f41ad4fb2d0ff96507e8e48f0d2886a8de6481eed845b23377b9fa492b45 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-mul-div-a046e57-m [2024-10-12 18:59:49,808 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-12 18:59:49,862 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-12 18:59:49,866 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-12 18:59:49,867 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-12 18:59:49,891 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-12 18:59:49,892 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-12 18:59:49,893 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-12 18:59:49,893 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-12 18:59:49,894 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-12 18:59:49,895 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-12 18:59:49,895 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-12 18:59:49,895 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-12 18:59:49,896 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-12 18:59:49,896 INFO L153 SettingsManager]: * Use SBE=true [2024-10-12 18:59:49,896 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-12 18:59:49,897 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-12 18:59:49,897 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-12 18:59:49,897 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-12 18:59:49,897 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-12 18:59:49,898 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-12 18:59:49,898 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-12 18:59:49,898 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-12 18:59:49,899 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-12 18:59:49,899 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-12 18:59:49,899 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-12 18:59:49,899 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-12 18:59:49,900 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-12 18:59:49,900 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-12 18:59:49,900 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-12 18:59:49,900 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-12 18:59:49,901 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-12 18:59:49,901 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-12 18:59:49,901 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-12 18:59:49,901 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-12 18:59:49,901 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-12 18:59:49,902 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-12 18:59:49,902 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-12 18:59:49,902 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-12 18:59:49,902 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-12 18:59:49,902 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-12 18:59:49,903 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-12 18:59:49,903 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9851f41ad4fb2d0ff96507e8e48f0d2886a8de6481eed845b23377b9fa492b45 [2024-10-12 18:59:50,096 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-12 18:59:50,119 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-12 18:59:50,122 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-12 18:59:50,122 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-12 18:59:50,123 INFO L274 PluginConnector]: CDTParser initialized [2024-10-12 18:59:50,123 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/hard-ll_valuebound2.c [2024-10-12 18:59:51,315 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-12 18:59:51,457 INFO L384 CDTParser]: Found 1 translation units. [2024-10-12 18:59:51,458 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/hard-ll_valuebound2.c [2024-10-12 18:59:51,465 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/409504888/13ed2070a4c14671b9d7f3257aebc6c7/FLAG19e590201 [2024-10-12 18:59:51,479 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/409504888/13ed2070a4c14671b9d7f3257aebc6c7 [2024-10-12 18:59:51,482 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-12 18:59:51,483 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-12 18:59:51,486 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-12 18:59:51,486 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-12 18:59:51,490 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-12 18:59:51,491 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 06:59:51" (1/1) ... [2024-10-12 18:59:51,493 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c271ea0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:59:51, skipping insertion in model container [2024-10-12 18:59:51,493 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 06:59:51" (1/1) ... [2024-10-12 18:59:51,535 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-12 18:59:51,675 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/hard-ll_valuebound2.c[538,551] [2024-10-12 18:59:51,686 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-12 18:59:51,692 INFO L200 MainTranslator]: Completed pre-run [2024-10-12 18:59:51,703 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/hard-ll_valuebound2.c[538,551] [2024-10-12 18:59:51,708 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-12 18:59:51,719 INFO L204 MainTranslator]: Completed translation [2024-10-12 18:59:51,719 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:59:51 WrapperNode [2024-10-12 18:59:51,719 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-12 18:59:51,720 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-12 18:59:51,720 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-12 18:59:51,720 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-12 18:59:51,725 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:59:51" (1/1) ... [2024-10-12 18:59:51,732 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:59:51" (1/1) ... [2024-10-12 18:59:51,744 INFO L138 Inliner]: procedures = 14, calls = 17, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 56 [2024-10-12 18:59:51,744 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-12 18:59:51,745 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-12 18:59:51,745 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-12 18:59:51,745 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-12 18:59:51,752 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:59:51" (1/1) ... [2024-10-12 18:59:51,753 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:59:51" (1/1) ... [2024-10-12 18:59:51,754 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:59:51" (1/1) ... [2024-10-12 18:59:51,761 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-10-12 18:59:51,761 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:59:51" (1/1) ... [2024-10-12 18:59:51,761 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:59:51" (1/1) ... [2024-10-12 18:59:51,764 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:59:51" (1/1) ... [2024-10-12 18:59:51,768 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:59:51" (1/1) ... [2024-10-12 18:59:51,772 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:59:51" (1/1) ... [2024-10-12 18:59:51,772 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:59:51" (1/1) ... [2024-10-12 18:59:51,773 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-12 18:59:51,774 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-12 18:59:51,774 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-12 18:59:51,774 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-12 18:59:51,775 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:59:51" (1/1) ... [2024-10-12 18:59:51,782 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-12 18:59:51,790 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 18:59:51,802 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-12 18:59:51,807 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-12 18:59:51,840 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-12 18:59:51,840 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-10-12 18:59:51,840 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-10-12 18:59:51,840 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-12 18:59:51,840 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-12 18:59:51,841 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-12 18:59:51,841 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-10-12 18:59:51,842 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-10-12 18:59:51,893 INFO L238 CfgBuilder]: Building ICFG [2024-10-12 18:59:51,896 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-12 18:59:52,031 INFO L? ?]: Removed 6 outVars from TransFormulas that were not future-live. [2024-10-12 18:59:52,032 INFO L287 CfgBuilder]: Performing block encoding [2024-10-12 18:59:52,053 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-12 18:59:52,055 INFO L314 CfgBuilder]: Removed 2 assume(true) statements. [2024-10-12 18:59:52,055 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 06:59:52 BoogieIcfgContainer [2024-10-12 18:59:52,055 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-12 18:59:52,057 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-12 18:59:52,057 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-12 18:59:52,060 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-12 18:59:52,060 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 06:59:51" (1/3) ... [2024-10-12 18:59:52,061 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a34d498 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 06:59:52, skipping insertion in model container [2024-10-12 18:59:52,061 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:59:51" (2/3) ... [2024-10-12 18:59:52,061 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a34d498 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 06:59:52, skipping insertion in model container [2024-10-12 18:59:52,062 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 06:59:52" (3/3) ... [2024-10-12 18:59:52,065 INFO L112 eAbstractionObserver]: Analyzing ICFG hard-ll_valuebound2.c [2024-10-12 18:59:52,077 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-12 18:59:52,077 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-12 18:59:52,130 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-12 18:59:52,136 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;@2bb2b788, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-12 18:59:52,137 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-12 18:59:52,140 INFO L276 IsEmpty]: Start isEmpty. Operand has 30 states, 16 states have (on average 1.625) internal successors, (26), 17 states have internal predecessors, (26), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-10-12 18:59:52,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-10-12 18:59:52,146 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 18:59:52,148 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 18:59:52,148 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 18:59:52,152 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 18:59:52,152 INFO L85 PathProgramCache]: Analyzing trace with hash 760957734, now seen corresponding path program 1 times [2024-10-12 18:59:52,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 18:59:52,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1234953361] [2024-10-12 18:59:52,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:59:52,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 18:59:52,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:59:52,262 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 18:59:52,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:59:52,268 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-12 18:59:52,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:59:52,272 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-12 18:59:52,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:59:52,276 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-12 18:59:52,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 18:59:52,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1234953361] [2024-10-12 18:59:52,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1234953361] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 18:59:52,277 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 18:59:52,277 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-12 18:59:52,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033793569] [2024-10-12 18:59:52,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 18:59:52,281 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-12 18:59:52,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 18:59:52,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-12 18:59:52,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-12 18:59:52,297 INFO L87 Difference]: Start difference. First operand has 30 states, 16 states have (on average 1.625) internal successors, (26), 17 states have internal predecessors, (26), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2024-10-12 18:59:52,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 18:59:52,315 INFO L93 Difference]: Finished difference Result 58 states and 99 transitions. [2024-10-12 18:59:52,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-12 18:59:52,317 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 23 [2024-10-12 18:59:52,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 18:59:52,322 INFO L225 Difference]: With dead ends: 58 [2024-10-12 18:59:52,322 INFO L226 Difference]: Without dead ends: 28 [2024-10-12 18:59:52,324 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-12 18:59:52,326 INFO L432 NwaCegarLoop]: 38 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, 38 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-12 18:59:52,327 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 38 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 18:59:52,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2024-10-12 18:59:52,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2024-10-12 18:59:52,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 15 states have (on average 1.2666666666666666) internal successors, (19), 16 states have internal predecessors, (19), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-10-12 18:59:52,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 38 transitions. [2024-10-12 18:59:52,351 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 38 transitions. Word has length 23 [2024-10-12 18:59:52,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 18:59:52,351 INFO L471 AbstractCegarLoop]: Abstraction has 28 states and 38 transitions. [2024-10-12 18:59:52,351 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2024-10-12 18:59:52,352 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 38 transitions. [2024-10-12 18:59:52,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-10-12 18:59:52,352 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 18:59:52,353 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 18:59:52,353 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-12 18:59:52,353 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 18:59:52,353 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 18:59:52,354 INFO L85 PathProgramCache]: Analyzing trace with hash -387749596, now seen corresponding path program 1 times [2024-10-12 18:59:52,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 18:59:52,354 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1701392574] [2024-10-12 18:59:52,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:59:52,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 18:59:52,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:59:52,505 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 18:59:52,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:59:52,511 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-12 18:59:52,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:59:52,519 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-12 18:59:52,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:59:52,545 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-12 18:59:52,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 18:59:52,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1701392574] [2024-10-12 18:59:52,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1701392574] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 18:59:52,546 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 18:59:52,546 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-12 18:59:52,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630067869] [2024-10-12 18:59:52,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 18:59:52,547 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-12 18:59:52,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 18:59:52,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-12 18:59:52,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-12 18:59:52,548 INFO L87 Difference]: Start difference. First operand 28 states and 38 transitions. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-10-12 18:59:52,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 18:59:52,622 INFO L93 Difference]: Finished difference Result 41 states and 55 transitions. [2024-10-12 18:59:52,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-12 18:59:52,623 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 23 [2024-10-12 18:59:52,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 18:59:52,624 INFO L225 Difference]: With dead ends: 41 [2024-10-12 18:59:52,625 INFO L226 Difference]: Without dead ends: 39 [2024-10-12 18:59:52,625 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-12 18:59:52,627 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 9 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 119 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-12 18:59:52,627 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 119 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 18:59:52,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2024-10-12 18:59:52,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 32. [2024-10-12 18:59:52,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 18 states have (on average 1.2222222222222223) internal successors, (22), 19 states have internal predecessors, (22), 10 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-10-12 18:59:52,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 41 transitions. [2024-10-12 18:59:52,641 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 41 transitions. Word has length 23 [2024-10-12 18:59:52,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 18:59:52,643 INFO L471 AbstractCegarLoop]: Abstraction has 32 states and 41 transitions. [2024-10-12 18:59:52,643 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-10-12 18:59:52,643 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 41 transitions. [2024-10-12 18:59:52,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-10-12 18:59:52,644 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 18:59:52,645 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 18:59:52,645 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-12 18:59:52,645 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 18:59:52,646 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 18:59:52,646 INFO L85 PathProgramCache]: Analyzing trace with hash -1391236353, now seen corresponding path program 1 times [2024-10-12 18:59:52,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 18:59:52,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1306639383] [2024-10-12 18:59:52,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:59:52,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 18:59:52,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:59:52,789 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 18:59:52,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:59:52,795 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-12 18:59:52,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:59:52,800 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-12 18:59:52,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:59:52,807 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-10-12 18:59:52,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:59:52,820 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-12 18:59:52,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 18:59:52,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1306639383] [2024-10-12 18:59:52,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1306639383] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 18:59:52,822 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 18:59:52,822 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-12 18:59:52,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583565616] [2024-10-12 18:59:52,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 18:59:52,823 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-12 18:59:52,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 18:59:52,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-12 18:59:52,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-12 18:59:52,824 INFO L87 Difference]: Start difference. First operand 32 states and 41 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-10-12 18:59:52,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 18:59:52,886 INFO L93 Difference]: Finished difference Result 45 states and 58 transitions. [2024-10-12 18:59:52,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-12 18:59:52,886 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 28 [2024-10-12 18:59:52,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 18:59:52,889 INFO L225 Difference]: With dead ends: 45 [2024-10-12 18:59:52,889 INFO L226 Difference]: Without dead ends: 43 [2024-10-12 18:59:52,890 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-12 18:59:52,890 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 9 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-12 18:59:52,891 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 116 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 18:59:52,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2024-10-12 18:59:52,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 36. [2024-10-12 18:59:52,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 21 states have (on average 1.1904761904761905) internal successors, (25), 22 states have internal predecessors, (25), 10 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-10-12 18:59:52,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 44 transitions. [2024-10-12 18:59:52,898 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 44 transitions. Word has length 28 [2024-10-12 18:59:52,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 18:59:52,899 INFO L471 AbstractCegarLoop]: Abstraction has 36 states and 44 transitions. [2024-10-12 18:59:52,899 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-10-12 18:59:52,899 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 44 transitions. [2024-10-12 18:59:52,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-10-12 18:59:52,900 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 18:59:52,900 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 18:59:52,900 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-12 18:59:52,900 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 18:59:52,901 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 18:59:52,901 INFO L85 PathProgramCache]: Analyzing trace with hash 831418820, now seen corresponding path program 1 times [2024-10-12 18:59:52,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 18:59:52,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1817848230] [2024-10-12 18:59:52,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:59:52,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 18:59:52,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-12 18:59:52,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1092434848] [2024-10-12 18:59:52,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:59:52,919 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:59:52,920 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 18:59:52,922 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 18:59:52,923 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-12 18:59:52,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:59:52,974 INFO L255 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-12 18:59:52,978 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 18:59:53,062 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-10-12 18:59:53,062 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 18:59:53,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 18:59:53,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1817848230] [2024-10-12 18:59:53,064 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-12 18:59:53,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1092434848] [2024-10-12 18:59:53,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1092434848] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 18:59:53,064 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 18:59:53,064 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-12 18:59:53,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499198622] [2024-10-12 18:59:53,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 18:59:53,066 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-12 18:59:53,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 18:59:53,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-12 18:59:53,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-12 18:59:53,068 INFO L87 Difference]: Start difference. First operand 36 states and 44 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-12 18:59:53,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 18:59:53,132 INFO L93 Difference]: Finished difference Result 62 states and 81 transitions. [2024-10-12 18:59:53,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-12 18:59:53,132 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 33 [2024-10-12 18:59:53,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 18:59:53,133 INFO L225 Difference]: With dead ends: 62 [2024-10-12 18:59:53,133 INFO L226 Difference]: Without dead ends: 49 [2024-10-12 18:59:53,134 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-12 18:59:53,135 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 5 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-12 18:59:53,135 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 117 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 18:59:53,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2024-10-12 18:59:53,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2024-10-12 18:59:53,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 28 states have (on average 1.1785714285714286) internal successors, (33), 29 states have internal predecessors, (33), 15 states have call successors, (15), 5 states have call predecessors, (15), 5 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2024-10-12 18:59:53,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 62 transitions. [2024-10-12 18:59:53,150 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 62 transitions. Word has length 33 [2024-10-12 18:59:53,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 18:59:53,151 INFO L471 AbstractCegarLoop]: Abstraction has 49 states and 62 transitions. [2024-10-12 18:59:53,151 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-12 18:59:53,151 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 62 transitions. [2024-10-12 18:59:53,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-10-12 18:59:53,152 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 18:59:53,152 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 18:59:53,167 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-10-12 18:59:53,352 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:59:53,353 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 18:59:53,353 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 18:59:53,353 INFO L85 PathProgramCache]: Analyzing trace with hash -1016562388, now seen corresponding path program 1 times [2024-10-12 18:59:53,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 18:59:53,354 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207220844] [2024-10-12 18:59:53,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:59:53,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 18:59:53,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-12 18:59:53,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [628260800] [2024-10-12 18:59:53,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:59:53,367 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:59:53,367 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 18:59:53,369 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 18:59:53,370 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-12 18:59:53,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:59:53,416 INFO L255 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-10-12 18:59:53,418 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 18:59:53,499 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-10-12 18:59:53,499 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 18:59:53,665 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-10-12 18:59:53,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 18:59:53,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1207220844] [2024-10-12 18:59:53,666 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-12 18:59:53,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [628260800] [2024-10-12 18:59:53,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [628260800] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 18:59:53,667 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-12 18:59:53,667 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2024-10-12 18:59:53,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425484849] [2024-10-12 18:59:53,667 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-12 18:59:53,667 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-12 18:59:53,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 18:59:53,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-12 18:59:53,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-10-12 18:59:53,668 INFO L87 Difference]: Start difference. First operand 49 states and 62 transitions. Second operand has 10 states, 10 states have (on average 2.4) internal successors, (24), 9 states have internal predecessors, (24), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 3 states have call successors, (7) [2024-10-12 18:59:53,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 18:59:53,783 INFO L93 Difference]: Finished difference Result 64 states and 82 transitions. [2024-10-12 18:59:53,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-12 18:59:53,784 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.4) internal successors, (24), 9 states have internal predecessors, (24), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 3 states have call successors, (7) Word has length 40 [2024-10-12 18:59:53,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 18:59:53,785 INFO L225 Difference]: With dead ends: 64 [2024-10-12 18:59:53,785 INFO L226 Difference]: Without dead ends: 62 [2024-10-12 18:59:53,786 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 69 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-10-12 18:59:53,788 INFO L432 NwaCegarLoop]: 24 mSDtfsCounter, 15 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 161 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 18:59:53,788 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 161 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 18:59:53,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2024-10-12 18:59:53,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 59. [2024-10-12 18:59:53,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 34 states have (on average 1.2058823529411764) internal successors, (41), 36 states have internal predecessors, (41), 18 states have call successors, (18), 6 states have call predecessors, (18), 6 states have return successors, (17), 16 states have call predecessors, (17), 17 states have call successors, (17) [2024-10-12 18:59:53,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 76 transitions. [2024-10-12 18:59:53,804 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 76 transitions. Word has length 40 [2024-10-12 18:59:53,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 18:59:53,804 INFO L471 AbstractCegarLoop]: Abstraction has 59 states and 76 transitions. [2024-10-12 18:59:53,805 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.4) internal successors, (24), 9 states have internal predecessors, (24), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 3 states have call successors, (7) [2024-10-12 18:59:53,805 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 76 transitions. [2024-10-12 18:59:53,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-10-12 18:59:53,806 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 18:59:53,806 INFO L215 NwaCegarLoop]: trace histogram [6, 5, 5, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 18:59:53,820 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-12 18:59:54,010 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:59:54,011 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 18:59:54,011 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 18:59:54,011 INFO L85 PathProgramCache]: Analyzing trace with hash -1147651331, now seen corresponding path program 1 times [2024-10-12 18:59:54,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 18:59:54,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1932685766] [2024-10-12 18:59:54,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:59:54,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 18:59:54,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-12 18:59:54,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [905967413] [2024-10-12 18:59:54,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:59:54,029 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:59:54,029 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 18:59:54,031 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 18:59:54,032 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-12 18:59:54,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:59:54,080 INFO L255 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-10-12 18:59:54,090 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 18:59:54,160 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2024-10-12 18:59:54,160 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 18:59:54,232 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-10-12 18:59:54,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 18:59:54,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1932685766] [2024-10-12 18:59:54,233 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-12 18:59:54,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [905967413] [2024-10-12 18:59:54,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [905967413] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-12 18:59:54,233 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 18:59:54,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 7 [2024-10-12 18:59:54,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815314330] [2024-10-12 18:59:54,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 18:59:54,233 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-12 18:59:54,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 18:59:54,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-12 18:59:54,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-10-12 18:59:54,234 INFO L87 Difference]: Start difference. First operand 59 states and 76 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-10-12 18:59:54,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 18:59:54,300 INFO L93 Difference]: Finished difference Result 69 states and 88 transitions. [2024-10-12 18:59:54,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-12 18:59:54,300 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 50 [2024-10-12 18:59:54,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 18:59:54,301 INFO L225 Difference]: With dead ends: 69 [2024-10-12 18:59:54,301 INFO L226 Difference]: Without dead ends: 67 [2024-10-12 18:59:54,302 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 91 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-10-12 18:59:54,302 INFO L432 NwaCegarLoop]: 32 mSDtfsCounter, 5 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 18:59:54,303 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 110 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 18:59:54,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2024-10-12 18:59:54,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 66. [2024-10-12 18:59:54,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 38 states have (on average 1.1842105263157894) internal successors, (45), 41 states have internal predecessors, (45), 20 states have call successors, (20), 7 states have call predecessors, (20), 7 states have return successors, (19), 17 states have call predecessors, (19), 19 states have call successors, (19) [2024-10-12 18:59:54,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 84 transitions. [2024-10-12 18:59:54,313 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 84 transitions. Word has length 50 [2024-10-12 18:59:54,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 18:59:54,314 INFO L471 AbstractCegarLoop]: Abstraction has 66 states and 84 transitions. [2024-10-12 18:59:54,314 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-10-12 18:59:54,314 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 84 transitions. [2024-10-12 18:59:54,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-10-12 18:59:54,315 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 18:59:54,315 INFO L215 NwaCegarLoop]: trace histogram [7, 6, 6, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 18:59:54,328 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-12 18:59:54,515 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:59:54,516 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 18:59:54,516 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 18:59:54,516 INFO L85 PathProgramCache]: Analyzing trace with hash 73871321, now seen corresponding path program 1 times [2024-10-12 18:59:54,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 18:59:54,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1792982318] [2024-10-12 18:59:54,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:59:54,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 18:59:54,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:59:54,618 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 18:59:54,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:59:54,624 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-12 18:59:54,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:59:54,626 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-12 18:59:54,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:59:54,630 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-10-12 18:59:54,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:59:54,633 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-10-12 18:59:54,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:59:54,639 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-10-12 18:59:54,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:59:54,643 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-10-12 18:59:54,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:59:54,650 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-10-12 18:59:54,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:59:54,655 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-10-12 18:59:54,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:59:54,659 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2024-10-12 18:59:54,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 18:59:54,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1792982318] [2024-10-12 18:59:54,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1792982318] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 18:59:54,661 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 18:59:54,661 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-12 18:59:54,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035542666] [2024-10-12 18:59:54,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 18:59:54,661 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-12 18:59:54,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 18:59:54,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-12 18:59:54,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-12 18:59:54,662 INFO L87 Difference]: Start difference. First operand 66 states and 84 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-10-12 18:59:54,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 18:59:54,709 INFO L93 Difference]: Finished difference Result 74 states and 92 transitions. [2024-10-12 18:59:54,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-12 18:59:54,710 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 56 [2024-10-12 18:59:54,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 18:59:54,712 INFO L225 Difference]: With dead ends: 74 [2024-10-12 18:59:54,712 INFO L226 Difference]: Without dead ends: 62 [2024-10-12 18:59:54,712 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-12 18:59:54,716 INFO L432 NwaCegarLoop]: 36 mSDtfsCounter, 3 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 127 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-12 18:59:54,716 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 127 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 18:59:54,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2024-10-12 18:59:54,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2024-10-12 18:59:54,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 36 states have (on average 1.1666666666666667) internal successors, (42), 39 states have internal predecessors, (42), 18 states have call successors, (18), 7 states have call predecessors, (18), 7 states have return successors, (17), 15 states have call predecessors, (17), 17 states have call successors, (17) [2024-10-12 18:59:54,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 77 transitions. [2024-10-12 18:59:54,730 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 77 transitions. Word has length 56 [2024-10-12 18:59:54,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 18:59:54,730 INFO L471 AbstractCegarLoop]: Abstraction has 62 states and 77 transitions. [2024-10-12 18:59:54,730 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-10-12 18:59:54,730 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 77 transitions. [2024-10-12 18:59:54,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-10-12 18:59:54,734 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 18:59:54,734 INFO L215 NwaCegarLoop]: trace histogram [9, 8, 8, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 18:59:54,734 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-12 18:59:54,734 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 18:59:54,734 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 18:59:54,734 INFO L85 PathProgramCache]: Analyzing trace with hash 1282123871, now seen corresponding path program 1 times [2024-10-12 18:59:54,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 18:59:54,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [909429827] [2024-10-12 18:59:54,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:59:54,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 18:59:54,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-12 18:59:54,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1704781924] [2024-10-12 18:59:54,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:59:54,773 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:59:54,773 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 18:59:54,775 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 18:59:54,776 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-12 18:59:54,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:59:54,825 INFO L255 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-10-12 18:59:54,827 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 18:59:55,353 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 19 proven. 10 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2024-10-12 18:59:55,355 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 18:59:56,726 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 16 proven. 7 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2024-10-12 18:59:56,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 18:59:56,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [909429827] [2024-10-12 18:59:56,726 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-12 18:59:56,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1704781924] [2024-10-12 18:59:56,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1704781924] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 18:59:56,726 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-12 18:59:56,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9] total 20 [2024-10-12 18:59:56,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363850302] [2024-10-12 18:59:56,727 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-12 18:59:56,727 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-10-12 18:59:56,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 18:59:56,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-10-12 18:59:56,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=307, Unknown=0, NotChecked=0, Total=380 [2024-10-12 18:59:56,729 INFO L87 Difference]: Start difference. First operand 62 states and 77 transitions. Second operand has 20 states, 20 states have (on average 1.75) internal successors, (35), 17 states have internal predecessors, (35), 10 states have call successors, (23), 3 states have call predecessors, (23), 2 states have return successors, (22), 9 states have call predecessors, (22), 8 states have call successors, (22) [2024-10-12 18:59:57,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 18:59:57,961 INFO L93 Difference]: Finished difference Result 148 states and 204 transitions. [2024-10-12 18:59:57,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-10-12 18:59:57,961 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.75) internal successors, (35), 17 states have internal predecessors, (35), 10 states have call successors, (23), 3 states have call predecessors, (23), 2 states have return successors, (22), 9 states have call predecessors, (22), 8 states have call successors, (22) Word has length 70 [2024-10-12 18:59:57,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 18:59:57,963 INFO L225 Difference]: With dead ends: 148 [2024-10-12 18:59:57,963 INFO L226 Difference]: Without dead ends: 125 [2024-10-12 18:59:57,964 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=164, Invalid=592, Unknown=0, NotChecked=0, Total=756 [2024-10-12 18:59:57,964 INFO L432 NwaCegarLoop]: 26 mSDtfsCounter, 68 mSDsluCounter, 238 mSDsCounter, 0 mSdLazyCounter, 339 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 264 SdHoareTripleChecker+Invalid, 426 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 339 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-12 18:59:57,964 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 264 Invalid, 426 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 339 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-12 18:59:57,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2024-10-12 18:59:57,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 101. [2024-10-12 18:59:57,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 60 states have (on average 1.1833333333333333) internal successors, (71), 64 states have internal predecessors, (71), 29 states have call successors, (29), 11 states have call predecessors, (29), 11 states have return successors, (28), 25 states have call predecessors, (28), 28 states have call successors, (28) [2024-10-12 18:59:57,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 128 transitions. [2024-10-12 18:59:57,984 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 128 transitions. Word has length 70 [2024-10-12 18:59:57,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 18:59:57,985 INFO L471 AbstractCegarLoop]: Abstraction has 101 states and 128 transitions. [2024-10-12 18:59:57,985 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 1.75) internal successors, (35), 17 states have internal predecessors, (35), 10 states have call successors, (23), 3 states have call predecessors, (23), 2 states have return successors, (22), 9 states have call predecessors, (22), 8 states have call successors, (22) [2024-10-12 18:59:57,985 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 128 transitions. [2024-10-12 18:59:57,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2024-10-12 18:59:57,986 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 18:59:57,986 INFO L215 NwaCegarLoop]: trace histogram [11, 10, 10, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 18:59:58,000 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-12 18:59:58,186 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:59:58,187 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 18:59:58,187 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 18:59:58,188 INFO L85 PathProgramCache]: Analyzing trace with hash 1411586487, now seen corresponding path program 1 times [2024-10-12 18:59:58,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 18:59:58,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313212820] [2024-10-12 18:59:58,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:59:58,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 18:59:58,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-12 18:59:58,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [297811338] [2024-10-12 18:59:58,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:59:58,210 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:59:58,212 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 18:59:58,213 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 18:59:58,214 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-12 18:59:58,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:59:58,257 INFO L255 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-10-12 18:59:58,259 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 18:59:58,592 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 26 proven. 9 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked. [2024-10-12 18:59:58,592 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 18:59:59,187 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 20 proven. 9 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2024-10-12 18:59:59,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 18:59:59,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [313212820] [2024-10-12 18:59:59,188 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-12 18:59:59,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [297811338] [2024-10-12 18:59:59,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [297811338] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 18:59:59,188 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-12 18:59:59,188 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9] total 20 [2024-10-12 18:59:59,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133388533] [2024-10-12 18:59:59,188 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-12 18:59:59,189 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-10-12 18:59:59,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 18:59:59,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-10-12 18:59:59,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=311, Unknown=0, NotChecked=0, Total=380 [2024-10-12 18:59:59,189 INFO L87 Difference]: Start difference. First operand 101 states and 128 transitions. Second operand has 20 states, 19 states have (on average 1.894736842105263) internal successors, (36), 17 states have internal predecessors, (36), 11 states have call successors, (25), 3 states have call predecessors, (25), 2 states have return successors, (24), 10 states have call predecessors, (24), 9 states have call successors, (24) [2024-10-12 18:59:59,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 18:59:59,559 INFO L93 Difference]: Finished difference Result 141 states and 176 transitions. [2024-10-12 18:59:59,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-12 18:59:59,559 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 1.894736842105263) internal successors, (36), 17 states have internal predecessors, (36), 11 states have call successors, (25), 3 states have call predecessors, (25), 2 states have return successors, (24), 10 states have call predecessors, (24), 9 states have call successors, (24) Word has length 81 [2024-10-12 18:59:59,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 18:59:59,560 INFO L225 Difference]: With dead ends: 141 [2024-10-12 18:59:59,560 INFO L226 Difference]: Without dead ends: 107 [2024-10-12 18:59:59,561 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=138, Invalid=618, Unknown=0, NotChecked=0, Total=756 [2024-10-12 18:59:59,561 INFO L432 NwaCegarLoop]: 34 mSDtfsCounter, 26 mSDsluCounter, 357 mSDsCounter, 0 mSdLazyCounter, 316 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 391 SdHoareTripleChecker+Invalid, 345 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 316 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-12 18:59:59,561 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 391 Invalid, 345 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 316 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-12 18:59:59,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2024-10-12 18:59:59,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 93. [2024-10-12 18:59:59,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 56 states have (on average 1.1607142857142858) internal successors, (65), 58 states have internal predecessors, (65), 25 states have call successors, (25), 11 states have call predecessors, (25), 11 states have return successors, (24), 23 states have call predecessors, (24), 24 states have call successors, (24) [2024-10-12 18:59:59,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 114 transitions. [2024-10-12 18:59:59,577 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 114 transitions. Word has length 81 [2024-10-12 18:59:59,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 18:59:59,578 INFO L471 AbstractCegarLoop]: Abstraction has 93 states and 114 transitions. [2024-10-12 18:59:59,578 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 1.894736842105263) internal successors, (36), 17 states have internal predecessors, (36), 11 states have call successors, (25), 3 states have call predecessors, (25), 2 states have return successors, (24), 10 states have call predecessors, (24), 9 states have call successors, (24) [2024-10-12 18:59:59,578 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 114 transitions. [2024-10-12 18:59:59,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2024-10-12 18:59:59,579 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 18:59:59,579 INFO L215 NwaCegarLoop]: trace histogram [11, 10, 10, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 18:59:59,591 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-10-12 18:59:59,782 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:59:59,783 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 18:59:59,783 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 18:59:59,784 INFO L85 PathProgramCache]: Analyzing trace with hash -302279341, now seen corresponding path program 2 times [2024-10-12 18:59:59,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 18:59:59,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369890050] [2024-10-12 18:59:59,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:59:59,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 18:59:59,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:59:59,926 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 18:59:59,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:59:59,928 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-12 18:59:59,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:59:59,930 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-12 18:59:59,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:59:59,932 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-10-12 18:59:59,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:59:59,938 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-10-12 18:59:59,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:59:59,940 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-10-12 18:59:59,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:59:59,945 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-10-12 18:59:59,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:59:59,947 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-10-12 18:59:59,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:59:59,950 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-10-12 18:59:59,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:59:59,953 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-10-12 18:59:59,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:59:59,955 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-10-12 18:59:59,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:59:59,959 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-10-12 18:59:59,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:59:59,964 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-10-12 18:59:59,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:59:59,967 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 25 proven. 9 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2024-10-12 18:59:59,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 18:59:59,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369890050] [2024-10-12 18:59:59,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [369890050] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 18:59:59,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1852027579] [2024-10-12 18:59:59,968 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-12 18:59:59,968 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:59:59,968 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 18:59:59,970 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 18:59:59,971 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-12 19:00:00,015 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-12 19:00:00,015 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-12 19:00:00,016 INFO L255 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-12 19:00:00,018 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 19:00:00,048 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 25 proven. 9 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2024-10-12 19:00:00,048 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 19:00:00,121 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 25 proven. 9 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2024-10-12 19:00:00,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1852027579] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 19:00:00,121 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 19:00:00,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2024-10-12 19:00:00,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168019674] [2024-10-12 19:00:00,122 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 19:00:00,122 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-12 19:00:00,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 19:00:00,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-12 19:00:00,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-12 19:00:00,123 INFO L87 Difference]: Start difference. First operand 93 states and 114 transitions. Second operand has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 5 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 4 states have call predecessors, (18), 4 states have call successors, (18) [2024-10-12 19:00:00,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 19:00:00,165 INFO L93 Difference]: Finished difference Result 120 states and 151 transitions. [2024-10-12 19:00:00,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 19:00:00,166 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 5 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 4 states have call predecessors, (18), 4 states have call successors, (18) Word has length 83 [2024-10-12 19:00:00,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 19:00:00,167 INFO L225 Difference]: With dead ends: 120 [2024-10-12 19:00:00,167 INFO L226 Difference]: Without dead ends: 98 [2024-10-12 19:00:00,167 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 192 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-12 19:00:00,168 INFO L432 NwaCegarLoop]: 45 mSDtfsCounter, 0 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-12 19:00:00,168 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 110 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 19:00:00,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2024-10-12 19:00:00,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2024-10-12 19:00:00,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 59 states have (on average 1.152542372881356) internal successors, (68), 61 states have internal predecessors, (68), 27 states have call successors, (27), 11 states have call predecessors, (27), 11 states have return successors, (26), 25 states have call predecessors, (26), 26 states have call successors, (26) [2024-10-12 19:00:00,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 121 transitions. [2024-10-12 19:00:00,184 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 121 transitions. Word has length 83 [2024-10-12 19:00:00,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 19:00:00,185 INFO L471 AbstractCegarLoop]: Abstraction has 98 states and 121 transitions. [2024-10-12 19:00:00,185 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 5 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 4 states have call predecessors, (18), 4 states have call successors, (18) [2024-10-12 19:00:00,185 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 121 transitions. [2024-10-12 19:00:00,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2024-10-12 19:00:00,186 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 19:00:00,186 INFO L215 NwaCegarLoop]: trace histogram [12, 11, 11, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 19:00:00,198 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-10-12 19:00:00,390 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 19:00:00,391 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 19:00:00,391 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 19:00:00,391 INFO L85 PathProgramCache]: Analyzing trace with hash -1047816948, now seen corresponding path program 1 times [2024-10-12 19:00:00,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 19:00:00,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [969753483] [2024-10-12 19:00:00,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 19:00:00,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 19:00:00,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:00:00,573 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 19:00:00,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:00:00,575 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-12 19:00:00,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:00:00,578 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-12 19:00:00,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:00:00,580 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-10-12 19:00:00,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:00:00,582 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-10-12 19:00:00,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:00:00,585 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-10-12 19:00:00,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:00:00,590 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-10-12 19:00:00,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:00:00,593 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-10-12 19:00:00,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:00:00,597 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-10-12 19:00:00,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:00:00,603 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-10-12 19:00:00,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:00:00,607 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-10-12 19:00:00,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:00:00,612 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-10-12 19:00:00,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:00:00,615 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-10-12 19:00:00,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:00:00,618 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-10-12 19:00:00,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:00:00,622 INFO L134 CoverageAnalysis]: Checked inductivity of 263 backedges. 22 proven. 9 refuted. 0 times theorem prover too weak. 232 trivial. 0 not checked. [2024-10-12 19:00:00,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 19:00:00,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [969753483] [2024-10-12 19:00:00,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [969753483] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 19:00:00,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1494090964] [2024-10-12 19:00:00,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 19:00:00,623 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 19:00:00,623 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 19:00:00,624 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 19:00:00,625 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-12 19:00:00,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:00:00,668 INFO L255 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-10-12 19:00:00,670 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 19:00:00,899 INFO L134 CoverageAnalysis]: Checked inductivity of 263 backedges. 28 proven. 9 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2024-10-12 19:00:00,900 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 19:00:01,179 INFO L134 CoverageAnalysis]: Checked inductivity of 263 backedges. 22 proven. 9 refuted. 0 times theorem prover too weak. 232 trivial. 0 not checked. [2024-10-12 19:00:01,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1494090964] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 19:00:01,179 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 19:00:01,180 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 11, 8] total 18 [2024-10-12 19:00:01,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141841388] [2024-10-12 19:00:01,181 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 19:00:01,182 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-10-12 19:00:01,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 19:00:01,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-10-12 19:00:01,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=252, Unknown=0, NotChecked=0, Total=306 [2024-10-12 19:00:01,183 INFO L87 Difference]: Start difference. First operand 98 states and 121 transitions. Second operand has 18 states, 18 states have (on average 2.3333333333333335) internal successors, (42), 15 states have internal predecessors, (42), 10 states have call successors, (33), 3 states have call predecessors, (33), 2 states have return successors, (32), 11 states have call predecessors, (32), 10 states have call successors, (32) [2024-10-12 19:00:01,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 19:00:01,407 INFO L93 Difference]: Finished difference Result 113 states and 141 transitions. [2024-10-12 19:00:01,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-12 19:00:01,408 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.3333333333333335) internal successors, (42), 15 states have internal predecessors, (42), 10 states have call successors, (33), 3 states have call predecessors, (33), 2 states have return successors, (32), 11 states have call predecessors, (32), 10 states have call successors, (32) Word has length 86 [2024-10-12 19:00:01,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 19:00:01,409 INFO L225 Difference]: With dead ends: 113 [2024-10-12 19:00:01,409 INFO L226 Difference]: Without dead ends: 96 [2024-10-12 19:00:01,410 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 189 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=85, Invalid=377, Unknown=0, NotChecked=0, Total=462 [2024-10-12 19:00:01,411 INFO L432 NwaCegarLoop]: 41 mSDtfsCounter, 27 mSDsluCounter, 332 mSDsCounter, 0 mSdLazyCounter, 204 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 373 SdHoareTripleChecker+Invalid, 222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 19:00:01,411 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 373 Invalid, 222 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 204 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 19:00:01,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2024-10-12 19:00:01,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 89. [2024-10-12 19:00:01,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 54 states have (on average 1.1481481481481481) internal successors, (62), 56 states have internal predecessors, (62), 23 states have call successors, (23), 11 states have call predecessors, (23), 11 states have return successors, (22), 21 states have call predecessors, (22), 22 states have call successors, (22) [2024-10-12 19:00:01,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 107 transitions. [2024-10-12 19:00:01,436 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 107 transitions. Word has length 86 [2024-10-12 19:00:01,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 19:00:01,436 INFO L471 AbstractCegarLoop]: Abstraction has 89 states and 107 transitions. [2024-10-12 19:00:01,436 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.3333333333333335) internal successors, (42), 15 states have internal predecessors, (42), 10 states have call successors, (33), 3 states have call predecessors, (33), 2 states have return successors, (32), 11 states have call predecessors, (32), 10 states have call successors, (32) [2024-10-12 19:00:01,436 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 107 transitions. [2024-10-12 19:00:01,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2024-10-12 19:00:01,437 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 19:00:01,438 INFO L215 NwaCegarLoop]: trace histogram [13, 12, 12, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 19:00:01,451 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-10-12 19:00:01,641 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 19:00:01,642 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 19:00:01,642 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 19:00:01,642 INFO L85 PathProgramCache]: Analyzing trace with hash -1271237959, now seen corresponding path program 1 times [2024-10-12 19:00:01,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 19:00:01,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440279521] [2024-10-12 19:00:01,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 19:00:01,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 19:00:01,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:00:01,706 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 19:00:01,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:00:01,709 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-12 19:00:01,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:00:01,710 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-12 19:00:01,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:00:01,711 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-10-12 19:00:01,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:00:01,713 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-10-12 19:00:01,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:00:01,715 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-10-12 19:00:01,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:00:01,717 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-10-12 19:00:01,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:00:01,719 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-10-12 19:00:01,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:00:01,721 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-10-12 19:00:01,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:00:01,723 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-10-12 19:00:01,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:00:01,725 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-10-12 19:00:01,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:00:01,727 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-10-12 19:00:01,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:00:01,730 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-10-12 19:00:01,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:00:01,732 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-10-12 19:00:01,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:00:01,734 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2024-10-12 19:00:01,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:00:01,736 INFO L134 CoverageAnalysis]: Checked inductivity of 315 backedges. 29 proven. 10 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2024-10-12 19:00:01,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 19:00:01,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [440279521] [2024-10-12 19:00:01,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [440279521] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 19:00:01,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1003856938] [2024-10-12 19:00:01,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 19:00:01,737 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 19:00:01,737 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 19:00:01,738 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 19:00:01,739 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-12 19:00:01,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:00:01,780 INFO L255 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-12 19:00:01,781 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 19:00:01,804 INFO L134 CoverageAnalysis]: Checked inductivity of 315 backedges. 81 proven. 0 refuted. 0 times theorem prover too weak. 234 trivial. 0 not checked. [2024-10-12 19:00:01,804 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 19:00:01,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1003856938] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 19:00:01,804 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 19:00:01,804 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 6 [2024-10-12 19:00:01,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448497156] [2024-10-12 19:00:01,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 19:00:01,805 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-12 19:00:01,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 19:00:01,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-12 19:00:01,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-10-12 19:00:01,806 INFO L87 Difference]: Start difference. First operand 89 states and 107 transitions. Second operand has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 5 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 5 states have call predecessors, (15), 5 states have call successors, (15) [2024-10-12 19:00:01,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 19:00:01,851 INFO L93 Difference]: Finished difference Result 96 states and 113 transitions. [2024-10-12 19:00:01,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-12 19:00:01,852 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 5 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 5 states have call predecessors, (15), 5 states have call successors, (15) Word has length 90 [2024-10-12 19:00:01,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 19:00:01,852 INFO L225 Difference]: With dead ends: 96 [2024-10-12 19:00:01,853 INFO L226 Difference]: Without dead ends: 84 [2024-10-12 19:00:01,853 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-10-12 19:00:01,853 INFO L432 NwaCegarLoop]: 47 mSDtfsCounter, 7 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-12 19:00:01,853 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 83 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 19:00:01,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2024-10-12 19:00:01,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2024-10-12 19:00:01,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 51 states have (on average 1.1176470588235294) internal successors, (57), 52 states have internal predecessors, (57), 22 states have call successors, (22), 10 states have call predecessors, (22), 10 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2024-10-12 19:00:01,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 100 transitions. [2024-10-12 19:00:01,866 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 100 transitions. Word has length 90 [2024-10-12 19:00:01,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 19:00:01,866 INFO L471 AbstractCegarLoop]: Abstraction has 84 states and 100 transitions. [2024-10-12 19:00:01,866 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 5 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 5 states have call predecessors, (15), 5 states have call successors, (15) [2024-10-12 19:00:01,866 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 100 transitions. [2024-10-12 19:00:01,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2024-10-12 19:00:01,867 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 19:00:01,867 INFO L215 NwaCegarLoop]: trace histogram [14, 13, 13, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 19:00:01,880 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-10-12 19:00:02,067 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-10-12 19:00:02,068 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 19:00:02,068 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 19:00:02,068 INFO L85 PathProgramCache]: Analyzing trace with hash 1209712204, now seen corresponding path program 3 times [2024-10-12 19:00:02,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 19:00:02,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1896275596] [2024-10-12 19:00:02,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 19:00:02,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 19:00:02,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:00:02,390 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 19:00:02,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:00:02,414 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-12 19:00:02,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:00:02,416 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-12 19:00:02,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:00:02,418 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-10-12 19:00:02,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:00:02,420 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-10-12 19:00:02,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:00:02,422 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-10-12 19:00:02,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:00:02,424 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-10-12 19:00:02,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:00:02,426 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-10-12 19:00:02,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:00:02,428 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-10-12 19:00:02,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:00:02,431 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-10-12 19:00:02,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:00:02,433 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-10-12 19:00:02,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:00:02,436 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-10-12 19:00:02,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:00:02,445 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-10-12 19:00:02,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:00:02,450 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-10-12 19:00:02,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:00:02,454 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2024-10-12 19:00:02,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:00:02,458 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2024-10-12 19:00:02,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:00:02,462 INFO L134 CoverageAnalysis]: Checked inductivity of 374 backedges. 45 proven. 11 refuted. 0 times theorem prover too weak. 318 trivial. 0 not checked. [2024-10-12 19:00:02,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 19:00:02,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1896275596] [2024-10-12 19:00:02,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1896275596] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 19:00:02,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1825814671] [2024-10-12 19:00:02,463 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-12 19:00:02,463 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 19:00:02,463 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 19:00:02,464 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 19:00:02,466 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-10-12 19:00:02,509 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-10-12 19:00:02,509 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-12 19:00:02,510 INFO L255 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-10-12 19:00:02,512 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 19:00:02,894 INFO L134 CoverageAnalysis]: Checked inductivity of 374 backedges. 33 proven. 23 refuted. 0 times theorem prover too weak. 318 trivial. 0 not checked. [2024-10-12 19:00:02,895 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 19:00:03,475 INFO L134 CoverageAnalysis]: Checked inductivity of 374 backedges. 33 proven. 23 refuted. 0 times theorem prover too weak. 318 trivial. 0 not checked. [2024-10-12 19:00:03,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1825814671] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 19:00:03,476 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 19:00:03,476 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 24 [2024-10-12 19:00:03,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072365343] [2024-10-12 19:00:03,476 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 19:00:03,476 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-10-12 19:00:03,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 19:00:03,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-10-12 19:00:03,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=465, Unknown=0, NotChecked=0, Total=552 [2024-10-12 19:00:03,477 INFO L87 Difference]: Start difference. First operand 84 states and 100 transitions. Second operand has 24 states, 24 states have (on average 2.2916666666666665) internal successors, (55), 22 states have internal predecessors, (55), 16 states have call successors, (43), 2 states have call predecessors, (43), 2 states have return successors, (44), 16 states have call predecessors, (44), 15 states have call successors, (44) [2024-10-12 19:00:04,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 19:00:04,073 INFO L93 Difference]: Finished difference Result 209 states and 289 transitions. [2024-10-12 19:00:04,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-10-12 19:00:04,073 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.2916666666666665) internal successors, (55), 22 states have internal predecessors, (55), 16 states have call successors, (43), 2 states have call predecessors, (43), 2 states have return successors, (44), 16 states have call predecessors, (44), 15 states have call successors, (44) Word has length 100 [2024-10-12 19:00:04,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 19:00:04,075 INFO L225 Difference]: With dead ends: 209 [2024-10-12 19:00:04,075 INFO L226 Difference]: Without dead ends: 157 [2024-10-12 19:00:04,076 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 217 SyntacticMatches, 2 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 218 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=238, Invalid=952, Unknown=0, NotChecked=0, Total=1190 [2024-10-12 19:00:04,077 INFO L432 NwaCegarLoop]: 59 mSDtfsCounter, 99 mSDsluCounter, 537 mSDsCounter, 0 mSdLazyCounter, 295 mSolverCounterSat, 110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 596 SdHoareTripleChecker+Invalid, 405 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 110 IncrementalHoareTripleChecker+Valid, 295 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-12 19:00:04,078 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 596 Invalid, 405 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [110 Valid, 295 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-12 19:00:04,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2024-10-12 19:00:04,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 110. [2024-10-12 19:00:04,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 67 states have (on average 1.208955223880597) internal successors, (81), 68 states have internal predecessors, (81), 32 states have call successors, (32), 10 states have call predecessors, (32), 10 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2024-10-12 19:00:04,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 144 transitions. [2024-10-12 19:00:04,106 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 144 transitions. Word has length 100 [2024-10-12 19:00:04,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 19:00:04,107 INFO L471 AbstractCegarLoop]: Abstraction has 110 states and 144 transitions. [2024-10-12 19:00:04,107 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.2916666666666665) internal successors, (55), 22 states have internal predecessors, (55), 16 states have call successors, (43), 2 states have call predecessors, (43), 2 states have return successors, (44), 16 states have call predecessors, (44), 15 states have call successors, (44) [2024-10-12 19:00:04,107 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 144 transitions. [2024-10-12 19:00:04,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2024-10-12 19:00:04,108 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 19:00:04,108 INFO L215 NwaCegarLoop]: trace histogram [15, 14, 14, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 19:00:04,120 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-10-12 19:00:04,312 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-10-12 19:00:04,313 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 19:00:04,313 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 19:00:04,313 INFO L85 PathProgramCache]: Analyzing trace with hash -1299465319, now seen corresponding path program 1 times [2024-10-12 19:00:04,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 19:00:04,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2016321415] [2024-10-12 19:00:04,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 19:00:04,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 19:00:04,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-12 19:00:04,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1818522068] [2024-10-12 19:00:04,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 19:00:04,340 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 19:00:04,340 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 19:00:04,342 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 19:00:04,343 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-10-12 19:00:04,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:00:04,391 INFO L255 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-10-12 19:00:04,393 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 19:00:04,859 INFO L134 CoverageAnalysis]: Checked inductivity of 430 backedges. 27 proven. 72 refuted. 0 times theorem prover too weak. 331 trivial. 0 not checked. [2024-10-12 19:00:04,859 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 19:00:06,655 INFO L134 CoverageAnalysis]: Checked inductivity of 430 backedges. 27 proven. 72 refuted. 0 times theorem prover too weak. 331 trivial. 0 not checked. [2024-10-12 19:00:06,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 19:00:06,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2016321415] [2024-10-12 19:00:06,656 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-12 19:00:06,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1818522068] [2024-10-12 19:00:06,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1818522068] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 19:00:06,656 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-12 19:00:06,656 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 15] total 29 [2024-10-12 19:00:06,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324538956] [2024-10-12 19:00:06,656 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-12 19:00:06,657 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-10-12 19:00:06,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 19:00:06,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-10-12 19:00:06,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=704, Unknown=0, NotChecked=0, Total=812 [2024-10-12 19:00:06,658 INFO L87 Difference]: Start difference. First operand 110 states and 144 transitions. Second operand has 29 states, 29 states have (on average 1.793103448275862) internal successors, (52), 26 states have internal predecessors, (52), 16 states have call successors, (35), 3 states have call predecessors, (35), 3 states have return successors, (34), 13 states have call predecessors, (34), 16 states have call successors, (34) [2024-10-12 19:00:07,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 19:00:07,399 INFO L93 Difference]: Finished difference Result 134 states and 165 transitions. [2024-10-12 19:00:07,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-10-12 19:00:07,399 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 1.793103448275862) internal successors, (52), 26 states have internal predecessors, (52), 16 states have call successors, (35), 3 states have call predecessors, (35), 3 states have return successors, (34), 13 states have call predecessors, (34), 16 states have call successors, (34) Word has length 105 [2024-10-12 19:00:07,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 19:00:07,400 INFO L225 Difference]: With dead ends: 134 [2024-10-12 19:00:07,400 INFO L226 Difference]: Without dead ends: 91 [2024-10-12 19:00:07,401 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 180 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 166 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=219, Invalid=1187, Unknown=0, NotChecked=0, Total=1406 [2024-10-12 19:00:07,401 INFO L432 NwaCegarLoop]: 31 mSDtfsCounter, 45 mSDsluCounter, 388 mSDsCounter, 0 mSdLazyCounter, 448 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 419 SdHoareTripleChecker+Invalid, 528 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 448 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-12 19:00:07,401 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 419 Invalid, 528 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 448 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-12 19:00:07,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2024-10-12 19:00:07,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2024-10-12 19:00:07,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 57 states have (on average 1.0175438596491229) internal successors, (58), 58 states have internal predecessors, (58), 20 states have call successors, (20), 13 states have call predecessors, (20), 13 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2024-10-12 19:00:07,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 97 transitions. [2024-10-12 19:00:07,413 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 97 transitions. Word has length 105 [2024-10-12 19:00:07,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 19:00:07,414 INFO L471 AbstractCegarLoop]: Abstraction has 91 states and 97 transitions. [2024-10-12 19:00:07,414 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 1.793103448275862) internal successors, (52), 26 states have internal predecessors, (52), 16 states have call successors, (35), 3 states have call predecessors, (35), 3 states have return successors, (34), 13 states have call predecessors, (34), 16 states have call successors, (34) [2024-10-12 19:00:07,414 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 97 transitions. [2024-10-12 19:00:07,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2024-10-12 19:00:07,415 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 19:00:07,415 INFO L215 NwaCegarLoop]: trace histogram [16, 15, 15, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 19:00:07,427 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-10-12 19:00:07,615 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-10-12 19:00:07,615 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 19:00:07,616 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 19:00:07,616 INFO L85 PathProgramCache]: Analyzing trace with hash -663832148, now seen corresponding path program 1 times [2024-10-12 19:00:07,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 19:00:07,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1896455395] [2024-10-12 19:00:07,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 19:00:07,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 19:00:07,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-12 19:00:07,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [392925191] [2024-10-12 19:00:07,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 19:00:07,637 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 19:00:07,637 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 19:00:07,638 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 19:00:07,640 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-10-12 19:00:07,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:00:07,699 INFO L255 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 49 conjuncts are in the unsatisfiable core [2024-10-12 19:00:07,701 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 19:00:08,450 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 64 proven. 72 refuted. 0 times theorem prover too weak. 354 trivial. 0 not checked. [2024-10-12 19:00:08,451 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 19:00:09,336 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 19:00:09,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1896455395] [2024-10-12 19:00:09,337 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-12 19:00:09,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [392925191] [2024-10-12 19:00:09,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [392925191] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 19:00:09,337 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-10-12 19:00:09,337 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2024-10-12 19:00:09,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068792788] [2024-10-12 19:00:09,337 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-10-12 19:00:09,337 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-10-12 19:00:09,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 19:00:09,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-10-12 19:00:09,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=475, Unknown=0, NotChecked=0, Total=600 [2024-10-12 19:00:09,338 INFO L87 Difference]: Start difference. First operand 91 states and 97 transitions. Second operand has 16 states, 15 states have (on average 1.9333333333333333) internal successors, (29), 14 states have internal predecessors, (29), 9 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 7 states have call predecessors, (18), 8 states have call successors, (18) [2024-10-12 19:00:09,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 19:00:09,717 INFO L93 Difference]: Finished difference Result 97 states and 102 transitions. [2024-10-12 19:00:09,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-10-12 19:00:09,717 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 1.9333333333333333) internal successors, (29), 14 states have internal predecessors, (29), 9 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 7 states have call predecessors, (18), 8 states have call successors, (18) Word has length 111 [2024-10-12 19:00:09,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 19:00:09,718 INFO L225 Difference]: With dead ends: 97 [2024-10-12 19:00:09,718 INFO L226 Difference]: Without dead ends: 93 [2024-10-12 19:00:09,718 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=146, Invalid=556, Unknown=0, NotChecked=0, Total=702 [2024-10-12 19:00:09,718 INFO L432 NwaCegarLoop]: 36 mSDtfsCounter, 3 mSDsluCounter, 361 mSDsCounter, 0 mSdLazyCounter, 375 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 397 SdHoareTripleChecker+Invalid, 389 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 375 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-12 19:00:09,718 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 397 Invalid, 389 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 375 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-12 19:00:09,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2024-10-12 19:00:09,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2024-10-12 19:00:09,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 59 states have (on average 1.0) internal successors, (59), 59 states have internal predecessors, (59), 20 states have call successors, (20), 14 states have call predecessors, (20), 13 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2024-10-12 19:00:09,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 98 transitions. [2024-10-12 19:00:09,732 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 98 transitions. Word has length 111 [2024-10-12 19:00:09,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 19:00:09,732 INFO L471 AbstractCegarLoop]: Abstraction has 93 states and 98 transitions. [2024-10-12 19:00:09,732 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 1.9333333333333333) internal successors, (29), 14 states have internal predecessors, (29), 9 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 7 states have call predecessors, (18), 8 states have call successors, (18) [2024-10-12 19:00:09,732 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 98 transitions. [2024-10-12 19:00:09,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2024-10-12 19:00:09,733 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 19:00:09,733 INFO L215 NwaCegarLoop]: trace histogram [17, 16, 16, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 19:00:09,745 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-10-12 19:00:09,937 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-10-12 19:00:09,938 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 19:00:09,938 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 19:00:09,938 INFO L85 PathProgramCache]: Analyzing trace with hash 683583031, now seen corresponding path program 1 times [2024-10-12 19:00:09,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 19:00:09,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023272170] [2024-10-12 19:00:09,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 19:00:09,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 19:00:09,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:00:10,218 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 19:00:10,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:00:10,220 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-12 19:00:10,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:00:10,221 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-12 19:00:10,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:00:10,222 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-10-12 19:00:10,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:00:10,224 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-10-12 19:00:10,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:00:10,226 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-10-12 19:00:10,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:00:10,228 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-10-12 19:00:10,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:00:10,229 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-10-12 19:00:10,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:00:10,231 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-10-12 19:00:10,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:00:10,235 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-10-12 19:00:10,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:00:10,238 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-10-12 19:00:10,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:00:10,240 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-10-12 19:00:10,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:00:10,242 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-10-12 19:00:10,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:00:10,245 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-10-12 19:00:10,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:00:10,247 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2024-10-12 19:00:10,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:00:10,250 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2024-10-12 19:00:10,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:00:10,252 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2024-10-12 19:00:10,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:00:10,254 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2024-10-12 19:00:10,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:00:10,256 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2024-10-12 19:00:10,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:00:10,258 INFO L134 CoverageAnalysis]: Checked inductivity of 552 backedges. 32 proven. 28 refuted. 0 times theorem prover too weak. 492 trivial. 0 not checked. [2024-10-12 19:00:10,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 19:00:10,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023272170] [2024-10-12 19:00:10,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2023272170] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 19:00:10,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1140976928] [2024-10-12 19:00:10,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 19:00:10,259 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 19:00:10,259 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 19:00:10,260 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 19:00:10,261 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-10-12 19:00:10,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:00:10,312 INFO L255 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-10-12 19:00:10,313 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 19:00:10,638 INFO L134 CoverageAnalysis]: Checked inductivity of 552 backedges. 31 proven. 74 refuted. 0 times theorem prover too weak. 447 trivial. 0 not checked. [2024-10-12 19:00:10,638 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 19:00:11,332 INFO L134 CoverageAnalysis]: Checked inductivity of 552 backedges. 31 proven. 74 refuted. 0 times theorem prover too weak. 447 trivial. 0 not checked. [2024-10-12 19:00:11,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1140976928] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 19:00:11,333 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 19:00:11,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 13, 12] total 26 [2024-10-12 19:00:11,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053786493] [2024-10-12 19:00:11,333 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 19:00:11,333 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-10-12 19:00:11,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 19:00:11,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-10-12 19:00:11,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=559, Unknown=0, NotChecked=0, Total=650 [2024-10-12 19:00:11,334 INFO L87 Difference]: Start difference. First operand 93 states and 98 transitions. Second operand has 26 states, 26 states have (on average 2.3076923076923075) internal successors, (60), 23 states have internal predecessors, (60), 19 states have call successors, (50), 3 states have call predecessors, (50), 2 states have return successors, (48), 17 states have call predecessors, (48), 19 states have call successors, (48) [2024-10-12 19:00:11,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 19:00:11,633 INFO L93 Difference]: Finished difference Result 93 states and 98 transitions. [2024-10-12 19:00:11,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-12 19:00:11,634 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.3076923076923075) internal successors, (60), 23 states have internal predecessors, (60), 19 states have call successors, (50), 3 states have call predecessors, (50), 2 states have return successors, (48), 17 states have call predecessors, (48), 19 states have call successors, (48) Word has length 116 [2024-10-12 19:00:11,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 19:00:11,634 INFO L225 Difference]: With dead ends: 93 [2024-10-12 19:00:11,634 INFO L226 Difference]: Without dead ends: 0 [2024-10-12 19:00:11,635 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 284 GetRequests, 254 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 218 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=146, Invalid=846, Unknown=0, NotChecked=0, Total=992 [2024-10-12 19:00:11,635 INFO L432 NwaCegarLoop]: 36 mSDtfsCounter, 14 mSDsluCounter, 242 mSDsCounter, 0 mSdLazyCounter, 318 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 278 SdHoareTripleChecker+Invalid, 345 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 318 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-12 19:00:11,635 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 278 Invalid, 345 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 318 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-12 19:00:11,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-10-12 19:00:11,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-10-12 19:00:11,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 19:00:11,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-10-12 19:00:11,636 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 116 [2024-10-12 19:00:11,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 19:00:11,636 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-10-12 19:00:11,636 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 2.3076923076923075) internal successors, (60), 23 states have internal predecessors, (60), 19 states have call successors, (50), 3 states have call predecessors, (50), 2 states have return successors, (48), 17 states have call predecessors, (48), 19 states have call successors, (48) [2024-10-12 19:00:11,636 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-10-12 19:00:11,636 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-10-12 19:00:11,638 INFO L782 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-10-12 19:00:11,651 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-10-12 19:00:11,842 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-10-12 19:00:11,845 INFO L407 BasicCegarLoop]: Path program histogram: [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 19:00:11,847 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-10-12 19:00:13,061 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-10-12 19:00:13,077 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.10 07:00:13 BoogieIcfgContainer [2024-10-12 19:00:13,077 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-10-12 19:00:13,078 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-10-12 19:00:13,078 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-10-12 19:00:13,078 INFO L274 PluginConnector]: Witness Printer initialized [2024-10-12 19:00:13,079 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 06:59:52" (3/4) ... [2024-10-12 19:00:13,080 INFO L139 WitnessPrinter]: Generating witness for correct program [2024-10-12 19:00:13,083 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not [2024-10-12 19:00:13,083 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2024-10-12 19:00:13,085 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2024-10-12 19:00:13,085 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2024-10-12 19:00:13,085 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-10-12 19:00:13,086 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-10-12 19:00:13,142 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-10-12 19:00:13,142 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-10-12 19:00:13,142 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-10-12 19:00:13,143 INFO L158 Benchmark]: Toolchain (without parser) took 21659.70ms. Allocated memory was 130.0MB in the beginning and 276.8MB in the end (delta: 146.8MB). Free memory was 62.5MB in the beginning and 134.5MB in the end (delta: -72.0MB). Peak memory consumption was 77.1MB. Max. memory is 16.1GB. [2024-10-12 19:00:13,143 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 130.0MB. Free memory is still 86.3MB. There was no memory consumed. Max. memory is 16.1GB. [2024-10-12 19:00:13,143 INFO L158 Benchmark]: CACSL2BoogieTranslator took 233.51ms. Allocated memory is still 130.0MB. Free memory was 62.3MB in the beginning and 92.4MB in the end (delta: -30.1MB). Peak memory consumption was 5.4MB. Max. memory is 16.1GB. [2024-10-12 19:00:13,143 INFO L158 Benchmark]: Boogie Procedure Inliner took 24.10ms. Allocated memory is still 130.0MB. Free memory was 92.4MB in the beginning and 90.7MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-12 19:00:13,143 INFO L158 Benchmark]: Boogie Preprocessor took 28.66ms. Allocated memory is still 130.0MB. Free memory was 90.7MB in the beginning and 88.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-12 19:00:13,143 INFO L158 Benchmark]: RCFGBuilder took 281.54ms. Allocated memory is still 130.0MB. Free memory was 88.6MB in the beginning and 76.0MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-10-12 19:00:13,144 INFO L158 Benchmark]: TraceAbstraction took 21020.71ms. Allocated memory was 130.0MB in the beginning and 276.8MB in the end (delta: 146.8MB). Free memory was 75.2MB in the beginning and 139.8MB in the end (delta: -64.6MB). Peak memory consumption was 142.0MB. Max. memory is 16.1GB. [2024-10-12 19:00:13,144 INFO L158 Benchmark]: Witness Printer took 64.54ms. Allocated memory is still 276.8MB. Free memory was 139.8MB in the beginning and 134.5MB in the end (delta: 5.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2024-10-12 19:00:13,145 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 130.0MB. Free memory is still 86.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 233.51ms. Allocated memory is still 130.0MB. Free memory was 62.3MB in the beginning and 92.4MB in the end (delta: -30.1MB). Peak memory consumption was 5.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 24.10ms. Allocated memory is still 130.0MB. Free memory was 92.4MB in the beginning and 90.7MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 28.66ms. Allocated memory is still 130.0MB. Free memory was 90.7MB in the beginning and 88.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 281.54ms. Allocated memory is still 130.0MB. Free memory was 88.6MB in the beginning and 76.0MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 21020.71ms. Allocated memory was 130.0MB in the beginning and 276.8MB in the end (delta: 146.8MB). Free memory was 75.2MB in the beginning and 139.8MB in the end (delta: -64.6MB). Peak memory consumption was 142.0MB. Max. memory is 16.1GB. * Witness Printer took 64.54ms. Allocated memory is still 276.8MB. Free memory was 139.8MB in the beginning and 134.5MB in the end (delta: 5.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 17]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 30 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 19.7s, OverallIterations: 16, TraceHistogramMax: 17, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 4.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 386 SdHoareTripleChecker+Valid, 2.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 335 mSDsluCounter, 3699 SdHoareTripleChecker+Invalid, 2.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 3115 mSDsCounter, 382 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2660 IncrementalHoareTripleChecker+Invalid, 3042 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 382 mSolverCounterUnsat, 584 mSDtfsCounter, 2660 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2012 GetRequests, 1771 SyntacticMatches, 7 SemanticMatches, 234 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1022 ImplicationChecksByTransitivity, 4.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=110occurred in iteration=13, InterpolantAutomatonStates: 154, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 16 MinimizatonAttempts, 110 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 11.5s InterpolantComputationTime, 2060 NumberOfCodeBlocks, 2033 NumberOfCodeBlocksAsserted, 32 NumberOfCheckSat, 2271 ConstructedInterpolants, 0 QuantifiedInterpolants, 14813 SizeOfPredicates, 30 NumberOfNonLiveVariables, 2079 ConjunctsInSsa, 278 ConjunctsInUnsatCore, 30 InterpolantComputations, 7 PerfectInterpolantSequences, 6729/7295 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 46]: Loop Invariant Derived loop invariant: (((((((((((((p == 4) && (r <= 2)) && (q == 0)) && (r == A)) && (((__int128) r + 1) <= d)) && (((d >= 0) ? (d % 2) : ((d % 2) + 2)) == 0)) && (((d >= 0) ? (d / 2) : ((d / 2) - 1)) <= r)) && ((((d >= 0) ? (d / 2) : ((d / 2) - 1)) + A) == ((__int128) ((long long) 2 * B) + r))) || ((((((d == 1) && (p == 1)) && (B == 1)) && (r == 0)) && (2 == q)) && (2 == A))) || (((((((A <= 2) && (2 == p)) && (((long long) 2 * B) == d)) && (q == 0)) && (r == A)) && (((__int128) r + 1) <= d)) && (((d >= 0) ? (d / 2) : ((d / 2) - 1)) <= r))) || ((((((2 == p) && (B == 1)) && (r == 0)) && (2 == q)) && (2 == A)) && (2 == d))) || (((((((((__int128) r + B) == A) && (p == 1)) && (A <= 2)) && (0 <= r)) && (q == 1)) && (((__int128) d + A) == ((__int128) ((long long) 2 * B) + r))) && (((__int128) r + 1) <= d))) || ((((p == 1) && (d == B)) && (q == 0)) && (r == A))) - InvariantResult [Line: 36]: Loop Invariant Derived loop invariant: ((((((((p == 1) && (d == B)) && (r <= 2)) && (q == 0)) && (1 <= d)) && (r == A)) || (((((((2 == p) && (((long long) 2 * B) == d)) && (r <= 2)) && (q == 0)) && (1 <= d)) && (r == A)) && (((d >= 0) ? (d / 2) : ((d / 2) - 1)) <= r))) || ((((((((p == 4) && (r <= 2)) && (q == 0)) && (1 <= d)) && (r == A)) && (((d >= 0) ? (d % 2) : ((d % 2) + 2)) == 0)) && (((d >= 0) ? (d / 2) : ((d / 2) - 1)) <= r)) && ((((d >= 0) ? (d / 2) : ((d / 2) - 1)) + A) == ((__int128) ((long long) 2 * B) + r)))) - ProcedureContractResult [Line: 11]: Procedure Contract for assume_abort_if_not Derived contract for procedure assume_abort_if_not. Ensures: (cond != 0) - ProcedureContractResult [Line: 14]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert. Requires: (cond != 0) Ensures: (cond != 0) RESULT: Ultimate proved your program to be correct! [2024-10-12 19:00:13,184 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE