./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/cohendiv-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/cohendiv-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 95c338a7a91abcfb8302c7314ea1de7bdde280884a10e8d539233a34032b9a5d --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-mul-div-a046e57-m [2024-10-12 18:45:04,632 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-12 18:45:04,711 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-12 18:45:04,717 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-12 18:45:04,718 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-12 18:45:04,739 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-12 18:45:04,740 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-12 18:45:04,740 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-12 18:45:04,741 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-12 18:45:04,741 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-12 18:45:04,742 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-12 18:45:04,742 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-12 18:45:04,743 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-12 18:45:04,743 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-12 18:45:04,744 INFO L153 SettingsManager]: * Use SBE=true [2024-10-12 18:45:04,744 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-12 18:45:04,745 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-12 18:45:04,745 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-12 18:45:04,745 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-12 18:45:04,746 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-12 18:45:04,746 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-12 18:45:04,747 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-12 18:45:04,747 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-12 18:45:04,747 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-12 18:45:04,748 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-12 18:45:04,748 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-12 18:45:04,748 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-12 18:45:04,748 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-12 18:45:04,749 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-12 18:45:04,749 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-12 18:45:04,750 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-12 18:45:04,750 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-12 18:45:04,750 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-12 18:45:04,751 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-12 18:45:04,751 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-12 18:45:04,751 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-12 18:45:04,752 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-12 18:45:04,752 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-12 18:45:04,752 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-12 18:45:04,752 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-12 18:45:04,752 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-12 18:45:04,754 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-12 18:45:04,754 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 95c338a7a91abcfb8302c7314ea1de7bdde280884a10e8d539233a34032b9a5d [2024-10-12 18:45:05,022 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-12 18:45:05,051 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-12 18:45:05,054 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-12 18:45:05,056 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-12 18:45:05,056 INFO L274 PluginConnector]: CDTParser initialized [2024-10-12 18:45:05,057 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_valuebound2.c [2024-10-12 18:45:06,504 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-12 18:45:06,688 INFO L384 CDTParser]: Found 1 translation units. [2024-10-12 18:45:06,690 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_valuebound2.c [2024-10-12 18:45:06,698 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/72ebc76d3/5d5c0fc0805d48af9c3057afb7709032/FLAG52bb2b249 [2024-10-12 18:45:07,072 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/72ebc76d3/5d5c0fc0805d48af9c3057afb7709032 [2024-10-12 18:45:07,076 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-12 18:45:07,078 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-12 18:45:07,081 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-12 18:45:07,081 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-12 18:45:07,087 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-12 18:45:07,089 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 06:45:07" (1/1) ... [2024-10-12 18:45:07,090 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@125c832d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:45:07, skipping insertion in model container [2024-10-12 18:45:07,090 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 06:45:07" (1/1) ... [2024-10-12 18:45:07,113 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-12 18:45:07,278 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/cohendiv-ll_valuebound2.c[576,589] [2024-10-12 18:45:07,296 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-12 18:45:07,306 INFO L200 MainTranslator]: Completed pre-run [2024-10-12 18:45:07,317 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/cohendiv-ll_valuebound2.c[576,589] [2024-10-12 18:45:07,323 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-12 18:45:07,338 INFO L204 MainTranslator]: Completed translation [2024-10-12 18:45:07,338 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:45:07 WrapperNode [2024-10-12 18:45:07,338 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-12 18:45:07,339 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-12 18:45:07,339 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-12 18:45:07,339 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-12 18:45:07,346 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:45:07" (1/1) ... [2024-10-12 18:45:07,352 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:45:07" (1/1) ... [2024-10-12 18:45:07,366 INFO L138 Inliner]: procedures = 14, calls = 17, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 57 [2024-10-12 18:45:07,367 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-12 18:45:07,368 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-12 18:45:07,368 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-12 18:45:07,368 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-12 18:45:07,397 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:45:07" (1/1) ... [2024-10-12 18:45:07,397 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:45:07" (1/1) ... [2024-10-12 18:45:07,398 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:45:07" (1/1) ... [2024-10-12 18:45:07,417 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 18:45:07,430 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:45:07" (1/1) ... [2024-10-12 18:45:07,431 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:45:07" (1/1) ... [2024-10-12 18:45:07,433 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:45:07" (1/1) ... [2024-10-12 18:45:07,441 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:45:07" (1/1) ... [2024-10-12 18:45:07,441 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:45:07" (1/1) ... [2024-10-12 18:45:07,442 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:45:07" (1/1) ... [2024-10-12 18:45:07,446 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-12 18:45:07,447 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-12 18:45:07,447 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-12 18:45:07,447 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-12 18:45:07,448 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:45:07" (1/1) ... [2024-10-12 18:45:07,453 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-12 18:45:07,462 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 18:45:07,479 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 18:45:07,482 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 18:45:07,531 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-12 18:45:07,531 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-10-12 18:45:07,532 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-10-12 18:45:07,532 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-12 18:45:07,532 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-12 18:45:07,532 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-12 18:45:07,532 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-10-12 18:45:07,534 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-10-12 18:45:07,599 INFO L238 CfgBuilder]: Building ICFG [2024-10-12 18:45:07,601 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-12 18:45:07,786 INFO L? ?]: Removed 5 outVars from TransFormulas that were not future-live. [2024-10-12 18:45:07,786 INFO L287 CfgBuilder]: Performing block encoding [2024-10-12 18:45:07,812 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-12 18:45:07,813 INFO L314 CfgBuilder]: Removed 2 assume(true) statements. [2024-10-12 18:45:07,813 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 06:45:07 BoogieIcfgContainer [2024-10-12 18:45:07,813 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-12 18:45:07,815 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-12 18:45:07,816 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-12 18:45:07,821 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-12 18:45:07,821 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 06:45:07" (1/3) ... [2024-10-12 18:45:07,822 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b5041c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 06:45:07, skipping insertion in model container [2024-10-12 18:45:07,822 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:45:07" (2/3) ... [2024-10-12 18:45:07,822 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b5041c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 06:45:07, skipping insertion in model container [2024-10-12 18:45:07,823 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 06:45:07" (3/3) ... [2024-10-12 18:45:07,824 INFO L112 eAbstractionObserver]: Analyzing ICFG cohendiv-ll_valuebound2.c [2024-10-12 18:45:07,844 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-12 18:45:07,844 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-12 18:45:07,923 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-12 18:45:07,932 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;@6e122d01, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-12 18:45:07,934 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-12 18:45:07,938 INFO L276 IsEmpty]: Start isEmpty. Operand has 31 states, 17 states have (on average 1.5294117647058822) internal successors, (26), 18 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 18:45:07,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-10-12 18:45:07,946 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 18:45:07,946 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 18:45:07,947 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 18:45:07,953 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 18:45:07,954 INFO L85 PathProgramCache]: Analyzing trace with hash -1096708698, now seen corresponding path program 1 times [2024-10-12 18:45:07,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 18:45:07,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873302737] [2024-10-12 18:45:07,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:45:07,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 18:45:08,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:45:08,148 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 18:45:08,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:45:08,157 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-12 18:45:08,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:45:08,166 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-12 18:45:08,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:45:08,175 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 18:45:08,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 18:45:08,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873302737] [2024-10-12 18:45:08,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1873302737] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 18:45:08,177 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 18:45:08,177 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-12 18:45:08,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275836897] [2024-10-12 18:45:08,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 18:45:08,186 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-12 18:45:08,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 18:45:08,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-12 18:45:08,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-12 18:45:08,208 INFO L87 Difference]: Start difference. First operand has 31 states, 17 states have (on average 1.5294117647058822) internal successors, (26), 18 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 18:45:08,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 18:45:08,240 INFO L93 Difference]: Finished difference Result 60 states and 99 transitions. [2024-10-12 18:45:08,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-12 18:45:08,243 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 18:45:08,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 18:45:08,251 INFO L225 Difference]: With dead ends: 60 [2024-10-12 18:45:08,251 INFO L226 Difference]: Without dead ends: 29 [2024-10-12 18:45:08,254 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 18:45:08,258 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 18:45:08,259 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 18:45:08,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2024-10-12 18:45:08,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2024-10-12 18:45:08,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 16 states have (on average 1.1875) internal successors, (19), 17 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 18:45:08,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 38 transitions. [2024-10-12 18:45:08,296 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 38 transitions. Word has length 23 [2024-10-12 18:45:08,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 18:45:08,297 INFO L471 AbstractCegarLoop]: Abstraction has 29 states and 38 transitions. [2024-10-12 18:45:08,297 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 18:45:08,297 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 38 transitions. [2024-10-12 18:45:08,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-10-12 18:45:08,299 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 18:45:08,299 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 18:45:08,299 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-12 18:45:08,299 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 18:45:08,300 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 18:45:08,300 INFO L85 PathProgramCache]: Analyzing trace with hash 2049551268, now seen corresponding path program 1 times [2024-10-12 18:45:08,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 18:45:08,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [730621968] [2024-10-12 18:45:08,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:45:08,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 18:45:08,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-12 18:45:08,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [152677582] [2024-10-12 18:45:08,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:45:08,347 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:45:08,347 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 18:45:08,349 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 18:45:08,351 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 18:45:08,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:45:08,428 INFO L255 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-12 18:45:08,436 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 18:45:08,559 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 18:45:08,559 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 18:45:08,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 18:45:08,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [730621968] [2024-10-12 18:45:08,561 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-12 18:45:08,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [152677582] [2024-10-12 18:45:08,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [152677582] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 18:45:08,563 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 18:45:08,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-12 18:45:08,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755901828] [2024-10-12 18:45:08,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 18:45:08,564 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-12 18:45:08,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 18:45:08,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-12 18:45:08,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-12 18:45:08,567 INFO L87 Difference]: Start difference. First operand 29 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 18:45:08,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 18:45:08,639 INFO L93 Difference]: Finished difference Result 40 states and 51 transitions. [2024-10-12 18:45:08,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-12 18:45:08,640 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 18:45:08,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 18:45:08,641 INFO L225 Difference]: With dead ends: 40 [2024-10-12 18:45:08,642 INFO L226 Difference]: Without dead ends: 38 [2024-10-12 18:45:08,643 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 19 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 18:45:08,644 INFO L432 NwaCegarLoop]: 34 mSDtfsCounter, 4 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-12 18:45:08,646 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 124 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 18:45:08,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2024-10-12 18:45:08,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 35. [2024-10-12 18:45:08,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 20 states have (on average 1.15) internal successors, (23), 22 states have internal predecessors, (23), 11 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) [2024-10-12 18:45:08,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 44 transitions. [2024-10-12 18:45:08,664 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 44 transitions. Word has length 23 [2024-10-12 18:45:08,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 18:45:08,664 INFO L471 AbstractCegarLoop]: Abstraction has 35 states and 44 transitions. [2024-10-12 18:45:08,664 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 18:45:08,664 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 44 transitions. [2024-10-12 18:45:08,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-10-12 18:45:08,666 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 18:45:08,666 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 18:45:08,684 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-12 18:45:08,869 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:45:08,870 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 18:45:08,871 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 18:45:08,871 INFO L85 PathProgramCache]: Analyzing trace with hash 1906772284, now seen corresponding path program 1 times [2024-10-12 18:45:08,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 18:45:08,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1865940455] [2024-10-12 18:45:08,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:45:08,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 18:45:08,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-12 18:45:08,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1995601367] [2024-10-12 18:45:08,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:45:08,904 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:45:08,904 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 18:45:08,906 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 18:45:08,909 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 18:45:08,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:45:08,972 INFO L255 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-12 18:45:08,974 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 18:45:09,039 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 18:45:09,039 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 18:45:09,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 18:45:09,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1865940455] [2024-10-12 18:45:09,040 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-12 18:45:09,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1995601367] [2024-10-12 18:45:09,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1995601367] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 18:45:09,040 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 18:45:09,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-12 18:45:09,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758642382] [2024-10-12 18:45:09,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 18:45:09,041 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-12 18:45:09,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 18:45:09,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-12 18:45:09,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-12 18:45:09,042 INFO L87 Difference]: Start difference. First operand 35 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, (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 18:45:09,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 18:45:09,143 INFO L93 Difference]: Finished difference Result 52 states and 67 transitions. [2024-10-12 18:45:09,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-12 18:45:09,144 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 18:45:09,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 18:45:09,145 INFO L225 Difference]: With dead ends: 52 [2024-10-12 18:45:09,145 INFO L226 Difference]: Without dead ends: 49 [2024-10-12 18:45:09,146 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 24 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 18:45:09,147 INFO L432 NwaCegarLoop]: 31 mSDtfsCounter, 9 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 18:45:09,147 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 113 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 18:45:09,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2024-10-12 18:45:09,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 48. [2024-10-12 18:45:09,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 27 states have (on average 1.1481481481481481) internal successors, (31), 28 states have internal predecessors, (31), 16 states have call successors, (16), 4 states have call predecessors, (16), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2024-10-12 18:45:09,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 62 transitions. [2024-10-12 18:45:09,159 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 62 transitions. Word has length 28 [2024-10-12 18:45:09,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 18:45:09,160 INFO L471 AbstractCegarLoop]: Abstraction has 48 states and 62 transitions. [2024-10-12 18:45:09,160 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 18:45:09,160 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 62 transitions. [2024-10-12 18:45:09,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-10-12 18:45:09,161 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 18:45:09,161 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, 1, 1] [2024-10-12 18:45:09,178 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 18:45:09,361 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2024-10-12 18:45:09,362 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 18:45:09,363 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 18:45:09,363 INFO L85 PathProgramCache]: Analyzing trace with hash 878585613, now seen corresponding path program 1 times [2024-10-12 18:45:09,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 18:45:09,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [218081592] [2024-10-12 18:45:09,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:45:09,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 18:45:09,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-12 18:45:09,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1582388924] [2024-10-12 18:45:09,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:45:09,414 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:45:09,415 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 18:45:09,419 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 18:45:09,420 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 18:45:09,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:45:09,466 INFO L255 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-12 18:45:09,469 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 18:45:09,526 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 18:45:09,527 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 18:45:09,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 18:45:09,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [218081592] [2024-10-12 18:45:09,528 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-12 18:45:09,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1582388924] [2024-10-12 18:45:09,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1582388924] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 18:45:09,529 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 18:45:09,529 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-12 18:45:09,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148200564] [2024-10-12 18:45:09,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 18:45:09,530 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-12 18:45:09,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 18:45:09,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-12 18:45:09,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-12 18:45:09,533 INFO L87 Difference]: Start difference. First operand 48 states and 62 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-10-12 18:45:09,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 18:45:09,626 INFO L93 Difference]: Finished difference Result 74 states and 100 transitions. [2024-10-12 18:45:09,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-12 18:45:09,626 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 35 [2024-10-12 18:45:09,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 18:45:09,628 INFO L225 Difference]: With dead ends: 74 [2024-10-12 18:45:09,628 INFO L226 Difference]: Without dead ends: 72 [2024-10-12 18:45:09,629 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 31 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 18:45:09,630 INFO L432 NwaCegarLoop]: 36 mSDtfsCounter, 8 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 18:45:09,633 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 126 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 18:45:09,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2024-10-12 18:45:09,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 65. [2024-10-12 18:45:09,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 36 states have (on average 1.1666666666666667) internal successors, (42), 38 states have internal predecessors, (42), 23 states have call successors, (23), 5 states have call predecessors, (23), 5 states have return successors, (22), 21 states have call predecessors, (22), 22 states have call successors, (22) [2024-10-12 18:45:09,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 87 transitions. [2024-10-12 18:45:09,650 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 87 transitions. Word has length 35 [2024-10-12 18:45:09,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 18:45:09,651 INFO L471 AbstractCegarLoop]: Abstraction has 65 states and 87 transitions. [2024-10-12 18:45:09,651 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-10-12 18:45:09,651 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 87 transitions. [2024-10-12 18:45:09,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-10-12 18:45:09,652 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 18:45:09,653 INFO L215 NwaCegarLoop]: trace histogram [5, 4, 4, 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] [2024-10-12 18:45:09,666 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 18:45:09,856 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:45:09,857 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 18:45:09,857 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 18:45:09,857 INFO L85 PathProgramCache]: Analyzing trace with hash -170967411, now seen corresponding path program 1 times [2024-10-12 18:45:09,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 18:45:09,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [813246469] [2024-10-12 18:45:09,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:45:09,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 18:45:09,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:45:10,187 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 18:45:10,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:45:10,217 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-12 18:45:10,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:45:10,225 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-12 18:45:10,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:45:10,233 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-10-12 18:45:10,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:45:10,238 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-10-12 18:45:10,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:45:10,243 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-10-12 18:45:10,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:45:10,249 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-10-12 18:45:10,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:45:10,256 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-10-12 18:45:10,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 18:45:10,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [813246469] [2024-10-12 18:45:10,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [813246469] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 18:45:10,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1358307130] [2024-10-12 18:45:10,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:45:10,260 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:45:10,260 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 18:45:10,262 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 18:45:10,265 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 18:45:10,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:45:10,321 INFO L255 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-10-12 18:45:10,323 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 18:45:10,424 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-10-12 18:45:10,425 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 18:45:10,571 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-10-12 18:45:10,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1358307130] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 18:45:10,571 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 18:45:10,571 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 12 [2024-10-12 18:45:10,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691822199] [2024-10-12 18:45:10,572 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 18:45:10,572 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-12 18:45:10,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 18:45:10,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-12 18:45:10,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-10-12 18:45:10,574 INFO L87 Difference]: Start difference. First operand 65 states and 87 transitions. Second operand has 12 states, 12 states have (on average 2.0) internal successors, (24), 10 states have internal predecessors, (24), 4 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 3 states have call predecessors, (10), 4 states have call successors, (10) [2024-10-12 18:45:10,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 18:45:10,700 INFO L93 Difference]: Finished difference Result 73 states and 94 transitions. [2024-10-12 18:45:10,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-12 18:45:10,700 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.0) internal successors, (24), 10 states have internal predecessors, (24), 4 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 3 states have call predecessors, (10), 4 states have call successors, (10) Word has length 45 [2024-10-12 18:45:10,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 18:45:10,702 INFO L225 Difference]: With dead ends: 73 [2024-10-12 18:45:10,702 INFO L226 Difference]: Without dead ends: 71 [2024-10-12 18:45:10,703 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 95 SyntacticMatches, 4 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2024-10-12 18:45:10,704 INFO L432 NwaCegarLoop]: 28 mSDtfsCounter, 22 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 179 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 18:45:10,704 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 179 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 18:45:10,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2024-10-12 18:45:10,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 69. [2024-10-12 18:45:10,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 39 states have (on average 1.1538461538461537) internal successors, (45), 41 states have internal predecessors, (45), 23 states have call successors, (23), 6 states have call predecessors, (23), 6 states have return successors, (22), 21 states have call predecessors, (22), 22 states have call successors, (22) [2024-10-12 18:45:10,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 90 transitions. [2024-10-12 18:45:10,716 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 90 transitions. Word has length 45 [2024-10-12 18:45:10,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 18:45:10,717 INFO L471 AbstractCegarLoop]: Abstraction has 69 states and 90 transitions. [2024-10-12 18:45:10,717 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.0) internal successors, (24), 10 states have internal predecessors, (24), 4 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 3 states have call predecessors, (10), 4 states have call successors, (10) [2024-10-12 18:45:10,717 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 90 transitions. [2024-10-12 18:45:10,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-10-12 18:45:10,718 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 18:45:10,719 INFO L215 NwaCegarLoop]: trace histogram [6, 5, 5, 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] [2024-10-12 18:45:10,737 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 18:45:10,919 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:45:10,920 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 18:45:10,920 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 18:45:10,920 INFO L85 PathProgramCache]: Analyzing trace with hash -1378270461, now seen corresponding path program 1 times [2024-10-12 18:45:10,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 18:45:10,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1446737089] [2024-10-12 18:45:10,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:45:10,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 18:45:10,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:45:11,043 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 18:45:11,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:45:11,047 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-12 18:45:11,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:45:11,050 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-12 18:45:11,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:45:11,052 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-10-12 18:45:11,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:45:11,054 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-10-12 18:45:11,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:45:11,057 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-10-12 18:45:11,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:45:11,093 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-10-12 18:45:11,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:45:11,099 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-10-12 18:45:11,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:45:11,104 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 15 proven. 7 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-10-12 18:45:11,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 18:45:11,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1446737089] [2024-10-12 18:45:11,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1446737089] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 18:45:11,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [874739709] [2024-10-12 18:45:11,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:45:11,105 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:45:11,105 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 18:45:11,107 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 18:45:11,108 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 18:45:11,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:45:11,160 INFO L255 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-12 18:45:11,163 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 18:45:11,266 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2024-10-12 18:45:11,266 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 18:45:11,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [874739709] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 18:45:11,267 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 18:45:11,267 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 11 [2024-10-12 18:45:11,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739800367] [2024-10-12 18:45:11,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 18:45:11,268 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-12 18:45:11,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 18:45:11,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-12 18:45:11,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-10-12 18:45:11,270 INFO L87 Difference]: Start difference. First operand 69 states and 90 transitions. Second operand has 6 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-10-12 18:45:11,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 18:45:11,395 INFO L93 Difference]: Finished difference Result 82 states and 106 transitions. [2024-10-12 18:45:11,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-12 18:45:11,396 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 51 [2024-10-12 18:45:11,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 18:45:11,398 INFO L225 Difference]: With dead ends: 82 [2024-10-12 18:45:11,399 INFO L226 Difference]: Without dead ends: 80 [2024-10-12 18:45:11,400 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-10-12 18:45:11,401 INFO L432 NwaCegarLoop]: 37 mSDtfsCounter, 8 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 159 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 18:45:11,403 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 159 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 18:45:11,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2024-10-12 18:45:11,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 75. [2024-10-12 18:45:11,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 42 states have (on average 1.1428571428571428) internal successors, (48), 46 states have internal predecessors, (48), 25 states have call successors, (25), 7 states have call predecessors, (25), 7 states have return successors, (24), 21 states have call predecessors, (24), 24 states have call successors, (24) [2024-10-12 18:45:11,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 97 transitions. [2024-10-12 18:45:11,425 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 97 transitions. Word has length 51 [2024-10-12 18:45:11,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 18:45:11,426 INFO L471 AbstractCegarLoop]: Abstraction has 75 states and 97 transitions. [2024-10-12 18:45:11,426 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-10-12 18:45:11,426 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 97 transitions. [2024-10-12 18:45:11,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-10-12 18:45:11,428 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 18:45:11,428 INFO L215 NwaCegarLoop]: trace histogram [7, 6, 6, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 18:45:11,446 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-10-12 18:45:11,632 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:45:11,633 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 18:45:11,633 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 18:45:11,633 INFO L85 PathProgramCache]: Analyzing trace with hash -1550111725, now seen corresponding path program 1 times [2024-10-12 18:45:11,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 18:45:11,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1839929751] [2024-10-12 18:45:11,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:45:11,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 18:45:11,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-12 18:45:11,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1124811617] [2024-10-12 18:45:11,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:45:11,654 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:45:11,654 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 18:45:11,656 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 18:45:11,663 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-12 18:45:11,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:45:11,721 INFO L255 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-10-12 18:45:11,725 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 18:45:12,023 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 18 proven. 3 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2024-10-12 18:45:12,024 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 18:45:12,262 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2024-10-12 18:45:12,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 18:45:12,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1839929751] [2024-10-12 18:45:12,263 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-12 18:45:12,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1124811617] [2024-10-12 18:45:12,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1124811617] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-12 18:45:12,263 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 18:45:12,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [11] total 17 [2024-10-12 18:45:12,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193012762] [2024-10-12 18:45:12,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 18:45:12,264 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-12 18:45:12,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 18:45:12,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-12 18:45:12,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=218, Unknown=0, NotChecked=0, Total=272 [2024-10-12 18:45:12,265 INFO L87 Difference]: Start difference. First operand 75 states and 97 transitions. Second operand has 8 states, 8 states have (on average 2.25) internal successors, (18), 7 states have internal predecessors, (18), 4 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) [2024-10-12 18:45:12,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 18:45:12,430 INFO L93 Difference]: Finished difference Result 81 states and 102 transitions. [2024-10-12 18:45:12,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-12 18:45:12,431 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 7 states have internal predecessors, (18), 4 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) Word has length 58 [2024-10-12 18:45:12,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 18:45:12,432 INFO L225 Difference]: With dead ends: 81 [2024-10-12 18:45:12,432 INFO L226 Difference]: Without dead ends: 78 [2024-10-12 18:45:12,433 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=276, Unknown=0, NotChecked=0, Total=342 [2024-10-12 18:45:12,433 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 16 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 125 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 18:45:12,433 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 125 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 18:45:12,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2024-10-12 18:45:12,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2024-10-12 18:45:12,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 45 states have (on average 1.1111111111111112) internal successors, (50), 48 states have internal predecessors, (50), 24 states have call successors, (24), 8 states have call predecessors, (24), 8 states have return successors, (24), 21 states have call predecessors, (24), 24 states have call successors, (24) [2024-10-12 18:45:12,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 98 transitions. [2024-10-12 18:45:12,456 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 98 transitions. Word has length 58 [2024-10-12 18:45:12,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 18:45:12,457 INFO L471 AbstractCegarLoop]: Abstraction has 78 states and 98 transitions. [2024-10-12 18:45:12,457 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 7 states have internal predecessors, (18), 4 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) [2024-10-12 18:45:12,457 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 98 transitions. [2024-10-12 18:45:12,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-10-12 18:45:12,459 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 18:45:12,459 INFO L215 NwaCegarLoop]: trace histogram [10, 9, 9, 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, 1] [2024-10-12 18:45:12,476 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-10-12 18:45:12,663 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:45:12,664 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 18:45:12,664 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 18:45:12,664 INFO L85 PathProgramCache]: Analyzing trace with hash 1692835121, now seen corresponding path program 1 times [2024-10-12 18:45:12,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 18:45:12,664 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [203993310] [2024-10-12 18:45:12,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:45:12,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 18:45:12,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:45:12,802 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 18:45:12,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:45:12,804 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-12 18:45:12,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:45:12,807 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-12 18:45:12,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:45:12,809 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-10-12 18:45:12,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:45:12,811 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-10-12 18:45:12,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:45:12,814 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-10-12 18:45:12,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:45:12,816 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-10-12 18:45:12,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:45:12,819 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-10-12 18:45:12,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:45:12,821 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-10-12 18:45:12,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:45:12,824 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-10-12 18:45:12,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:45:12,844 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-10-12 18:45:12,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:45:12,848 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-10-12 18:45:12,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:45:12,852 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 39 proven. 7 refuted. 0 times theorem prover too weak. 134 trivial. 0 not checked. [2024-10-12 18:45:12,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 18:45:12,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [203993310] [2024-10-12 18:45:12,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [203993310] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 18:45:12,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1872421740] [2024-10-12 18:45:12,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:45:12,853 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:45:12,853 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 18:45:12,855 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 18:45:12,856 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-12 18:45:12,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:45:12,917 INFO L255 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-10-12 18:45:12,919 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 18:45:12,981 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 39 proven. 7 refuted. 0 times theorem prover too weak. 134 trivial. 0 not checked. [2024-10-12 18:45:12,981 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 18:45:13,093 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 39 proven. 7 refuted. 0 times theorem prover too weak. 134 trivial. 0 not checked. [2024-10-12 18:45:13,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1872421740] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 18:45:13,093 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 18:45:13,093 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 11 [2024-10-12 18:45:13,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975208415] [2024-10-12 18:45:13,093 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 18:45:13,094 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-12 18:45:13,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 18:45:13,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-12 18:45:13,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-10-12 18:45:13,095 INFO L87 Difference]: Start difference. First operand 78 states and 98 transitions. Second operand has 11 states, 10 states have (on average 2.6) internal successors, (26), 8 states have internal predecessors, (26), 4 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2024-10-12 18:45:13,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 18:45:13,241 INFO L93 Difference]: Finished difference Result 88 states and 106 transitions. [2024-10-12 18:45:13,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-12 18:45:13,241 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.6) internal successors, (26), 8 states have internal predecessors, (26), 4 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 74 [2024-10-12 18:45:13,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 18:45:13,243 INFO L225 Difference]: With dead ends: 88 [2024-10-12 18:45:13,243 INFO L226 Difference]: Without dead ends: 86 [2024-10-12 18:45:13,243 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 166 SyntacticMatches, 3 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2024-10-12 18:45:13,244 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 13 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 18:45:13,244 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 157 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 18:45:13,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2024-10-12 18:45:13,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 63. [2024-10-12 18:45:13,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 39 states have (on average 1.0769230769230769) internal successors, (42), 39 states have internal predecessors, (42), 15 states have call successors, (15), 8 states have call predecessors, (15), 8 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2024-10-12 18:45:13,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 72 transitions. [2024-10-12 18:45:13,258 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 72 transitions. Word has length 74 [2024-10-12 18:45:13,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 18:45:13,259 INFO L471 AbstractCegarLoop]: Abstraction has 63 states and 72 transitions. [2024-10-12 18:45:13,259 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.6) internal successors, (26), 8 states have internal predecessors, (26), 4 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2024-10-12 18:45:13,259 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 72 transitions. [2024-10-12 18:45:13,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2024-10-12 18:45:13,260 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 18:45:13,260 INFO L215 NwaCegarLoop]: trace histogram [10, 9, 9, 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] [2024-10-12 18:45:13,278 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-10-12 18:45:13,464 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:45:13,465 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 18:45:13,465 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 18:45:13,465 INFO L85 PathProgramCache]: Analyzing trace with hash -521649002, now seen corresponding path program 2 times [2024-10-12 18:45:13,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 18:45:13,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1058564928] [2024-10-12 18:45:13,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:45:13,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 18:45:13,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:45:13,592 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 18:45:13,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:45:13,595 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-12 18:45:13,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:45:13,598 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-12 18:45:13,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:45:13,600 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-10-12 18:45:13,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:45:13,602 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-10-12 18:45:13,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:45:13,604 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-10-12 18:45:13,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:45:13,607 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-10-12 18:45:13,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:45:13,610 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-10-12 18:45:13,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:45:13,613 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-10-12 18:45:13,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:45:13,616 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-10-12 18:45:13,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:45:13,621 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-10-12 18:45:13,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:45:13,624 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-10-12 18:45:13,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:45:13,629 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 22 proven. 4 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2024-10-12 18:45:13,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 18:45:13,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1058564928] [2024-10-12 18:45:13,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1058564928] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 18:45:13,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1921880387] [2024-10-12 18:45:13,629 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-12 18:45:13,629 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:45:13,630 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 18:45:13,632 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 18:45:13,634 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-12 18:45:13,689 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-12 18:45:13,690 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-12 18:45:13,691 INFO L255 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-12 18:45:13,693 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 18:45:13,750 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 78 proven. 0 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2024-10-12 18:45:13,750 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 18:45:13,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1921880387] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 18:45:13,750 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 18:45:13,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 9 [2024-10-12 18:45:13,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323634452] [2024-10-12 18:45:13,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 18:45:13,751 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-12 18:45:13,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 18:45:13,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-12 18:45:13,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-10-12 18:45:13,754 INFO L87 Difference]: Start difference. First operand 63 states and 72 transitions. Second operand has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 4 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2024-10-12 18:45:13,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 18:45:13,859 INFO L93 Difference]: Finished difference Result 112 states and 136 transitions. [2024-10-12 18:45:13,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-12 18:45:13,860 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), 4 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) Word has length 75 [2024-10-12 18:45:13,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 18:45:13,861 INFO L225 Difference]: With dead ends: 112 [2024-10-12 18:45:13,861 INFO L226 Difference]: Without dead ends: 77 [2024-10-12 18:45:13,862 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-10-12 18:45:13,862 INFO L432 NwaCegarLoop]: 36 mSDtfsCounter, 3 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 119 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 18:45:13,862 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 119 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 18:45:13,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2024-10-12 18:45:13,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 73. [2024-10-12 18:45:13,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 43 states have (on average 1.069767441860465) internal successors, (46), 43 states have internal predecessors, (46), 21 states have call successors, (21), 8 states have call predecessors, (21), 8 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2024-10-12 18:45:13,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 88 transitions. [2024-10-12 18:45:13,890 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 88 transitions. Word has length 75 [2024-10-12 18:45:13,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 18:45:13,890 INFO L471 AbstractCegarLoop]: Abstraction has 73 states and 88 transitions. [2024-10-12 18:45:13,890 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), 4 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2024-10-12 18:45:13,891 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 88 transitions. [2024-10-12 18:45:13,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2024-10-12 18:45:13,892 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 18:45:13,892 INFO L215 NwaCegarLoop]: trace histogram [14, 13, 13, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 18:45:13,910 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 18:45:14,093 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,SelfDestructingSolverStorable8 [2024-10-12 18:45:14,093 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 18:45:14,094 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 18:45:14,094 INFO L85 PathProgramCache]: Analyzing trace with hash 1018524868, now seen corresponding path program 1 times [2024-10-12 18:45:14,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 18:45:14,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1161360405] [2024-10-12 18:45:14,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:45:14,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 18:45:14,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:45:14,227 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 18:45:14,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:45:14,230 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-12 18:45:14,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:45:14,232 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-12 18:45:14,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:45:14,234 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-10-12 18:45:14,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:45:14,237 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-10-12 18:45:14,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:45:14,239 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-10-12 18:45:14,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:45:14,242 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-10-12 18:45:14,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:45:14,245 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-10-12 18:45:14,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:45:14,249 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-10-12 18:45:14,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:45:14,252 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-10-12 18:45:14,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:45:14,255 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-10-12 18:45:14,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:45:14,258 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-10-12 18:45:14,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:45:14,261 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-10-12 18:45:14,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:45:14,266 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-10-12 18:45:14,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:45:14,269 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-10-12 18:45:14,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:45:14,273 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2024-10-12 18:45:14,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:45:14,277 INFO L134 CoverageAnalysis]: Checked inductivity of 367 backedges. 30 proven. 13 refuted. 0 times theorem prover too weak. 324 trivial. 0 not checked. [2024-10-12 18:45:14,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 18:45:14,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1161360405] [2024-10-12 18:45:14,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1161360405] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 18:45:14,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [822190493] [2024-10-12 18:45:14,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:45:14,278 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:45:14,278 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 18:45:14,280 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 18:45:14,281 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-10-12 18:45:14,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:45:14,338 INFO L255 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-12 18:45:14,340 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 18:45:14,480 INFO L134 CoverageAnalysis]: Checked inductivity of 367 backedges. 30 proven. 13 refuted. 0 times theorem prover too weak. 324 trivial. 0 not checked. [2024-10-12 18:45:14,481 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 18:45:14,735 INFO L134 CoverageAnalysis]: Checked inductivity of 367 backedges. 35 proven. 8 refuted. 0 times theorem prover too weak. 324 trivial. 0 not checked. [2024-10-12 18:45:14,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [822190493] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 18:45:14,735 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 18:45:14,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 9] total 19 [2024-10-12 18:45:14,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625079549] [2024-10-12 18:45:14,736 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 18:45:14,736 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-10-12 18:45:14,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 18:45:14,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-10-12 18:45:14,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=290, Unknown=0, NotChecked=0, Total=342 [2024-10-12 18:45:14,737 INFO L87 Difference]: Start difference. First operand 73 states and 88 transitions. Second operand has 19 states, 19 states have (on average 2.3157894736842106) internal successors, (44), 17 states have internal predecessors, (44), 12 states have call successors, (39), 3 states have call predecessors, (39), 1 states have return successors, (36), 12 states have call predecessors, (36), 12 states have call successors, (36) [2024-10-12 18:45:15,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 18:45:15,405 INFO L93 Difference]: Finished difference Result 140 states and 181 transitions. [2024-10-12 18:45:15,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-10-12 18:45:15,406 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.3157894736842106) internal successors, (44), 17 states have internal predecessors, (44), 12 states have call successors, (39), 3 states have call predecessors, (39), 1 states have return successors, (36), 12 states have call predecessors, (36), 12 states have call successors, (36) Word has length 98 [2024-10-12 18:45:15,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 18:45:15,406 INFO L225 Difference]: With dead ends: 140 [2024-10-12 18:45:15,406 INFO L226 Difference]: Without dead ends: 0 [2024-10-12 18:45:15,408 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 255 GetRequests, 217 SyntacticMatches, 3 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 214 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=276, Invalid=1056, Unknown=0, NotChecked=0, Total=1332 [2024-10-12 18:45:15,408 INFO L432 NwaCegarLoop]: 57 mSDtfsCounter, 56 mSDsluCounter, 361 mSDsCounter, 0 mSdLazyCounter, 264 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 418 SdHoareTripleChecker+Invalid, 342 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 264 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-12 18:45:15,408 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 418 Invalid, 342 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 264 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-12 18:45:15,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-10-12 18:45:15,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-10-12 18:45:15,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 18:45:15,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-10-12 18:45:15,409 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 98 [2024-10-12 18:45:15,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 18:45:15,409 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-10-12 18:45:15,410 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.3157894736842106) internal successors, (44), 17 states have internal predecessors, (44), 12 states have call successors, (39), 3 states have call predecessors, (39), 1 states have return successors, (36), 12 states have call predecessors, (36), 12 states have call successors, (36) [2024-10-12 18:45:15,410 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-10-12 18:45:15,410 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-10-12 18:45:15,413 INFO L782 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-10-12 18:45:15,430 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-10-12 18:45:15,613 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,SelfDestructingSolverStorable9 [2024-10-12 18:45:15,617 INFO L407 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 18:45:15,619 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-10-12 18:45:17,129 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-10-12 18:45:17,163 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.10 06:45:17 BoogieIcfgContainer [2024-10-12 18:45:17,163 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-10-12 18:45:17,164 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-10-12 18:45:17,164 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-10-12 18:45:17,164 INFO L274 PluginConnector]: Witness Printer initialized [2024-10-12 18:45:17,164 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 06:45:07" (3/4) ... [2024-10-12 18:45:17,166 INFO L139 WitnessPrinter]: Generating witness for correct program [2024-10-12 18:45:17,170 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not [2024-10-12 18:45:17,170 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2024-10-12 18:45:17,174 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2024-10-12 18:45:17,175 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2024-10-12 18:45:17,175 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-10-12 18:45:17,175 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-10-12 18:45:17,280 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-10-12 18:45:17,281 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-10-12 18:45:17,281 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-10-12 18:45:17,282 INFO L158 Benchmark]: Toolchain (without parser) took 10204.19ms. Allocated memory was 172.0MB in the beginning and 262.1MB in the end (delta: 90.2MB). Free memory was 102.5MB in the beginning and 188.3MB in the end (delta: -85.9MB). Peak memory consumption was 4.7MB. Max. memory is 16.1GB. [2024-10-12 18:45:17,282 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 172.0MB. Free memory is still 128.3MB. There was no memory consumed. Max. memory is 16.1GB. [2024-10-12 18:45:17,282 INFO L158 Benchmark]: CACSL2BoogieTranslator took 257.95ms. Allocated memory is still 172.0MB. Free memory was 102.3MB in the beginning and 90.1MB in the end (delta: 12.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-10-12 18:45:17,282 INFO L158 Benchmark]: Boogie Procedure Inliner took 27.79ms. Allocated memory is still 172.0MB. Free memory was 89.9MB in the beginning and 88.4MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2024-10-12 18:45:17,283 INFO L158 Benchmark]: Boogie Preprocessor took 78.49ms. Allocated memory is still 172.0MB. Free memory was 88.4MB in the beginning and 143.0MB in the end (delta: -54.6MB). Peak memory consumption was 3.9MB. Max. memory is 16.1GB. [2024-10-12 18:45:17,283 INFO L158 Benchmark]: RCFGBuilder took 366.65ms. Allocated memory is still 172.0MB. Free memory was 143.0MB in the beginning and 130.8MB in the end (delta: 12.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-10-12 18:45:17,284 INFO L158 Benchmark]: TraceAbstraction took 9347.56ms. Allocated memory was 172.0MB in the beginning and 262.1MB in the end (delta: 90.2MB). Free memory was 129.5MB in the beginning and 192.5MB in the end (delta: -63.0MB). Peak memory consumption was 112.6MB. Max. memory is 16.1GB. [2024-10-12 18:45:17,284 INFO L158 Benchmark]: Witness Printer took 117.67ms. Allocated memory is still 262.1MB. Free memory was 192.5MB in the beginning and 188.3MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-10-12 18:45:17,286 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 172.0MB. Free memory is still 128.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 257.95ms. Allocated memory is still 172.0MB. Free memory was 102.3MB in the beginning and 90.1MB in the end (delta: 12.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 27.79ms. Allocated memory is still 172.0MB. Free memory was 89.9MB in the beginning and 88.4MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 78.49ms. Allocated memory is still 172.0MB. Free memory was 88.4MB in the beginning and 143.0MB in the end (delta: -54.6MB). Peak memory consumption was 3.9MB. Max. memory is 16.1GB. * RCFGBuilder took 366.65ms. Allocated memory is still 172.0MB. Free memory was 143.0MB in the beginning and 130.8MB in the end (delta: 12.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 9347.56ms. Allocated memory was 172.0MB in the beginning and 262.1MB in the end (delta: 90.2MB). Free memory was 129.5MB in the beginning and 192.5MB in the end (delta: -63.0MB). Peak memory consumption was 112.6MB. Max. memory is 16.1GB. * Witness Printer took 117.67ms. Allocated memory is still 262.1MB. Free memory was 192.5MB in the beginning and 188.3MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. 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, 31 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 7.7s, OverallIterations: 10, TraceHistogramMax: 14, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 163 SdHoareTripleChecker+Valid, 1.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 139 mSDsluCounter, 1558 SdHoareTripleChecker+Invalid, 0.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1215 mSDsCounter, 132 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 788 IncrementalHoareTripleChecker+Invalid, 920 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 132 mSolverCounterUnsat, 343 mSDtfsCounter, 788 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 941 GetRequests, 825 SyntacticMatches, 10 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 320 ImplicationChecksByTransitivity, 1.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=78occurred in iteration=7, InterpolantAutomatonStates: 70, 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, 10 MinimizatonAttempts, 45 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 2.9s InterpolantComputationTime, 997 NumberOfCodeBlocks, 997 NumberOfCodeBlocksAsserted, 20 NumberOfCheckSat, 1109 ConstructedInterpolants, 0 QuantifiedInterpolants, 2327 SizeOfPredicates, 18 NumberOfNonLiveVariables, 1157 ConjunctsInSsa, 83 ConjunctsInUnsatCore, 19 InterpolantComputations, 7 PerfectInterpolantSequences, 2406/2493 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: 47]: Loop Invariant Derived loop invariant: ((((((((((__int128) a * y) + r) == ((__int128) b + x)) && (b <= y)) && (0 <= r)) && (r == x)) && (q == 0)) && (x <= 2)) || (((((((0 <= x) && (x == (r + ((__int128) q * y)))) && (0 <= y)) && (b <= ((__int128) r + y))) && (0 <= r)) && (((__int128) b + x) == ((((__int128) a * y) + r) + ((__int128) q * y)))) && (x <= 2))) - InvariantResult [Line: 38]: Loop Invariant Derived loop invariant: ((((((((0 <= x) && (x == (r + ((__int128) q * y)))) && (0 <= y)) && (0 <= ((__int128) r + y))) && (((__int128) b + x) == ((((__int128) a * y) + r) + ((__int128) q * y)))) && (x <= 2)) || ((((((b == 0) && (0 <= r)) && (r == x)) && (q == 0)) && (a == 0)) && (x <= 2))) || ((((((((__int128) r + 1) <= y) && (0 <= x)) && (x == (r + ((__int128) q * y)))) && (b <= y)) && (((__int128) b + x) == ((((__int128) a * y) + r) + ((__int128) q * y)))) && (x <= 2))) - 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 18:45:17,309 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