./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_valuebound5.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 803cd42f 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 ../sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_valuebound5.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 ad40c7e9e7b0c80b1cec1e361a82d834fdd8270143479aa0f4bf8bc2b59c2aa5 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-803cd42-m [2024-11-22 01:14:22,445 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-22 01:14:22,537 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-22 01:14:22,543 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-22 01:14:22,545 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-22 01:14:22,577 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-22 01:14:22,579 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-22 01:14:22,580 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-22 01:14:22,580 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-22 01:14:22,581 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-22 01:14:22,582 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-22 01:14:22,582 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-22 01:14:22,583 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-22 01:14:22,586 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-22 01:14:22,587 INFO L153 SettingsManager]: * Use SBE=true [2024-11-22 01:14:22,587 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-22 01:14:22,587 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-22 01:14:22,588 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-22 01:14:22,588 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-22 01:14:22,588 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-22 01:14:22,588 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-22 01:14:22,589 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-22 01:14:22,589 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-22 01:14:22,589 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-22 01:14:22,590 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-22 01:14:22,590 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-22 01:14:22,590 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-22 01:14:22,590 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-22 01:14:22,591 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-22 01:14:22,591 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-22 01:14:22,591 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-22 01:14:22,591 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-22 01:14:22,592 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 01:14:22,592 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-22 01:14:22,594 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-22 01:14:22,600 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-22 01:14:22,600 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-22 01:14:22,600 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-22 01:14:22,600 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-22 01:14:22,601 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-22 01:14:22,601 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-22 01:14:22,602 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-22 01:14:22,602 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ad40c7e9e7b0c80b1cec1e361a82d834fdd8270143479aa0f4bf8bc2b59c2aa5 [2024-11-22 01:14:22,864 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-22 01:14:22,888 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-22 01:14:22,892 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-22 01:14:22,893 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-22 01:14:22,893 INFO L274 PluginConnector]: CDTParser initialized [2024-11-22 01:14:22,895 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_valuebound5.c [2024-11-22 01:14:24,364 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-22 01:14:24,532 INFO L384 CDTParser]: Found 1 translation units. [2024-11-22 01:14:24,533 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_valuebound5.c [2024-11-22 01:14:24,540 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eb1b0bf7f/188718505ea044d6987c6ef2a7dfa7ee/FLAG3f05f2c42 [2024-11-22 01:14:24,937 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eb1b0bf7f/188718505ea044d6987c6ef2a7dfa7ee [2024-11-22 01:14:24,940 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-22 01:14:24,942 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-22 01:14:24,944 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-22 01:14:24,944 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-22 01:14:24,949 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-22 01:14:24,950 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:14:24" (1/1) ... [2024-11-22 01:14:24,950 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@166fe4b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:14:24, skipping insertion in model container [2024-11-22 01:14:24,951 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:14:24" (1/1) ... [2024-11-22 01:14:24,973 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-22 01:14:25,164 WARN L250 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/cohencu-ll_valuebound5.c[588,601] [2024-11-22 01:14:25,188 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 01:14:25,199 INFO L200 MainTranslator]: Completed pre-run [2024-11-22 01:14:25,210 WARN L250 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/cohencu-ll_valuebound5.c[588,601] [2024-11-22 01:14:25,221 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 01:14:25,237 INFO L204 MainTranslator]: Completed translation [2024-11-22 01:14:25,238 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:14:25 WrapperNode [2024-11-22 01:14:25,238 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-22 01:14:25,239 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-22 01:14:25,239 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-22 01:14:25,240 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-22 01:14:25,246 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:14:25" (1/1) ... [2024-11-22 01:14:25,254 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:14:25" (1/1) ... [2024-11-22 01:14:25,270 INFO L138 Inliner]: procedures = 14, calls = 19, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 48 [2024-11-22 01:14:25,271 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-22 01:14:25,271 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-22 01:14:25,272 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-22 01:14:25,272 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-22 01:14:25,283 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:14:25" (1/1) ... [2024-11-22 01:14:25,283 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:14:25" (1/1) ... [2024-11-22 01:14:25,284 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:14:25" (1/1) ... [2024-11-22 01:14:25,298 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]. [2024-11-22 01:14:25,299 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:14:25" (1/1) ... [2024-11-22 01:14:25,299 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:14:25" (1/1) ... [2024-11-22 01:14:25,302 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:14:25" (1/1) ... [2024-11-22 01:14:25,308 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:14:25" (1/1) ... [2024-11-22 01:14:25,309 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:14:25" (1/1) ... [2024-11-22 01:14:25,310 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:14:25" (1/1) ... [2024-11-22 01:14:25,311 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-22 01:14:25,312 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-22 01:14:25,312 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-22 01:14:25,312 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-22 01:14:25,313 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:14:25" (1/1) ... [2024-11-22 01:14:25,323 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 01:14:25,337 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 01:14:25,356 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) [2024-11-22 01:14:25,363 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 [2024-11-22 01:14:25,407 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-22 01:14:25,408 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-22 01:14:25,408 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-22 01:14:25,408 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-22 01:14:25,408 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-22 01:14:25,408 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-22 01:14:25,465 INFO L238 CfgBuilder]: Building ICFG [2024-11-22 01:14:25,469 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-22 01:14:25,653 INFO L? ?]: Removed 6 outVars from TransFormulas that were not future-live. [2024-11-22 01:14:25,657 INFO L287 CfgBuilder]: Performing block encoding [2024-11-22 01:14:25,674 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-22 01:14:25,675 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-22 01:14:25,675 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:14:25 BoogieIcfgContainer [2024-11-22 01:14:25,675 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-22 01:14:25,679 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-22 01:14:25,679 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-22 01:14:25,683 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-22 01:14:25,683 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 01:14:24" (1/3) ... [2024-11-22 01:14:25,684 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37dd53b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:14:25, skipping insertion in model container [2024-11-22 01:14:25,685 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:14:25" (2/3) ... [2024-11-22 01:14:25,685 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37dd53b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:14:25, skipping insertion in model container [2024-11-22 01:14:25,686 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:14:25" (3/3) ... [2024-11-22 01:14:25,687 INFO L112 eAbstractionObserver]: Analyzing ICFG cohencu-ll_valuebound5.c [2024-11-22 01:14:25,706 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-22 01:14:25,707 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-22 01:14:25,774 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-22 01:14:25,783 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;@11e86424, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-22 01:14:25,784 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-22 01:14:25,788 INFO L276 IsEmpty]: Start isEmpty. Operand has 27 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 14 states have internal predecessors, (19), 11 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2024-11-22 01:14:25,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-22 01:14:25,796 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 01:14:25,797 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 01:14:25,798 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 01:14:25,803 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 01:14:25,804 INFO L85 PathProgramCache]: Analyzing trace with hash -588951690, now seen corresponding path program 1 times [2024-11-22 01:14:25,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 01:14:25,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [915724067] [2024-11-22 01:14:25,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:14:25,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 01:14:25,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:14:25,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 01:14:25,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 01:14:25,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [915724067] [2024-11-22 01:14:25,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [915724067] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 01:14:25,978 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 01:14:25,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-22 01:14:25,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099637144] [2024-11-22 01:14:25,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 01:14:25,986 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-22 01:14:25,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 01:14:26,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-22 01:14:26,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-22 01:14:26,016 INFO L87 Difference]: Start difference. First operand has 27 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 14 states have internal predecessors, (19), 11 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 01:14:26,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 01:14:26,034 INFO L93 Difference]: Finished difference Result 51 states and 89 transitions. [2024-11-22 01:14:26,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-22 01:14:26,036 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2024-11-22 01:14:26,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 01:14:26,043 INFO L225 Difference]: With dead ends: 51 [2024-11-22 01:14:26,044 INFO L226 Difference]: Without dead ends: 23 [2024-11-22 01:14:26,047 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-22 01:14:26,051 INFO L432 NwaCegarLoop]: 37 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 01:14:26,052 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 01:14:26,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2024-11-22 01:14:26,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2024-11-22 01:14:26,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 10 states have (on average 1.2) internal successors, (12), 11 states have internal predecessors, (12), 11 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-22 01:14:26,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 33 transitions. [2024-11-22 01:14:26,083 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 33 transitions. Word has length 9 [2024-11-22 01:14:26,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 01:14:26,084 INFO L471 AbstractCegarLoop]: Abstraction has 23 states and 33 transitions. [2024-11-22 01:14:26,084 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 01:14:26,084 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 33 transitions. [2024-11-22 01:14:26,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-22 01:14:26,085 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 01:14:26,085 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 01:14:26,086 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-22 01:14:26,086 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 01:14:26,087 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 01:14:26,087 INFO L85 PathProgramCache]: Analyzing trace with hash 1187604804, now seen corresponding path program 1 times [2024-11-22 01:14:26,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 01:14:26,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [610971572] [2024-11-22 01:14:26,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:14:26,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 01:14:26,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:14:26,321 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 01:14:26,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 01:14:26,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [610971572] [2024-11-22 01:14:26,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [610971572] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 01:14:26,322 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 01:14:26,322 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 01:14:26,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404461596] [2024-11-22 01:14:26,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 01:14:26,323 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 01:14:26,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 01:14:26,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 01:14:26,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-22 01:14:26,325 INFO L87 Difference]: Start difference. First operand 23 states and 33 transitions. Second operand has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 01:14:26,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 01:14:26,428 INFO L93 Difference]: Finished difference Result 29 states and 38 transitions. [2024-11-22 01:14:26,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 01:14:26,429 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2024-11-22 01:14:26,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 01:14:26,429 INFO L225 Difference]: With dead ends: 29 [2024-11-22 01:14:26,430 INFO L226 Difference]: Without dead ends: 27 [2024-11-22 01:14:26,430 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-22 01:14:26,431 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 4 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 01:14:26,432 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 86 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 01:14:26,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2024-11-22 01:14:26,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2024-11-22 01:14:26,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 14 states have internal predecessors, (15), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-22 01:14:26,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 36 transitions. [2024-11-22 01:14:26,471 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 36 transitions. Word has length 9 [2024-11-22 01:14:26,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 01:14:26,471 INFO L471 AbstractCegarLoop]: Abstraction has 27 states and 36 transitions. [2024-11-22 01:14:26,471 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 01:14:26,472 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 36 transitions. [2024-11-22 01:14:26,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-22 01:14:26,472 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 01:14:26,472 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 01:14:26,472 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-22 01:14:26,473 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 01:14:26,474 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 01:14:26,478 INFO L85 PathProgramCache]: Analyzing trace with hash 1137950087, now seen corresponding path program 1 times [2024-11-22 01:14:26,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 01:14:26,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [107191612] [2024-11-22 01:14:26,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:14:26,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 01:14:26,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-22 01:14:26,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1537207580] [2024-11-22 01:14:26,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:14:26,518 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 01:14:26,518 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 01:14:26,521 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) [2024-11-22 01:14:26,522 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-22 01:14:26,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:14:26,603 INFO L255 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-22 01:14:26,608 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 01:14:26,707 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 01:14:26,707 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 01:14:26,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 01:14:26,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [107191612] [2024-11-22 01:14:26,708 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-22 01:14:26,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1537207580] [2024-11-22 01:14:26,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1537207580] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 01:14:26,709 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 01:14:26,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 01:14:26,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798268788] [2024-11-22 01:14:26,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 01:14:26,714 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 01:14:26,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 01:14:26,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 01:14:26,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-22 01:14:26,715 INFO L87 Difference]: Start difference. First operand 27 states and 36 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-22 01:14:26,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 01:14:26,801 INFO L93 Difference]: Finished difference Result 46 states and 65 transitions. [2024-11-22 01:14:26,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 01:14:26,805 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2024-11-22 01:14:26,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 01:14:26,807 INFO L225 Difference]: With dead ends: 46 [2024-11-22 01:14:26,807 INFO L226 Difference]: Without dead ends: 44 [2024-11-22 01:14:26,807 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-22 01:14:26,808 INFO L432 NwaCegarLoop]: 31 mSDtfsCounter, 4 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 01:14:26,809 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 107 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 01:14:26,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2024-11-22 01:14:26,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 34. [2024-11-22 01:14:26,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 17 states have (on average 1.1176470588235294) internal successors, (19), 19 states have internal predecessors, (19), 13 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (12), 11 states have call predecessors, (12), 12 states have call successors, (12) [2024-11-22 01:14:26,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 44 transitions. [2024-11-22 01:14:26,833 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 44 transitions. Word has length 14 [2024-11-22 01:14:26,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 01:14:26,834 INFO L471 AbstractCegarLoop]: Abstraction has 34 states and 44 transitions. [2024-11-22 01:14:26,834 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-22 01:14:26,834 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 44 transitions. [2024-11-22 01:14:26,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-22 01:14:26,835 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 01:14:26,835 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 01:14:26,843 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-22 01:14:27,036 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 01:14:27,036 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 01:14:27,037 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 01:14:27,037 INFO L85 PathProgramCache]: Analyzing trace with hash -1500531996, now seen corresponding path program 1 times [2024-11-22 01:14:27,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 01:14:27,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [519101223] [2024-11-22 01:14:27,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:14:27,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 01:14:27,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-22 01:14:27,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1442358839] [2024-11-22 01:14:27,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:14:27,075 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 01:14:27,075 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 01:14:27,078 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) [2024-11-22 01:14:27,082 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-22 01:14:27,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:14:27,128 INFO L255 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-22 01:14:27,130 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 01:14:27,176 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-22 01:14:27,178 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 01:14:27,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 01:14:27,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [519101223] [2024-11-22 01:14:27,178 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-22 01:14:27,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1442358839] [2024-11-22 01:14:27,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1442358839] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 01:14:27,178 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 01:14:27,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 01:14:27,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596818096] [2024-11-22 01:14:27,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 01:14:27,179 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 01:14:27,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 01:14:27,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 01:14:27,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-22 01:14:27,180 INFO L87 Difference]: Start difference. First operand 34 states and 44 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-22 01:14:27,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 01:14:27,252 INFO L93 Difference]: Finished difference Result 50 states and 68 transitions. [2024-11-22 01:14:27,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 01:14:27,255 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 19 [2024-11-22 01:14:27,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 01:14:27,256 INFO L225 Difference]: With dead ends: 50 [2024-11-22 01:14:27,257 INFO L226 Difference]: Without dead ends: 48 [2024-11-22 01:14:27,257 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-22 01:14:27,261 INFO L432 NwaCegarLoop]: 30 mSDtfsCounter, 4 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 01:14:27,262 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 104 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 01:14:27,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2024-11-22 01:14:27,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 44. [2024-11-22 01:14:27,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 21 states have (on average 1.1428571428571428) internal successors, (24), 23 states have internal predecessors, (24), 18 states have call successors, (18), 4 states have call predecessors, (18), 4 states have return successors, (17), 16 states have call predecessors, (17), 17 states have call successors, (17) [2024-11-22 01:14:27,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 59 transitions. [2024-11-22 01:14:27,280 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 59 transitions. Word has length 19 [2024-11-22 01:14:27,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 01:14:27,280 INFO L471 AbstractCegarLoop]: Abstraction has 44 states and 59 transitions. [2024-11-22 01:14:27,281 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-22 01:14:27,281 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 59 transitions. [2024-11-22 01:14:27,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-22 01:14:27,281 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 01:14:27,282 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 01:14:27,290 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-22 01:14:27,482 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2024-11-22 01:14:27,483 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 01:14:27,484 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 01:14:27,484 INFO L85 PathProgramCache]: Analyzing trace with hash 1926539111, now seen corresponding path program 1 times [2024-11-22 01:14:27,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 01:14:27,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773183903] [2024-11-22 01:14:27,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:14:27,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 01:14:27,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-22 01:14:27,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [925337762] [2024-11-22 01:14:27,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:14:27,505 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 01:14:27,505 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 01:14:27,507 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) [2024-11-22 01:14:27,509 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-22 01:14:27,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:14:27,551 INFO L255 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-22 01:14:27,553 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 01:14:27,642 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-22 01:14:27,646 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 01:14:27,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 01:14:27,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773183903] [2024-11-22 01:14:27,647 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-22 01:14:27,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [925337762] [2024-11-22 01:14:27,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [925337762] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 01:14:27,647 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 01:14:27,647 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 01:14:27,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279076029] [2024-11-22 01:14:27,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 01:14:27,648 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 01:14:27,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 01:14:27,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 01:14:27,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-22 01:14:27,649 INFO L87 Difference]: Start difference. First operand 44 states and 59 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 1 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) [2024-11-22 01:14:27,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 01:14:27,745 INFO L93 Difference]: Finished difference Result 58 states and 74 transitions. [2024-11-22 01:14:27,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 01:14:27,745 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 1 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 24 [2024-11-22 01:14:27,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 01:14:27,746 INFO L225 Difference]: With dead ends: 58 [2024-11-22 01:14:27,746 INFO L226 Difference]: Without dead ends: 46 [2024-11-22 01:14:27,749 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-22 01:14:27,749 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 4 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 01:14:27,750 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 96 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 01:14:27,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2024-11-22 01:14:27,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2024-11-22 01:14:27,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 24 states have (on average 1.0833333333333333) internal successors, (26), 25 states have internal predecessors, (26), 16 states have call successors, (16), 5 states have call predecessors, (16), 5 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2024-11-22 01:14:27,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 57 transitions. [2024-11-22 01:14:27,761 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 57 transitions. Word has length 24 [2024-11-22 01:14:27,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 01:14:27,761 INFO L471 AbstractCegarLoop]: Abstraction has 46 states and 57 transitions. [2024-11-22 01:14:27,762 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 1 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) [2024-11-22 01:14:27,762 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 57 transitions. [2024-11-22 01:14:27,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-11-22 01:14:27,763 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 01:14:27,763 INFO L215 NwaCegarLoop]: trace histogram [7, 6, 6, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 01:14:27,771 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-22 01:14:27,967 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 01:14:27,968 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 01:14:27,968 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 01:14:27,968 INFO L85 PathProgramCache]: Analyzing trace with hash -492592860, now seen corresponding path program 1 times [2024-11-22 01:14:27,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 01:14:27,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413439269] [2024-11-22 01:14:27,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:14:27,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 01:14:28,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-22 01:14:28,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1338878500] [2024-11-22 01:14:28,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:14:28,015 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 01:14:28,015 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 01:14:28,023 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) [2024-11-22 01:14:28,028 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-22 01:14:28,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:14:28,083 INFO L255 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-22 01:14:28,085 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 01:14:28,244 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 11 proven. 19 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-22 01:14:28,244 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 01:14:28,461 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 13 proven. 17 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-22 01:14:28,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 01:14:28,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413439269] [2024-11-22 01:14:28,462 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-22 01:14:28,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1338878500] [2024-11-22 01:14:28,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1338878500] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 01:14:28,463 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-22 01:14:28,463 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2024-11-22 01:14:28,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035412304] [2024-11-22 01:14:28,464 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-22 01:14:28,464 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-22 01:14:28,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 01:14:28,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-22 01:14:28,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-11-22 01:14:28,466 INFO L87 Difference]: Start difference. First operand 46 states and 57 transitions. Second operand has 13 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 11 states have internal predecessors, (24), 5 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (12), 4 states have call predecessors, (12), 5 states have call successors, (12) [2024-11-22 01:14:28,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 01:14:28,754 INFO L93 Difference]: Finished difference Result 69 states and 89 transitions. [2024-11-22 01:14:28,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-22 01:14:28,756 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 11 states have internal predecessors, (24), 5 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (12), 4 states have call predecessors, (12), 5 states have call successors, (12) Word has length 41 [2024-11-22 01:14:28,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 01:14:28,757 INFO L225 Difference]: With dead ends: 69 [2024-11-22 01:14:28,758 INFO L226 Difference]: Without dead ends: 67 [2024-11-22 01:14:28,759 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2024-11-22 01:14:28,760 INFO L432 NwaCegarLoop]: 24 mSDtfsCounter, 10 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 176 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 153 SdHoareTripleChecker+Invalid, 229 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-22 01:14:28,760 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 153 Invalid, 229 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 176 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-22 01:14:28,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2024-11-22 01:14:28,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 54. [2024-11-22 01:14:28,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 30 states have (on average 1.0666666666666667) internal successors, (32), 31 states have internal predecessors, (32), 16 states have call successors, (16), 7 states have call predecessors, (16), 7 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2024-11-22 01:14:28,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 63 transitions. [2024-11-22 01:14:28,788 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 63 transitions. Word has length 41 [2024-11-22 01:14:28,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 01:14:28,789 INFO L471 AbstractCegarLoop]: Abstraction has 54 states and 63 transitions. [2024-11-22 01:14:28,789 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 11 states have internal predecessors, (24), 5 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (12), 4 states have call predecessors, (12), 5 states have call successors, (12) [2024-11-22 01:14:28,789 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 63 transitions. [2024-11-22 01:14:28,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-11-22 01:14:28,790 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 01:14:28,790 INFO L215 NwaCegarLoop]: trace histogram [8, 7, 7, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 01:14:28,799 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-22 01:14:28,991 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 01:14:28,991 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 01:14:28,991 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 01:14:28,992 INFO L85 PathProgramCache]: Analyzing trace with hash 1495173479, now seen corresponding path program 2 times [2024-11-22 01:14:28,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 01:14:28,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1150009250] [2024-11-22 01:14:28,992 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 01:14:28,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 01:14:29,019 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 01:14:29,019 INFO L228 tOrderPrioritization]: Conjunction of SSA is unknown [2024-11-22 01:14:29,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [528628699] [2024-11-22 01:14:29,021 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 01:14:29,021 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 01:14:29,022 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 01:14:29,024 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) [2024-11-22 01:14:29,025 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-22 01:14:29,075 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 01:14:29,076 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 01:14:29,077 INFO L255 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-22 01:14:29,080 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 01:14:29,249 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 13 proven. 23 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2024-11-22 01:14:29,250 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 01:14:29,415 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 13 proven. 23 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2024-11-22 01:14:29,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 01:14:29,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1150009250] [2024-11-22 01:14:29,416 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-22 01:14:29,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [528628699] [2024-11-22 01:14:29,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [528628699] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 01:14:29,417 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-22 01:14:29,417 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2024-11-22 01:14:29,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627038836] [2024-11-22 01:14:29,418 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-22 01:14:29,418 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-22 01:14:29,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 01:14:29,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-22 01:14:29,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-11-22 01:14:29,421 INFO L87 Difference]: Start difference. First operand 54 states and 63 transitions. Second operand has 13 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 11 states have internal predecessors, (24), 5 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (14), 4 states have call predecessors, (14), 5 states have call successors, (14) [2024-11-22 01:14:33,822 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.16s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-22 01:14:33,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 01:14:33,871 INFO L93 Difference]: Finished difference Result 84 states and 103 transitions. [2024-11-22 01:14:33,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-22 01:14:33,874 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 11 states have internal predecessors, (24), 5 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (14), 4 states have call predecessors, (14), 5 states have call successors, (14) Word has length 46 [2024-11-22 01:14:33,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 01:14:33,876 INFO L225 Difference]: With dead ends: 84 [2024-11-22 01:14:33,876 INFO L226 Difference]: Without dead ends: 82 [2024-11-22 01:14:33,877 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=61, Invalid=211, Unknown=0, NotChecked=0, Total=272 [2024-11-22 01:14:33,879 INFO L432 NwaCegarLoop]: 24 mSDtfsCounter, 10 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 152 mSolverCounterSat, 53 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 152 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2024-11-22 01:14:33,879 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 128 Invalid, 206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 152 Invalid, 1 Unknown, 0 Unchecked, 4.4s Time] [2024-11-22 01:14:33,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2024-11-22 01:14:33,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 80. [2024-11-22 01:14:33,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 42 states have (on average 1.0714285714285714) internal successors, (45), 45 states have internal predecessors, (45), 27 states have call successors, (27), 10 states have call predecessors, (27), 10 states have return successors, (26), 24 states have call predecessors, (26), 26 states have call successors, (26) [2024-11-22 01:14:33,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 98 transitions. [2024-11-22 01:14:33,914 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 98 transitions. Word has length 46 [2024-11-22 01:14:33,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 01:14:33,915 INFO L471 AbstractCegarLoop]: Abstraction has 80 states and 98 transitions. [2024-11-22 01:14:33,915 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 11 states have internal predecessors, (24), 5 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (14), 4 states have call predecessors, (14), 5 states have call successors, (14) [2024-11-22 01:14:33,915 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 98 transitions. [2024-11-22 01:14:33,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-11-22 01:14:33,917 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 01:14:33,917 INFO L215 NwaCegarLoop]: trace histogram [9, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 01:14:33,925 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-22 01:14:34,117 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 01:14:34,118 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 01:14:34,118 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 01:14:34,118 INFO L85 PathProgramCache]: Analyzing trace with hash 900098756, now seen corresponding path program 3 times [2024-11-22 01:14:34,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 01:14:34,118 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154555081] [2024-11-22 01:14:34,118 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-22 01:14:34,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 01:14:34,171 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2024-11-22 01:14:34,172 INFO L228 tOrderPrioritization]: Conjunction of SSA is unknown [2024-11-22 01:14:34,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [652617206] [2024-11-22 01:14:34,177 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-22 01:14:34,177 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 01:14:34,177 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 01:14:34,180 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) [2024-11-22 01:14:34,182 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-22 01:14:34,234 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-22 01:14:34,234 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 01:14:34,235 INFO L255 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-22 01:14:34,237 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 01:14:34,335 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 16 proven. 5 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-11-22 01:14:34,335 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 01:14:34,446 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 16 proven. 5 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-11-22 01:14:34,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 01:14:34,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [154555081] [2024-11-22 01:14:34,447 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-22 01:14:34,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [652617206] [2024-11-22 01:14:34,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [652617206] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 01:14:34,447 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-22 01:14:34,447 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2024-11-22 01:14:34,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947800959] [2024-11-22 01:14:34,447 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-22 01:14:34,448 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-22 01:14:34,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 01:14:34,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-22 01:14:34,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-11-22 01:14:34,449 INFO L87 Difference]: Start difference. First operand 80 states and 98 transitions. Second operand has 10 states, 10 states have (on average 1.9) internal successors, (19), 8 states have internal predecessors, (19), 4 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) [2024-11-22 01:14:34,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 01:14:34,672 INFO L93 Difference]: Finished difference Result 96 states and 112 transitions. [2024-11-22 01:14:34,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-22 01:14:34,673 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.9) internal successors, (19), 8 states have internal predecessors, (19), 4 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) Word has length 51 [2024-11-22 01:14:34,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 01:14:34,675 INFO L225 Difference]: With dead ends: 96 [2024-11-22 01:14:34,675 INFO L226 Difference]: Without dead ends: 84 [2024-11-22 01:14:34,675 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2024-11-22 01:14:34,676 INFO L432 NwaCegarLoop]: 38 mSDtfsCounter, 7 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 200 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-22 01:14:34,676 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 200 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-22 01:14:34,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2024-11-22 01:14:34,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 67. [2024-11-22 01:14:34,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 42 states have (on average 1.0476190476190477) internal successors, (44), 43 states have internal predecessors, (44), 13 states have call successors, (13), 11 states have call predecessors, (13), 11 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-11-22 01:14:34,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 69 transitions. [2024-11-22 01:14:34,699 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 69 transitions. Word has length 51 [2024-11-22 01:14:34,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 01:14:34,699 INFO L471 AbstractCegarLoop]: Abstraction has 67 states and 69 transitions. [2024-11-22 01:14:34,699 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 1.9) internal successors, (19), 8 states have internal predecessors, (19), 4 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) [2024-11-22 01:14:34,700 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 69 transitions. [2024-11-22 01:14:34,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-11-22 01:14:34,701 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 01:14:34,701 INFO L215 NwaCegarLoop]: trace histogram [12, 11, 11, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 01:14:34,709 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-22 01:14:34,905 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 01:14:34,906 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 01:14:34,906 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 01:14:34,906 INFO L85 PathProgramCache]: Analyzing trace with hash 1061977627, now seen corresponding path program 1 times [2024-11-22 01:14:34,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 01:14:34,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [304735414] [2024-11-22 01:14:34,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:14:34,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 01:14:34,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-22 01:14:34,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2022073453] [2024-11-22 01:14:34,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:14:34,944 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 01:14:34,948 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 01:14:34,949 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) [2024-11-22 01:14:34,953 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-22 01:14:35,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:14:35,008 INFO L255 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-22 01:14:35,011 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 01:14:35,162 INFO L134 CoverageAnalysis]: Checked inductivity of 249 backedges. 22 proven. 7 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-11-22 01:14:35,162 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 01:14:35,323 INFO L134 CoverageAnalysis]: Checked inductivity of 249 backedges. 22 proven. 7 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-11-22 01:14:35,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 01:14:35,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [304735414] [2024-11-22 01:14:35,324 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-22 01:14:35,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2022073453] [2024-11-22 01:14:35,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2022073453] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 01:14:35,324 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-22 01:14:35,324 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2024-11-22 01:14:35,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557556415] [2024-11-22 01:14:35,324 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-22 01:14:35,325 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-22 01:14:35,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 01:14:35,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-22 01:14:35,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-11-22 01:14:35,326 INFO L87 Difference]: Start difference. First operand 67 states and 69 transitions. Second operand has 12 states, 10 states have (on average 2.1) internal successors, (21), 10 states have internal predecessors, (21), 6 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (22), 6 states have call predecessors, (22), 6 states have call successors, (22) [2024-11-22 01:14:35,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 01:14:35,565 INFO L93 Difference]: Finished difference Result 97 states and 113 transitions. [2024-11-22 01:14:35,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-22 01:14:35,565 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 2.1) internal successors, (21), 10 states have internal predecessors, (21), 6 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (22), 6 states have call predecessors, (22), 6 states have call successors, (22) Word has length 67 [2024-11-22 01:14:35,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 01:14:35,569 INFO L225 Difference]: With dead ends: 97 [2024-11-22 01:14:35,571 INFO L226 Difference]: Without dead ends: 95 [2024-11-22 01:14:35,571 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2024-11-22 01:14:35,572 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 5 mSDsluCounter, 168 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 195 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-22 01:14:35,572 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 195 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-22 01:14:35,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2024-11-22 01:14:35,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 91. [2024-11-22 01:14:35,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 52 states have (on average 1.0769230769230769) internal successors, (56), 54 states have internal predecessors, (56), 25 states have call successors, (25), 13 states have call predecessors, (25), 13 states have return successors, (24), 23 states have call predecessors, (24), 24 states have call successors, (24) [2024-11-22 01:14:35,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 105 transitions. [2024-11-22 01:14:35,621 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 105 transitions. Word has length 67 [2024-11-22 01:14:35,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 01:14:35,622 INFO L471 AbstractCegarLoop]: Abstraction has 91 states and 105 transitions. [2024-11-22 01:14:35,622 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 2.1) internal successors, (21), 10 states have internal predecessors, (21), 6 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (22), 6 states have call predecessors, (22), 6 states have call successors, (22) [2024-11-22 01:14:35,622 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 105 transitions. [2024-11-22 01:14:35,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-11-22 01:14:35,623 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 01:14:35,623 INFO L215 NwaCegarLoop]: trace histogram [13, 12, 12, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 01:14:35,633 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-22 01:14:35,823 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 01:14:35,824 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 01:14:35,825 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 01:14:35,825 INFO L85 PathProgramCache]: Analyzing trace with hash -1246911088, now seen corresponding path program 1 times [2024-11-22 01:14:35,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 01:14:35,825 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138305980] [2024-11-22 01:14:35,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:14:35,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 01:14:35,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-22 01:14:35,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1692387589] [2024-11-22 01:14:35,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:14:35,855 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 01:14:35,855 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 01:14:35,860 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) [2024-11-22 01:14:35,863 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-22 01:14:35,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:14:35,917 INFO L255 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-22 01:14:35,922 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 01:14:36,100 INFO L134 CoverageAnalysis]: Checked inductivity of 295 backedges. 24 proven. 7 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-11-22 01:14:36,101 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 01:14:36,296 INFO L134 CoverageAnalysis]: Checked inductivity of 295 backedges. 24 proven. 7 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-11-22 01:14:36,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 01:14:36,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138305980] [2024-11-22 01:14:36,297 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-22 01:14:36,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1692387589] [2024-11-22 01:14:36,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1692387589] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 01:14:36,297 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-22 01:14:36,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2024-11-22 01:14:36,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167604301] [2024-11-22 01:14:36,297 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-22 01:14:36,298 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-22 01:14:36,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 01:14:36,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-22 01:14:36,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-11-22 01:14:36,298 INFO L87 Difference]: Start difference. First operand 91 states and 105 transitions. Second operand has 12 states, 10 states have (on average 2.1) internal successors, (21), 10 states have internal predecessors, (21), 6 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (24), 6 states have call predecessors, (24), 6 states have call successors, (24) [2024-11-22 01:14:36,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 01:14:36,603 INFO L93 Difference]: Finished difference Result 127 states and 146 transitions. [2024-11-22 01:14:36,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-22 01:14:36,603 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 2.1) internal successors, (21), 10 states have internal predecessors, (21), 6 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (24), 6 states have call predecessors, (24), 6 states have call successors, (24) Word has length 72 [2024-11-22 01:14:36,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 01:14:36,605 INFO L225 Difference]: With dead ends: 127 [2024-11-22 01:14:36,605 INFO L226 Difference]: Without dead ends: 106 [2024-11-22 01:14:36,605 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=64, Invalid=208, Unknown=0, NotChecked=0, Total=272 [2024-11-22 01:14:36,606 INFO L432 NwaCegarLoop]: 24 mSDtfsCounter, 9 mSDsluCounter, 163 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 187 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 01:14:36,606 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 187 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 01:14:36,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2024-11-22 01:14:36,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 106. [2024-11-22 01:14:36,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 60 states have (on average 1.05) internal successors, (63), 62 states have internal predecessors, (63), 30 states have call successors, (30), 15 states have call predecessors, (30), 15 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2024-11-22 01:14:36,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 121 transitions. [2024-11-22 01:14:36,641 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 121 transitions. Word has length 72 [2024-11-22 01:14:36,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 01:14:36,641 INFO L471 AbstractCegarLoop]: Abstraction has 106 states and 121 transitions. [2024-11-22 01:14:36,641 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 2.1) internal successors, (21), 10 states have internal predecessors, (21), 6 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (24), 6 states have call predecessors, (24), 6 states have call successors, (24) [2024-11-22 01:14:36,641 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 121 transitions. [2024-11-22 01:14:36,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2024-11-22 01:14:36,643 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 01:14:36,643 INFO L215 NwaCegarLoop]: trace histogram [22, 21, 21, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 01:14:36,652 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-22 01:14:36,847 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,SelfDestructingSolverStorable9 [2024-11-22 01:14:36,848 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 01:14:36,848 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 01:14:36,848 INFO L85 PathProgramCache]: Analyzing trace with hash -1837317061, now seen corresponding path program 2 times [2024-11-22 01:14:36,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 01:14:36,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [766826585] [2024-11-22 01:14:36,849 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 01:14:36,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 01:14:36,885 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 01:14:36,885 INFO L228 tOrderPrioritization]: Conjunction of SSA is unknown [2024-11-22 01:14:36,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1656580526] [2024-11-22 01:14:36,887 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 01:14:36,887 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 01:14:36,887 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 01:14:36,890 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) [2024-11-22 01:14:36,891 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-22 01:14:36,961 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 01:14:36,961 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 01:14:36,963 INFO L255 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-11-22 01:14:36,966 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 01:14:37,173 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 86 proven. 58 refuted. 0 times theorem prover too weak. 780 trivial. 0 not checked. [2024-11-22 01:14:37,173 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 01:14:37,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 01:14:37,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [766826585] [2024-11-22 01:14:37,254 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-22 01:14:37,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1656580526] [2024-11-22 01:14:37,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1656580526] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 01:14:37,255 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-22 01:14:37,255 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2024-11-22 01:14:37,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658258485] [2024-11-22 01:14:37,255 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-22 01:14:37,256 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-22 01:14:37,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 01:14:37,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-22 01:14:37,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2024-11-22 01:14:37,257 INFO L87 Difference]: Start difference. First operand 106 states and 121 transitions. Second operand has 12 states, 10 states have (on average 2.1) internal successors, (21), 10 states have internal predecessors, (21), 6 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 5 states have call predecessors, (21), 5 states have call successors, (21) [2024-11-22 01:14:37,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 01:14:37,547 INFO L93 Difference]: Finished difference Result 116 states and 129 transitions. [2024-11-22 01:14:37,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-22 01:14:37,547 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 2.1) internal successors, (21), 10 states have internal predecessors, (21), 6 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 5 states have call predecessors, (21), 5 states have call successors, (21) Word has length 121 [2024-11-22 01:14:37,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 01:14:37,549 INFO L225 Difference]: With dead ends: 116 [2024-11-22 01:14:37,549 INFO L226 Difference]: Without dead ends: 108 [2024-11-22 01:14:37,549 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2024-11-22 01:14:37,550 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 3 mSDsluCounter, 244 mSDsCounter, 0 mSdLazyCounter, 379 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 277 SdHoareTripleChecker+Invalid, 384 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 379 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-22 01:14:37,550 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 277 Invalid, 384 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 379 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-22 01:14:37,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2024-11-22 01:14:37,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 108. [2024-11-22 01:14:37,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 63 states have (on average 1.0317460317460319) internal successors, (65), 64 states have internal predecessors, (65), 28 states have call successors, (28), 16 states have call predecessors, (28), 16 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2024-11-22 01:14:37,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 120 transitions. [2024-11-22 01:14:37,582 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 120 transitions. Word has length 121 [2024-11-22 01:14:37,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 01:14:37,583 INFO L471 AbstractCegarLoop]: Abstraction has 108 states and 120 transitions. [2024-11-22 01:14:37,583 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 2.1) internal successors, (21), 10 states have internal predecessors, (21), 6 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 5 states have call predecessors, (21), 5 states have call successors, (21) [2024-11-22 01:14:37,583 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 120 transitions. [2024-11-22 01:14:37,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2024-11-22 01:14:37,584 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 01:14:37,584 INFO L215 NwaCegarLoop]: trace histogram [27, 26, 26, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 01:14:37,593 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-22 01:14:37,788 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 01:14:37,789 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 01:14:37,789 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 01:14:37,789 INFO L85 PathProgramCache]: Analyzing trace with hash -1728706434, now seen corresponding path program 3 times [2024-11-22 01:14:37,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 01:14:37,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [948218291] [2024-11-22 01:14:37,789 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-22 01:14:37,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 01:14:37,922 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 17 check-sat command(s) [2024-11-22 01:14:37,922 INFO L228 tOrderPrioritization]: Conjunction of SSA is unknown [2024-11-22 01:14:37,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [512274142] [2024-11-22 01:14:37,924 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-22 01:14:37,924 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 01:14:37,924 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 01:14:37,927 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 01:14:37,930 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-22 01:14:37,981 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-22 01:14:37,981 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 01:14:37,983 INFO L255 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-22 01:14:37,985 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 01:14:38,073 INFO L134 CoverageAnalysis]: Checked inductivity of 1422 backedges. 139 proven. 16 refuted. 0 times theorem prover too weak. 1267 trivial. 0 not checked. [2024-11-22 01:14:38,073 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 01:14:38,250 INFO L134 CoverageAnalysis]: Checked inductivity of 1422 backedges. 139 proven. 16 refuted. 0 times theorem prover too weak. 1267 trivial. 0 not checked. [2024-11-22 01:14:38,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 01:14:38,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [948218291] [2024-11-22 01:14:38,251 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-22 01:14:38,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [512274142] [2024-11-22 01:14:38,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [512274142] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 01:14:38,251 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-22 01:14:38,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 12 [2024-11-22 01:14:38,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903026093] [2024-11-22 01:14:38,251 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-22 01:14:38,251 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-22 01:14:38,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 01:14:38,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-22 01:14:38,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-11-22 01:14:38,252 INFO L87 Difference]: Start difference. First operand 108 states and 120 transitions. Second operand has 12 states, 11 states have (on average 2.090909090909091) internal successors, (23), 9 states have internal predecessors, (23), 5 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (16), 4 states have call predecessors, (16), 5 states have call successors, (16) [2024-11-22 01:14:38,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 01:14:38,407 INFO L93 Difference]: Finished difference Result 114 states and 125 transitions. [2024-11-22 01:14:38,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-22 01:14:38,407 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.090909090909091) internal successors, (23), 9 states have internal predecessors, (23), 5 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (16), 4 states have call predecessors, (16), 5 states have call successors, (16) Word has length 148 [2024-11-22 01:14:38,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 01:14:38,408 INFO L225 Difference]: With dead ends: 114 [2024-11-22 01:14:38,408 INFO L226 Difference]: Without dead ends: 110 [2024-11-22 01:14:38,409 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 296 GetRequests, 282 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2024-11-22 01:14:38,409 INFO L432 NwaCegarLoop]: 26 mSDtfsCounter, 7 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 01:14:38,409 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 139 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 01:14:38,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2024-11-22 01:14:38,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 110. [2024-11-22 01:14:38,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 65 states have (on average 1.0153846153846153) internal successors, (66), 65 states have internal predecessors, (66), 28 states have call successors, (28), 17 states have call predecessors, (28), 16 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2024-11-22 01:14:38,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 121 transitions. [2024-11-22 01:14:38,440 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 121 transitions. Word has length 148 [2024-11-22 01:14:38,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 01:14:38,441 INFO L471 AbstractCegarLoop]: Abstraction has 110 states and 121 transitions. [2024-11-22 01:14:38,441 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.090909090909091) internal successors, (23), 9 states have internal predecessors, (23), 5 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (16), 4 states have call predecessors, (16), 5 states have call successors, (16) [2024-11-22 01:14:38,441 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 121 transitions. [2024-11-22 01:14:38,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2024-11-22 01:14:38,442 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 01:14:38,443 INFO L215 NwaCegarLoop]: trace histogram [28, 27, 27, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 01:14:38,451 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-22 01:14:38,643 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-22 01:14:38,643 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 01:14:38,644 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 01:14:38,644 INFO L85 PathProgramCache]: Analyzing trace with hash 593109261, now seen corresponding path program 2 times [2024-11-22 01:14:38,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 01:14:38,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960930096] [2024-11-22 01:14:38,644 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 01:14:38,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 01:14:38,680 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 01:14:38,681 INFO L228 tOrderPrioritization]: Conjunction of SSA is unknown [2024-11-22 01:14:38,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1055537840] [2024-11-22 01:14:38,685 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 01:14:38,686 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 01:14:38,686 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 01:14:38,688 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 01:14:38,689 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-22 01:14:38,773 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 01:14:38,773 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 01:14:38,775 INFO L255 TraceCheckSpWp]: Trace formula consists of 330 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-11-22 01:14:38,778 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 01:14:39,097 INFO L134 CoverageAnalysis]: Checked inductivity of 1528 backedges. 113 proven. 89 refuted. 0 times theorem prover too weak. 1326 trivial. 0 not checked. [2024-11-22 01:14:39,098 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 01:14:43,661 INFO L134 CoverageAnalysis]: Checked inductivity of 1528 backedges. 113 proven. 47 refuted. 0 times theorem prover too weak. 1368 trivial. 0 not checked. [2024-11-22 01:14:43,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 01:14:43,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [960930096] [2024-11-22 01:14:43,662 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-22 01:14:43,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1055537840] [2024-11-22 01:14:43,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1055537840] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 01:14:43,662 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-22 01:14:43,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9] total 18 [2024-11-22 01:14:43,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413555530] [2024-11-22 01:14:43,663 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-22 01:14:43,663 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-22 01:14:43,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 01:14:43,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-22 01:14:43,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=251, Unknown=0, NotChecked=0, Total=306 [2024-11-22 01:14:43,666 INFO L87 Difference]: Start difference. First operand 110 states and 121 transitions. Second operand has 18 states, 16 states have (on average 2.0625) internal successors, (33), 16 states have internal predecessors, (33), 10 states have call successors, (41), 3 states have call predecessors, (41), 2 states have return successors, (39), 9 states have call predecessors, (39), 10 states have call successors, (39) [2024-11-22 01:14:44,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 01:14:44,131 INFO L93 Difference]: Finished difference Result 138 states and 154 transitions. [2024-11-22 01:14:44,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-22 01:14:44,132 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 16 states have (on average 2.0625) internal successors, (33), 16 states have internal predecessors, (33), 10 states have call successors, (41), 3 states have call predecessors, (41), 2 states have return successors, (39), 9 states have call predecessors, (39), 10 states have call successors, (39) Word has length 153 [2024-11-22 01:14:44,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 01:14:44,132 INFO L225 Difference]: With dead ends: 138 [2024-11-22 01:14:44,132 INFO L226 Difference]: Without dead ends: 0 [2024-11-22 01:14:44,134 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 312 GetRequests, 285 SyntacticMatches, 3 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=124, Invalid=526, Unknown=0, NotChecked=0, Total=650 [2024-11-22 01:14:44,136 INFO L432 NwaCegarLoop]: 38 mSDtfsCounter, 9 mSDsluCounter, 274 mSDsCounter, 0 mSdLazyCounter, 406 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 312 SdHoareTripleChecker+Invalid, 432 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 406 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-22 01:14:44,136 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 312 Invalid, 432 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 406 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-22 01:14:44,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-22 01:14:44,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-22 01:14:44,137 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) [2024-11-22 01:14:44,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-22 01:14:44,137 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 153 [2024-11-22 01:14:44,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 01:14:44,139 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-22 01:14:44,139 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 16 states have (on average 2.0625) internal successors, (33), 16 states have internal predecessors, (33), 10 states have call successors, (41), 3 states have call predecessors, (41), 2 states have return successors, (39), 9 states have call predecessors, (39), 10 states have call successors, (39) [2024-11-22 01:14:44,139 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-22 01:14:44,140 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-22 01:14:44,142 INFO L782 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-22 01:14:44,151 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-11-22 01:14:44,346 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-22 01:14:44,349 INFO L407 BasicCegarLoop]: Path program histogram: [3, 3, 2, 1, 1, 1, 1, 1] [2024-11-22 01:14:44,351 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-11-22 01:14:54,405 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-22 01:14:54,427 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 01:14:54 BoogieIcfgContainer [2024-11-22 01:14:54,428 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-22 01:14:54,428 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-22 01:14:54,428 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-22 01:14:54,428 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-22 01:14:54,429 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:14:25" (3/4) ... [2024-11-22 01:14:54,432 INFO L142 WitnessPrinter]: Generating witness for correct program [2024-11-22 01:14:54,436 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2024-11-22 01:14:54,440 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2024-11-22 01:14:54,441 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2024-11-22 01:14:54,441 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-11-22 01:14:54,441 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-22 01:14:54,520 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-11-22 01:14:54,523 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-11-22 01:14:54,523 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-22 01:14:54,524 INFO L158 Benchmark]: Toolchain (without parser) took 29582.19ms. Allocated memory was 167.8MB in the beginning and 241.2MB in the end (delta: 73.4MB). Free memory was 112.7MB in the beginning and 117.1MB in the end (delta: -4.4MB). Peak memory consumption was 69.4MB. Max. memory is 16.1GB. [2024-11-22 01:14:54,524 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 167.8MB. Free memory is still 134.9MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-22 01:14:54,524 INFO L158 Benchmark]: CACSL2BoogieTranslator took 294.88ms. Allocated memory is still 167.8MB. Free memory was 112.3MB in the beginning and 99.6MB in the end (delta: 12.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-11-22 01:14:54,524 INFO L158 Benchmark]: Boogie Procedure Inliner took 31.53ms. Allocated memory is still 167.8MB. Free memory was 99.6MB in the beginning and 97.6MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-22 01:14:54,525 INFO L158 Benchmark]: Boogie Preprocessor took 39.78ms. Allocated memory is still 167.8MB. Free memory was 97.6MB in the beginning and 95.9MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-22 01:14:54,525 INFO L158 Benchmark]: RCFGBuilder took 363.55ms. Allocated memory is still 167.8MB. Free memory was 95.9MB in the beginning and 83.8MB in the end (delta: 12.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-11-22 01:14:54,525 INFO L158 Benchmark]: TraceAbstraction took 28748.52ms. Allocated memory was 167.8MB in the beginning and 241.2MB in the end (delta: 73.4MB). Free memory was 83.3MB in the beginning and 122.3MB in the end (delta: -39.0MB). Peak memory consumption was 86.8MB. Max. memory is 16.1GB. [2024-11-22 01:14:54,525 INFO L158 Benchmark]: Witness Printer took 94.97ms. Allocated memory is still 241.2MB. Free memory was 122.3MB in the beginning and 117.1MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-11-22 01:14:54,527 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 167.8MB. Free memory is still 134.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 294.88ms. Allocated memory is still 167.8MB. Free memory was 112.3MB in the beginning and 99.6MB in the end (delta: 12.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 31.53ms. Allocated memory is still 167.8MB. Free memory was 99.6MB in the beginning and 97.6MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 39.78ms. Allocated memory is still 167.8MB. Free memory was 97.6MB in the beginning and 95.9MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 363.55ms. Allocated memory is still 167.8MB. Free memory was 95.9MB in the beginning and 83.8MB in the end (delta: 12.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 28748.52ms. Allocated memory was 167.8MB in the beginning and 241.2MB in the end (delta: 73.4MB). Free memory was 83.3MB in the beginning and 122.3MB in the end (delta: -39.0MB). Peak memory consumption was 86.8MB. Max. memory is 16.1GB. * Witness Printer took 94.97ms. Allocated memory is still 241.2MB. Free memory was 122.3MB in the beginning and 117.1MB in the end (delta: 5.2MB). 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 2 procedures, 27 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 18.6s, OverallIterations: 13, TraceHistogramMax: 28, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 6.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1 mSolverCounterUnknown, 119 SdHoareTripleChecker+Valid, 5.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 76 mSDsluCounter, 2021 SdHoareTripleChecker+Invalid, 5.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1635 mSDsCounter, 232 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1756 IncrementalHoareTripleChecker+Invalid, 1989 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 232 mSolverCounterUnsat, 386 mSDtfsCounter, 1756 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1360 GetRequests, 1223 SyntacticMatches, 5 SemanticMatches, 132 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 183 ImplicationChecksByTransitivity, 5.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=110occurred in iteration=12, InterpolantAutomatonStates: 104, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 13 MinimizatonAttempts, 50 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 7.6s InterpolantComputationTime, 1530 NumberOfCodeBlocks, 1391 NumberOfCodeBlocksAsserted, 54 NumberOfCheckSat, 1332 ConstructedInterpolants, 0 QuantifiedInterpolants, 4770 SizeOfPredicates, 24 NumberOfNonLiveVariables, 1524 ConjunctsInSsa, 221 ConjunctsInUnsatCore, 20 InterpolantComputations, 5 PerfectInterpolantSequences, 8214/8560 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: 33]: Loop Invariant Derived loop invariant: (((((((3 * ((__int128) n * n)) + 7) + ((__int128) 9 * n)) == ((__int128) y + z)) && (y == ((((__int128) 3 * n) + (3 * ((__int128) n * n))) + 1))) && (((((__int128) y * z) + 6) + ((__int128) z * z)) == ((((__int128) z * 4) + ((__int128) x * 18)) + ((__int128) y * 24)))) && ((n < (a + 1)) || (((((__int128) 2 * y) + (6 * a)) + 10) == (((__int128) a * z) + ((__int128) 2 * z))))) - 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! [2024-11-22 01:14:54,553 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