./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-crafted/zero_sum_m3.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3061b6dc Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/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/array-crafted/zero_sum_m3.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 1743decb4413dd023f2c21969cafbefd9f03a99467b1795f9affedc42875deb2 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-18 09:13:46,340 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-18 09:13:46,415 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-18 09:13:46,423 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-18 09:13:46,424 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-18 09:13:46,459 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-18 09:13:46,460 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-18 09:13:46,460 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-18 09:13:46,461 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-18 09:13:46,462 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-18 09:13:46,462 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-18 09:13:46,463 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-18 09:13:46,464 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-18 09:13:46,467 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-18 09:13:46,468 INFO L153 SettingsManager]: * Use SBE=true [2024-11-18 09:13:46,468 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-18 09:13:46,468 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-18 09:13:46,469 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-18 09:13:46,469 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-18 09:13:46,469 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-18 09:13:46,469 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-18 09:13:46,471 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-18 09:13:46,471 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-18 09:13:46,471 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-18 09:13:46,472 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-18 09:13:46,472 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-18 09:13:46,472 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-18 09:13:46,472 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-18 09:13:46,473 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-18 09:13:46,473 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-18 09:13:46,474 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-18 09:13:46,474 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-18 09:13:46,474 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 09:13:46,475 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-18 09:13:46,475 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-18 09:13:46,476 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-18 09:13:46,476 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-18 09:13:46,476 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-18 09:13:46,476 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-18 09:13:46,476 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-18 09:13:46,477 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-18 09:13:46,477 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-18 09:13:46,477 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1743decb4413dd023f2c21969cafbefd9f03a99467b1795f9affedc42875deb2 [2024-11-18 09:13:46,732 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-18 09:13:46,758 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-18 09:13:46,761 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-18 09:13:46,762 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-18 09:13:46,763 INFO L274 PluginConnector]: CDTParser initialized [2024-11-18 09:13:46,764 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-crafted/zero_sum_m3.c [2024-11-18 09:13:48,287 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-18 09:13:48,492 INFO L384 CDTParser]: Found 1 translation units. [2024-11-18 09:13:48,494 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-crafted/zero_sum_m3.c [2024-11-18 09:13:48,502 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/841139e4b/6101565a55ed48ae940f7eee467fae3c/FLAG7de19de6a [2024-11-18 09:13:48,864 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/841139e4b/6101565a55ed48ae940f7eee467fae3c [2024-11-18 09:13:48,867 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-18 09:13:48,868 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-18 09:13:48,869 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-18 09:13:48,870 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-18 09:13:48,876 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-18 09:13:48,877 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 09:13:48" (1/1) ... [2024-11-18 09:13:48,878 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f25f424 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:13:48, skipping insertion in model container [2024-11-18 09:13:48,878 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 09:13:48" (1/1) ... [2024-11-18 09:13:48,899 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-18 09:13:49,125 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/array-crafted/zero_sum_m3.c[402,415] [2024-11-18 09:13:49,154 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 09:13:49,165 INFO L200 MainTranslator]: Completed pre-run [2024-11-18 09:13:49,178 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/array-crafted/zero_sum_m3.c[402,415] [2024-11-18 09:13:49,191 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 09:13:49,210 INFO L204 MainTranslator]: Completed translation [2024-11-18 09:13:49,210 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:13:49 WrapperNode [2024-11-18 09:13:49,214 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-18 09:13:49,215 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-18 09:13:49,215 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-18 09:13:49,215 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-18 09:13:49,221 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:13:49" (1/1) ... [2024-11-18 09:13:49,227 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:13:49" (1/1) ... [2024-11-18 09:13:49,245 INFO L138 Inliner]: procedures = 15, calls = 17, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 108 [2024-11-18 09:13:49,245 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-18 09:13:49,246 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-18 09:13:49,246 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-18 09:13:49,246 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-18 09:13:49,255 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:13:49" (1/1) ... [2024-11-18 09:13:49,255 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:13:49" (1/1) ... [2024-11-18 09:13:49,257 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:13:49" (1/1) ... [2024-11-18 09:13:49,269 INFO L175 MemorySlicer]: Split 9 memory accesses to 2 slices as follows [2, 7]. 78 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2024-11-18 09:13:49,269 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:13:49" (1/1) ... [2024-11-18 09:13:49,270 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:13:49" (1/1) ... [2024-11-18 09:13:49,276 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:13:49" (1/1) ... [2024-11-18 09:13:49,283 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:13:49" (1/1) ... [2024-11-18 09:13:49,284 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:13:49" (1/1) ... [2024-11-18 09:13:49,285 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:13:49" (1/1) ... [2024-11-18 09:13:49,289 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-18 09:13:49,290 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-18 09:13:49,291 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-18 09:13:49,291 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-18 09:13:49,292 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:13:49" (1/1) ... [2024-11-18 09:13:49,297 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 09:13:49,309 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:13:49,325 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) [2024-11-18 09:13:49,328 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 [2024-11-18 09:13:49,378 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-18 09:13:49,378 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-18 09:13:49,379 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-18 09:13:49,379 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-18 09:13:49,379 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-18 09:13:49,379 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-18 09:13:49,379 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-18 09:13:49,381 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-18 09:13:49,381 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-18 09:13:49,381 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-18 09:13:49,381 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-18 09:13:49,481 INFO L238 CfgBuilder]: Building ICFG [2024-11-18 09:13:49,483 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-18 09:13:49,709 INFO L? ?]: Removed 13 outVars from TransFormulas that were not future-live. [2024-11-18 09:13:49,709 INFO L287 CfgBuilder]: Performing block encoding [2024-11-18 09:13:49,724 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-18 09:13:49,724 INFO L316 CfgBuilder]: Removed 7 assume(true) statements. [2024-11-18 09:13:49,724 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 09:13:49 BoogieIcfgContainer [2024-11-18 09:13:49,725 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-18 09:13:49,727 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-18 09:13:49,729 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-18 09:13:49,732 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-18 09:13:49,732 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 09:13:48" (1/3) ... [2024-11-18 09:13:49,733 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f11bca3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 09:13:49, skipping insertion in model container [2024-11-18 09:13:49,734 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:13:49" (2/3) ... [2024-11-18 09:13:49,734 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f11bca3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 09:13:49, skipping insertion in model container [2024-11-18 09:13:49,734 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 09:13:49" (3/3) ... [2024-11-18 09:13:49,735 INFO L112 eAbstractionObserver]: Analyzing ICFG zero_sum_m3.c [2024-11-18 09:13:49,753 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-18 09:13:49,755 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-18 09:13:49,821 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-18 09:13:49,832 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;@7da787be, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-18 09:13:49,832 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-18 09:13:49,837 INFO L276 IsEmpty]: Start isEmpty. Operand has 32 states, 30 states have (on average 1.5666666666666667) internal successors, (47), 31 states have internal predecessors, (47), 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) [2024-11-18 09:13:49,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-18 09:13:49,844 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:13:49,845 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:13:49,846 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:13:49,850 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:13:49,851 INFO L85 PathProgramCache]: Analyzing trace with hash 534528496, now seen corresponding path program 1 times [2024-11-18 09:13:49,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:13:49,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1485747726] [2024-11-18 09:13:49,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:13:49,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:13:49,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:13:50,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 09:13:50,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:13:50,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1485747726] [2024-11-18 09:13:50,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1485747726] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 09:13:50,029 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 09:13:50,029 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-18 09:13:50,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441559170] [2024-11-18 09:13:50,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 09:13:50,034 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-18 09:13:50,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:13:50,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-18 09:13:50,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-18 09:13:50,055 INFO L87 Difference]: Start difference. First operand has 32 states, 30 states have (on average 1.5666666666666667) internal successors, (47), 31 states have internal predecessors, (47), 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) Second operand has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 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) [2024-11-18 09:13:50,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:13:50,068 INFO L93 Difference]: Finished difference Result 59 states and 86 transitions. [2024-11-18 09:13:50,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-18 09:13:50,069 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 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) Word has length 19 [2024-11-18 09:13:50,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:13:50,076 INFO L225 Difference]: With dead ends: 59 [2024-11-18 09:13:50,076 INFO L226 Difference]: Without dead ends: 27 [2024-11-18 09:13:50,079 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 [2024-11-18 09:13:50,084 INFO L432 NwaCegarLoop]: 39 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, 39 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 [2024-11-18 09:13:50,085 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 09:13:50,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2024-11-18 09:13:50,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2024-11-18 09:13:50,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.2692307692307692) internal successors, (33), 26 states have internal predecessors, (33), 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) [2024-11-18 09:13:50,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 33 transitions. [2024-11-18 09:13:50,116 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 33 transitions. Word has length 19 [2024-11-18 09:13:50,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:13:50,117 INFO L471 AbstractCegarLoop]: Abstraction has 27 states and 33 transitions. [2024-11-18 09:13:50,117 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 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) [2024-11-18 09:13:50,117 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 33 transitions. [2024-11-18 09:13:50,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-18 09:13:50,119 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:13:50,119 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:13:50,120 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-18 09:13:50,120 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:13:50,121 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:13:50,121 INFO L85 PathProgramCache]: Analyzing trace with hash -697412484, now seen corresponding path program 1 times [2024-11-18 09:13:50,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:13:50,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675583588] [2024-11-18 09:13:50,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:13:50,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:13:50,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:13:50,262 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 09:13:50,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:13:50,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1675583588] [2024-11-18 09:13:50,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1675583588] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 09:13:50,265 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 09:13:50,265 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 09:13:50,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464242354] [2024-11-18 09:13:50,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 09:13:50,267 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 09:13:50,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:13:50,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 09:13:50,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 09:13:50,273 INFO L87 Difference]: Start difference. First operand 27 states and 33 transitions. Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 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) [2024-11-18 09:13:50,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:13:50,328 INFO L93 Difference]: Finished difference Result 51 states and 63 transitions. [2024-11-18 09:13:50,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 09:13:50,329 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 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) Word has length 19 [2024-11-18 09:13:50,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:13:50,330 INFO L225 Difference]: With dead ends: 51 [2024-11-18 09:13:50,330 INFO L226 Difference]: Without dead ends: 29 [2024-11-18 09:13:50,331 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 09:13:50,332 INFO L432 NwaCegarLoop]: 31 mSDtfsCounter, 1 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 09:13:50,335 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 45 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 09:13:50,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2024-11-18 09:13:50,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 28. [2024-11-18 09:13:50,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 27 states have (on average 1.2592592592592593) internal successors, (34), 27 states have internal predecessors, (34), 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) [2024-11-18 09:13:50,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 34 transitions. [2024-11-18 09:13:50,341 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 34 transitions. Word has length 19 [2024-11-18 09:13:50,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:13:50,341 INFO L471 AbstractCegarLoop]: Abstraction has 28 states and 34 transitions. [2024-11-18 09:13:50,342 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 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) [2024-11-18 09:13:50,342 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 34 transitions. [2024-11-18 09:13:50,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-18 09:13:50,343 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:13:50,343 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:13:50,343 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-18 09:13:50,343 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:13:50,344 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:13:50,345 INFO L85 PathProgramCache]: Analyzing trace with hash -506383970, now seen corresponding path program 1 times [2024-11-18 09:13:50,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:13:50,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1711958991] [2024-11-18 09:13:50,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:13:50,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:13:50,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:13:50,550 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-18 09:13:50,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:13:50,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1711958991] [2024-11-18 09:13:50,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1711958991] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 09:13:50,551 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 09:13:50,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 09:13:50,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661409166] [2024-11-18 09:13:50,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 09:13:50,552 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 09:13:50,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:13:50,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 09:13:50,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-18 09:13:50,557 INFO L87 Difference]: Start difference. First operand 28 states and 34 transitions. Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 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) [2024-11-18 09:13:50,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:13:50,654 INFO L93 Difference]: Finished difference Result 59 states and 75 transitions. [2024-11-18 09:13:50,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 09:13:50,655 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 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) Word has length 21 [2024-11-18 09:13:50,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:13:50,656 INFO L225 Difference]: With dead ends: 59 [2024-11-18 09:13:50,656 INFO L226 Difference]: Without dead ends: 40 [2024-11-18 09:13:50,656 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-18 09:13:50,658 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 44 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 09:13:50,658 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 17 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 09:13:50,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2024-11-18 09:13:50,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 34. [2024-11-18 09:13:50,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 33 states have (on average 1.2121212121212122) internal successors, (40), 33 states have internal predecessors, (40), 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) [2024-11-18 09:13:50,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 40 transitions. [2024-11-18 09:13:50,668 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 40 transitions. Word has length 21 [2024-11-18 09:13:50,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:13:50,669 INFO L471 AbstractCegarLoop]: Abstraction has 34 states and 40 transitions. [2024-11-18 09:13:50,669 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 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) [2024-11-18 09:13:50,669 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 40 transitions. [2024-11-18 09:13:50,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-11-18 09:13:50,670 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:13:50,670 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:13:50,670 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-18 09:13:50,671 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:13:50,671 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:13:50,672 INFO L85 PathProgramCache]: Analyzing trace with hash 615846698, now seen corresponding path program 1 times [2024-11-18 09:13:50,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:13:50,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2033265338] [2024-11-18 09:13:50,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:13:50,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:13:50,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:13:50,820 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-18 09:13:50,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:13:50,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2033265338] [2024-11-18 09:13:50,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2033265338] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:13:50,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [354470387] [2024-11-18 09:13:50,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:13:50,821 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:13:50,822 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:13:50,825 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) [2024-11-18 09:13:50,827 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-18 09:13:50,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:13:50,901 INFO L255 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-18 09:13:50,907 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:13:50,982 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-18 09:13:50,983 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 09:13:51,011 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-18 09:13:51,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [354470387] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 09:13:51,012 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 09:13:51,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-11-18 09:13:51,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139413754] [2024-11-18 09:13:51,012 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 09:13:51,013 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-18 09:13:51,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:13:51,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-18 09:13:51,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2024-11-18 09:13:51,014 INFO L87 Difference]: Start difference. First operand 34 states and 40 transitions. Second operand has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 7 states have internal predecessors, (40), 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) [2024-11-18 09:13:51,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:13:51,065 INFO L93 Difference]: Finished difference Result 65 states and 77 transitions. [2024-11-18 09:13:51,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 09:13:51,066 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 7 states have internal predecessors, (40), 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) Word has length 33 [2024-11-18 09:13:51,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:13:51,067 INFO L225 Difference]: With dead ends: 65 [2024-11-18 09:13:51,067 INFO L226 Difference]: Without dead ends: 37 [2024-11-18 09:13:51,068 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 62 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2024-11-18 09:13:51,068 INFO L432 NwaCegarLoop]: 31 mSDtfsCounter, 2 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 09:13:51,069 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 59 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 09:13:51,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2024-11-18 09:13:51,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 36. [2024-11-18 09:13:51,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 35 states have (on average 1.2) internal successors, (42), 35 states have internal predecessors, (42), 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) [2024-11-18 09:13:51,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 42 transitions. [2024-11-18 09:13:51,075 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 42 transitions. Word has length 33 [2024-11-18 09:13:51,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:13:51,075 INFO L471 AbstractCegarLoop]: Abstraction has 36 states and 42 transitions. [2024-11-18 09:13:51,076 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 7 states have internal predecessors, (40), 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) [2024-11-18 09:13:51,076 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 42 transitions. [2024-11-18 09:13:51,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-11-18 09:13:51,077 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:13:51,077 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:13:51,095 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-18 09:13:51,277 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:13:51,278 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:13:51,278 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:13:51,279 INFO L85 PathProgramCache]: Analyzing trace with hash -160084788, now seen corresponding path program 2 times [2024-11-18 09:13:51,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:13:51,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307029779] [2024-11-18 09:13:51,279 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 09:13:51,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:13:51,318 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-18 09:13:51,321 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:13:51,432 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-18 09:13:51,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:13:51,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307029779] [2024-11-18 09:13:51,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1307029779] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:13:51,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1378469577] [2024-11-18 09:13:51,434 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 09:13:51,434 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:13:51,434 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:13:51,436 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) [2024-11-18 09:13:51,438 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-18 09:13:51,506 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-18 09:13:51,506 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:13:51,507 INFO L255 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-18 09:13:51,509 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:13:51,562 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-18 09:13:51,565 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 09:13:51,609 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-18 09:13:51,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1378469577] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 09:13:51,609 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 09:13:51,613 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2024-11-18 09:13:51,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769468847] [2024-11-18 09:13:51,614 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 09:13:51,614 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-18 09:13:51,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:13:51,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-18 09:13:51,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2024-11-18 09:13:51,615 INFO L87 Difference]: Start difference. First operand 36 states and 42 transitions. Second operand has 8 states, 8 states have (on average 5.0) internal successors, (40), 8 states have internal predecessors, (40), 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) [2024-11-18 09:13:51,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:13:51,756 INFO L93 Difference]: Finished difference Result 78 states and 94 transitions. [2024-11-18 09:13:51,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-18 09:13:51,757 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.0) internal successors, (40), 8 states have internal predecessors, (40), 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) Word has length 35 [2024-11-18 09:13:51,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:13:51,758 INFO L225 Difference]: With dead ends: 78 [2024-11-18 09:13:51,758 INFO L226 Difference]: Without dead ends: 54 [2024-11-18 09:13:51,759 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 64 SyntacticMatches, 3 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=40, Unknown=0, NotChecked=0, Total=72 [2024-11-18 09:13:51,760 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 69 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 09:13:51,760 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 25 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 09:13:51,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2024-11-18 09:13:51,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 48. [2024-11-18 09:13:51,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 47 states have (on average 1.148936170212766) internal successors, (54), 47 states have internal predecessors, (54), 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) [2024-11-18 09:13:51,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 54 transitions. [2024-11-18 09:13:51,773 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 54 transitions. Word has length 35 [2024-11-18 09:13:51,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:13:51,773 INFO L471 AbstractCegarLoop]: Abstraction has 48 states and 54 transitions. [2024-11-18 09:13:51,774 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.0) internal successors, (40), 8 states have internal predecessors, (40), 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) [2024-11-18 09:13:51,774 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 54 transitions. [2024-11-18 09:13:51,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-11-18 09:13:51,775 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:13:51,776 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:13:51,793 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-18 09:13:51,977 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:13:51,977 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:13:51,978 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:13:51,978 INFO L85 PathProgramCache]: Analyzing trace with hash -1337652904, now seen corresponding path program 3 times [2024-11-18 09:13:51,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:13:51,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1210689253] [2024-11-18 09:13:51,978 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-18 09:13:51,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:13:52,069 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-18 09:13:52,070 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:13:54,861 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 09:13:54,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:13:54,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1210689253] [2024-11-18 09:13:54,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1210689253] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:13:54,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1999308818] [2024-11-18 09:13:54,862 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-18 09:13:54,862 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:13:54,862 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:13:54,864 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) [2024-11-18 09:13:54,865 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-18 09:13:54,932 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-18 09:13:54,932 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:13:54,933 INFO L255 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 62 conjuncts are in the unsatisfiable core [2024-11-18 09:13:54,937 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:13:55,882 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-18 09:13:55,884 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 09:13:57,075 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-18 09:13:57,076 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 35 treesize of output 43 [2024-11-18 09:13:57,185 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-18 09:13:57,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1999308818] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 09:13:57,186 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 09:13:57,186 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 25, 25] total 78 [2024-11-18 09:13:57,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008333826] [2024-11-18 09:13:57,186 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 09:13:57,187 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 78 states [2024-11-18 09:13:57,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:13:57,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2024-11-18 09:13:57,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=441, Invalid=5565, Unknown=0, NotChecked=0, Total=6006 [2024-11-18 09:13:57,191 INFO L87 Difference]: Start difference. First operand 48 states and 54 transitions. Second operand has 78 states, 78 states have (on average 1.6538461538461537) internal successors, (129), 78 states have internal predecessors, (129), 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) [2024-11-18 09:13:59,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:13:59,220 INFO L93 Difference]: Finished difference Result 91 states and 102 transitions. [2024-11-18 09:13:59,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2024-11-18 09:13:59,221 INFO L78 Accepts]: Start accepts. Automaton has has 78 states, 78 states have (on average 1.6538461538461537) internal successors, (129), 78 states have internal predecessors, (129), 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) Word has length 47 [2024-11-18 09:13:59,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:13:59,222 INFO L225 Difference]: With dead ends: 91 [2024-11-18 09:13:59,222 INFO L226 Difference]: Without dead ends: 87 [2024-11-18 09:13:59,227 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3460 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=624, Invalid=8118, Unknown=0, NotChecked=0, Total=8742 [2024-11-18 09:13:59,229 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 12 mSDsluCounter, 186 mSDsCounter, 0 mSdLazyCounter, 2235 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 197 SdHoareTripleChecker+Invalid, 2276 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 2235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-18 09:13:59,230 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 197 Invalid, 2276 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 2235 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-18 09:13:59,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2024-11-18 09:13:59,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 77. [2024-11-18 09:13:59,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 76 states have (on average 1.1578947368421053) internal successors, (88), 76 states have internal predecessors, (88), 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) [2024-11-18 09:13:59,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 88 transitions. [2024-11-18 09:13:59,245 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 88 transitions. Word has length 47 [2024-11-18 09:13:59,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:13:59,245 INFO L471 AbstractCegarLoop]: Abstraction has 77 states and 88 transitions. [2024-11-18 09:13:59,245 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 78 states, 78 states have (on average 1.6538461538461537) internal successors, (129), 78 states have internal predecessors, (129), 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) [2024-11-18 09:13:59,246 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 88 transitions. [2024-11-18 09:13:59,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-18 09:13:59,247 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:13:59,248 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:13:59,265 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-18 09:13:59,451 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:13:59,452 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:13:59,452 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:13:59,453 INFO L85 PathProgramCache]: Analyzing trace with hash -1235984134, now seen corresponding path program 4 times [2024-11-18 09:13:59,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:13:59,453 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090144704] [2024-11-18 09:13:59,453 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-18 09:13:59,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:13:59,478 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-18 09:13:59,478 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:13:59,564 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-18 09:13:59,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:13:59,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2090144704] [2024-11-18 09:13:59,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2090144704] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:13:59,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2120464612] [2024-11-18 09:13:59,565 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-18 09:13:59,565 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:13:59,565 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:13:59,567 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) [2024-11-18 09:13:59,568 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-18 09:13:59,623 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-18 09:13:59,623 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:13:59,624 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-18 09:13:59,626 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:13:59,703 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-18 09:13:59,703 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 09:13:59,773 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-18 09:13:59,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2120464612] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 09:13:59,774 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 09:13:59,774 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 12 [2024-11-18 09:13:59,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720042015] [2024-11-18 09:13:59,774 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 09:13:59,775 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-18 09:13:59,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:13:59,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-18 09:13:59,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2024-11-18 09:13:59,776 INFO L87 Difference]: Start difference. First operand 77 states and 88 transitions. Second operand has 12 states, 12 states have (on average 3.75) internal successors, (45), 12 states have internal predecessors, (45), 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) [2024-11-18 09:13:59,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:13:59,985 INFO L93 Difference]: Finished difference Result 154 states and 177 transitions. [2024-11-18 09:13:59,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 09:13:59,985 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.75) internal successors, (45), 12 states have internal predecessors, (45), 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) Word has length 49 [2024-11-18 09:13:59,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:13:59,986 INFO L225 Difference]: With dead ends: 154 [2024-11-18 09:13:59,986 INFO L226 Difference]: Without dead ends: 94 [2024-11-18 09:13:59,987 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 89 SyntacticMatches, 6 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2024-11-18 09:13:59,988 INFO L432 NwaCegarLoop]: 15 mSDtfsCounter, 58 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 230 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 230 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 09:13:59,988 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 48 Invalid, 310 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 230 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 09:13:59,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2024-11-18 09:13:59,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 82. [2024-11-18 09:13:59,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 81 states have (on average 1.1358024691358024) internal successors, (92), 81 states have internal predecessors, (92), 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) [2024-11-18 09:13:59,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 92 transitions. [2024-11-18 09:14:00,000 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 92 transitions. Word has length 49 [2024-11-18 09:14:00,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:14:00,000 INFO L471 AbstractCegarLoop]: Abstraction has 82 states and 92 transitions. [2024-11-18 09:14:00,000 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.75) internal successors, (45), 12 states have internal predecessors, (45), 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) [2024-11-18 09:14:00,000 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 92 transitions. [2024-11-18 09:14:00,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-18 09:14:00,004 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:14:00,004 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:14:00,021 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-18 09:14:00,205 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:14:00,205 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:14:00,206 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:14:00,206 INFO L85 PathProgramCache]: Analyzing trace with hash -1725581382, now seen corresponding path program 5 times [2024-11-18 09:14:00,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:14:00,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934696614] [2024-11-18 09:14:00,206 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-18 09:14:00,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:14:00,230 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-11-18 09:14:00,230 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:14:00,322 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-18 09:14:00,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:14:00,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1934696614] [2024-11-18 09:14:00,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1934696614] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:14:00,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [370381667] [2024-11-18 09:14:00,322 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-18 09:14:00,323 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:14:00,323 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:14:00,324 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) [2024-11-18 09:14:00,327 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-18 09:14:00,399 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-11-18 09:14:00,399 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:14:00,400 INFO L255 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-18 09:14:00,402 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:14:00,465 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-18 09:14:00,466 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 09:14:00,525 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-18 09:14:00,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [370381667] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 09:14:00,525 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 09:14:00,525 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 12 [2024-11-18 09:14:00,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451090754] [2024-11-18 09:14:00,526 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 09:14:00,526 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-18 09:14:00,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:14:00,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-18 09:14:00,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2024-11-18 09:14:00,527 INFO L87 Difference]: Start difference. First operand 82 states and 92 transitions. Second operand has 12 states, 12 states have (on average 3.75) internal successors, (45), 12 states have internal predecessors, (45), 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) [2024-11-18 09:14:00,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:14:00,711 INFO L93 Difference]: Finished difference Result 93 states and 103 transitions. [2024-11-18 09:14:00,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-18 09:14:00,711 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.75) internal successors, (45), 12 states have internal predecessors, (45), 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) Word has length 49 [2024-11-18 09:14:00,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:14:00,712 INFO L225 Difference]: With dead ends: 93 [2024-11-18 09:14:00,712 INFO L226 Difference]: Without dead ends: 65 [2024-11-18 09:14:00,712 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 88 SyntacticMatches, 7 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2024-11-18 09:14:00,713 INFO L432 NwaCegarLoop]: 15 mSDtfsCounter, 104 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 155 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 257 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 09:14:00,713 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [104 Valid, 32 Invalid, 257 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 155 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 09:14:00,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2024-11-18 09:14:00,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 60. [2024-11-18 09:14:00,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 59 states have (on average 1.11864406779661) internal successors, (66), 59 states have internal predecessors, (66), 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) [2024-11-18 09:14:00,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 66 transitions. [2024-11-18 09:14:00,724 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 66 transitions. Word has length 49 [2024-11-18 09:14:00,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:14:00,725 INFO L471 AbstractCegarLoop]: Abstraction has 60 states and 66 transitions. [2024-11-18 09:14:00,725 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.75) internal successors, (45), 12 states have internal predecessors, (45), 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) [2024-11-18 09:14:00,725 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 66 transitions. [2024-11-18 09:14:00,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-11-18 09:14:00,727 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:14:00,727 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:14:00,744 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-18 09:14:00,931 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:14:00,932 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:14:00,932 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:14:00,932 INFO L85 PathProgramCache]: Analyzing trace with hash 571442148, now seen corresponding path program 6 times [2024-11-18 09:14:00,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:14:00,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302757464] [2024-11-18 09:14:00,933 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-18 09:14:00,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:14:00,969 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2024-11-18 09:14:00,969 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:14:01,082 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-18 09:14:01,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:14:01,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [302757464] [2024-11-18 09:14:01,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [302757464] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:14:01,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1999972003] [2024-11-18 09:14:01,083 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-18 09:14:01,083 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:14:01,084 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:14:01,085 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) [2024-11-18 09:14:01,086 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-18 09:14:01,154 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2024-11-18 09:14:01,155 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:14:01,156 INFO L255 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-18 09:14:01,157 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:14:01,245 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-18 09:14:01,246 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 09:14:01,318 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-18 09:14:01,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1999972003] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 09:14:01,318 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 09:14:01,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14 [2024-11-18 09:14:01,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274012531] [2024-11-18 09:14:01,319 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 09:14:01,319 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-18 09:14:01,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:14:01,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-18 09:14:01,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2024-11-18 09:14:01,320 INFO L87 Difference]: Start difference. First operand 60 states and 66 transitions. Second operand has 14 states, 14 states have (on average 3.642857142857143) internal successors, (51), 14 states have internal predecessors, (51), 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) [2024-11-18 09:14:01,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:14:01,422 INFO L93 Difference]: Finished difference Result 115 states and 127 transitions. [2024-11-18 09:14:01,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 09:14:01,423 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.642857142857143) internal successors, (51), 14 states have internal predecessors, (51), 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) Word has length 59 [2024-11-18 09:14:01,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:14:01,424 INFO L225 Difference]: With dead ends: 115 [2024-11-18 09:14:01,424 INFO L226 Difference]: Without dead ends: 63 [2024-11-18 09:14:01,424 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 108 SyntacticMatches, 5 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2024-11-18 09:14:01,425 INFO L432 NwaCegarLoop]: 28 mSDtfsCounter, 5 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 09:14:01,425 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 130 Invalid, 187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 09:14:01,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2024-11-18 09:14:01,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 62. [2024-11-18 09:14:01,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 61 states have (on average 1.1147540983606556) internal successors, (68), 61 states have internal predecessors, (68), 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) [2024-11-18 09:14:01,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 68 transitions. [2024-11-18 09:14:01,433 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 68 transitions. Word has length 59 [2024-11-18 09:14:01,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:14:01,433 INFO L471 AbstractCegarLoop]: Abstraction has 62 states and 68 transitions. [2024-11-18 09:14:01,433 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.642857142857143) internal successors, (51), 14 states have internal predecessors, (51), 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) [2024-11-18 09:14:01,434 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 68 transitions. [2024-11-18 09:14:01,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-11-18 09:14:01,434 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:14:01,435 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:14:01,452 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-18 09:14:01,639 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:14:01,640 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:14:01,641 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:14:01,641 INFO L85 PathProgramCache]: Analyzing trace with hash -1781065978, now seen corresponding path program 7 times [2024-11-18 09:14:01,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:14:01,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1494458692] [2024-11-18 09:14:01,643 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-18 09:14:01,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:14:01,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:14:05,912 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 09:14:05,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:14:05,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1494458692] [2024-11-18 09:14:05,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1494458692] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:14:05,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2101469780] [2024-11-18 09:14:05,914 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-18 09:14:05,914 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:14:05,914 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:14:05,918 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) [2024-11-18 09:14:05,920 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-18 09:14:05,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:14:05,997 INFO L255 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 90 conjuncts are in the unsatisfiable core [2024-11-18 09:14:06,001 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:14:06,049 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-18 09:14:07,163 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 09:14:07,163 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 09:14:09,582 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-18 09:14:09,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2101469780] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 09:14:09,582 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 09:14:09,582 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 39, 37] total 100 [2024-11-18 09:14:09,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726916412] [2024-11-18 09:14:09,582 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 09:14:09,583 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 100 states [2024-11-18 09:14:09,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:14:09,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 100 interpolants. [2024-11-18 09:14:09,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=372, Invalid=9528, Unknown=0, NotChecked=0, Total=9900 [2024-11-18 09:14:09,586 INFO L87 Difference]: Start difference. First operand 62 states and 68 transitions. Second operand has 100 states, 100 states have (on average 1.46) internal successors, (146), 100 states have internal predecessors, (146), 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) [2024-11-18 09:14:14,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:14:14,706 INFO L93 Difference]: Finished difference Result 126 states and 139 transitions. [2024-11-18 09:14:14,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2024-11-18 09:14:14,707 INFO L78 Accepts]: Start accepts. Automaton has has 100 states, 100 states have (on average 1.46) internal successors, (146), 100 states have internal predecessors, (146), 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) Word has length 61 [2024-11-18 09:14:14,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:14:14,708 INFO L225 Difference]: With dead ends: 126 [2024-11-18 09:14:14,708 INFO L226 Difference]: Without dead ends: 122 [2024-11-18 09:14:14,711 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 138 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4536 ImplicationChecksByTransitivity, 7.3s TimeCoverageRelationStatistics Valid=820, Invalid=18640, Unknown=0, NotChecked=0, Total=19460 [2024-11-18 09:14:14,712 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 12 mSDsluCounter, 317 mSDsCounter, 0 mSdLazyCounter, 4792 mSolverCounterSat, 109 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 330 SdHoareTripleChecker+Invalid, 4901 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 109 IncrementalHoareTripleChecker+Valid, 4792 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-11-18 09:14:14,712 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 330 Invalid, 4901 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [109 Valid, 4792 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-11-18 09:14:14,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2024-11-18 09:14:14,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 109. [2024-11-18 09:14:14,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 108 states have (on average 1.1296296296296295) internal successors, (122), 108 states have internal predecessors, (122), 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) [2024-11-18 09:14:14,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 122 transitions. [2024-11-18 09:14:14,725 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 122 transitions. Word has length 61 [2024-11-18 09:14:14,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:14:14,726 INFO L471 AbstractCegarLoop]: Abstraction has 109 states and 122 transitions. [2024-11-18 09:14:14,726 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 100 states, 100 states have (on average 1.46) internal successors, (146), 100 states have internal predecessors, (146), 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) [2024-11-18 09:14:14,726 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 122 transitions. [2024-11-18 09:14:14,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-11-18 09:14:14,727 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:14:14,727 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:14:14,741 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-18 09:14:14,927 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:14:14,928 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:14:14,928 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:14:14,928 INFO L85 PathProgramCache]: Analyzing trace with hash 2140781352, now seen corresponding path program 8 times [2024-11-18 09:14:14,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:14:14,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1322649115] [2024-11-18 09:14:14,929 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 09:14:14,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:14:14,943 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-18 09:14:14,943 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:14:15,061 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-18 09:14:15,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:14:15,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1322649115] [2024-11-18 09:14:15,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1322649115] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:14:15,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [73364960] [2024-11-18 09:14:15,063 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 09:14:15,063 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:14:15,064 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:14:15,065 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) [2024-11-18 09:14:15,067 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-18 09:14:15,134 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-18 09:14:15,134 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:14:15,135 INFO L255 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-18 09:14:15,137 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:14:15,259 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 16 proven. 9 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-18 09:14:15,259 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 09:14:15,364 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 16 proven. 9 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-18 09:14:15,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [73364960] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 09:14:15,364 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 09:14:15,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 17 [2024-11-18 09:14:15,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592621170] [2024-11-18 09:14:15,365 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 09:14:15,366 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-18 09:14:15,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:14:15,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-18 09:14:15,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=202, Unknown=0, NotChecked=0, Total=272 [2024-11-18 09:14:15,368 INFO L87 Difference]: Start difference. First operand 109 states and 122 transitions. Second operand has 17 states, 17 states have (on average 3.3529411764705883) internal successors, (57), 17 states have internal predecessors, (57), 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) [2024-11-18 09:14:15,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:14:15,602 INFO L93 Difference]: Finished difference Result 225 states and 251 transitions. [2024-11-18 09:14:15,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-18 09:14:15,603 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.3529411764705883) internal successors, (57), 17 states have internal predecessors, (57), 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) Word has length 63 [2024-11-18 09:14:15,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:14:15,604 INFO L225 Difference]: With dead ends: 225 [2024-11-18 09:14:15,604 INFO L226 Difference]: Without dead ends: 102 [2024-11-18 09:14:15,604 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 113 SyntacticMatches, 7 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=202, Unknown=0, NotChecked=0, Total=272 [2024-11-18 09:14:15,605 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 31 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 385 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 436 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 385 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 09:14:15,605 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 74 Invalid, 436 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 385 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 09:14:15,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2024-11-18 09:14:15,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 101. [2024-11-18 09:14:15,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 100 states have (on average 1.12) internal successors, (112), 100 states have internal predecessors, (112), 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) [2024-11-18 09:14:15,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 112 transitions. [2024-11-18 09:14:15,624 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 112 transitions. Word has length 63 [2024-11-18 09:14:15,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:14:15,624 INFO L471 AbstractCegarLoop]: Abstraction has 101 states and 112 transitions. [2024-11-18 09:14:15,624 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.3529411764705883) internal successors, (57), 17 states have internal predecessors, (57), 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) [2024-11-18 09:14:15,624 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 112 transitions. [2024-11-18 09:14:15,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-18 09:14:15,625 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:14:15,625 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:14:15,645 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-18 09:14:15,825 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-18 09:14:15,826 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:14:15,826 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:14:15,826 INFO L85 PathProgramCache]: Analyzing trace with hash -784405174, now seen corresponding path program 9 times [2024-11-18 09:14:15,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:14:15,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213837310] [2024-11-18 09:14:15,826 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-18 09:14:15,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:14:15,868 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2024-11-18 09:14:15,868 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:14:15,990 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 4 proven. 21 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2024-11-18 09:14:15,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:14:15,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213837310] [2024-11-18 09:14:15,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [213837310] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:14:15,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1333666777] [2024-11-18 09:14:15,991 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-18 09:14:15,992 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:14:15,992 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:14:15,993 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) [2024-11-18 09:14:15,994 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-18 09:14:16,074 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2024-11-18 09:14:16,074 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:14:16,075 INFO L255 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-18 09:14:16,077 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:14:16,178 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 9 proven. 16 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2024-11-18 09:14:16,178 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 09:14:16,263 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 9 proven. 16 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2024-11-18 09:14:16,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1333666777] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 09:14:16,263 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 09:14:16,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 17 [2024-11-18 09:14:16,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349871368] [2024-11-18 09:14:16,263 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 09:14:16,264 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-18 09:14:16,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:14:16,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-18 09:14:16,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2024-11-18 09:14:16,265 INFO L87 Difference]: Start difference. First operand 101 states and 112 transitions. Second operand has 17 states, 17 states have (on average 3.3529411764705883) internal successors, (57), 17 states have internal predecessors, (57), 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) [2024-11-18 09:14:16,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:14:16,399 INFO L93 Difference]: Finished difference Result 155 states and 175 transitions. [2024-11-18 09:14:16,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-18 09:14:16,399 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.3529411764705883) internal successors, (57), 17 states have internal predecessors, (57), 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) Word has length 65 [2024-11-18 09:14:16,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:14:16,400 INFO L225 Difference]: With dead ends: 155 [2024-11-18 09:14:16,400 INFO L226 Difference]: Without dead ends: 82 [2024-11-18 09:14:16,400 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 116 SyntacticMatches, 8 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=89, Invalid=253, Unknown=0, NotChecked=0, Total=342 [2024-11-18 09:14:16,401 INFO L432 NwaCegarLoop]: 12 mSDtfsCounter, 62 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 219 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 270 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 219 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 09:14:16,401 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 36 Invalid, 270 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 219 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 09:14:16,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2024-11-18 09:14:16,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 76. [2024-11-18 09:14:16,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 75 states have (on average 1.0933333333333333) internal successors, (82), 75 states have internal predecessors, (82), 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) [2024-11-18 09:14:16,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 82 transitions. [2024-11-18 09:14:16,407 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 82 transitions. Word has length 65 [2024-11-18 09:14:16,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:14:16,407 INFO L471 AbstractCegarLoop]: Abstraction has 76 states and 82 transitions. [2024-11-18 09:14:16,407 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.3529411764705883) internal successors, (57), 17 states have internal predecessors, (57), 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) [2024-11-18 09:14:16,408 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 82 transitions. [2024-11-18 09:14:16,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2024-11-18 09:14:16,408 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:14:16,408 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:14:16,424 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-18 09:14:16,609 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:14:16,609 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:14:16,609 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:14:16,610 INFO L85 PathProgramCache]: Analyzing trace with hash 958143540, now seen corresponding path program 10 times [2024-11-18 09:14:16,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:14:16,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1117703442] [2024-11-18 09:14:16,610 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-18 09:14:16,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:14:16,639 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-18 09:14:16,640 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:14:21,244 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 2 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 09:14:21,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:14:21,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1117703442] [2024-11-18 09:14:21,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1117703442] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:14:21,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [100187945] [2024-11-18 09:14:21,245 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-18 09:14:21,245 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:14:21,245 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:14:21,246 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) [2024-11-18 09:14:21,247 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-18 09:14:21,315 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-18 09:14:21,315 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:14:21,317 INFO L255 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 105 conjuncts are in the unsatisfiable core [2024-11-18 09:14:21,319 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:14:25,097 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 96 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-18 09:14:25,097 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 09:14:29,476 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-18 09:14:29,476 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 69 treesize of output 153 [2024-11-18 09:14:30,123 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 96 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-18 09:14:30,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [100187945] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 09:14:30,124 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 09:14:30,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [64, 49, 49] total 146 [2024-11-18 09:14:30,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761712333] [2024-11-18 09:14:30,124 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 09:14:30,124 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 146 states [2024-11-18 09:14:30,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:14:30,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 146 interpolants. [2024-11-18 09:14:30,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=481, Invalid=20689, Unknown=0, NotChecked=0, Total=21170 [2024-11-18 09:14:30,129 INFO L87 Difference]: Start difference. First operand 76 states and 82 transitions. Second operand has 146 states, 146 states have (on average 1.3150684931506849) internal successors, (192), 146 states have internal predecessors, (192), 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) [2024-11-18 09:14:47,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:14:47,683 INFO L93 Difference]: Finished difference Result 233 states and 256 transitions. [2024-11-18 09:14:47,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 132 states. [2024-11-18 09:14:47,684 INFO L78 Accepts]: Start accepts. Automaton has has 146 states, 146 states have (on average 1.3150684931506849) internal successors, (192), 146 states have internal predecessors, (192), 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) Word has length 75 [2024-11-18 09:14:47,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:14:47,686 INFO L225 Difference]: With dead ends: 233 [2024-11-18 09:14:47,686 INFO L226 Difference]: Without dead ends: 228 [2024-11-18 09:14:47,691 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 325 GetRequests, 67 SyntacticMatches, 1 SemanticMatches, 257 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15097 ImplicationChecksByTransitivity, 22.4s TimeCoverageRelationStatistics Valid=2295, Invalid=64527, Unknown=0, NotChecked=0, Total=66822 [2024-11-18 09:14:47,691 INFO L432 NwaCegarLoop]: 16 mSDtfsCounter, 57 mSDsluCounter, 316 mSDsCounter, 0 mSdLazyCounter, 9783 mSolverCounterSat, 464 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 332 SdHoareTripleChecker+Invalid, 10247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 464 IncrementalHoareTripleChecker+Valid, 9783 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2024-11-18 09:14:47,691 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 332 Invalid, 10247 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [464 Valid, 9783 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2024-11-18 09:14:47,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2024-11-18 09:14:47,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 123. [2024-11-18 09:14:47,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 122 states have (on average 1.1065573770491803) internal successors, (135), 122 states have internal predecessors, (135), 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) [2024-11-18 09:14:47,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 135 transitions. [2024-11-18 09:14:47,716 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 135 transitions. Word has length 75 [2024-11-18 09:14:47,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:14:47,717 INFO L471 AbstractCegarLoop]: Abstraction has 123 states and 135 transitions. [2024-11-18 09:14:47,717 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 146 states, 146 states have (on average 1.3150684931506849) internal successors, (192), 146 states have internal predecessors, (192), 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) [2024-11-18 09:14:47,717 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 135 transitions. [2024-11-18 09:14:47,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-11-18 09:14:47,718 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:14:47,718 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:14:47,730 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-18 09:14:47,918 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,SelfDestructingSolverStorable12 [2024-11-18 09:14:47,918 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:14:47,919 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:14:47,919 INFO L85 PathProgramCache]: Analyzing trace with hash 1706175702, now seen corresponding path program 11 times [2024-11-18 09:14:47,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:14:47,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497025708] [2024-11-18 09:14:47,919 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-18 09:14:47,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:14:47,957 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2024-11-18 09:14:47,958 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:14:48,100 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 25 proven. 16 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2024-11-18 09:14:48,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:14:48,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [497025708] [2024-11-18 09:14:48,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [497025708] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:14:48,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1579280571] [2024-11-18 09:14:48,101 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-18 09:14:48,101 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:14:48,101 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:14:48,102 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) [2024-11-18 09:14:48,103 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-18 09:14:48,251 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2024-11-18 09:14:48,251 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:14:48,252 INFO L255 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-18 09:14:48,253 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:14:48,353 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 25 proven. 16 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2024-11-18 09:14:48,353 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 09:14:48,427 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 25 proven. 16 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2024-11-18 09:14:48,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1579280571] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 09:14:48,428 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 09:14:48,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 18 [2024-11-18 09:14:48,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712755276] [2024-11-18 09:14:48,428 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 09:14:48,428 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-18 09:14:48,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:14:48,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-18 09:14:48,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=223, Unknown=0, NotChecked=0, Total=306 [2024-11-18 09:14:48,429 INFO L87 Difference]: Start difference. First operand 123 states and 135 transitions. Second operand has 18 states, 18 states have (on average 3.1666666666666665) internal successors, (57), 18 states have internal predecessors, (57), 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) [2024-11-18 09:14:48,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:14:48,664 INFO L93 Difference]: Finished difference Result 241 states and 266 transitions. [2024-11-18 09:14:48,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-18 09:14:48,664 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.1666666666666665) internal successors, (57), 18 states have internal predecessors, (57), 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) Word has length 77 [2024-11-18 09:14:48,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:14:48,665 INFO L225 Difference]: With dead ends: 241 [2024-11-18 09:14:48,665 INFO L226 Difference]: Without dead ends: 108 [2024-11-18 09:14:48,666 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 144 SyntacticMatches, 10 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2024-11-18 09:14:48,666 INFO L432 NwaCegarLoop]: 15 mSDtfsCounter, 110 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 311 mSolverCounterSat, 130 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 441 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 130 IncrementalHoareTripleChecker+Valid, 311 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 09:14:48,666 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 58 Invalid, 441 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [130 Valid, 311 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 09:14:48,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2024-11-18 09:14:48,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 96. [2024-11-18 09:14:48,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 95 states have (on average 1.0842105263157895) internal successors, (103), 95 states have internal predecessors, (103), 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) [2024-11-18 09:14:48,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 103 transitions. [2024-11-18 09:14:48,682 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 103 transitions. Word has length 77 [2024-11-18 09:14:48,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:14:48,682 INFO L471 AbstractCegarLoop]: Abstraction has 96 states and 103 transitions. [2024-11-18 09:14:48,682 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.1666666666666665) internal successors, (57), 18 states have internal predecessors, (57), 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) [2024-11-18 09:14:48,682 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 103 transitions. [2024-11-18 09:14:48,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2024-11-18 09:14:48,683 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:14:48,683 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:14:48,695 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-18 09:14:48,883 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,SelfDestructingSolverStorable13 [2024-11-18 09:14:48,883 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:14:48,884 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:14:48,884 INFO L85 PathProgramCache]: Analyzing trace with hash 810682428, now seen corresponding path program 12 times [2024-11-18 09:14:48,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:14:48,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455087850] [2024-11-18 09:14:48,884 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-18 09:14:48,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:14:48,930 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2024-11-18 09:14:48,930 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:14:49,072 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 18 proven. 23 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2024-11-18 09:14:49,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:14:49,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1455087850] [2024-11-18 09:14:49,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1455087850] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:14:49,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1248525987] [2024-11-18 09:14:49,073 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-18 09:14:49,074 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:14:49,074 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:14:49,075 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 09:14:49,076 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-18 09:14:49,170 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2024-11-18 09:14:49,170 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:14:49,172 INFO L255 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-18 09:14:49,173 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:14:49,365 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 16 proven. 25 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2024-11-18 09:14:49,365 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 09:14:49,540 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 16 proven. 25 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2024-11-18 09:14:49,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1248525987] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 09:14:49,541 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 09:14:49,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 29 [2024-11-18 09:14:49,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135426754] [2024-11-18 09:14:49,541 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 09:14:49,541 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-11-18 09:14:49,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:14:49,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-11-18 09:14:49,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=689, Unknown=0, NotChecked=0, Total=812 [2024-11-18 09:14:49,542 INFO L87 Difference]: Start difference. First operand 96 states and 103 transitions. Second operand has 29 states, 29 states have (on average 3.2758620689655173) internal successors, (95), 29 states have internal predecessors, (95), 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) [2024-11-18 09:14:50,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:14:50,007 INFO L93 Difference]: Finished difference Result 180 states and 195 transitions. [2024-11-18 09:14:50,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2024-11-18 09:14:50,007 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 3.2758620689655173) internal successors, (95), 29 states have internal predecessors, (95), 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) Word has length 83 [2024-11-18 09:14:50,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:14:50,008 INFO L225 Difference]: With dead ends: 180 [2024-11-18 09:14:50,008 INFO L226 Difference]: Without dead ends: 96 [2024-11-18 09:14:50,009 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 146 SyntacticMatches, 6 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 648 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=343, Invalid=1913, Unknown=0, NotChecked=0, Total=2256 [2024-11-18 09:14:50,009 INFO L432 NwaCegarLoop]: 12 mSDtfsCounter, 167 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 747 mSolverCounterSat, 183 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 930 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 183 IncrementalHoareTripleChecker+Valid, 747 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-18 09:14:50,009 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [167 Valid, 62 Invalid, 930 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [183 Valid, 747 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-18 09:14:50,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2024-11-18 09:14:50,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 90. [2024-11-18 09:14:50,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 89 states have (on average 1.0786516853932584) internal successors, (96), 89 states have internal predecessors, (96), 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) [2024-11-18 09:14:50,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 96 transitions. [2024-11-18 09:14:50,024 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 96 transitions. Word has length 83 [2024-11-18 09:14:50,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:14:50,024 INFO L471 AbstractCegarLoop]: Abstraction has 90 states and 96 transitions. [2024-11-18 09:14:50,025 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 3.2758620689655173) internal successors, (95), 29 states have internal predecessors, (95), 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) [2024-11-18 09:14:50,025 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 96 transitions. [2024-11-18 09:14:50,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2024-11-18 09:14:50,025 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:14:50,025 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:14:50,037 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-18 09:14:50,225 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-18 09:14:50,226 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:14:50,226 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:14:50,226 INFO L85 PathProgramCache]: Analyzing trace with hash -1296238366, now seen corresponding path program 13 times [2024-11-18 09:14:50,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:14:50,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771702169] [2024-11-18 09:14:50,226 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-18 09:14:50,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:14:50,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:14:57,059 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 7 proven. 168 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 09:14:57,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:14:57,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771702169] [2024-11-18 09:14:57,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [771702169] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:14:57,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1551107513] [2024-11-18 09:14:57,060 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-18 09:14:57,060 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:14:57,060 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:14:57,061 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 09:14:57,062 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-18 09:14:57,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:14:57,142 WARN L253 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 142 conjuncts are in the unsatisfiable core [2024-11-18 09:14:57,144 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:14:57,296 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-18 09:15:00,892 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 0 proven. 175 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 09:15:00,892 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 09:15:08,746 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 0 proven. 150 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-18 09:15:08,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1551107513] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 09:15:08,747 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 09:15:08,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [75, 65, 61] total 174 [2024-11-18 09:15:08,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404333103] [2024-11-18 09:15:08,747 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 09:15:08,747 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 174 states [2024-11-18 09:15:08,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:15:08,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 174 interpolants. [2024-11-18 09:15:08,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=635, Invalid=29467, Unknown=0, NotChecked=0, Total=30102 [2024-11-18 09:15:08,750 INFO L87 Difference]: Start difference. First operand 90 states and 96 transitions. Second operand has 174 states, 174 states have (on average 1.2816091954022988) internal successors, (223), 174 states have internal predecessors, (223), 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)