./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p20.c --full-output --architecture 64bit -------------------------------------------------------------------------------- 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/hardware-verification-bv/btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p20.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-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 64bit --witnessprinter.graph.data.programhash e0b57c08af7035dacaf862ca8a67d9e46c03de7c7f0732dae53a8c2546607fd5 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-18 18:15:15,304 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-18 18:15:15,371 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2024-11-18 18:15:15,376 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-18 18:15:15,376 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-18 18:15:15,401 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-18 18:15:15,401 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-18 18:15:15,402 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-18 18:15:15,403 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-18 18:15:15,404 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-18 18:15:15,404 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-18 18:15:15,405 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-18 18:15:15,405 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-18 18:15:15,405 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-18 18:15:15,407 INFO L153 SettingsManager]: * Use SBE=true [2024-11-18 18:15:15,407 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-18 18:15:15,408 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-18 18:15:15,408 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-18 18:15:15,410 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-18 18:15:15,410 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-18 18:15:15,411 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-18 18:15:15,411 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-18 18:15:15,411 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-18 18:15:15,414 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-18 18:15:15,414 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-18 18:15:15,415 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-18 18:15:15,415 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-18 18:15:15,415 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-18 18:15:15,415 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-18 18:15:15,415 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 18:15:15,416 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-18 18:15:15,416 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-18 18:15:15,416 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-18 18:15:15,416 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-18 18:15:15,416 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-18 18:15:15,417 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-18 18:15:15,417 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-18 18:15:15,417 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-18 18:15:15,419 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-18 18:15:15,419 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e0b57c08af7035dacaf862ca8a67d9e46c03de7c7f0732dae53a8c2546607fd5 [2024-11-18 18:15:15,727 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-18 18:15:15,754 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-18 18:15:15,757 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-18 18:15:15,758 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-18 18:15:15,759 INFO L274 PluginConnector]: CDTParser initialized [2024-11-18 18:15:15,760 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p20.c [2024-11-18 18:15:17,195 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-18 18:15:17,345 INFO L384 CDTParser]: Found 1 translation units. [2024-11-18 18:15:17,345 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p20.c [2024-11-18 18:15:17,356 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/beada3a81/087c7cf44a484b2fa0fd86a04352a807/FLAGfc65fb76d [2024-11-18 18:15:17,368 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/beada3a81/087c7cf44a484b2fa0fd86a04352a807 [2024-11-18 18:15:17,370 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-18 18:15:17,371 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-18 18:15:17,372 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-18 18:15:17,372 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-18 18:15:17,382 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-18 18:15:17,383 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 06:15:17" (1/1) ... [2024-11-18 18:15:17,384 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b45bacf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:15:17, skipping insertion in model container [2024-11-18 18:15:17,384 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 06:15:17" (1/1) ... [2024-11-18 18:15:17,419 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-18 18:15:17,547 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/hardware-verification-bv/btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p20.c[1266,1279] [2024-11-18 18:15:17,591 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 18:15:17,601 INFO L200 MainTranslator]: Completed pre-run [2024-11-18 18:15:17,610 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/hardware-verification-bv/btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p20.c[1266,1279] [2024-11-18 18:15:17,635 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 18:15:17,649 INFO L204 MainTranslator]: Completed translation [2024-11-18 18:15:17,649 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:15:17 WrapperNode [2024-11-18 18:15:17,650 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-18 18:15:17,650 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-18 18:15:17,651 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-18 18:15:17,651 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-18 18:15:17,656 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:15:17" (1/1) ... [2024-11-18 18:15:17,668 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:15:17" (1/1) ... [2024-11-18 18:15:17,712 INFO L138 Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 341 [2024-11-18 18:15:17,713 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-18 18:15:17,713 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-18 18:15:17,714 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-18 18:15:17,714 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-18 18:15:17,724 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:15:17" (1/1) ... [2024-11-18 18:15:17,725 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:15:17" (1/1) ... [2024-11-18 18:15:17,736 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:15:17" (1/1) ... [2024-11-18 18:15:17,775 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-18 18:15:17,775 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:15:17" (1/1) ... [2024-11-18 18:15:17,775 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:15:17" (1/1) ... [2024-11-18 18:15:17,786 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:15:17" (1/1) ... [2024-11-18 18:15:17,793 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:15:17" (1/1) ... [2024-11-18 18:15:17,800 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:15:17" (1/1) ... [2024-11-18 18:15:17,804 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:15:17" (1/1) ... [2024-11-18 18:15:17,815 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-18 18:15:17,818 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-18 18:15:17,818 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-18 18:15:17,818 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-18 18:15:17,819 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:15:17" (1/1) ... [2024-11-18 18:15:17,825 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 18:15:17,841 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 18:15:17,865 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 18:15:17,878 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 18:15:17,930 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-18 18:15:17,931 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-18 18:15:17,931 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-18 18:15:17,931 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-18 18:15:18,030 INFO L238 CfgBuilder]: Building ICFG [2024-11-18 18:15:18,032 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-18 18:15:18,582 INFO L? ?]: Removed 136 outVars from TransFormulas that were not future-live. [2024-11-18 18:15:18,584 INFO L287 CfgBuilder]: Performing block encoding [2024-11-18 18:15:18,601 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-18 18:15:18,602 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-18 18:15:18,602 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 06:15:18 BoogieIcfgContainer [2024-11-18 18:15:18,602 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-18 18:15:18,605 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-18 18:15:18,605 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-18 18:15:18,608 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-18 18:15:18,608 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 06:15:17" (1/3) ... [2024-11-18 18:15:18,609 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22773d43 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 06:15:18, skipping insertion in model container [2024-11-18 18:15:18,610 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:15:17" (2/3) ... [2024-11-18 18:15:18,610 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22773d43 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 06:15:18, skipping insertion in model container [2024-11-18 18:15:18,611 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 06:15:18" (3/3) ... [2024-11-18 18:15:18,612 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p20.c [2024-11-18 18:15:18,629 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-18 18:15:18,629 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-18 18:15:18,685 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-18 18:15:18,690 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;@7e14f4c3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-18 18:15:18,690 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-18 18:15:18,695 INFO L276 IsEmpty]: Start isEmpty. Operand has 62 states, 60 states have (on average 1.4833333333333334) internal successors, (89), 61 states have internal predecessors, (89), 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 18:15:18,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-18 18:15:18,701 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 18:15:18,701 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] [2024-11-18 18:15:18,702 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 18:15:18,705 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 18:15:18,706 INFO L85 PathProgramCache]: Analyzing trace with hash -11435034, now seen corresponding path program 1 times [2024-11-18 18:15:18,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 18:15:18,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002041017] [2024-11-18 18:15:18,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 18:15:18,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 18:15:18,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 18:15:19,113 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 18:15:19,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 18:15:19,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1002041017] [2024-11-18 18:15:19,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1002041017] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 18:15:19,115 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 18:15:19,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 18:15:19,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402952046] [2024-11-18 18:15:19,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 18:15:19,121 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 18:15:19,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 18:15:19,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 18:15:19,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 18:15:19,140 INFO L87 Difference]: Start difference. First operand has 62 states, 60 states have (on average 1.4833333333333334) internal successors, (89), 61 states have internal predecessors, (89), 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 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 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 18:15:19,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 18:15:19,181 INFO L93 Difference]: Finished difference Result 101 states and 147 transitions. [2024-11-18 18:15:19,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 18:15:19,184 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 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 25 [2024-11-18 18:15:19,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 18:15:19,190 INFO L225 Difference]: With dead ends: 101 [2024-11-18 18:15:19,190 INFO L226 Difference]: Without dead ends: 61 [2024-11-18 18:15:19,193 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 18:15:19,196 INFO L432 NwaCegarLoop]: 83 mSDtfsCounter, 0 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 243 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 18:15:19,196 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 243 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 18:15:19,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2024-11-18 18:15:19,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2024-11-18 18:15:19,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 60 states have (on average 1.45) internal successors, (87), 60 states have internal predecessors, (87), 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 18:15:19,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 87 transitions. [2024-11-18 18:15:19,223 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 87 transitions. Word has length 25 [2024-11-18 18:15:19,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 18:15:19,224 INFO L471 AbstractCegarLoop]: Abstraction has 61 states and 87 transitions. [2024-11-18 18:15:19,224 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 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 18:15:19,224 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 87 transitions. [2024-11-18 18:15:19,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-18 18:15:19,225 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 18:15:19,225 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] [2024-11-18 18:15:19,226 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-18 18:15:19,226 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 18:15:19,227 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 18:15:19,227 INFO L85 PathProgramCache]: Analyzing trace with hash -352790771, now seen corresponding path program 1 times [2024-11-18 18:15:19,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 18:15:19,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110376766] [2024-11-18 18:15:19,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 18:15:19,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 18:15:19,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 18:15:19,430 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 18:15:19,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 18:15:19,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [110376766] [2024-11-18 18:15:19,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [110376766] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 18:15:19,431 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 18:15:19,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 18:15:19,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107848668] [2024-11-18 18:15:19,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 18:15:19,433 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 18:15:19,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 18:15:19,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 18:15:19,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 18:15:19,436 INFO L87 Difference]: Start difference. First operand 61 states and 87 transitions. Second operand has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 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 18:15:19,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 18:15:19,466 INFO L93 Difference]: Finished difference Result 102 states and 145 transitions. [2024-11-18 18:15:19,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 18:15:19,469 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 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 26 [2024-11-18 18:15:19,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 18:15:19,469 INFO L225 Difference]: With dead ends: 102 [2024-11-18 18:15:19,470 INFO L226 Difference]: Without dead ends: 63 [2024-11-18 18:15:19,470 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 18:15:19,471 INFO L432 NwaCegarLoop]: 83 mSDtfsCounter, 0 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 239 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 18:15:19,471 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 239 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 18:15:19,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2024-11-18 18:15:19,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2024-11-18 18:15:19,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 62 states have (on average 1.435483870967742) internal successors, (89), 62 states have internal predecessors, (89), 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 18:15:19,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 89 transitions. [2024-11-18 18:15:19,480 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 89 transitions. Word has length 26 [2024-11-18 18:15:19,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 18:15:19,481 INFO L471 AbstractCegarLoop]: Abstraction has 63 states and 89 transitions. [2024-11-18 18:15:19,481 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 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 18:15:19,481 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 89 transitions. [2024-11-18 18:15:19,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-18 18:15:19,482 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 18:15:19,482 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] [2024-11-18 18:15:19,483 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-18 18:15:19,483 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 18:15:19,483 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 18:15:19,484 INFO L85 PathProgramCache]: Analyzing trace with hash 850422175, now seen corresponding path program 1 times [2024-11-18 18:15:19,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 18:15:19,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [758765711] [2024-11-18 18:15:19,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 18:15:19,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 18:15:19,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 18:15:19,747 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 18:15:19,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 18:15:19,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [758765711] [2024-11-18 18:15:19,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [758765711] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 18:15:19,748 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 18:15:19,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 18:15:19,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708138498] [2024-11-18 18:15:19,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 18:15:19,748 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 18:15:19,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 18:15:19,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 18:15:19,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 18:15:19,749 INFO L87 Difference]: Start difference. First operand 63 states and 89 transitions. Second operand has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 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 18:15:19,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 18:15:19,783 INFO L93 Difference]: Finished difference Result 104 states and 146 transitions. [2024-11-18 18:15:19,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 18:15:19,784 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 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 27 [2024-11-18 18:15:19,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 18:15:19,784 INFO L225 Difference]: With dead ends: 104 [2024-11-18 18:15:19,784 INFO L226 Difference]: Without dead ends: 63 [2024-11-18 18:15:19,786 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 18:15:19,787 INFO L432 NwaCegarLoop]: 79 mSDtfsCounter, 6 mSDsluCounter, 148 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 227 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 18:15:19,789 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 227 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 18:15:19,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2024-11-18 18:15:19,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2024-11-18 18:15:19,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 62 states have (on average 1.4193548387096775) internal successors, (88), 62 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 18:15:19,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 88 transitions. [2024-11-18 18:15:19,797 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 88 transitions. Word has length 27 [2024-11-18 18:15:19,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 18:15:19,798 INFO L471 AbstractCegarLoop]: Abstraction has 63 states and 88 transitions. [2024-11-18 18:15:19,798 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 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 18:15:19,798 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 88 transitions. [2024-11-18 18:15:19,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-18 18:15:19,799 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 18:15:19,800 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] [2024-11-18 18:15:19,800 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-18 18:15:19,801 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 18:15:19,801 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 18:15:19,801 INFO L85 PathProgramCache]: Analyzing trace with hash 1502170580, now seen corresponding path program 1 times [2024-11-18 18:15:19,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 18:15:19,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984562199] [2024-11-18 18:15:19,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 18:15:19,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 18:15:19,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 18:15:20,089 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 18:15:20,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 18:15:20,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984562199] [2024-11-18 18:15:20,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [984562199] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 18:15:20,090 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 18:15:20,090 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-18 18:15:20,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828256294] [2024-11-18 18:15:20,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 18:15:20,090 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-18 18:15:20,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 18:15:20,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-18 18:15:20,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-18 18:15:20,091 INFO L87 Difference]: Start difference. First operand 63 states and 88 transitions. Second operand has 8 states, 8 states have (on average 3.5) internal successors, (28), 8 states have internal predecessors, (28), 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 18:15:20,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 18:15:20,195 INFO L93 Difference]: Finished difference Result 114 states and 158 transitions. [2024-11-18 18:15:20,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-18 18:15:20,198 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.5) internal successors, (28), 8 states have internal predecessors, (28), 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 28 [2024-11-18 18:15:20,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 18:15:20,198 INFO L225 Difference]: With dead ends: 114 [2024-11-18 18:15:20,198 INFO L226 Difference]: Without dead ends: 73 [2024-11-18 18:15:20,199 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-11-18 18:15:20,199 INFO L432 NwaCegarLoop]: 77 mSDtfsCounter, 88 mSDsluCounter, 371 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 448 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 18:15:20,200 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 448 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 18:15:20,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2024-11-18 18:15:20,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 72. [2024-11-18 18:15:20,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 71 states have (on average 1.408450704225352) internal successors, (100), 71 states have internal predecessors, (100), 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 18:15:20,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 100 transitions. [2024-11-18 18:15:20,205 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 100 transitions. Word has length 28 [2024-11-18 18:15:20,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 18:15:20,209 INFO L471 AbstractCegarLoop]: Abstraction has 72 states and 100 transitions. [2024-11-18 18:15:20,209 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.5) internal successors, (28), 8 states have internal predecessors, (28), 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 18:15:20,210 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 100 transitions. [2024-11-18 18:15:20,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-18 18:15:20,210 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 18:15:20,210 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] [2024-11-18 18:15:20,210 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-18 18:15:20,210 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 18:15:20,211 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 18:15:20,211 INFO L85 PathProgramCache]: Analyzing trace with hash -358005860, now seen corresponding path program 1 times [2024-11-18 18:15:20,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 18:15:20,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1624529512] [2024-11-18 18:15:20,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 18:15:20,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 18:15:20,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 18:15:20,471 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 18:15:20,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 18:15:20,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1624529512] [2024-11-18 18:15:20,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1624529512] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 18:15:20,473 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 18:15:20,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 18:15:20,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990861407] [2024-11-18 18:15:20,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 18:15:20,474 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 18:15:20,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 18:15:20,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 18:15:20,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-18 18:15:20,476 INFO L87 Difference]: Start difference. First operand 72 states and 100 transitions. Second operand has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 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 18:15:20,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 18:15:20,513 INFO L93 Difference]: Finished difference Result 128 states and 176 transitions. [2024-11-18 18:15:20,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 18:15:20,514 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 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 29 [2024-11-18 18:15:20,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 18:15:20,515 INFO L225 Difference]: With dead ends: 128 [2024-11-18 18:15:20,515 INFO L226 Difference]: Without dead ends: 78 [2024-11-18 18:15:20,515 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-18 18:15:20,516 INFO L432 NwaCegarLoop]: 80 mSDtfsCounter, 71 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 233 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 18:15:20,519 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 233 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 18:15:20,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2024-11-18 18:15:20,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2024-11-18 18:15:20,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 77 states have (on average 1.3766233766233766) internal successors, (106), 77 states have internal predecessors, (106), 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 18:15:20,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 106 transitions. [2024-11-18 18:15:20,525 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 106 transitions. Word has length 29 [2024-11-18 18:15:20,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 18:15:20,526 INFO L471 AbstractCegarLoop]: Abstraction has 78 states and 106 transitions. [2024-11-18 18:15:20,526 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 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 18:15:20,526 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 106 transitions. [2024-11-18 18:15:20,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-18 18:15:20,528 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 18:15:20,528 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] [2024-11-18 18:15:20,528 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-18 18:15:20,528 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 18:15:20,529 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 18:15:20,529 INFO L85 PathProgramCache]: Analyzing trace with hash 167789105, now seen corresponding path program 1 times [2024-11-18 18:15:20,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 18:15:20,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073513082] [2024-11-18 18:15:20,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 18:15:20,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 18:15:20,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 18:15:20,693 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 18:15:20,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 18:15:20,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1073513082] [2024-11-18 18:15:20,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1073513082] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 18:15:20,695 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 18:15:20,695 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 18:15:20,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553906419] [2024-11-18 18:15:20,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 18:15:20,696 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 18:15:20,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 18:15:20,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 18:15:20,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-18 18:15:20,697 INFO L87 Difference]: Start difference. First operand 78 states and 106 transitions. Second operand has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 6 states have internal predecessors, (29), 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 18:15:20,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 18:15:20,743 INFO L93 Difference]: Finished difference Result 166 states and 220 transitions. [2024-11-18 18:15:20,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 18:15:20,744 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 6 states have internal predecessors, (29), 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 29 [2024-11-18 18:15:20,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 18:15:20,745 INFO L225 Difference]: With dead ends: 166 [2024-11-18 18:15:20,746 INFO L226 Difference]: Without dead ends: 110 [2024-11-18 18:15:20,746 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-11-18 18:15:20,747 INFO L432 NwaCegarLoop]: 79 mSDtfsCounter, 132 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 231 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 18:15:20,749 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [132 Valid, 231 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 18:15:20,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2024-11-18 18:15:20,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 80. [2024-11-18 18:15:20,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 79 states have (on average 1.3670886075949367) internal successors, (108), 79 states have internal predecessors, (108), 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 18:15:20,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 108 transitions. [2024-11-18 18:15:20,757 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 108 transitions. Word has length 29 [2024-11-18 18:15:20,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 18:15:20,757 INFO L471 AbstractCegarLoop]: Abstraction has 80 states and 108 transitions. [2024-11-18 18:15:20,757 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 6 states have internal predecessors, (29), 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 18:15:20,758 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 108 transitions. [2024-11-18 18:15:20,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-11-18 18:15:20,758 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 18:15:20,758 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] [2024-11-18 18:15:20,758 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-18 18:15:20,758 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 18:15:20,759 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 18:15:20,759 INFO L85 PathProgramCache]: Analyzing trace with hash 976517016, now seen corresponding path program 1 times [2024-11-18 18:15:20,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 18:15:20,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [489371524] [2024-11-18 18:15:20,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 18:15:20,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 18:15:20,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 18:15:20,882 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 18:15:20,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 18:15:20,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [489371524] [2024-11-18 18:15:20,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [489371524] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 18:15:20,883 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 18:15:20,883 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 18:15:20,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015443919] [2024-11-18 18:15:20,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 18:15:20,884 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 18:15:20,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 18:15:20,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 18:15:20,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-18 18:15:20,885 INFO L87 Difference]: Start difference. First operand 80 states and 108 transitions. Second operand has 6 states, 6 states have (on average 5.0) internal successors, (30), 6 states have internal predecessors, (30), 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 18:15:20,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 18:15:20,992 INFO L93 Difference]: Finished difference Result 148 states and 195 transitions. [2024-11-18 18:15:20,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 18:15:20,992 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.0) internal successors, (30), 6 states have internal predecessors, (30), 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 30 [2024-11-18 18:15:20,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 18:15:20,993 INFO L225 Difference]: With dead ends: 148 [2024-11-18 18:15:20,993 INFO L226 Difference]: Without dead ends: 92 [2024-11-18 18:15:20,993 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-11-18 18:15:20,994 INFO L432 NwaCegarLoop]: 79 mSDtfsCounter, 98 mSDsluCounter, 175 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 254 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 18:15:20,995 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 254 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 18:15:20,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2024-11-18 18:15:21,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 82. [2024-11-18 18:15:21,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 81 states have (on average 1.3580246913580247) internal successors, (110), 81 states have internal predecessors, (110), 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 18:15:21,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 110 transitions. [2024-11-18 18:15:21,004 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 110 transitions. Word has length 30 [2024-11-18 18:15:21,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 18:15:21,004 INFO L471 AbstractCegarLoop]: Abstraction has 82 states and 110 transitions. [2024-11-18 18:15:21,005 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.0) internal successors, (30), 6 states have internal predecessors, (30), 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 18:15:21,005 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 110 transitions. [2024-11-18 18:15:21,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-18 18:15:21,006 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 18:15:21,006 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 18:15:21,006 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-18 18:15:21,006 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 18:15:21,006 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 18:15:21,006 INFO L85 PathProgramCache]: Analyzing trace with hash 1363753517, now seen corresponding path program 1 times [2024-11-18 18:15:21,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 18:15:21,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114742759] [2024-11-18 18:15:21,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 18:15:21,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 18:15:21,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 18:15:21,362 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 18:15:21,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 18:15:21,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2114742759] [2024-11-18 18:15:21,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2114742759] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 18:15:21,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1196713718] [2024-11-18 18:15:21,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 18:15:21,363 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 18:15:21,364 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 18:15:21,366 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 18:15:21,367 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 18:15:21,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 18:15:21,513 INFO L255 TraceCheckSpWp]: Trace formula consists of 358 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-18 18:15:21,527 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 18:15:21,780 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 18:15:21,781 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 18:15:21,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1196713718] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 18:15:21,785 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 18:15:21,785 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 9 [2024-11-18 18:15:21,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238206913] [2024-11-18 18:15:21,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 18:15:21,785 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 18:15:21,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 18:15:21,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 18:15:21,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-11-18 18:15:21,786 INFO L87 Difference]: Start difference. First operand 82 states and 110 transitions. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 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 18:15:21,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 18:15:21,939 INFO L93 Difference]: Finished difference Result 155 states and 205 transitions. [2024-11-18 18:15:21,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 18:15:21,940 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 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 18:15:21,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 18:15:21,940 INFO L225 Difference]: With dead ends: 155 [2024-11-18 18:15:21,940 INFO L226 Difference]: Without dead ends: 99 [2024-11-18 18:15:21,941 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-11-18 18:15:21,941 INFO L432 NwaCegarLoop]: 24 mSDtfsCounter, 106 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 183 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 18:15:21,941 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 69 Invalid, 184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 183 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 18:15:21,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2024-11-18 18:15:21,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 94. [2024-11-18 18:15:21,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 93 states have (on average 1.3118279569892473) internal successors, (122), 93 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 18:15:21,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 122 transitions. [2024-11-18 18:15:21,949 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 122 transitions. Word has length 49 [2024-11-18 18:15:21,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 18:15:21,949 INFO L471 AbstractCegarLoop]: Abstraction has 94 states and 122 transitions. [2024-11-18 18:15:21,949 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 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 18:15:21,949 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 122 transitions. [2024-11-18 18:15:21,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-11-18 18:15:21,950 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 18:15:21,953 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 18:15:21,968 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 18:15:22,153 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 18:15:22,155 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 18:15:22,155 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 18:15:22,156 INFO L85 PathProgramCache]: Analyzing trace with hash 1274866513, now seen corresponding path program 1 times [2024-11-18 18:15:22,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 18:15:22,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1564711206] [2024-11-18 18:15:22,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 18:15:22,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 18:15:22,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 18:15:22,566 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 18:15:22,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 18:15:22,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1564711206] [2024-11-18 18:15:22,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1564711206] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 18:15:22,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1670396744] [2024-11-18 18:15:22,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 18:15:22,572 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 18:15:22,573 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 18:15:22,574 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 18:15:22,577 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 18:15:22,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 18:15:22,765 INFO L255 TraceCheckSpWp]: Trace formula consists of 361 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-18 18:15:22,768 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 18:15:23,036 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 18:15:23,039 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 18:15:23,344 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 18:15:23,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1670396744] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 18:15:23,344 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 18:15:23,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 7] total 17 [2024-11-18 18:15:23,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513652338] [2024-11-18 18:15:23,347 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 18:15:23,348 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-18 18:15:23,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 18:15:23,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-18 18:15:23,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=219, Unknown=0, NotChecked=0, Total=272 [2024-11-18 18:15:23,349 INFO L87 Difference]: Start difference. First operand 94 states and 122 transitions. Second operand has 17 states, 17 states have (on average 6.764705882352941) internal successors, (115), 17 states have internal predecessors, (115), 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 18:15:23,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 18:15:23,770 INFO L93 Difference]: Finished difference Result 191 states and 249 transitions. [2024-11-18 18:15:23,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 18:15:23,770 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 6.764705882352941) internal successors, (115), 17 states have internal predecessors, (115), 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 50 [2024-11-18 18:15:23,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 18:15:23,772 INFO L225 Difference]: With dead ends: 191 [2024-11-18 18:15:23,772 INFO L226 Difference]: Without dead ends: 135 [2024-11-18 18:15:23,772 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=118, Invalid=388, Unknown=0, NotChecked=0, Total=506 [2024-11-18 18:15:23,773 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 365 mSDsluCounter, 172 mSDsCounter, 0 mSdLazyCounter, 506 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 365 SdHoareTripleChecker+Valid, 195 SdHoareTripleChecker+Invalid, 508 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 506 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-18 18:15:23,773 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [365 Valid, 195 Invalid, 508 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 506 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-18 18:15:23,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2024-11-18 18:15:23,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 105. [2024-11-18 18:15:23,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 104 states have (on average 1.3173076923076923) internal successors, (137), 104 states have internal predecessors, (137), 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 18:15:23,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 137 transitions. [2024-11-18 18:15:23,779 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 137 transitions. Word has length 50 [2024-11-18 18:15:23,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 18:15:23,779 INFO L471 AbstractCegarLoop]: Abstraction has 105 states and 137 transitions. [2024-11-18 18:15:23,779 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 6.764705882352941) internal successors, (115), 17 states have internal predecessors, (115), 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 18:15:23,780 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 137 transitions. [2024-11-18 18:15:23,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-11-18 18:15:23,781 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 18:15:23,781 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 18:15:23,802 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-18 18:15:23,982 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2024-11-18 18:15:23,983 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 18:15:23,983 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 18:15:23,983 INFO L85 PathProgramCache]: Analyzing trace with hash 936178296, now seen corresponding path program 1 times [2024-11-18 18:15:23,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 18:15:23,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376558303] [2024-11-18 18:15:23,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 18:15:23,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 18:15:24,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 18:15:24,892 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-18 18:15:24,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 18:15:24,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [376558303] [2024-11-18 18:15:24,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [376558303] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 18:15:24,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [769517582] [2024-11-18 18:15:24,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 18:15:24,896 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 18:15:24,897 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 18:15:24,898 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 18:15:24,900 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 18:15:25,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 18:15:25,060 INFO L255 TraceCheckSpWp]: Trace formula consists of 362 conjuncts, 60 conjuncts are in the unsatisfiable core [2024-11-18 18:15:25,064 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 18:15:25,599 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 18:15:25,600 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 18:15:26,972 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 18:15:26,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [769517582] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 18:15:26,973 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 18:15:26,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 9] total 22 [2024-11-18 18:15:26,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084130541] [2024-11-18 18:15:26,973 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 18:15:26,974 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-18 18:15:26,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 18:15:26,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-18 18:15:26,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=399, Unknown=0, NotChecked=0, Total=462 [2024-11-18 18:15:26,975 INFO L87 Difference]: Start difference. First operand 105 states and 137 transitions. Second operand has 22 states, 22 states have (on average 5.954545454545454) internal successors, (131), 22 states have internal predecessors, (131), 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 18:15:28,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 18:15:28,576 INFO L93 Difference]: Finished difference Result 178 states and 231 transitions. [2024-11-18 18:15:28,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-11-18 18:15:28,576 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 5.954545454545454) internal successors, (131), 22 states have internal predecessors, (131), 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 51 [2024-11-18 18:15:28,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 18:15:28,577 INFO L225 Difference]: With dead ends: 178 [2024-11-18 18:15:28,578 INFO L226 Difference]: Without dead ends: 122 [2024-11-18 18:15:28,580 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 417 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=357, Invalid=1899, Unknown=0, NotChecked=0, Total=2256 [2024-11-18 18:15:28,580 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 217 mSDsluCounter, 212 mSDsCounter, 0 mSdLazyCounter, 1010 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 217 SdHoareTripleChecker+Valid, 229 SdHoareTripleChecker+Invalid, 1018 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 1010 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-18 18:15:28,580 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [217 Valid, 229 Invalid, 1018 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 1010 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-18 18:15:28,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2024-11-18 18:15:28,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 111. [2024-11-18 18:15:28,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 110 states have (on average 1.309090909090909) internal successors, (144), 110 states have internal predecessors, (144), 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 18:15:28,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 144 transitions. [2024-11-18 18:15:28,584 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 144 transitions. Word has length 51 [2024-11-18 18:15:28,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 18:15:28,584 INFO L471 AbstractCegarLoop]: Abstraction has 111 states and 144 transitions. [2024-11-18 18:15:28,585 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 5.954545454545454) internal successors, (131), 22 states have internal predecessors, (131), 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 18:15:28,585 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 144 transitions. [2024-11-18 18:15:28,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-11-18 18:15:28,590 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 18:15:28,590 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1] [2024-11-18 18:15:28,618 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 18:15:28,790 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 18:15:28,791 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 18:15:28,792 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 18:15:28,795 INFO L85 PathProgramCache]: Analyzing trace with hash 1249252173, now seen corresponding path program 1 times [2024-11-18 18:15:28,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 18:15:28,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1238844926] [2024-11-18 18:15:28,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 18:15:28,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 18:15:28,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 18:15:29,681 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 41 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 18:15:29,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 18:15:29,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1238844926] [2024-11-18 18:15:29,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1238844926] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 18:15:29,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2022466963] [2024-11-18 18:15:29,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 18:15:29,683 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 18:15:29,683 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 18:15:29,685 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 18:15:29,712 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 18:15:29,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 18:15:29,992 INFO L255 TraceCheckSpWp]: Trace formula consists of 547 conjuncts, 47 conjuncts are in the unsatisfiable core [2024-11-18 18:15:30,003 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 18:15:30,405 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 36 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 18:15:30,406 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 18:15:30,919 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 39 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 18:15:30,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2022466963] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 18:15:30,920 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 18:15:30,921 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12, 12] total 31 [2024-11-18 18:15:30,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071611369] [2024-11-18 18:15:30,921 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 18:15:30,922 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-11-18 18:15:30,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 18:15:30,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-11-18 18:15:30,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=785, Unknown=0, NotChecked=0, Total=930 [2024-11-18 18:15:30,923 INFO L87 Difference]: Start difference. First operand 111 states and 144 transitions. Second operand has 31 states, 31 states have (on average 5.903225806451613) internal successors, (183), 31 states have internal predecessors, (183), 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 18:15:32,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 18:15:32,454 INFO L93 Difference]: Finished difference Result 432 states and 557 transitions. [2024-11-18 18:15:32,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2024-11-18 18:15:32,455 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 5.903225806451613) internal successors, (183), 31 states have internal predecessors, (183), 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 70 [2024-11-18 18:15:32,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 18:15:32,458 INFO L225 Difference]: With dead ends: 432 [2024-11-18 18:15:32,458 INFO L226 Difference]: Without dead ends: 372 [2024-11-18 18:15:32,459 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1076 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=613, Invalid=3547, Unknown=0, NotChecked=0, Total=4160 [2024-11-18 18:15:32,459 INFO L432 NwaCegarLoop]: 41 mSDtfsCounter, 531 mSDsluCounter, 624 mSDsCounter, 0 mSdLazyCounter, 1538 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 531 SdHoareTripleChecker+Valid, 665 SdHoareTripleChecker+Invalid, 1557 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 1538 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-18 18:15:32,460 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [531 Valid, 665 Invalid, 1557 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 1538 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-18 18:15:32,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 372 states. [2024-11-18 18:15:32,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 372 to 227. [2024-11-18 18:15:32,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 227 states, 226 states have (on average 1.323008849557522) internal successors, (299), 226 states have internal predecessors, (299), 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 18:15:32,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 299 transitions. [2024-11-18 18:15:32,469 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 299 transitions. Word has length 70 [2024-11-18 18:15:32,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 18:15:32,470 INFO L471 AbstractCegarLoop]: Abstraction has 227 states and 299 transitions. [2024-11-18 18:15:32,470 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 5.903225806451613) internal successors, (183), 31 states have internal predecessors, (183), 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 18:15:32,470 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 299 transitions. [2024-11-18 18:15:32,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-11-18 18:15:32,471 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 18:15:32,471 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 18:15:32,486 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-18 18:15:32,671 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 18:15:32,673 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 18:15:32,674 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 18:15:32,674 INFO L85 PathProgramCache]: Analyzing trace with hash 1191344208, now seen corresponding path program 1 times [2024-11-18 18:15:32,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 18:15:32,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005639889] [2024-11-18 18:15:32,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 18:15:32,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 18:15:32,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 18:15:33,826 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-18 18:15:33,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 18:15:33,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1005639889] [2024-11-18 18:15:33,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1005639889] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 18:15:33,827 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 18:15:33,827 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 18:15:33,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033564726] [2024-11-18 18:15:33,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 18:15:33,827 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 18:15:33,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 18:15:33,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 18:15:33,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-18 18:15:33,828 INFO L87 Difference]: Start difference. First operand 227 states and 299 transitions. Second operand has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 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 18:15:33,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 18:15:33,951 INFO L93 Difference]: Finished difference Result 394 states and 522 transitions. [2024-11-18 18:15:33,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 18:15:33,952 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 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 71 [2024-11-18 18:15:33,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 18:15:33,953 INFO L225 Difference]: With dead ends: 394 [2024-11-18 18:15:33,953 INFO L226 Difference]: Without dead ends: 216 [2024-11-18 18:15:33,953 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-18 18:15:33,954 INFO L432 NwaCegarLoop]: 26 mSDtfsCounter, 74 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 178 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 178 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 18:15:33,954 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 73 Invalid, 179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 178 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 18:15:33,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2024-11-18 18:15:33,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 216. [2024-11-18 18:15:33,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 215 states have (on average 1.3209302325581396) internal successors, (284), 215 states have internal predecessors, (284), 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 18:15:33,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 284 transitions. [2024-11-18 18:15:33,959 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 284 transitions. Word has length 71 [2024-11-18 18:15:33,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 18:15:33,959 INFO L471 AbstractCegarLoop]: Abstraction has 216 states and 284 transitions. [2024-11-18 18:15:33,959 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 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 18:15:33,960 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 284 transitions. [2024-11-18 18:15:33,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-11-18 18:15:33,960 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 18:15:33,960 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 18:15:33,961 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-18 18:15:33,961 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 18:15:33,961 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 18:15:33,961 INFO L85 PathProgramCache]: Analyzing trace with hash 1675724371, now seen corresponding path program 1 times [2024-11-18 18:15:33,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 18:15:33,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023631131] [2024-11-18 18:15:33,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 18:15:33,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 18:15:34,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 18:15:35,472 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 32 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 18:15:35,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 18:15:35,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023631131] [2024-11-18 18:15:35,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2023631131] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 18:15:35,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1253894713] [2024-11-18 18:15:35,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 18:15:35,473 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 18:15:35,473 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 18:15:35,476 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 18:15:35,480 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 18:15:35,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 18:15:35,768 INFO L255 TraceCheckSpWp]: Trace formula consists of 549 conjuncts, 67 conjuncts are in the unsatisfiable core [2024-11-18 18:15:35,776 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 18:15:36,549 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 32 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 18:15:36,549 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 18:15:37,472 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 18 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 18:15:37,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1253894713] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 18:15:37,473 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 18:15:37,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 15, 15] total 38 [2024-11-18 18:15:37,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922990126] [2024-11-18 18:15:37,474 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 18:15:37,474 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2024-11-18 18:15:37,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 18:15:37,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2024-11-18 18:15:37,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=219, Invalid=1187, Unknown=0, NotChecked=0, Total=1406 [2024-11-18 18:15:37,476 INFO L87 Difference]: Start difference. First operand 216 states and 284 transitions. Second operand has 38 states, 38 states have (on average 4.894736842105263) internal successors, (186), 38 states have internal predecessors, (186), 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 18:15:39,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 18:15:39,035 INFO L93 Difference]: Finished difference Result 930 states and 1224 transitions. [2024-11-18 18:15:39,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2024-11-18 18:15:39,036 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 4.894736842105263) internal successors, (186), 38 states have internal predecessors, (186), 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 72 [2024-11-18 18:15:39,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 18:15:39,038 INFO L225 Difference]: With dead ends: 930 [2024-11-18 18:15:39,038 INFO L226 Difference]: Without dead ends: 763 [2024-11-18 18:15:39,043 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1120 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=587, Invalid=3195, Unknown=0, NotChecked=0, Total=3782 [2024-11-18 18:15:39,044 INFO L432 NwaCegarLoop]: 31 mSDtfsCounter, 466 mSDsluCounter, 561 mSDsCounter, 0 mSdLazyCounter, 1428 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 466 SdHoareTripleChecker+Valid, 592 SdHoareTripleChecker+Invalid, 1446 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 1428 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-18 18:15:39,045 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [466 Valid, 592 Invalid, 1446 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 1428 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-18 18:15:39,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 763 states. [2024-11-18 18:15:39,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 763 to 533. [2024-11-18 18:15:39,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 533 states, 532 states have (on average 1.330827067669173) internal successors, (708), 532 states have internal predecessors, (708), 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 18:15:39,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 533 states to 533 states and 708 transitions. [2024-11-18 18:15:39,060 INFO L78 Accepts]: Start accepts. Automaton has 533 states and 708 transitions. Word has length 72 [2024-11-18 18:15:39,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 18:15:39,060 INFO L471 AbstractCegarLoop]: Abstraction has 533 states and 708 transitions. [2024-11-18 18:15:39,060 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 4.894736842105263) internal successors, (186), 38 states have internal predecessors, (186), 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 18:15:39,062 INFO L276 IsEmpty]: Start isEmpty. Operand 533 states and 708 transitions. [2024-11-18 18:15:39,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-11-18 18:15:39,062 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 18:15:39,062 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 18:15:39,080 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 18:15:39,263 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-18 18:15:39,263 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 18:15:39,263 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 18:15:39,264 INFO L85 PathProgramCache]: Analyzing trace with hash 1198648893, now seen corresponding path program 1 times [2024-11-18 18:15:39,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 18:15:39,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830485421] [2024-11-18 18:15:39,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 18:15:39,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 18:15:39,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 18:15:39,891 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 42 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 18:15:39,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 18:15:39,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [830485421] [2024-11-18 18:15:39,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [830485421] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 18:15:39,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1012130140] [2024-11-18 18:15:39,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 18:15:39,892 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 18:15:39,892 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 18:15:39,894 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 18:15:39,896 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 18:15:40,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 18:15:40,160 INFO L255 TraceCheckSpWp]: Trace formula consists of 552 conjuncts, 45 conjuncts are in the unsatisfiable core [2024-11-18 18:15:40,164 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 18:15:40,368 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 42 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 18:15:40,369 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 18:15:40,720 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 40 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 18:15:40,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1012130140] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 18:15:40,720 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 18:15:40,721 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 11] total 24 [2024-11-18 18:15:40,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694999595] [2024-11-18 18:15:40,721 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 18:15:40,721 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-18 18:15:40,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 18:15:40,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-18 18:15:40,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=463, Unknown=0, NotChecked=0, Total=552 [2024-11-18 18:15:40,723 INFO L87 Difference]: Start difference. First operand 533 states and 708 transitions. Second operand has 24 states, 24 states have (on average 7.125) internal successors, (171), 24 states have internal predecessors, (171), 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 18:15:41,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 18:15:41,467 INFO L93 Difference]: Finished difference Result 1420 states and 1904 transitions. [2024-11-18 18:15:41,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-18 18:15:41,468 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 7.125) internal successors, (171), 24 states have internal predecessors, (171), 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 73 [2024-11-18 18:15:41,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 18:15:41,471 INFO L225 Difference]: With dead ends: 1420 [2024-11-18 18:15:41,471 INFO L226 Difference]: Without dead ends: 927 [2024-11-18 18:15:41,473 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 280 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=222, Invalid=1184, Unknown=0, NotChecked=0, Total=1406 [2024-11-18 18:15:41,473 INFO L432 NwaCegarLoop]: 40 mSDtfsCounter, 163 mSDsluCounter, 406 mSDsCounter, 0 mSdLazyCounter, 1205 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 446 SdHoareTripleChecker+Invalid, 1211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 1205 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-18 18:15:41,474 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [163 Valid, 446 Invalid, 1211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 1205 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-18 18:15:41,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 927 states. [2024-11-18 18:15:41,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 927 to 880. [2024-11-18 18:15:41,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 880 states, 879 states have (on average 1.3378839590443685) internal successors, (1176), 879 states have internal predecessors, (1176), 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 18:15:41,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 880 states to 880 states and 1176 transitions. [2024-11-18 18:15:41,497 INFO L78 Accepts]: Start accepts. Automaton has 880 states and 1176 transitions. Word has length 73 [2024-11-18 18:15:41,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 18:15:41,497 INFO L471 AbstractCegarLoop]: Abstraction has 880 states and 1176 transitions. [2024-11-18 18:15:41,498 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 7.125) internal successors, (171), 24 states have internal predecessors, (171), 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 18:15:41,498 INFO L276 IsEmpty]: Start isEmpty. Operand 880 states and 1176 transitions. [2024-11-18 18:15:41,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-11-18 18:15:41,499 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 18:15:41,499 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 18:15:41,521 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 18:15:41,703 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 18:15:41,704 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 18:15:41,704 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 18:15:41,705 INFO L85 PathProgramCache]: Analyzing trace with hash -1033696741, now seen corresponding path program 1 times [2024-11-18 18:15:41,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 18:15:41,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258605707] [2024-11-18 18:15:41,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 18:15:41,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 18:15:41,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 18:15:42,335 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-18 18:15:42,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 18:15:42,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [258605707] [2024-11-18 18:15:42,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [258605707] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 18:15:42,336 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 18:15:42,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 18:15:42,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161187993] [2024-11-18 18:15:42,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 18:15:42,337 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 18:15:42,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 18:15:42,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 18:15:42,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 18:15:42,337 INFO L87 Difference]: Start difference. First operand 880 states and 1176 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 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 18:15:42,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 18:15:42,486 INFO L93 Difference]: Finished difference Result 1722 states and 2305 transitions. [2024-11-18 18:15:42,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 18:15:42,487 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 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 74 [2024-11-18 18:15:42,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 18:15:42,490 INFO L225 Difference]: With dead ends: 1722 [2024-11-18 18:15:42,490 INFO L226 Difference]: Without dead ends: 882 [2024-11-18 18:15:42,491 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-18 18:15:42,492 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 93 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 180 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 18:15:42,492 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 72 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 180 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 18:15:42,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 882 states. [2024-11-18 18:15:42,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 882 to 882. [2024-11-18 18:15:42,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 882 states, 881 states have (on average 1.337116912599319) internal successors, (1178), 881 states have internal predecessors, (1178), 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 18:15:42,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 882 states to 882 states and 1178 transitions. [2024-11-18 18:15:42,514 INFO L78 Accepts]: Start accepts. Automaton has 882 states and 1178 transitions. Word has length 74 [2024-11-18 18:15:42,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 18:15:42,514 INFO L471 AbstractCegarLoop]: Abstraction has 882 states and 1178 transitions. [2024-11-18 18:15:42,515 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 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 18:15:42,515 INFO L276 IsEmpty]: Start isEmpty. Operand 882 states and 1178 transitions. [2024-11-18 18:15:42,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-11-18 18:15:42,516 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 18:15:42,516 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1] [2024-11-18 18:15:42,516 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-18 18:15:42,516 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 18:15:42,517 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 18:15:42,517 INFO L85 PathProgramCache]: Analyzing trace with hash 154887636, now seen corresponding path program 2 times [2024-11-18 18:15:42,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 18:15:42,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [485672661] [2024-11-18 18:15:42,517 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 18:15:42,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 18:15:42,675 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-18 18:15:42,675 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 18:15:43,450 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 66 proven. 18 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-18 18:15:43,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 18:15:43,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [485672661] [2024-11-18 18:15:43,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [485672661] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 18:15:43,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [72595194] [2024-11-18 18:15:43,451 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 18:15:43,451 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 18:15:43,452 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 18:15:43,453 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 18:15:43,454 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 18:15:43,966 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-18 18:15:43,966 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 18:15:43,970 INFO L255 TraceCheckSpWp]: Trace formula consists of 736 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-18 18:15:43,974 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 18:15:44,241 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 82 proven. 2 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-18 18:15:44,241 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 18:15:44,663 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 82 proven. 2 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-18 18:15:44,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [72595194] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 18:15:44,663 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 18:15:44,664 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 8] total 18 [2024-11-18 18:15:44,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245804626] [2024-11-18 18:15:44,664 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 18:15:44,664 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-18 18:15:44,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 18:15:44,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-18 18:15:44,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=235, Unknown=0, NotChecked=0, Total=306 [2024-11-18 18:15:44,665 INFO L87 Difference]: Start difference. First operand 882 states and 1178 transitions. Second operand has 18 states, 18 states have (on average 10.666666666666666) internal successors, (192), 18 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 18:15:45,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 18:15:45,073 INFO L93 Difference]: Finished difference Result 2290 states and 3061 transitions. [2024-11-18 18:15:45,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-18 18:15:45,074 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 10.666666666666666) internal successors, (192), 18 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 91 [2024-11-18 18:15:45,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 18:15:45,077 INFO L225 Difference]: With dead ends: 2290 [2024-11-18 18:15:45,077 INFO L226 Difference]: Without dead ends: 1450 [2024-11-18 18:15:45,078 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 172 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=90, Invalid=290, Unknown=0, NotChecked=0, Total=380 [2024-11-18 18:15:45,079 INFO L432 NwaCegarLoop]: 44 mSDtfsCounter, 242 mSDsluCounter, 376 mSDsCounter, 0 mSdLazyCounter, 920 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 242 SdHoareTripleChecker+Valid, 420 SdHoareTripleChecker+Invalid, 922 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 920 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-18 18:15:45,079 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [242 Valid, 420 Invalid, 922 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 920 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-18 18:15:45,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1450 states. [2024-11-18 18:15:45,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1450 to 1394. [2024-11-18 18:15:45,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1394 states, 1393 states have (on average 1.3237616654702082) internal successors, (1844), 1393 states have internal predecessors, (1844), 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 18:15:45,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1394 states to 1394 states and 1844 transitions. [2024-11-18 18:15:45,102 INFO L78 Accepts]: Start accepts. Automaton has 1394 states and 1844 transitions. Word has length 91 [2024-11-18 18:15:45,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 18:15:45,102 INFO L471 AbstractCegarLoop]: Abstraction has 1394 states and 1844 transitions. [2024-11-18 18:15:45,102 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 10.666666666666666) internal successors, (192), 18 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 18:15:45,103 INFO L276 IsEmpty]: Start isEmpty. Operand 1394 states and 1844 transitions. [2024-11-18 18:15:45,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2024-11-18 18:15:45,104 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 18:15:45,104 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 18:15:45,120 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-18 18:15:45,309 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 18:15:45,310 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 18:15:45,310 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 18:15:45,310 INFO L85 PathProgramCache]: Analyzing trace with hash -1840237430, now seen corresponding path program 3 times [2024-11-18 18:15:45,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 18:15:45,310 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [637488133] [2024-11-18 18:15:45,310 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-18 18:15:45,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 18:15:45,595 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-18 18:15:45,595 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 18:15:47,134 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 36 proven. 50 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-18 18:15:47,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 18:15:47,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [637488133] [2024-11-18 18:15:47,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [637488133] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 18:15:47,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [157610147] [2024-11-18 18:15:47,135 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-18 18:15:47,136 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 18:15:47,136 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 18:15:47,139 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 18:15:47,140 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 18:15:47,451 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-18 18:15:47,452 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 18:15:47,457 INFO L255 TraceCheckSpWp]: Trace formula consists of 550 conjuncts, 122 conjuncts are in the unsatisfiable core [2024-11-18 18:15:47,467 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 18:15:48,282 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 65 proven. 12 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-11-18 18:15:48,282 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 18:15:49,557 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 53 proven. 29 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-18 18:15:49,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [157610147] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 18:15:49,558 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 18:15:49,558 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 16] total 34 [2024-11-18 18:15:49,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981373721] [2024-11-18 18:15:49,558 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 18:15:49,559 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-11-18 18:15:49,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 18:15:49,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-11-18 18:15:49,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=997, Unknown=0, NotChecked=0, Total=1122 [2024-11-18 18:15:49,560 INFO L87 Difference]: Start difference. First operand 1394 states and 1844 transitions. Second operand has 34 states, 34 states have (on average 6.176470588235294) internal successors, (210), 34 states have internal predecessors, (210), 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 18:15:53,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 18:15:53,358 INFO L93 Difference]: Finished difference Result 4383 states and 5820 transitions. [2024-11-18 18:15:53,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2024-11-18 18:15:53,358 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 6.176470588235294) internal successors, (210), 34 states have internal predecessors, (210), 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 92 [2024-11-18 18:15:53,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 18:15:53,365 INFO L225 Difference]: With dead ends: 4383 [2024-11-18 18:15:53,365 INFO L226 Difference]: Without dead ends: 2927 [2024-11-18 18:15:53,368 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 255 GetRequests, 161 SyntacticMatches, 1 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2130 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=945, Invalid=7985, Unknown=0, NotChecked=0, Total=8930 [2024-11-18 18:15:53,369 INFO L432 NwaCegarLoop]: 58 mSDtfsCounter, 556 mSDsluCounter, 998 mSDsCounter, 0 mSdLazyCounter, 2796 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 556 SdHoareTripleChecker+Valid, 1056 SdHoareTripleChecker+Invalid, 2836 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 2796 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-18 18:15:53,369 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [556 Valid, 1056 Invalid, 2836 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 2796 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-18 18:15:53,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2927 states. [2024-11-18 18:15:53,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2927 to 2811. [2024-11-18 18:15:53,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2811 states, 2810 states have (on average 1.291814946619217) internal successors, (3630), 2810 states have internal predecessors, (3630), 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 18:15:53,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2811 states to 2811 states and 3630 transitions. [2024-11-18 18:15:53,455 INFO L78 Accepts]: Start accepts. Automaton has 2811 states and 3630 transitions. Word has length 92 [2024-11-18 18:15:53,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 18:15:53,456 INFO L471 AbstractCegarLoop]: Abstraction has 2811 states and 3630 transitions. [2024-11-18 18:15:53,456 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 6.176470588235294) internal successors, (210), 34 states have internal predecessors, (210), 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 18:15:53,456 INFO L276 IsEmpty]: Start isEmpty. Operand 2811 states and 3630 transitions. [2024-11-18 18:15:53,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2024-11-18 18:15:53,457 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 18:15:53,457 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 18:15:53,473 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-18 18:15:53,657 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,SelfDestructingSolverStorable16 [2024-11-18 18:15:53,658 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 18:15:53,658 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 18:15:53,659 INFO L85 PathProgramCache]: Analyzing trace with hash 1448479113, now seen corresponding path program 2 times [2024-11-18 18:15:53,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 18:15:53,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [888916565] [2024-11-18 18:15:53,659 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 18:15:53,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 18:15:53,923 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-18 18:15:53,923 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 18:15:54,909 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 43 proven. 52 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-18 18:15:54,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 18:15:54,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [888916565] [2024-11-18 18:15:54,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [888916565] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 18:15:54,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1843603446] [2024-11-18 18:15:54,909 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 18:15:54,909 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 18:15:54,910 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 18:15:54,911 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 18:15:54,917 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 18:15:55,433 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-18 18:15:55,433 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 18:15:55,441 INFO L255 TraceCheckSpWp]: Trace formula consists of 741 conjuncts, 54 conjuncts are in the unsatisfiable core [2024-11-18 18:15:55,445 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 18:15:55,802 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 70 proven. 11 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-18 18:15:55,804 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 18:15:56,160 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 81 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-18 18:15:56,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1843603446] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-18 18:15:56,160 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-18 18:15:56,161 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [9, 9] total 23 [2024-11-18 18:15:56,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484156884] [2024-11-18 18:15:56,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 18:15:56,161 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-18 18:15:56,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 18:15:56,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-18 18:15:56,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=415, Unknown=0, NotChecked=0, Total=506 [2024-11-18 18:15:56,162 INFO L87 Difference]: Start difference. First operand 2811 states and 3630 transitions. Second operand has 10 states, 10 states have (on average 7.7) internal successors, (77), 10 states have internal predecessors, (77), 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 18:15:56,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 18:15:56,602 INFO L93 Difference]: Finished difference Result 6441 states and 8274 transitions. [2024-11-18 18:15:56,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-18 18:15:56,603 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.7) internal successors, (77), 10 states have internal predecessors, (77), 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 94 [2024-11-18 18:15:56,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 18:15:56,613 INFO L225 Difference]: With dead ends: 6441 [2024-11-18 18:15:56,613 INFO L226 Difference]: Without dead ends: 3613 [2024-11-18 18:15:56,617 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 176 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=107, Invalid=493, Unknown=0, NotChecked=0, Total=600 [2024-11-18 18:15:56,617 INFO L432 NwaCegarLoop]: 87 mSDtfsCounter, 89 mSDsluCounter, 195 mSDsCounter, 0 mSdLazyCounter, 490 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 282 SdHoareTripleChecker+Invalid, 499 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 490 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-18 18:15:56,618 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 282 Invalid, 499 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 490 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-18 18:15:56,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3613 states. [2024-11-18 18:15:56,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3613 to 3535. [2024-11-18 18:15:56,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3535 states, 3534 states have (on average 1.2795698924731183) internal successors, (4522), 3534 states have internal predecessors, (4522), 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 18:15:56,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3535 states to 3535 states and 4522 transitions. [2024-11-18 18:15:56,698 INFO L78 Accepts]: Start accepts. Automaton has 3535 states and 4522 transitions. Word has length 94 [2024-11-18 18:15:56,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 18:15:56,698 INFO L471 AbstractCegarLoop]: Abstraction has 3535 states and 4522 transitions. [2024-11-18 18:15:56,698 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.7) internal successors, (77), 10 states have internal predecessors, (77), 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 18:15:56,698 INFO L276 IsEmpty]: Start isEmpty. Operand 3535 states and 4522 transitions. [2024-11-18 18:15:56,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2024-11-18 18:15:56,701 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 18:15:56,701 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 18:15:56,720 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-18 18:15:56,901 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-18 18:15:56,902 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 18:15:56,902 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 18:15:56,902 INFO L85 PathProgramCache]: Analyzing trace with hash -1878894513, now seen corresponding path program 3 times [2024-11-18 18:15:56,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 18:15:56,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1064840563] [2024-11-18 18:15:56,903 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-18 18:15:56,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 18:15:57,054 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-18 18:15:57,054 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 18:15:58,020 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 33 proven. 20 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2024-11-18 18:15:58,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 18:15:58,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1064840563] [2024-11-18 18:15:58,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1064840563] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 18:15:58,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2017456054] [2024-11-18 18:15:58,022 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-18 18:15:58,022 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 18:15:58,022 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 18:15:58,024 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 18:15:58,025 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 18:15:58,573 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-18 18:15:58,573 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 18:15:58,576 INFO L255 TraceCheckSpWp]: Trace formula consists of 366 conjuncts, 78 conjuncts are in the unsatisfiable core [2024-11-18 18:15:58,580 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 18:15:59,384 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 38 proven. 15 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2024-11-18 18:15:59,385 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 18:16:00,285 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 27 proven. 26 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2024-11-18 18:16:00,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2017456054] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 18:16:00,285 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 18:16:00,285 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 12] total 29 [2024-11-18 18:16:00,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154435340] [2024-11-18 18:16:00,286 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 18:16:00,286 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-11-18 18:16:00,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 18:16:00,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-11-18 18:16:00,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=702, Unknown=0, NotChecked=0, Total=812 [2024-11-18 18:16:00,287 INFO L87 Difference]: Start difference. First operand 3535 states and 4522 transitions. Second operand has 29 states, 29 states have (on average 5.551724137931035) internal successors, (161), 29 states have internal predecessors, (161), 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 18:16:00,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 18:16:00,979 INFO L93 Difference]: Finished difference Result 3602 states and 4597 transitions. [2024-11-18 18:16:00,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-18 18:16:00,980 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 5.551724137931035) internal successors, (161), 29 states have internal predecessors, (161), 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 95 [2024-11-18 18:16:00,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 18:16:00,980 INFO L225 Difference]: With dead ends: 3602 [2024-11-18 18:16:00,980 INFO L226 Difference]: Without dead ends: 0 [2024-11-18 18:16:00,983 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 295 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=256, Invalid=1384, Unknown=0, NotChecked=0, Total=1640 [2024-11-18 18:16:00,984 INFO L432 NwaCegarLoop]: 14 mSDtfsCounter, 103 mSDsluCounter, 172 mSDsCounter, 0 mSdLazyCounter, 701 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 186 SdHoareTripleChecker+Invalid, 712 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 701 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-18 18:16:00,985 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 186 Invalid, 712 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 701 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-18 18:16:00,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-18 18:16:00,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-18 18:16:00,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 18:16:00,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-18 18:16:00,986 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 95 [2024-11-18 18:16:00,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 18:16:00,987 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-18 18:16:00,987 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 5.551724137931035) internal successors, (161), 29 states have internal predecessors, (161), 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 18:16:00,987 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-18 18:16:00,987 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-18 18:16:00,989 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-18 18:16:01,009 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 18:16:01,190 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 18:16:01,194 INFO L407 BasicCegarLoop]: Path program histogram: [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 18:16:01,196 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-11-18 18:16:01,271 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-18 18:16:01,284 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.11 06:16:01 BoogieIcfgContainer [2024-11-18 18:16:01,285 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-18 18:16:01,285 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-18 18:16:01,285 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-18 18:16:01,286 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-18 18:16:01,286 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 06:15:18" (3/4) ... [2024-11-18 18:16:01,288 INFO L142 WitnessPrinter]: Generating witness for correct program [2024-11-18 18:16:01,297 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2024-11-18 18:16:01,297 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2024-11-18 18:16:01,297 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-11-18 18:16:01,298 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-18 18:16:01,417 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-11-18 18:16:01,419 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-11-18 18:16:01,419 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-18 18:16:01,419 INFO L158 Benchmark]: Toolchain (without parser) took 44048.14ms. Allocated memory was 144.7MB in the beginning and 1.0GB in the end (delta: 878.7MB). Free memory was 103.7MB in the beginning and 531.6MB in the end (delta: -427.9MB). Peak memory consumption was 451.9MB. Max. memory is 16.1GB. [2024-11-18 18:16:01,420 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 144.7MB. Free memory was 115.5MB in the beginning and 115.4MB in the end (delta: 151.1kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-18 18:16:01,420 INFO L158 Benchmark]: CACSL2BoogieTranslator took 277.66ms. Allocated memory is still 144.7MB. Free memory was 103.2MB in the beginning and 87.0MB in the end (delta: 16.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-18 18:16:01,420 INFO L158 Benchmark]: Boogie Procedure Inliner took 62.32ms. Allocated memory is still 144.7MB. Free memory was 87.0MB in the beginning and 80.6MB in the end (delta: 6.4MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2024-11-18 18:16:01,420 INFO L158 Benchmark]: Boogie Preprocessor took 102.38ms. Allocated memory is still 144.7MB. Free memory was 80.6MB in the beginning and 76.0MB in the end (delta: 4.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-11-18 18:16:01,421 INFO L158 Benchmark]: RCFGBuilder took 784.68ms. Allocated memory was 144.7MB in the beginning and 234.9MB in the end (delta: 90.2MB). Free memory was 76.0MB in the beginning and 191.9MB in the end (delta: -115.9MB). Peak memory consumption was 35.5MB. Max. memory is 16.1GB. [2024-11-18 18:16:01,422 INFO L158 Benchmark]: TraceAbstraction took 42680.22ms. Allocated memory was 234.9MB in the beginning and 1.0GB in the end (delta: 788.5MB). Free memory was 190.9MB in the beginning and 539.9MB in the end (delta: -349.0MB). Peak memory consumption was 439.5MB. Max. memory is 16.1GB. [2024-11-18 18:16:01,422 INFO L158 Benchmark]: Witness Printer took 133.57ms. Allocated memory is still 1.0GB. Free memory was 539.9MB in the beginning and 531.6MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-18 18:16:01,423 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 144.7MB. Free memory was 115.5MB in the beginning and 115.4MB in the end (delta: 151.1kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 277.66ms. Allocated memory is still 144.7MB. Free memory was 103.2MB in the beginning and 87.0MB in the end (delta: 16.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 62.32ms. Allocated memory is still 144.7MB. Free memory was 87.0MB in the beginning and 80.6MB in the end (delta: 6.4MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Preprocessor took 102.38ms. Allocated memory is still 144.7MB. Free memory was 80.6MB in the beginning and 76.0MB in the end (delta: 4.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 784.68ms. Allocated memory was 144.7MB in the beginning and 234.9MB in the end (delta: 90.2MB). Free memory was 76.0MB in the beginning and 191.9MB in the end (delta: -115.9MB). Peak memory consumption was 35.5MB. Max. memory is 16.1GB. * TraceAbstraction took 42680.22ms. Allocated memory was 234.9MB in the beginning and 1.0GB in the end (delta: 788.5MB). Free memory was 190.9MB in the beginning and 539.9MB in the end (delta: -349.0MB). Peak memory consumption was 439.5MB. Max. memory is 16.1GB. * Witness Printer took 133.57ms. Allocated memory is still 1.0GB. Free memory was 539.9MB in the beginning and 531.6MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 21]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 62 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 42.5s, OverallIterations: 19, TraceHistogramMax: 4, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 12.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 3400 SdHoareTripleChecker+Valid, 6.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 3400 mSDsluCounter, 6160 SdHoareTripleChecker+Invalid, 5.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 5170 mSDsCounter, 120 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 11356 IncrementalHoareTripleChecker+Invalid, 11476 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 120 mSolverCounterUnsat, 990 mSDtfsCounter, 11356 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1774 GetRequests, 1323 SyntacticMatches, 2 SemanticMatches, 449 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5684 ImplicationChecksByTransitivity, 8.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=3535occurred in iteration=18, InterpolantAutomatonStates: 284, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 19 MinimizatonAttempts, 759 StatesRemovedByMinimization, 12 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.5s SsaConstructionTime, 3.5s SatisfiabilityAnalysisTime, 22.0s InterpolantComputationTime, 1813 NumberOfCodeBlocks, 1687 NumberOfCodeBlocksAsserted, 39 NumberOfCheckSat, 2463 ConstructedInterpolants, 0 QuantifiedInterpolants, 20439 SizeOfPredicates, 43 NumberOfNonLiveVariables, 5122 ConjunctsInSsa, 557 ConjunctsInUnsatCore, 38 InterpolantComputations, 11 PerfectInterpolantSequences, 1460/1811 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 87]: Loop Invariant Derived loop invariant: ((((((((var_12 == 1) && (state_28 == 0)) && (state_8 == 0)) && (state_60 == 0)) && (state_15 == 0)) && (var_22 == 1)) && (mask_SORT_1 == 1)) && (var_7 == 0)) RESULT: Ultimate proved your program to be correct! [2024-11-18 18:16:01,453 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE