./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.recount4.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8be7027f 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.recount4.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 d1f3c30f17cc68a40d1b0b31634de48071c9ae3c0808bd553c6c6ce86d938069 --- Real Ultimate output --- This is Ultimate 0.2.5-wip.dk.perfect-tracechecks-8be7027-m [2024-11-12 00:37:24,092 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-12 00:37:24,162 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2024-11-12 00:37:24,169 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-12 00:37:24,169 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-12 00:37:24,201 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-12 00:37:24,202 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-12 00:37:24,202 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-12 00:37:24,203 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-12 00:37:24,204 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-12 00:37:24,205 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-12 00:37:24,205 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-12 00:37:24,206 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-12 00:37:24,206 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-12 00:37:24,208 INFO L153 SettingsManager]: * Use SBE=true [2024-11-12 00:37:24,208 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-12 00:37:24,209 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-12 00:37:24,209 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-12 00:37:24,209 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-12 00:37:24,210 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-12 00:37:24,213 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-12 00:37:24,213 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-12 00:37:24,214 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-12 00:37:24,214 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-12 00:37:24,214 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-12 00:37:24,214 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-12 00:37:24,215 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-12 00:37:24,215 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-12 00:37:24,215 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-12 00:37:24,215 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-12 00:37:24,216 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-12 00:37:24,216 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-12 00:37:24,216 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-12 00:37:24,217 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-12 00:37:24,217 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-12 00:37:24,217 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-12 00:37:24,218 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-12 00:37:24,219 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-12 00:37:24,219 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-12 00:37:24,220 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d1f3c30f17cc68a40d1b0b31634de48071c9ae3c0808bd553c6c6ce86d938069 [2024-11-12 00:37:24,494 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-12 00:37:24,519 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-12 00:37:24,523 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-12 00:37:24,525 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-12 00:37:24,525 INFO L274 PluginConnector]: CDTParser initialized [2024-11-12 00:37:24,526 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.recount4.c [2024-11-12 00:37:25,959 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-12 00:37:26,152 INFO L384 CDTParser]: Found 1 translation units. [2024-11-12 00:37:26,153 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.recount4.c [2024-11-12 00:37:26,162 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cded6ae2a/0f52b2b914f74d44b5fc156a6c035a6d/FLAG51adf7a4b [2024-11-12 00:37:26,526 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cded6ae2a/0f52b2b914f74d44b5fc156a6c035a6d [2024-11-12 00:37:26,528 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-12 00:37:26,529 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-12 00:37:26,530 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-12 00:37:26,530 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-12 00:37:26,540 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-12 00:37:26,540 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:37:26" (1/1) ... [2024-11-12 00:37:26,543 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f991aba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:37:26, skipping insertion in model container [2024-11-12 00:37:26,544 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:37:26" (1/1) ... [2024-11-12 00:37:26,570 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-12 00:37:26,754 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.recount4.c[1258,1271] [2024-11-12 00:37:26,781 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-12 00:37:26,798 INFO L200 MainTranslator]: Completed pre-run [2024-11-12 00:37:26,807 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.recount4.c[1258,1271] [2024-11-12 00:37:26,818 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-12 00:37:26,832 INFO L204 MainTranslator]: Completed translation [2024-11-12 00:37:26,833 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:37:26 WrapperNode [2024-11-12 00:37:26,833 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-12 00:37:26,834 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-12 00:37:26,834 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-12 00:37:26,835 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-12 00:37:26,842 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:37:26" (1/1) ... [2024-11-12 00:37:26,849 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:37:26" (1/1) ... [2024-11-12 00:37:26,883 INFO L138 Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 92 [2024-11-12 00:37:26,884 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-12 00:37:26,884 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-12 00:37:26,885 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-12 00:37:26,885 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-12 00:37:26,896 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:37:26" (1/1) ... [2024-11-12 00:37:26,896 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:37:26" (1/1) ... [2024-11-12 00:37:26,900 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:37:26" (1/1) ... [2024-11-12 00:37:26,918 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]. [2024-11-12 00:37:26,919 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:37:26" (1/1) ... [2024-11-12 00:37:26,919 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:37:26" (1/1) ... [2024-11-12 00:37:26,928 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:37:26" (1/1) ... [2024-11-12 00:37:26,932 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:37:26" (1/1) ... [2024-11-12 00:37:26,937 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:37:26" (1/1) ... [2024-11-12 00:37:26,939 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:37:26" (1/1) ... [2024-11-12 00:37:26,946 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-12 00:37:26,950 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-12 00:37:26,950 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-12 00:37:26,950 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-12 00:37:26,951 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:37:26" (1/1) ... [2024-11-12 00:37:26,962 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-12 00:37:26,974 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 00:37:26,990 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) [2024-11-12 00:37:26,993 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 [2024-11-12 00:37:27,040 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-12 00:37:27,041 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-12 00:37:27,041 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-12 00:37:27,041 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-12 00:37:27,118 INFO L238 CfgBuilder]: Building ICFG [2024-11-12 00:37:27,121 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-12 00:37:27,390 INFO L? ?]: Removed 40 outVars from TransFormulas that were not future-live. [2024-11-12 00:37:27,390 INFO L287 CfgBuilder]: Performing block encoding [2024-11-12 00:37:27,411 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-12 00:37:27,412 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-12 00:37:27,412 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:37:27 BoogieIcfgContainer [2024-11-12 00:37:27,413 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-12 00:37:27,415 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-12 00:37:27,416 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-12 00:37:27,419 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-12 00:37:27,420 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 12:37:26" (1/3) ... [2024-11-12 00:37:27,421 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b89492d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:37:27, skipping insertion in model container [2024-11-12 00:37:27,421 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:37:26" (2/3) ... [2024-11-12 00:37:27,421 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b89492d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:37:27, skipping insertion in model container [2024-11-12 00:37:27,422 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:37:27" (3/3) ... [2024-11-12 00:37:27,423 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.recount4.c [2024-11-12 00:37:27,441 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-12 00:37:27,442 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-12 00:37:27,509 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-12 00:37:27,515 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;@7138e7f5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-12 00:37:27,516 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-12 00:37:27,521 INFO L276 IsEmpty]: Start isEmpty. Operand has 26 states, 24 states have (on average 1.4583333333333333) internal successors, (35), 25 states have internal predecessors, (35), 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) [2024-11-12 00:37:27,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-12 00:37:27,528 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 00:37:27,529 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 00:37:27,529 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-12 00:37:27,533 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 00:37:27,534 INFO L85 PathProgramCache]: Analyzing trace with hash 4251452, now seen corresponding path program 1 times [2024-11-12 00:37:27,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 00:37:27,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2112043259] [2024-11-12 00:37:27,542 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 00:37:27,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 00:37:27,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 00:37:28,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 00:37:28,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 00:37:28,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2112043259] [2024-11-12 00:37:28,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2112043259] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 00:37:28,138 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 00:37:28,138 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-12 00:37:28,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962437823] [2024-11-12 00:37:28,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 00:37:28,145 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-12 00:37:28,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 00:37:28,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-12 00:37:28,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-12 00:37:28,174 INFO L87 Difference]: Start difference. First operand has 26 states, 24 states have (on average 1.4583333333333333) internal successors, (35), 25 states have internal predecessors, (35), 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 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 6 states have internal predecessors, (11), 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) [2024-11-12 00:37:28,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 00:37:28,298 INFO L93 Difference]: Finished difference Result 54 states and 77 transitions. [2024-11-12 00:37:28,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-12 00:37:28,300 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 6 states have internal predecessors, (11), 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 11 [2024-11-12 00:37:28,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 00:37:28,306 INFO L225 Difference]: With dead ends: 54 [2024-11-12 00:37:28,306 INFO L226 Difference]: Without dead ends: 34 [2024-11-12 00:37:28,308 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-11-12 00:37:28,311 INFO L435 NwaCegarLoop]: 17 mSDtfsCounter, 97 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-12 00:37:28,312 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 50 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-12 00:37:28,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2024-11-12 00:37:28,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 33. [2024-11-12 00:37:28,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 32 states have (on average 1.40625) internal successors, (45), 32 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 00:37:28,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 45 transitions. [2024-11-12 00:37:28,363 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 45 transitions. Word has length 11 [2024-11-12 00:37:28,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 00:37:28,363 INFO L471 AbstractCegarLoop]: Abstraction has 33 states and 45 transitions. [2024-11-12 00:37:28,364 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 6 states have internal predecessors, (11), 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) [2024-11-12 00:37:28,364 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 45 transitions. [2024-11-12 00:37:28,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-12 00:37:28,384 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 00:37:28,384 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 00:37:28,384 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-12 00:37:28,385 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-12 00:37:28,385 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 00:37:28,385 INFO L85 PathProgramCache]: Analyzing trace with hash 1949095075, now seen corresponding path program 1 times [2024-11-12 00:37:28,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 00:37:28,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054608430] [2024-11-12 00:37:28,386 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 00:37:28,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 00:37:28,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 00:37:28,763 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 00:37:28,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 00:37:28,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2054608430] [2024-11-12 00:37:28,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2054608430] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 00:37:28,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2101454273] [2024-11-12 00:37:28,764 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 00:37:28,764 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 00:37:28,764 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 00:37:28,768 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) [2024-11-12 00:37:28,769 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-12 00:37:28,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 00:37:28,863 INFO L256 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 39 conjuncts are in the unsatisfiable core [2024-11-12 00:37:28,871 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 00:37:29,125 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 00:37:29,125 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 00:37:29,313 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 00:37:29,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2101454273] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 00:37:29,314 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 00:37:29,314 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8, 7] total 14 [2024-11-12 00:37:29,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674339313] [2024-11-12 00:37:29,315 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 00:37:29,316 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-12 00:37:29,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 00:37:29,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-12 00:37:29,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2024-11-12 00:37:29,318 INFO L87 Difference]: Start difference. First operand 33 states and 45 transitions. Second operand has 14 states, 14 states have (on average 3.5714285714285716) internal successors, (50), 14 states have internal predecessors, (50), 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) [2024-11-12 00:37:29,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 00:37:29,491 INFO L93 Difference]: Finished difference Result 47 states and 63 transitions. [2024-11-12 00:37:29,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-12 00:37:29,492 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.5714285714285716) internal successors, (50), 14 states have internal predecessors, (50), 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 20 [2024-11-12 00:37:29,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 00:37:29,493 INFO L225 Difference]: With dead ends: 47 [2024-11-12 00:37:29,494 INFO L226 Difference]: Without dead ends: 45 [2024-11-12 00:37:29,494 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=98, Invalid=244, Unknown=0, NotChecked=0, Total=342 [2024-11-12 00:37:29,495 INFO L435 NwaCegarLoop]: 28 mSDtfsCounter, 71 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 164 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-12 00:37:29,496 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 164 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-12 00:37:29,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2024-11-12 00:37:29,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 34. [2024-11-12 00:37:29,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 33 states have (on average 1.393939393939394) internal successors, (46), 33 states have internal predecessors, (46), 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) [2024-11-12 00:37:29,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 46 transitions. [2024-11-12 00:37:29,506 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 46 transitions. Word has length 20 [2024-11-12 00:37:29,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 00:37:29,506 INFO L471 AbstractCegarLoop]: Abstraction has 34 states and 46 transitions. [2024-11-12 00:37:29,507 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.5714285714285716) internal successors, (50), 14 states have internal predecessors, (50), 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) [2024-11-12 00:37:29,507 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 46 transitions. [2024-11-12 00:37:29,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-12 00:37:29,508 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 00:37:29,509 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 00:37:29,527 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-12 00:37:29,713 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 00:37:29,714 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-12 00:37:29,715 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 00:37:29,715 INFO L85 PathProgramCache]: Analyzing trace with hash 1188169764, now seen corresponding path program 1 times [2024-11-12 00:37:29,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 00:37:29,715 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211539011] [2024-11-12 00:37:29,715 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 00:37:29,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 00:37:29,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 00:37:30,090 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 00:37:30,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 00:37:30,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1211539011] [2024-11-12 00:37:30,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1211539011] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 00:37:30,091 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 00:37:30,092 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-12 00:37:30,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345032057] [2024-11-12 00:37:30,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 00:37:30,093 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-12 00:37:30,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 00:37:30,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-12 00:37:30,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-11-12 00:37:30,096 INFO L87 Difference]: Start difference. First operand 34 states and 46 transitions. Second operand has 9 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 9 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 00:37:30,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 00:37:30,259 INFO L93 Difference]: Finished difference Result 84 states and 113 transitions. [2024-11-12 00:37:30,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-12 00:37:30,260 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 9 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2024-11-12 00:37:30,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 00:37:30,262 INFO L225 Difference]: With dead ends: 84 [2024-11-12 00:37:30,263 INFO L226 Difference]: Without dead ends: 56 [2024-11-12 00:37:30,264 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2024-11-12 00:37:30,265 INFO L435 NwaCegarLoop]: 17 mSDtfsCounter, 74 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-12 00:37:30,266 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 74 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-12 00:37:30,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2024-11-12 00:37:30,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 44. [2024-11-12 00:37:30,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 43 states have (on average 1.372093023255814) internal successors, (59), 43 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) [2024-11-12 00:37:30,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 59 transitions. [2024-11-12 00:37:30,276 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 59 transitions. Word has length 21 [2024-11-12 00:37:30,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 00:37:30,276 INFO L471 AbstractCegarLoop]: Abstraction has 44 states and 59 transitions. [2024-11-12 00:37:30,276 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 9 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 00:37:30,277 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 59 transitions. [2024-11-12 00:37:30,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-11-12 00:37:30,277 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 00:37:30,277 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 00:37:30,278 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-12 00:37:30,278 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-12 00:37:30,279 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 00:37:30,279 INFO L85 PathProgramCache]: Analyzing trace with hash -256943541, now seen corresponding path program 1 times [2024-11-12 00:37:30,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 00:37:30,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [127878661] [2024-11-12 00:37:30,280 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 00:37:30,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 00:37:30,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 00:37:30,832 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 00:37:30,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 00:37:30,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [127878661] [2024-11-12 00:37:30,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [127878661] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 00:37:30,833 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 00:37:30,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-12 00:37:30,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360362956] [2024-11-12 00:37:30,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 00:37:30,833 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-12 00:37:30,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 00:37:30,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-12 00:37:30,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-11-12 00:37:30,838 INFO L87 Difference]: Start difference. First operand 44 states and 59 transitions. Second operand has 10 states, 10 states have (on average 2.2) internal successors, (22), 10 states have internal predecessors, (22), 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) [2024-11-12 00:37:31,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 00:37:31,080 INFO L93 Difference]: Finished difference Result 94 states and 126 transitions. [2024-11-12 00:37:31,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-12 00:37:31,084 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.2) internal successors, (22), 10 states have internal predecessors, (22), 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 22 [2024-11-12 00:37:31,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 00:37:31,084 INFO L225 Difference]: With dead ends: 94 [2024-11-12 00:37:31,085 INFO L226 Difference]: Without dead ends: 66 [2024-11-12 00:37:31,085 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2024-11-12 00:37:31,086 INFO L435 NwaCegarLoop]: 21 mSDtfsCounter, 71 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-12 00:37:31,088 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 91 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-12 00:37:31,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2024-11-12 00:37:31,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 55. [2024-11-12 00:37:31,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 54 states have (on average 1.3703703703703705) internal successors, (74), 54 states have internal predecessors, (74), 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) [2024-11-12 00:37:31,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 74 transitions. [2024-11-12 00:37:31,098 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 74 transitions. Word has length 22 [2024-11-12 00:37:31,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 00:37:31,099 INFO L471 AbstractCegarLoop]: Abstraction has 55 states and 74 transitions. [2024-11-12 00:37:31,099 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.2) internal successors, (22), 10 states have internal predecessors, (22), 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) [2024-11-12 00:37:31,099 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 74 transitions. [2024-11-12 00:37:31,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-12 00:37:31,100 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 00:37:31,100 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 00:37:31,101 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-12 00:37:31,101 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-12 00:37:31,101 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 00:37:31,102 INFO L85 PathProgramCache]: Analyzing trace with hash 393053311, now seen corresponding path program 1 times [2024-11-12 00:37:31,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 00:37:31,103 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849959899] [2024-11-12 00:37:31,103 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 00:37:31,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 00:37:31,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 00:37:31,774 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 00:37:31,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 00:37:31,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849959899] [2024-11-12 00:37:31,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [849959899] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 00:37:31,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2102555491] [2024-11-12 00:37:31,776 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 00:37:31,776 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 00:37:31,776 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 00:37:31,778 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) [2024-11-12 00:37:31,779 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-12 00:37:31,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 00:37:31,878 WARN L254 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 66 conjuncts are in the unsatisfiable core [2024-11-12 00:37:31,885 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 00:37:32,377 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 00:37:32,378 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 00:37:35,211 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 00:37:35,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2102555491] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 00:37:35,211 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 00:37:35,211 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 15] total 36 [2024-11-12 00:37:35,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980430263] [2024-11-12 00:37:35,212 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 00:37:35,212 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-11-12 00:37:35,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 00:37:35,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-11-12 00:37:35,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=179, Invalid=1081, Unknown=0, NotChecked=0, Total=1260 [2024-11-12 00:37:35,214 INFO L87 Difference]: Start difference. First operand 55 states and 74 transitions. Second operand has 36 states, 36 states have (on average 1.7777777777777777) internal successors, (64), 36 states have internal predecessors, (64), 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) [2024-11-12 00:37:36,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 00:37:36,206 INFO L93 Difference]: Finished difference Result 135 states and 184 transitions. [2024-11-12 00:37:36,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-12 00:37:36,207 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 1.7777777777777777) internal successors, (64), 36 states have internal predecessors, (64), 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 23 [2024-11-12 00:37:36,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 00:37:36,211 INFO L225 Difference]: With dead ends: 135 [2024-11-12 00:37:36,211 INFO L226 Difference]: Without dead ends: 107 [2024-11-12 00:37:36,215 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 853 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=511, Invalid=2569, Unknown=0, NotChecked=0, Total=3080 [2024-11-12 00:37:36,216 INFO L435 NwaCegarLoop]: 6 mSDtfsCounter, 195 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 511 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 195 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 531 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 511 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-12 00:37:36,216 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [195 Valid, 67 Invalid, 531 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 511 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-12 00:37:36,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2024-11-12 00:37:36,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 77. [2024-11-12 00:37:36,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 76 states have (on average 1.3421052631578947) internal successors, (102), 76 states have internal predecessors, (102), 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) [2024-11-12 00:37:36,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 102 transitions. [2024-11-12 00:37:36,231 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 102 transitions. Word has length 23 [2024-11-12 00:37:36,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 00:37:36,232 INFO L471 AbstractCegarLoop]: Abstraction has 77 states and 102 transitions. [2024-11-12 00:37:36,232 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 1.7777777777777777) internal successors, (64), 36 states have internal predecessors, (64), 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) [2024-11-12 00:37:36,232 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 102 transitions. [2024-11-12 00:37:36,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-11-12 00:37:36,235 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 00:37:36,235 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 00:37:36,254 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-12 00:37:36,436 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 00:37:36,436 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-12 00:37:36,437 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 00:37:36,437 INFO L85 PathProgramCache]: Analyzing trace with hash 23123751, now seen corresponding path program 1 times [2024-11-12 00:37:36,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 00:37:36,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226300747] [2024-11-12 00:37:36,437 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 00:37:36,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 00:37:36,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 00:37:36,895 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-12 00:37:36,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 00:37:36,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [226300747] [2024-11-12 00:37:36,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [226300747] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 00:37:36,895 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 00:37:36,895 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-12 00:37:36,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855659102] [2024-11-12 00:37:36,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 00:37:36,896 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-12 00:37:36,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 00:37:36,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-12 00:37:36,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-11-12 00:37:36,897 INFO L87 Difference]: Start difference. First operand 77 states and 102 transitions. Second operand has 9 states, 9 states have (on average 3.888888888888889) internal successors, (35), 9 states have internal predecessors, (35), 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) [2024-11-12 00:37:36,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 00:37:36,969 INFO L93 Difference]: Finished difference Result 143 states and 190 transitions. [2024-11-12 00:37:36,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-12 00:37:36,970 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.888888888888889) internal successors, (35), 9 states have internal predecessors, (35), 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 41 [2024-11-12 00:37:36,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 00:37:36,971 INFO L225 Difference]: With dead ends: 143 [2024-11-12 00:37:36,971 INFO L226 Difference]: Without dead ends: 100 [2024-11-12 00:37:36,971 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-11-12 00:37:36,972 INFO L435 NwaCegarLoop]: 42 mSDtfsCounter, 24 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 198 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-12 00:37:36,972 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 198 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-12 00:37:36,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2024-11-12 00:37:36,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 82. [2024-11-12 00:37:36,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 81 states have (on average 1.345679012345679) internal successors, (109), 81 states have internal predecessors, (109), 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) [2024-11-12 00:37:36,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 109 transitions. [2024-11-12 00:37:36,978 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 109 transitions. Word has length 41 [2024-11-12 00:37:36,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 00:37:36,978 INFO L471 AbstractCegarLoop]: Abstraction has 82 states and 109 transitions. [2024-11-12 00:37:36,978 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.888888888888889) internal successors, (35), 9 states have internal predecessors, (35), 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) [2024-11-12 00:37:36,979 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 109 transitions. [2024-11-12 00:37:36,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-11-12 00:37:36,980 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 00:37:36,980 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 00:37:36,980 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-12 00:37:36,980 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-12 00:37:36,980 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 00:37:36,981 INFO L85 PathProgramCache]: Analyzing trace with hash -998409867, now seen corresponding path program 1 times [2024-11-12 00:37:36,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 00:37:36,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271494716] [2024-11-12 00:37:36,981 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 00:37:36,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 00:37:37,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 00:37:37,257 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 33 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-12 00:37:37,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 00:37:37,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1271494716] [2024-11-12 00:37:37,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1271494716] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 00:37:37,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1021727744] [2024-11-12 00:37:37,258 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 00:37:37,258 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 00:37:37,258 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 00:37:37,260 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) [2024-11-12 00:37:37,262 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-12 00:37:37,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 00:37:37,357 INFO L256 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-12 00:37:37,359 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 00:37:37,493 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 30 proven. 4 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-12 00:37:37,493 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 00:37:37,646 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 30 proven. 4 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-12 00:37:37,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1021727744] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 00:37:37,647 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 00:37:37,647 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 14 [2024-11-12 00:37:37,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248503439] [2024-11-12 00:37:37,647 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 00:37:37,648 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-12 00:37:37,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 00:37:37,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-12 00:37:37,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2024-11-12 00:37:37,649 INFO L87 Difference]: Start difference. First operand 82 states and 109 transitions. Second operand has 14 states, 14 states have (on average 4.857142857142857) internal successors, (68), 14 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 00:37:37,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 00:37:37,743 INFO L93 Difference]: Finished difference Result 156 states and 203 transitions. [2024-11-12 00:37:37,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-12 00:37:37,747 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.857142857142857) internal successors, (68), 14 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2024-11-12 00:37:37,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 00:37:37,747 INFO L225 Difference]: With dead ends: 156 [2024-11-12 00:37:37,748 INFO L226 Difference]: Without dead ends: 102 [2024-11-12 00:37:37,748 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 77 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=232, Unknown=0, NotChecked=0, Total=306 [2024-11-12 00:37:37,749 INFO L435 NwaCegarLoop]: 22 mSDtfsCounter, 36 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-12 00:37:37,749 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 124 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-12 00:37:37,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2024-11-12 00:37:37,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 84. [2024-11-12 00:37:37,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 83 states have (on average 1.3493975903614457) internal successors, (112), 83 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 00:37:37,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 112 transitions. [2024-11-12 00:37:37,762 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 112 transitions. Word has length 42 [2024-11-12 00:37:37,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 00:37:37,765 INFO L471 AbstractCegarLoop]: Abstraction has 84 states and 112 transitions. [2024-11-12 00:37:37,765 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.857142857142857) internal successors, (68), 14 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 00:37:37,765 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 112 transitions. [2024-11-12 00:37:37,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-11-12 00:37:37,766 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 00:37:37,766 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 00:37:37,785 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-12 00:37:37,967 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 00:37:37,968 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-12 00:37:37,968 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 00:37:37,968 INFO L85 PathProgramCache]: Analyzing trace with hash -379972658, now seen corresponding path program 1 times [2024-11-12 00:37:37,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 00:37:37,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631852626] [2024-11-12 00:37:37,968 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 00:37:37,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 00:37:38,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 00:37:38,900 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 27 proven. 17 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-12 00:37:38,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 00:37:38,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631852626] [2024-11-12 00:37:38,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [631852626] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 00:37:38,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [583526321] [2024-11-12 00:37:38,901 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 00:37:38,901 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 00:37:38,901 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 00:37:38,903 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) [2024-11-12 00:37:38,904 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-12 00:37:38,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 00:37:39,000 INFO L256 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 48 conjuncts are in the unsatisfiable core [2024-11-12 00:37:39,004 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 00:37:39,472 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 25 proven. 19 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-12 00:37:39,472 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 00:37:40,156 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 26 proven. 18 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-12 00:37:40,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [583526321] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 00:37:40,156 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 00:37:40,156 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11, 11] total 32 [2024-11-12 00:37:40,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53997095] [2024-11-12 00:37:40,157 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 00:37:40,158 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-12 00:37:40,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 00:37:40,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-12 00:37:40,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=852, Unknown=0, NotChecked=0, Total=992 [2024-11-12 00:37:40,160 INFO L87 Difference]: Start difference. First operand 84 states and 112 transitions. Second operand has 32 states, 32 states have (on average 3.28125) internal successors, (105), 32 states have internal predecessors, (105), 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) [2024-11-12 00:37:41,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 00:37:41,003 INFO L93 Difference]: Finished difference Result 252 states and 327 transitions. [2024-11-12 00:37:41,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-11-12 00:37:41,006 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.28125) internal successors, (105), 32 states have internal predecessors, (105), 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 42 [2024-11-12 00:37:41,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 00:37:41,007 INFO L225 Difference]: With dead ends: 252 [2024-11-12 00:37:41,007 INFO L226 Difference]: Without dead ends: 201 [2024-11-12 00:37:41,009 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 835 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=649, Invalid=2773, Unknown=0, NotChecked=0, Total=3422 [2024-11-12 00:37:41,009 INFO L435 NwaCegarLoop]: 6 mSDtfsCounter, 248 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 451 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 248 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 468 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 451 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-12 00:37:41,010 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [248 Valid, 67 Invalid, 468 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 451 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-12 00:37:41,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2024-11-12 00:37:41,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 103. [2024-11-12 00:37:41,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 102 states have (on average 1.3529411764705883) internal successors, (138), 102 states have internal predecessors, (138), 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) [2024-11-12 00:37:41,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 138 transitions. [2024-11-12 00:37:41,017 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 138 transitions. Word has length 42 [2024-11-12 00:37:41,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 00:37:41,018 INFO L471 AbstractCegarLoop]: Abstraction has 103 states and 138 transitions. [2024-11-12 00:37:41,018 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.28125) internal successors, (105), 32 states have internal predecessors, (105), 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) [2024-11-12 00:37:41,018 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 138 transitions. [2024-11-12 00:37:41,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-11-12 00:37:41,019 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 00:37:41,019 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 00:37:41,036 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-12 00:37:41,220 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 00:37:41,220 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-12 00:37:41,221 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 00:37:41,221 INFO L85 PathProgramCache]: Analyzing trace with hash -1624718367, now seen corresponding path program 2 times [2024-11-12 00:37:41,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 00:37:41,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380444966] [2024-11-12 00:37:41,221 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 00:37:41,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 00:37:41,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 00:37:42,232 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 35 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 00:37:42,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 00:37:42,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [380444966] [2024-11-12 00:37:42,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [380444966] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 00:37:42,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [803936076] [2024-11-12 00:37:42,233 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-12 00:37:42,233 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 00:37:42,233 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 00:37:42,235 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) [2024-11-12 00:37:42,237 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-12 00:37:42,341 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-12 00:37:42,341 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 00:37:42,343 INFO L256 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 87 conjuncts are in the unsatisfiable core [2024-11-12 00:37:42,348 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 00:37:42,999 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 29 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 00:37:42,999 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 00:37:47,288 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 20 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 00:37:47,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [803936076] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 00:37:47,288 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 00:37:47,288 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 15, 17] total 48 [2024-11-12 00:37:47,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512013523] [2024-11-12 00:37:47,289 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 00:37:47,289 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2024-11-12 00:37:47,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 00:37:47,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2024-11-12 00:37:47,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=277, Invalid=1979, Unknown=0, NotChecked=0, Total=2256 [2024-11-12 00:37:47,291 INFO L87 Difference]: Start difference. First operand 103 states and 138 transitions. Second operand has 48 states, 48 states have (on average 2.3125) internal successors, (111), 48 states have internal predecessors, (111), 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) [2024-11-12 00:37:48,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 00:37:48,968 INFO L93 Difference]: Finished difference Result 360 states and 472 transitions. [2024-11-12 00:37:48,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2024-11-12 00:37:48,968 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 2.3125) internal successors, (111), 48 states have internal predecessors, (111), 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 43 [2024-11-12 00:37:48,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 00:37:48,970 INFO L225 Difference]: With dead ends: 360 [2024-11-12 00:37:48,970 INFO L226 Difference]: Without dead ends: 290 [2024-11-12 00:37:48,972 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2068 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=828, Invalid=5024, Unknown=0, NotChecked=0, Total=5852 [2024-11-12 00:37:48,973 INFO L435 NwaCegarLoop]: 5 mSDtfsCounter, 290 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 906 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 290 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 938 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 906 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-12 00:37:48,973 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [290 Valid, 88 Invalid, 938 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 906 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-12 00:37:48,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2024-11-12 00:37:48,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 183. [2024-11-12 00:37:48,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 182 states have (on average 1.3516483516483517) internal successors, (246), 182 states have internal predecessors, (246), 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) [2024-11-12 00:37:48,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 246 transitions. [2024-11-12 00:37:48,983 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 246 transitions. Word has length 43 [2024-11-12 00:37:48,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 00:37:48,983 INFO L471 AbstractCegarLoop]: Abstraction has 183 states and 246 transitions. [2024-11-12 00:37:48,984 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 2.3125) internal successors, (111), 48 states have internal predecessors, (111), 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) [2024-11-12 00:37:48,984 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 246 transitions. [2024-11-12 00:37:48,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-11-12 00:37:48,985 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 00:37:48,985 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 00:37:49,004 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-12 00:37:49,186 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 00:37:49,186 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-12 00:37:49,187 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 00:37:49,187 INFO L85 PathProgramCache]: Analyzing trace with hash -1338323453, now seen corresponding path program 1 times [2024-11-12 00:37:49,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 00:37:49,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [445097408] [2024-11-12 00:37:49,187 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 00:37:49,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 00:37:49,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 00:37:50,416 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 7 proven. 38 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-12 00:37:50,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 00:37:50,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [445097408] [2024-11-12 00:37:50,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [445097408] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 00:37:50,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [845062529] [2024-11-12 00:37:50,417 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 00:37:50,417 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 00:37:50,417 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 00:37:50,419 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) [2024-11-12 00:37:50,421 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-12 00:37:50,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 00:37:50,535 INFO L256 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 60 conjuncts are in the unsatisfiable core [2024-11-12 00:37:50,539 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 00:37:51,347 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 7 proven. 39 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-12 00:37:51,348 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 00:37:53,499 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 6 proven. 40 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-12 00:37:53,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [845062529] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 00:37:53,499 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 00:37:53,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 16, 16] total 47 [2024-11-12 00:37:53,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143251727] [2024-11-12 00:37:53,500 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 00:37:53,500 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2024-11-12 00:37:53,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 00:37:53,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2024-11-12 00:37:53,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=327, Invalid=1835, Unknown=0, NotChecked=0, Total=2162 [2024-11-12 00:37:53,502 INFO L87 Difference]: Start difference. First operand 183 states and 246 transitions. Second operand has 47 states, 47 states have (on average 2.617021276595745) internal successors, (123), 47 states have internal predecessors, (123), 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) [2024-11-12 00:37:55,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 00:37:55,263 INFO L93 Difference]: Finished difference Result 391 states and 506 transitions. [2024-11-12 00:37:55,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2024-11-12 00:37:55,263 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 2.617021276595745) internal successors, (123), 47 states have internal predecessors, (123), 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 44 [2024-11-12 00:37:55,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 00:37:55,265 INFO L225 Difference]: With dead ends: 391 [2024-11-12 00:37:55,265 INFO L226 Difference]: Without dead ends: 389 [2024-11-12 00:37:55,267 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 66 SyntacticMatches, 1 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2282 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=1255, Invalid=6755, Unknown=0, NotChecked=0, Total=8010 [2024-11-12 00:37:55,267 INFO L435 NwaCegarLoop]: 8 mSDtfsCounter, 280 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 926 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 280 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 935 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 926 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-12 00:37:55,268 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [280 Valid, 104 Invalid, 935 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 926 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-12 00:37:55,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 389 states. [2024-11-12 00:37:55,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 389 to 202. [2024-11-12 00:37:55,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 201 states have (on average 1.3482587064676617) internal successors, (271), 201 states have internal predecessors, (271), 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) [2024-11-12 00:37:55,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 271 transitions. [2024-11-12 00:37:55,279 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 271 transitions. Word has length 44 [2024-11-12 00:37:55,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 00:37:55,279 INFO L471 AbstractCegarLoop]: Abstraction has 202 states and 271 transitions. [2024-11-12 00:37:55,279 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 2.617021276595745) internal successors, (123), 47 states have internal predecessors, (123), 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) [2024-11-12 00:37:55,279 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 271 transitions. [2024-11-12 00:37:55,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-11-12 00:37:55,280 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 00:37:55,281 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 00:37:55,299 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-12 00:37:55,481 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 00:37:55,481 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-12 00:37:55,482 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 00:37:55,482 INFO L85 PathProgramCache]: Analyzing trace with hash 941706665, now seen corresponding path program 2 times [2024-11-12 00:37:55,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 00:37:55,482 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100955123] [2024-11-12 00:37:55,482 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 00:37:55,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 00:37:55,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 00:37:56,719 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 14 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 00:37:56,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 00:37:56,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1100955123] [2024-11-12 00:37:56,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1100955123] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 00:37:56,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [57812686] [2024-11-12 00:37:56,720 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-12 00:37:56,720 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 00:37:56,720 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 00:37:56,722 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) [2024-11-12 00:37:56,723 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-12 00:37:56,849 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-12 00:37:56,849 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 00:37:56,853 INFO L256 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 117 conjuncts are in the unsatisfiable core [2024-11-12 00:37:56,860 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 00:37:57,993 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 9 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 00:37:57,994 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 00:38:07,585 WARN L286 SmtUtils]: Spent 6.31s on a formula simplification. DAG size of input: 63 DAG size of output: 25 (called from [L 188] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionTir.tryToEliminateOne)