./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_valuebound1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4a390ef5 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_valuebound1.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 9439004819e2e34c2ab2e87057bca89732394fc53eb02ecb90192bb8fac7667a --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4a390ef-m [2024-10-24 00:10:44,969 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-24 00:10:45,034 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-24 00:10:45,040 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-24 00:10:45,040 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-24 00:10:45,073 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-24 00:10:45,074 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-24 00:10:45,074 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-24 00:10:45,075 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-24 00:10:45,076 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-24 00:10:45,076 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-24 00:10:45,077 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-24 00:10:45,077 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-24 00:10:45,078 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-24 00:10:45,080 INFO L153 SettingsManager]: * Use SBE=true [2024-10-24 00:10:45,080 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-24 00:10:45,080 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-24 00:10:45,081 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-24 00:10:45,081 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-24 00:10:45,081 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-24 00:10:45,081 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-24 00:10:45,083 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-24 00:10:45,084 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-24 00:10:45,084 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-24 00:10:45,086 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-24 00:10:45,086 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-24 00:10:45,086 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-24 00:10:45,087 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-24 00:10:45,087 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-24 00:10:45,087 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-24 00:10:45,087 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-24 00:10:45,087 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-24 00:10:45,088 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 00:10:45,088 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-24 00:10:45,088 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-24 00:10:45,088 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-24 00:10:45,089 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-24 00:10:45,090 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-24 00:10:45,090 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-24 00:10:45,090 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-24 00:10:45,090 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-24 00:10:45,091 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-24 00:10:45,091 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9439004819e2e34c2ab2e87057bca89732394fc53eb02ecb90192bb8fac7667a [2024-10-24 00:10:45,377 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-24 00:10:45,402 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-24 00:10:45,405 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-24 00:10:45,406 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-24 00:10:45,406 INFO L274 PluginConnector]: CDTParser initialized [2024-10-24 00:10:45,408 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_valuebound1.c [2024-10-24 00:10:46,926 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-24 00:10:47,158 INFO L384 CDTParser]: Found 1 translation units. [2024-10-24 00:10:47,159 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_valuebound1.c [2024-10-24 00:10:47,167 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e4139c1fa/b785b2c5c48b43208d85e5fee44330bd/FLAG13ee12e87 [2024-10-24 00:10:47,181 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e4139c1fa/b785b2c5c48b43208d85e5fee44330bd [2024-10-24 00:10:47,183 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-24 00:10:47,185 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-24 00:10:47,186 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-24 00:10:47,187 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-24 00:10:47,194 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-24 00:10:47,194 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 12:10:47" (1/1) ... [2024-10-24 00:10:47,195 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ba2717f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:10:47, skipping insertion in model container [2024-10-24 00:10:47,195 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 12:10:47" (1/1) ... [2024-10-24 00:10:47,221 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-24 00:10:47,397 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_valuebound1.c[490,503] [2024-10-24 00:10:47,430 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 00:10:47,441 INFO L200 MainTranslator]: Completed pre-run [2024-10-24 00:10:47,455 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_valuebound1.c[490,503] [2024-10-24 00:10:47,471 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 00:10:47,491 INFO L204 MainTranslator]: Completed translation [2024-10-24 00:10:47,492 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:10:47 WrapperNode [2024-10-24 00:10:47,492 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-24 00:10:47,493 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-24 00:10:47,494 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-24 00:10:47,495 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-24 00:10:47,502 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:10:47" (1/1) ... [2024-10-24 00:10:47,509 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:10:47" (1/1) ... [2024-10-24 00:10:47,535 INFO L138 Inliner]: procedures = 14, calls = 19, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 79 [2024-10-24 00:10:47,535 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-24 00:10:47,536 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-24 00:10:47,536 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-24 00:10:47,536 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-24 00:10:47,547 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:10:47" (1/1) ... [2024-10-24 00:10:47,548 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:10:47" (1/1) ... [2024-10-24 00:10:47,550 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:10:47" (1/1) ... [2024-10-24 00:10:47,568 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-10-24 00:10:47,568 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:10:47" (1/1) ... [2024-10-24 00:10:47,568 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:10:47" (1/1) ... [2024-10-24 00:10:47,572 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:10:47" (1/1) ... [2024-10-24 00:10:47,575 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:10:47" (1/1) ... [2024-10-24 00:10:47,576 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:10:47" (1/1) ... [2024-10-24 00:10:47,577 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:10:47" (1/1) ... [2024-10-24 00:10:47,582 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-24 00:10:47,584 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-24 00:10:47,586 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-24 00:10:47,586 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-24 00:10:47,587 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:10:47" (1/1) ... [2024-10-24 00:10:47,596 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 00:10:47,609 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 00:10:47,630 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-24 00:10:47,636 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-24 00:10:47,683 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-24 00:10:47,684 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-10-24 00:10:47,684 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-10-24 00:10:47,684 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-24 00:10:47,684 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-24 00:10:47,684 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-24 00:10:47,684 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-10-24 00:10:47,686 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-10-24 00:10:47,750 INFO L238 CfgBuilder]: Building ICFG [2024-10-24 00:10:47,752 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-24 00:10:47,969 INFO L? ?]: Removed 11 outVars from TransFormulas that were not future-live. [2024-10-24 00:10:47,970 INFO L287 CfgBuilder]: Performing block encoding [2024-10-24 00:10:47,995 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-24 00:10:47,995 INFO L314 CfgBuilder]: Removed 2 assume(true) statements. [2024-10-24 00:10:47,996 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 12:10:47 BoogieIcfgContainer [2024-10-24 00:10:47,996 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-24 00:10:48,002 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-24 00:10:48,002 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-24 00:10:48,005 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-24 00:10:48,006 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 12:10:47" (1/3) ... [2024-10-24 00:10:48,006 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69c3f610 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 12:10:48, skipping insertion in model container [2024-10-24 00:10:48,006 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:10:47" (2/3) ... [2024-10-24 00:10:48,007 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69c3f610 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 12:10:48, skipping insertion in model container [2024-10-24 00:10:48,007 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 12:10:47" (3/3) ... [2024-10-24 00:10:48,008 INFO L112 eAbstractionObserver]: Analyzing ICFG egcd2-ll_valuebound1.c [2024-10-24 00:10:48,024 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-24 00:10:48,025 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-24 00:10:48,084 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-24 00:10:48,090 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;@35c8ee5c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-24 00:10:48,091 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-24 00:10:48,095 INFO L276 IsEmpty]: Start isEmpty. Operand has 32 states, 16 states have (on average 1.5625) internal successors, (25), 18 states have internal predecessors, (25), 12 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-10-24 00:10:48,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-10-24 00:10:48,102 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 00:10:48,103 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 00:10:48,103 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 00:10:48,108 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 00:10:48,108 INFO L85 PathProgramCache]: Analyzing trace with hash 1865535902, now seen corresponding path program 1 times [2024-10-24 00:10:48,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 00:10:48,118 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [775897552] [2024-10-24 00:10:48,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 00:10:48,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 00:10:48,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:10:48,283 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 00:10:48,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:10:48,296 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-24 00:10:48,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:10:48,307 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-24 00:10:48,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:10:48,313 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-10-24 00:10:48,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:10:48,324 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-10-24 00:10:48,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:10:48,331 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-10-24 00:10:48,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:10:48,337 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-10-24 00:10:48,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 00:10:48,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [775897552] [2024-10-24 00:10:48,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [775897552] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 00:10:48,339 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 00:10:48,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-24 00:10:48,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852231561] [2024-10-24 00:10:48,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 00:10:48,345 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-24 00:10:48,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 00:10:48,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-24 00:10:48,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-24 00:10:48,369 INFO L87 Difference]: Start difference. First operand has 32 states, 16 states have (on average 1.5625) internal successors, (25), 18 states have internal predecessors, (25), 12 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 2 states have call successors, (6) [2024-10-24 00:10:48,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 00:10:48,395 INFO L93 Difference]: Finished difference Result 62 states and 107 transitions. [2024-10-24 00:10:48,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-24 00:10:48,399 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 2 states have call successors, (6) Word has length 38 [2024-10-24 00:10:48,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 00:10:48,410 INFO L225 Difference]: With dead ends: 62 [2024-10-24 00:10:48,414 INFO L226 Difference]: Without dead ends: 30 [2024-10-24 00:10:48,417 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-24 00:10:48,424 INFO L432 NwaCegarLoop]: 41 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 00:10:48,425 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 41 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 00:10:48,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2024-10-24 00:10:48,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2024-10-24 00:10:48,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 15 states have (on average 1.2) internal successors, (18), 17 states have internal predecessors, (18), 12 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2024-10-24 00:10:48,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 41 transitions. [2024-10-24 00:10:48,473 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 41 transitions. Word has length 38 [2024-10-24 00:10:48,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 00:10:48,474 INFO L471 AbstractCegarLoop]: Abstraction has 30 states and 41 transitions. [2024-10-24 00:10:48,474 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 2 states have call successors, (6) [2024-10-24 00:10:48,474 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 41 transitions. [2024-10-24 00:10:48,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-10-24 00:10:48,477 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 00:10:48,478 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 00:10:48,478 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-24 00:10:48,479 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 00:10:48,479 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 00:10:48,479 INFO L85 PathProgramCache]: Analyzing trace with hash -279596905, now seen corresponding path program 1 times [2024-10-24 00:10:48,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 00:10:48,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [198717525] [2024-10-24 00:10:48,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 00:10:48,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 00:10:48,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:10:48,681 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 00:10:48,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:10:48,686 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-24 00:10:48,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:10:48,690 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-24 00:10:48,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:10:48,695 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-10-24 00:10:48,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:10:48,725 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-10-24 00:10:48,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:10:48,734 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-10-24 00:10:48,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:10:48,747 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-10-24 00:10:48,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 00:10:48,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [198717525] [2024-10-24 00:10:48,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [198717525] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 00:10:48,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [703282877] [2024-10-24 00:10:48,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 00:10:48,753 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 00:10:48,754 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 00:10:48,758 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 00:10:48,761 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-24 00:10:48,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:10:48,841 INFO L255 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-10-24 00:10:48,848 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 00:10:49,130 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 3 proven. 12 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-10-24 00:10:49,130 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 00:10:49,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [703282877] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 00:10:49,312 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-24 00:10:49,312 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 9] total 11 [2024-10-24 00:10:49,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740595313] [2024-10-24 00:10:49,314 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-24 00:10:49,315 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-24 00:10:49,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 00:10:49,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-24 00:10:49,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2024-10-24 00:10:49,318 INFO L87 Difference]: Start difference. First operand 30 states and 41 transitions. Second operand has 11 states, 10 states have (on average 1.9) internal successors, (19), 8 states have internal predecessors, (19), 6 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (11), 5 states have call predecessors, (11), 4 states have call successors, (11) [2024-10-24 00:10:49,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 00:10:49,596 INFO L93 Difference]: Finished difference Result 51 states and 68 transitions. [2024-10-24 00:10:49,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-24 00:10:49,597 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 1.9) internal successors, (19), 8 states have internal predecessors, (19), 6 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (11), 5 states have call predecessors, (11), 4 states have call successors, (11) Word has length 39 [2024-10-24 00:10:49,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 00:10:49,599 INFO L225 Difference]: With dead ends: 51 [2024-10-24 00:10:49,599 INFO L226 Difference]: Without dead ends: 43 [2024-10-24 00:10:49,600 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=54, Invalid=252, Unknown=0, NotChecked=0, Total=306 [2024-10-24 00:10:49,601 INFO L432 NwaCegarLoop]: 28 mSDtfsCounter, 33 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 207 SdHoareTripleChecker+Invalid, 185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-24 00:10:49,601 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 207 Invalid, 185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-24 00:10:49,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2024-10-24 00:10:49,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 42. [2024-10-24 00:10:49,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 23 states have internal predecessors, (26), 16 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2024-10-24 00:10:49,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 57 transitions. [2024-10-24 00:10:49,614 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 57 transitions. Word has length 39 [2024-10-24 00:10:49,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 00:10:49,614 INFO L471 AbstractCegarLoop]: Abstraction has 42 states and 57 transitions. [2024-10-24 00:10:49,615 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 1.9) internal successors, (19), 8 states have internal predecessors, (19), 6 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (11), 5 states have call predecessors, (11), 4 states have call successors, (11) [2024-10-24 00:10:49,615 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 57 transitions. [2024-10-24 00:10:49,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-10-24 00:10:49,616 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 00:10:49,616 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 00:10:49,634 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-24 00:10:49,820 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 00:10:49,821 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 00:10:49,821 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 00:10:49,822 INFO L85 PathProgramCache]: Analyzing trace with hash -76887146, now seen corresponding path program 1 times [2024-10-24 00:10:49,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 00:10:49,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1158884287] [2024-10-24 00:10:49,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 00:10:49,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 00:10:49,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-24 00:10:49,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [32408604] [2024-10-24 00:10:49,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 00:10:49,861 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 00:10:49,861 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 00:10:49,863 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 00:10:49,872 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-24 00:10:49,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:10:49,927 INFO L255 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-24 00:10:49,929 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 00:10:49,971 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-10-24 00:10:49,971 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 00:10:49,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 00:10:49,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1158884287] [2024-10-24 00:10:49,972 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-24 00:10:49,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [32408604] [2024-10-24 00:10:49,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [32408604] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 00:10:49,973 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 00:10:49,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-24 00:10:49,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49643290] [2024-10-24 00:10:49,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 00:10:49,974 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 00:10:49,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 00:10:49,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 00:10:49,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-24 00:10:49,975 INFO L87 Difference]: Start difference. First operand 42 states and 57 transitions. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-10-24 00:10:50,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 00:10:50,039 INFO L93 Difference]: Finished difference Result 61 states and 85 transitions. [2024-10-24 00:10:50,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 00:10:50,041 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 40 [2024-10-24 00:10:50,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 00:10:50,042 INFO L225 Difference]: With dead ends: 61 [2024-10-24 00:10:50,044 INFO L226 Difference]: Without dead ends: 59 [2024-10-24 00:10:50,044 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-24 00:10:50,046 INFO L432 NwaCegarLoop]: 34 mSDtfsCounter, 4 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 129 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 00:10:50,046 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 129 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 00:10:50,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2024-10-24 00:10:50,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 50. [2024-10-24 00:10:50,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 27 states have (on average 1.1481481481481481) internal successors, (31), 30 states have internal predecessors, (31), 18 states have call successors, (18), 4 states have call predecessors, (18), 4 states have return successors, (17), 15 states have call predecessors, (17), 17 states have call successors, (17) [2024-10-24 00:10:50,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 66 transitions. [2024-10-24 00:10:50,069 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 66 transitions. Word has length 40 [2024-10-24 00:10:50,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 00:10:50,070 INFO L471 AbstractCegarLoop]: Abstraction has 50 states and 66 transitions. [2024-10-24 00:10:50,070 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-10-24 00:10:50,070 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 66 transitions. [2024-10-24 00:10:50,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-10-24 00:10:50,071 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 00:10:50,072 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 00:10:50,091 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-10-24 00:10:50,272 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2024-10-24 00:10:50,273 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 00:10:50,276 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 00:10:50,276 INFO L85 PathProgramCache]: Analyzing trace with hash 345761675, now seen corresponding path program 1 times [2024-10-24 00:10:50,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 00:10:50,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1483600451] [2024-10-24 00:10:50,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 00:10:50,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 00:10:50,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-24 00:10:50,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [826008372] [2024-10-24 00:10:50,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 00:10:50,315 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 00:10:50,315 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 00:10:50,320 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 00:10:50,326 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-24 00:10:50,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:10:50,386 INFO L255 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-10-24 00:10:50,388 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 00:10:50,487 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-10-24 00:10:50,487 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 00:10:50,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 00:10:50,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1483600451] [2024-10-24 00:10:50,489 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-24 00:10:50,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [826008372] [2024-10-24 00:10:50,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [826008372] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 00:10:50,489 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 00:10:50,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-24 00:10:50,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018166467] [2024-10-24 00:10:50,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 00:10:50,490 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 00:10:50,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 00:10:50,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 00:10:50,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-24 00:10:50,493 INFO L87 Difference]: Start difference. First operand 50 states and 66 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-10-24 00:10:50,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 00:10:50,551 INFO L93 Difference]: Finished difference Result 57 states and 72 transitions. [2024-10-24 00:10:50,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 00:10:50,552 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 45 [2024-10-24 00:10:50,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 00:10:50,556 INFO L225 Difference]: With dead ends: 57 [2024-10-24 00:10:50,557 INFO L226 Difference]: Without dead ends: 55 [2024-10-24 00:10:50,558 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-24 00:10:50,558 INFO L432 NwaCegarLoop]: 38 mSDtfsCounter, 5 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 00:10:50,561 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 139 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 00:10:50,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2024-10-24 00:10:50,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 54. [2024-10-24 00:10:50,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 30 states have (on average 1.1333333333333333) internal successors, (34), 33 states have internal predecessors, (34), 18 states have call successors, (18), 5 states have call predecessors, (18), 5 states have return successors, (17), 15 states have call predecessors, (17), 17 states have call successors, (17) [2024-10-24 00:10:50,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 69 transitions. [2024-10-24 00:10:50,581 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 69 transitions. Word has length 45 [2024-10-24 00:10:50,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 00:10:50,581 INFO L471 AbstractCegarLoop]: Abstraction has 54 states and 69 transitions. [2024-10-24 00:10:50,581 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-10-24 00:10:50,582 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 69 transitions. [2024-10-24 00:10:50,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-10-24 00:10:50,584 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 00:10:50,585 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 00:10:50,603 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-10-24 00:10:50,788 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 00:10:50,789 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 00:10:50,790 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 00:10:50,790 INFO L85 PathProgramCache]: Analyzing trace with hash -2047387093, now seen corresponding path program 1 times [2024-10-24 00:10:50,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 00:10:50,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [307100293] [2024-10-24 00:10:50,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 00:10:50,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 00:10:50,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-24 00:10:50,825 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1710108993] [2024-10-24 00:10:50,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 00:10:50,826 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 00:10:50,826 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 00:10:50,828 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 00:10:50,830 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-24 00:10:50,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:10:50,891 INFO L255 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-10-24 00:10:50,893 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 00:10:51,171 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 17 proven. 19 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-10-24 00:10:51,172 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 00:10:51,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 00:10:51,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [307100293] [2024-10-24 00:10:51,682 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-24 00:10:51,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1710108993] [2024-10-24 00:10:51,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1710108993] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 00:10:51,682 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-10-24 00:10:51,682 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2024-10-24 00:10:51,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614339903] [2024-10-24 00:10:51,683 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-10-24 00:10:51,683 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-24 00:10:51,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 00:10:51,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-24 00:10:51,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2024-10-24 00:10:51,685 INFO L87 Difference]: Start difference. First operand 54 states and 69 transitions. Second operand has 12 states, 10 states have (on average 2.1) internal successors, (21), 8 states have internal predecessors, (21), 4 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 5 states have call predecessors, (9), 4 states have call successors, (9) [2024-10-24 00:10:51,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 00:10:51,856 INFO L93 Difference]: Finished difference Result 63 states and 77 transitions. [2024-10-24 00:10:51,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-24 00:10:51,857 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 2.1) internal successors, (21), 8 states have internal predecessors, (21), 4 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 5 states have call predecessors, (9), 4 states have call successors, (9) Word has length 55 [2024-10-24 00:10:51,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 00:10:51,859 INFO L225 Difference]: With dead ends: 63 [2024-10-24 00:10:51,859 INFO L226 Difference]: Without dead ends: 61 [2024-10-24 00:10:51,859 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2024-10-24 00:10:51,860 INFO L432 NwaCegarLoop]: 24 mSDtfsCounter, 27 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 171 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 00:10:51,861 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 137 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 171 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 00:10:51,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2024-10-24 00:10:51,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 58. [2024-10-24 00:10:51,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 33 states have (on average 1.121212121212121) internal successors, (37), 36 states have internal predecessors, (37), 18 states have call successors, (18), 6 states have call predecessors, (18), 6 states have return successors, (17), 15 states have call predecessors, (17), 17 states have call successors, (17) [2024-10-24 00:10:51,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 72 transitions. [2024-10-24 00:10:51,873 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 72 transitions. Word has length 55 [2024-10-24 00:10:51,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 00:10:51,874 INFO L471 AbstractCegarLoop]: Abstraction has 58 states and 72 transitions. [2024-10-24 00:10:51,874 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 2.1) internal successors, (21), 8 states have internal predecessors, (21), 4 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 5 states have call predecessors, (9), 4 states have call successors, (9) [2024-10-24 00:10:51,874 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 72 transitions. [2024-10-24 00:10:51,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-10-24 00:10:51,875 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 00:10:51,875 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 00:10:51,894 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-24 00:10:52,079 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 00:10:52,080 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 00:10:52,080 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 00:10:52,081 INFO L85 PathProgramCache]: Analyzing trace with hash 1705825109, now seen corresponding path program 1 times [2024-10-24 00:10:52,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 00:10:52,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691712289] [2024-10-24 00:10:52,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 00:10:52,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 00:10:52,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-24 00:10:52,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [393052287] [2024-10-24 00:10:52,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 00:10:52,102 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 00:10:52,102 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 00:10:52,104 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 00:10:52,113 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-24 00:10:52,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:10:52,173 INFO L255 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-10-24 00:10:52,176 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 00:10:52,315 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 17 proven. 17 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-10-24 00:10:52,315 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 00:10:52,409 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2024-10-24 00:10:52,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 00:10:52,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1691712289] [2024-10-24 00:10:52,410 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-24 00:10:52,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [393052287] [2024-10-24 00:10:52,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [393052287] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-24 00:10:52,410 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-24 00:10:52,410 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [11] total 12 [2024-10-24 00:10:52,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886688912] [2024-10-24 00:10:52,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 00:10:52,411 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 00:10:52,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 00:10:52,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 00:10:52,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-10-24 00:10:52,412 INFO L87 Difference]: Start difference. First operand 58 states and 72 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-10-24 00:10:52,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 00:10:52,464 INFO L93 Difference]: Finished difference Result 64 states and 77 transitions. [2024-10-24 00:10:52,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 00:10:52,465 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 62 [2024-10-24 00:10:52,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 00:10:52,466 INFO L225 Difference]: With dead ends: 64 [2024-10-24 00:10:52,466 INFO L226 Difference]: Without dead ends: 62 [2024-10-24 00:10:52,466 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 110 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-10-24 00:10:52,467 INFO L432 NwaCegarLoop]: 34 mSDtfsCounter, 4 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 00:10:52,467 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 123 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 00:10:52,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2024-10-24 00:10:52,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 54. [2024-10-24 00:10:52,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 31 states have (on average 1.1290322580645162) internal successors, (35), 32 states have internal predecessors, (35), 16 states have call successors, (16), 6 states have call predecessors, (16), 6 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2024-10-24 00:10:52,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 66 transitions. [2024-10-24 00:10:52,477 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 66 transitions. Word has length 62 [2024-10-24 00:10:52,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 00:10:52,478 INFO L471 AbstractCegarLoop]: Abstraction has 54 states and 66 transitions. [2024-10-24 00:10:52,478 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-10-24 00:10:52,478 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 66 transitions. [2024-10-24 00:10:52,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-10-24 00:10:52,479 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 00:10:52,479 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 00:10:52,497 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-10-24 00:10:52,680 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 00:10:52,680 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 00:10:52,681 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 00:10:52,681 INFO L85 PathProgramCache]: Analyzing trace with hash 392643903, now seen corresponding path program 1 times [2024-10-24 00:10:52,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 00:10:52,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522579663] [2024-10-24 00:10:52,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 00:10:52,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 00:10:52,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:10:52,829 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 00:10:52,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:10:52,831 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-24 00:10:52,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:10:52,840 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-24 00:10:52,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:10:52,882 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-10-24 00:10:52,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:10:52,888 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-10-24 00:10:52,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:10:52,897 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-10-24 00:10:52,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:10:52,905 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-10-24 00:10:52,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:10:52,917 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-10-24 00:10:52,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:10:52,925 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-10-24 00:10:52,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:10:52,933 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-10-24 00:10:52,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:10:52,941 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 14 proven. 11 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2024-10-24 00:10:52,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 00:10:52,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [522579663] [2024-10-24 00:10:52,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [522579663] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 00:10:52,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2135882299] [2024-10-24 00:10:52,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 00:10:52,942 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 00:10:52,942 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 00:10:52,946 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 00:10:52,948 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-24 00:10:53,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:10:53,006 INFO L255 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-10-24 00:10:53,010 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 00:10:53,472 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 8 proven. 26 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-10-24 00:10:53,472 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 00:10:53,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2135882299] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 00:10:53,715 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-24 00:10:53,715 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 13] total 17 [2024-10-24 00:10:53,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37290491] [2024-10-24 00:10:53,715 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-24 00:10:53,716 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-10-24 00:10:53,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 00:10:53,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-10-24 00:10:53,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=434, Unknown=0, NotChecked=0, Total=506 [2024-10-24 00:10:53,717 INFO L87 Difference]: Start difference. First operand 54 states and 66 transitions. Second operand has 17 states, 16 states have (on average 2.0625) internal successors, (33), 14 states have internal predecessors, (33), 10 states have call successors, (21), 3 states have call predecessors, (21), 2 states have return successors, (20), 8 states have call predecessors, (20), 8 states have call successors, (20) [2024-10-24 00:10:54,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 00:10:54,041 INFO L93 Difference]: Finished difference Result 86 states and 107 transitions. [2024-10-24 00:10:54,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-24 00:10:54,042 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 2.0625) internal successors, (33), 14 states have internal predecessors, (33), 10 states have call successors, (21), 3 states have call predecessors, (21), 2 states have return successors, (20), 8 states have call predecessors, (20), 8 states have call successors, (20) Word has length 64 [2024-10-24 00:10:54,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 00:10:54,043 INFO L225 Difference]: With dead ends: 86 [2024-10-24 00:10:54,043 INFO L226 Difference]: Without dead ends: 65 [2024-10-24 00:10:54,043 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=104, Invalid=598, Unknown=0, NotChecked=0, Total=702 [2024-10-24 00:10:54,044 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 47 mSDsluCounter, 286 mSDsCounter, 0 mSdLazyCounter, 260 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 311 SdHoareTripleChecker+Invalid, 303 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-24 00:10:54,045 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 311 Invalid, 303 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 260 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-24 00:10:54,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2024-10-24 00:10:54,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 64. [2024-10-24 00:10:54,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 36 states have (on average 1.1111111111111112) internal successors, (40), 37 states have internal predecessors, (40), 20 states have call successors, (20), 7 states have call predecessors, (20), 7 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2024-10-24 00:10:54,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 79 transitions. [2024-10-24 00:10:54,059 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 79 transitions. Word has length 64 [2024-10-24 00:10:54,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 00:10:54,059 INFO L471 AbstractCegarLoop]: Abstraction has 64 states and 79 transitions. [2024-10-24 00:10:54,060 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 2.0625) internal successors, (33), 14 states have internal predecessors, (33), 10 states have call successors, (21), 3 states have call predecessors, (21), 2 states have return successors, (20), 8 states have call predecessors, (20), 8 states have call successors, (20) [2024-10-24 00:10:54,060 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 79 transitions. [2024-10-24 00:10:54,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2024-10-24 00:10:54,061 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 00:10:54,061 INFO L215 NwaCegarLoop]: trace histogram [9, 8, 8, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 00:10:54,083 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-10-24 00:10:54,265 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 00:10:54,266 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 00:10:54,266 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 00:10:54,266 INFO L85 PathProgramCache]: Analyzing trace with hash 1305329662, now seen corresponding path program 1 times [2024-10-24 00:10:54,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 00:10:54,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2018958561] [2024-10-24 00:10:54,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 00:10:54,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 00:10:54,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-24 00:10:54,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2003762595] [2024-10-24 00:10:54,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 00:10:54,298 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 00:10:54,298 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 00:10:54,300 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 00:10:54,301 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-24 00:10:54,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:10:54,370 INFO L255 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 42 conjuncts are in the unsatisfiable core [2024-10-24 00:10:54,372 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 00:10:55,087 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 22 proven. 26 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2024-10-24 00:10:55,087 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 00:10:56,168 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 19 proven. 20 refuted. 0 times theorem prover too weak. 157 trivial. 0 not checked. [2024-10-24 00:10:56,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 00:10:56,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2018958561] [2024-10-24 00:10:56,169 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-24 00:10:56,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2003762595] [2024-10-24 00:10:56,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2003762595] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 00:10:56,169 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-24 00:10:56,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 25 [2024-10-24 00:10:56,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357355631] [2024-10-24 00:10:56,169 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-24 00:10:56,170 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-10-24 00:10:56,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 00:10:56,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-10-24 00:10:56,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=502, Unknown=0, NotChecked=0, Total=600 [2024-10-24 00:10:56,172 INFO L87 Difference]: Start difference. First operand 64 states and 79 transitions. Second operand has 25 states, 21 states have (on average 1.8095238095238095) internal successors, (38), 19 states have internal predecessors, (38), 13 states have call successors, (28), 3 states have call predecessors, (28), 2 states have return successors, (27), 11 states have call predecessors, (27), 11 states have call successors, (27) [2024-10-24 00:10:58,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 00:10:58,205 INFO L93 Difference]: Finished difference Result 146 states and 214 transitions. [2024-10-24 00:10:58,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-10-24 00:10:58,206 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 21 states have (on average 1.8095238095238095) internal successors, (38), 19 states have internal predecessors, (38), 13 states have call successors, (28), 3 states have call predecessors, (28), 2 states have return successors, (27), 11 states have call predecessors, (27), 11 states have call successors, (27) Word has length 86 [2024-10-24 00:10:58,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 00:10:58,208 INFO L225 Difference]: With dead ends: 146 [2024-10-24 00:10:58,208 INFO L226 Difference]: Without dead ends: 144 [2024-10-24 00:10:58,209 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 364 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=426, Invalid=1644, Unknown=0, NotChecked=0, Total=2070 [2024-10-24 00:10:58,210 INFO L432 NwaCegarLoop]: 49 mSDtfsCounter, 122 mSDsluCounter, 425 mSDsCounter, 0 mSdLazyCounter, 370 mSolverCounterSat, 162 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 474 SdHoareTripleChecker+Invalid, 532 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 162 IncrementalHoareTripleChecker+Valid, 370 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-10-24 00:10:58,210 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [124 Valid, 474 Invalid, 532 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [162 Valid, 370 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-10-24 00:10:58,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2024-10-24 00:10:58,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 96. [2024-10-24 00:10:58,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 50 states have (on average 1.18) internal successors, (59), 52 states have internal predecessors, (59), 37 states have call successors, (37), 8 states have call predecessors, (37), 8 states have return successors, (36), 35 states have call predecessors, (36), 36 states have call successors, (36) [2024-10-24 00:10:58,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 132 transitions. [2024-10-24 00:10:58,249 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 132 transitions. Word has length 86 [2024-10-24 00:10:58,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 00:10:58,251 INFO L471 AbstractCegarLoop]: Abstraction has 96 states and 132 transitions. [2024-10-24 00:10:58,251 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 21 states have (on average 1.8095238095238095) internal successors, (38), 19 states have internal predecessors, (38), 13 states have call successors, (28), 3 states have call predecessors, (28), 2 states have return successors, (27), 11 states have call predecessors, (27), 11 states have call successors, (27) [2024-10-24 00:10:58,251 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 132 transitions. [2024-10-24 00:10:58,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-10-24 00:10:58,252 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 00:10:58,253 INFO L215 NwaCegarLoop]: trace histogram [10, 9, 9, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 00:10:58,275 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-10-24 00:10:58,453 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 00:10:58,454 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 00:10:58,454 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 00:10:58,454 INFO L85 PathProgramCache]: Analyzing trace with hash -2239709, now seen corresponding path program 1 times [2024-10-24 00:10:58,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 00:10:58,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169580180] [2024-10-24 00:10:58,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 00:10:58,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 00:10:58,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-24 00:10:58,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [670970908] [2024-10-24 00:10:58,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 00:10:58,475 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 00:10:58,476 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 00:10:58,477 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 00:10:58,480 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-24 00:10:58,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:10:58,549 INFO L255 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 37 conjuncts are in the unsatisfiable core [2024-10-24 00:10:58,551 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 00:10:59,027 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 24 proven. 26 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2024-10-24 00:10:59,027 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 00:10:59,350 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 18 proven. 8 refuted. 0 times theorem prover too weak. 204 trivial. 0 not checked. [2024-10-24 00:10:59,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 00:10:59,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169580180] [2024-10-24 00:10:59,350 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-24 00:10:59,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [670970908] [2024-10-24 00:10:59,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [670970908] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 00:10:59,350 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-24 00:10:59,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 10] total 22 [2024-10-24 00:10:59,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145055473] [2024-10-24 00:10:59,351 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-24 00:10:59,351 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-10-24 00:10:59,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 00:10:59,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-10-24 00:10:59,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=380, Unknown=0, NotChecked=0, Total=462 [2024-10-24 00:10:59,352 INFO L87 Difference]: Start difference. First operand 96 states and 132 transitions. Second operand has 22 states, 19 states have (on average 1.894736842105263) internal successors, (36), 18 states have internal predecessors, (36), 11 states have call successors, (30), 3 states have call predecessors, (30), 2 states have return successors, (29), 11 states have call predecessors, (29), 11 states have call successors, (29) [2024-10-24 00:11:00,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 00:11:00,641 INFO L93 Difference]: Finished difference Result 181 states and 269 transitions. [2024-10-24 00:11:00,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-10-24 00:11:00,642 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 19 states have (on average 1.894736842105263) internal successors, (36), 18 states have internal predecessors, (36), 11 states have call successors, (30), 3 states have call predecessors, (30), 2 states have return successors, (29), 11 states have call predecessors, (29), 11 states have call successors, (29) Word has length 91 [2024-10-24 00:11:00,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 00:11:00,644 INFO L225 Difference]: With dead ends: 181 [2024-10-24 00:11:00,645 INFO L226 Difference]: Without dead ends: 175 [2024-10-24 00:11:00,646 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 240 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=269, Invalid=991, Unknown=0, NotChecked=0, Total=1260 [2024-10-24 00:11:00,647 INFO L432 NwaCegarLoop]: 35 mSDtfsCounter, 96 mSDsluCounter, 380 mSDsCounter, 0 mSdLazyCounter, 370 mSolverCounterSat, 124 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 415 SdHoareTripleChecker+Invalid, 494 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 124 IncrementalHoareTripleChecker+Valid, 370 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-24 00:11:00,648 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 415 Invalid, 494 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [124 Valid, 370 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-24 00:11:00,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2024-10-24 00:11:00,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 146. [2024-10-24 00:11:00,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 78 states have (on average 1.205128205128205) internal successors, (94), 81 states have internal predecessors, (94), 58 states have call successors, (58), 9 states have call predecessors, (58), 9 states have return successors, (56), 55 states have call predecessors, (56), 56 states have call successors, (56) [2024-10-24 00:11:00,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 208 transitions. [2024-10-24 00:11:00,719 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 208 transitions. Word has length 91 [2024-10-24 00:11:00,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 00:11:00,720 INFO L471 AbstractCegarLoop]: Abstraction has 146 states and 208 transitions. [2024-10-24 00:11:00,721 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 19 states have (on average 1.894736842105263) internal successors, (36), 18 states have internal predecessors, (36), 11 states have call successors, (30), 3 states have call predecessors, (30), 2 states have return successors, (29), 11 states have call predecessors, (29), 11 states have call successors, (29) [2024-10-24 00:11:00,721 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 208 transitions. [2024-10-24 00:11:00,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2024-10-24 00:11:00,722 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 00:11:00,722 INFO L215 NwaCegarLoop]: trace histogram [11, 10, 10, 6, 6, 6, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 00:11:00,739 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-10-24 00:11:00,924 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2024-10-24 00:11:00,925 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 00:11:00,925 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 00:11:00,925 INFO L85 PathProgramCache]: Analyzing trace with hash -1362743633, now seen corresponding path program 1 times [2024-10-24 00:11:00,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 00:11:00,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1865078852] [2024-10-24 00:11:00,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 00:11:00,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 00:11:00,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:11:01,159 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 00:11:01,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:11:01,166 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-24 00:11:01,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:11:01,194 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-24 00:11:01,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:11:01,197 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-10-24 00:11:01,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:11:01,200 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-10-24 00:11:01,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:11:01,205 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-10-24 00:11:01,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:11:01,208 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-10-24 00:11:01,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:11:01,211 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-10-24 00:11:01,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:11:01,219 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-10-24 00:11:01,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:11:01,225 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-10-24 00:11:01,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:11:01,229 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-10-24 00:11:01,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:11:01,235 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-10-24 00:11:01,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:11:01,246 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-10-24 00:11:01,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:11:01,255 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-10-24 00:11:01,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:11:01,263 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2024-10-24 00:11:01,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:11:01,268 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2024-10-24 00:11:01,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:11:01,272 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 39 proven. 12 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2024-10-24 00:11:01,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 00:11:01,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1865078852] [2024-10-24 00:11:01,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1865078852] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 00:11:01,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2067900250] [2024-10-24 00:11:01,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 00:11:01,273 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 00:11:01,273 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 00:11:01,275 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 00:11:01,280 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-10-24 00:11:01,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:11:01,341 INFO L255 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-24 00:11:01,345 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 00:11:01,405 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 99 proven. 12 refuted. 0 times theorem prover too weak. 165 trivial. 0 not checked. [2024-10-24 00:11:01,406 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 00:11:01,540 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 33 proven. 18 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2024-10-24 00:11:01,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2067900250] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 00:11:01,540 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 00:11:01,540 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 12 [2024-10-24 00:11:01,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524112618] [2024-10-24 00:11:01,541 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 00:11:01,541 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-24 00:11:01,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 00:11:01,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-24 00:11:01,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-10-24 00:11:01,542 INFO L87 Difference]: Start difference. First operand 146 states and 208 transitions. Second operand has 12 states, 12 states have (on average 2.75) internal successors, (33), 10 states have internal predecessors, (33), 7 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (25), 7 states have call predecessors, (25), 7 states have call successors, (25) [2024-10-24 00:11:01,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 00:11:01,678 INFO L93 Difference]: Finished difference Result 157 states and 217 transitions. [2024-10-24 00:11:01,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-24 00:11:01,679 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.75) internal successors, (33), 10 states have internal predecessors, (33), 7 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (25), 7 states have call predecessors, (25), 7 states have call successors, (25) Word has length 97 [2024-10-24 00:11:01,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 00:11:01,680 INFO L225 Difference]: With dead ends: 157 [2024-10-24 00:11:01,680 INFO L226 Difference]: Without dead ends: 67 [2024-10-24 00:11:01,683 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 221 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=182, Unknown=0, NotChecked=0, Total=240 [2024-10-24 00:11:01,684 INFO L432 NwaCegarLoop]: 35 mSDtfsCounter, 17 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 214 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 00:11:01,684 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 214 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 00:11:01,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2024-10-24 00:11:01,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2024-10-24 00:11:01,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 37 states have (on average 1.027027027027027) internal successors, (38), 37 states have internal predecessors, (38), 23 states have call successors, (23), 7 states have call predecessors, (23), 6 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2024-10-24 00:11:01,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 83 transitions. [2024-10-24 00:11:01,704 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 83 transitions. Word has length 97 [2024-10-24 00:11:01,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 00:11:01,704 INFO L471 AbstractCegarLoop]: Abstraction has 67 states and 83 transitions. [2024-10-24 00:11:01,705 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.75) internal successors, (33), 10 states have internal predecessors, (33), 7 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (25), 7 states have call predecessors, (25), 7 states have call successors, (25) [2024-10-24 00:11:01,705 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 83 transitions. [2024-10-24 00:11:01,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2024-10-24 00:11:01,706 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 00:11:01,706 INFO L215 NwaCegarLoop]: trace histogram [17, 16, 16, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 00:11:01,724 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-10-24 00:11:01,910 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-10-24 00:11:01,911 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 00:11:01,911 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 00:11:01,911 INFO L85 PathProgramCache]: Analyzing trace with hash -1043945028, now seen corresponding path program 2 times [2024-10-24 00:11:01,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 00:11:01,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890998458] [2024-10-24 00:11:01,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 00:11:01,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 00:11:01,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:11:02,123 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 00:11:02,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:11:02,147 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-24 00:11:02,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:11:02,151 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-24 00:11:02,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:11:02,154 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-10-24 00:11:02,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:11:02,157 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-10-24 00:11:02,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:11:02,159 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-10-24 00:11:02,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:11:02,162 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-10-24 00:11:02,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:11:02,166 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-10-24 00:11:02,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:11:02,169 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-10-24 00:11:02,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:11:02,172 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-10-24 00:11:02,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:11:02,177 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-10-24 00:11:02,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:11:02,182 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-10-24 00:11:02,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:11:02,186 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-10-24 00:11:02,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:11:02,190 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-10-24 00:11:02,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:11:02,196 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-10-24 00:11:02,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:11:02,203 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-10-24 00:11:02,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:11:02,209 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2024-10-24 00:11:02,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:11:02,213 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-10-24 00:11:02,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:11:02,218 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2024-10-24 00:11:02,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:11:02,221 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2024-10-24 00:11:02,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:11:02,226 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2024-10-24 00:11:02,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:11:02,231 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2024-10-24 00:11:02,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:11:02,238 INFO L134 CoverageAnalysis]: Checked inductivity of 610 backedges. 34 proven. 51 refuted. 0 times theorem prover too weak. 525 trivial. 0 not checked. [2024-10-24 00:11:02,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 00:11:02,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1890998458] [2024-10-24 00:11:02,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1890998458] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 00:11:02,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1008868670] [2024-10-24 00:11:02,239 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-24 00:11:02,239 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 00:11:02,240 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 00:11:02,241 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 00:11:02,243 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-10-24 00:11:02,320 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-24 00:11:02,320 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-24 00:11:02,322 INFO L255 TraceCheckSpWp]: Trace formula consists of 293 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-24 00:11:02,324 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 00:11:02,444 INFO L134 CoverageAnalysis]: Checked inductivity of 610 backedges. 32 proven. 53 refuted. 0 times theorem prover too weak. 525 trivial. 0 not checked. [2024-10-24 00:11:02,444 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 00:11:02,721 INFO L134 CoverageAnalysis]: Checked inductivity of 610 backedges. 38 proven. 47 refuted. 0 times theorem prover too weak. 525 trivial. 0 not checked. [2024-10-24 00:11:02,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1008868670] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 00:11:02,722 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 00:11:02,722 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 12, 12] total 21 [2024-10-24 00:11:02,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642403194] [2024-10-24 00:11:02,722 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 00:11:02,723 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-10-24 00:11:02,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 00:11:02,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-10-24 00:11:02,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=355, Unknown=0, NotChecked=0, Total=420 [2024-10-24 00:11:02,725 INFO L87 Difference]: Start difference. First operand 67 states and 83 transitions. Second operand has 21 states, 21 states have (on average 2.380952380952381) internal successors, (50), 21 states have internal predecessors, (50), 16 states have call successors, (51), 2 states have call predecessors, (51), 2 states have return successors, (52), 14 states have call predecessors, (52), 15 states have call successors, (52) [2024-10-24 00:11:02,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 00:11:02,994 INFO L93 Difference]: Finished difference Result 73 states and 94 transitions. [2024-10-24 00:11:02,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-24 00:11:02,995 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.380952380952381) internal successors, (50), 21 states have internal predecessors, (50), 16 states have call successors, (51), 2 states have call predecessors, (51), 2 states have return successors, (52), 14 states have call predecessors, (52), 15 states have call successors, (52) Word has length 130 [2024-10-24 00:11:02,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 00:11:02,995 INFO L225 Difference]: With dead ends: 73 [2024-10-24 00:11:02,995 INFO L226 Difference]: Without dead ends: 0 [2024-10-24 00:11:02,996 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 317 GetRequests, 290 SyntacticMatches, 2 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=136, Invalid=566, Unknown=0, NotChecked=0, Total=702 [2024-10-24 00:11:02,996 INFO L432 NwaCegarLoop]: 40 mSDtfsCounter, 24 mSDsluCounter, 246 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 286 SdHoareTripleChecker+Invalid, 205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-24 00:11:02,997 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 286 Invalid, 205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-24 00:11:02,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-10-24 00:11:02,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-10-24 00:11:02,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 00:11:02,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-10-24 00:11:02,997 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 130 [2024-10-24 00:11:02,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 00:11:02,997 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-10-24 00:11:02,998 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.380952380952381) internal successors, (50), 21 states have internal predecessors, (50), 16 states have call successors, (51), 2 states have call predecessors, (51), 2 states have return successors, (52), 14 states have call predecessors, (52), 15 states have call successors, (52) [2024-10-24 00:11:02,998 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-10-24 00:11:02,998 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-10-24 00:11:03,000 INFO L782 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-10-24 00:11:03,019 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-10-24 00:11:03,201 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-10-24 00:11:03,204 INFO L407 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 00:11:03,206 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-10-24 00:11:03,861 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-10-24 00:11:03,884 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 12:11:03 BoogieIcfgContainer [2024-10-24 00:11:03,884 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-10-24 00:11:03,884 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-10-24 00:11:03,884 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-10-24 00:11:03,885 INFO L274 PluginConnector]: Witness Printer initialized [2024-10-24 00:11:03,885 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 12:10:47" (3/4) ... [2024-10-24 00:11:03,888 INFO L139 WitnessPrinter]: Generating witness for correct program [2024-10-24 00:11:03,891 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not [2024-10-24 00:11:03,891 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2024-10-24 00:11:03,895 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2024-10-24 00:11:03,895 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2024-10-24 00:11:03,895 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-10-24 00:11:03,895 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-10-24 00:11:03,999 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-10-24 00:11:04,000 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-10-24 00:11:04,000 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-10-24 00:11:04,000 INFO L158 Benchmark]: Toolchain (without parser) took 16815.71ms. Allocated memory was 178.3MB in the beginning and 257.9MB in the end (delta: 79.7MB). Free memory was 148.3MB in the beginning and 104.4MB in the end (delta: 44.0MB). Peak memory consumption was 123.6MB. Max. memory is 16.1GB. [2024-10-24 00:11:04,000 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 109.1MB. Free memory is still 79.7MB. There was no memory consumed. Max. memory is 16.1GB. [2024-10-24 00:11:04,001 INFO L158 Benchmark]: CACSL2BoogieTranslator took 306.20ms. Allocated memory is still 178.3MB. Free memory was 148.3MB in the beginning and 135.7MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-10-24 00:11:04,001 INFO L158 Benchmark]: Boogie Procedure Inliner took 41.97ms. Allocated memory is still 178.3MB. Free memory was 135.7MB in the beginning and 133.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-24 00:11:04,001 INFO L158 Benchmark]: Boogie Preprocessor took 46.85ms. Allocated memory is still 178.3MB. Free memory was 133.6MB in the beginning and 131.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-24 00:11:04,001 INFO L158 Benchmark]: RCFGBuilder took 412.37ms. Allocated memory is still 178.3MB. Free memory was 131.5MB in the beginning and 143.2MB in the end (delta: -11.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-10-24 00:11:04,001 INFO L158 Benchmark]: TraceAbstraction took 15882.12ms. Allocated memory was 178.3MB in the beginning and 257.9MB in the end (delta: 79.7MB). Free memory was 143.2MB in the beginning and 109.6MB in the end (delta: 33.6MB). Peak memory consumption was 145.8MB. Max. memory is 16.1GB. [2024-10-24 00:11:04,002 INFO L158 Benchmark]: Witness Printer took 115.47ms. Allocated memory is still 257.9MB. Free memory was 109.6MB in the beginning and 104.4MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-10-24 00:11:04,003 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 109.1MB. Free memory is still 79.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 306.20ms. Allocated memory is still 178.3MB. Free memory was 148.3MB in the beginning and 135.7MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 41.97ms. Allocated memory is still 178.3MB. Free memory was 135.7MB in the beginning and 133.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 46.85ms. Allocated memory is still 178.3MB. Free memory was 133.6MB in the beginning and 131.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 412.37ms. Allocated memory is still 178.3MB. Free memory was 131.5MB in the beginning and 143.2MB in the end (delta: -11.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 15882.12ms. Allocated memory was 178.3MB in the beginning and 257.9MB in the end (delta: 79.7MB). Free memory was 143.2MB in the beginning and 109.6MB in the end (delta: 33.6MB). Peak memory consumption was 145.8MB. Max. memory is 16.1GB. * Witness Printer took 115.47ms. Allocated memory is still 257.9MB. Free memory was 109.6MB in the beginning and 104.4MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 13]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 32 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 15.1s, OverallIterations: 11, TraceHistogramMax: 17, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 4.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 401 SdHoareTripleChecker+Valid, 2.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 379 mSDsluCounter, 2476 SdHoareTripleChecker+Invalid, 2.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2093 mSDsCounter, 422 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1716 IncrementalHoareTripleChecker+Invalid, 2138 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 422 mSolverCounterUnsat, 383 mSDtfsCounter, 1716 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1396 GetRequests, 1199 SyntacticMatches, 6 SemanticMatches, 191 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 833 ImplicationChecksByTransitivity, 4.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=146occurred in iteration=9, InterpolantAutomatonStates: 120, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 11 MinimizatonAttempts, 100 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 6.8s InterpolantComputationTime, 1456 NumberOfCodeBlocks, 1456 NumberOfCodeBlocksAsserted, 22 NumberOfCheckSat, 1523 ConstructedInterpolants, 0 QuantifiedInterpolants, 5255 SizeOfPredicates, 25 NumberOfNonLiveVariables, 1767 ConjunctsInSsa, 227 ConjunctsInUnsatCore, 20 InterpolantComputations, 4 PerfectInterpolantSequences, 3902/4266 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 47]: Loop Invariant Derived loop invariant: ((((((((((((b == 1) && (p == 1)) && (c == 1)) && (yy == 1)) && (a == 1)) && (x == 1)) && (r == 0)) && (q == 0)) && (y == 1)) && (k == 0)) && (s == 1)) || (((((((((((c == 0) && (k == 1)) && (b == 1)) && (p == 1)) && (yy == 1)) && (a == 1)) && (x == 1)) && (r == 0)) && (q == 0)) && (y == 1)) && (s == 1))) - InvariantResult [Line: 41]: Loop Invariant Derived loop invariant: ((((((((((b == 1) && (p == 1)) && (yy == 1)) && (a == 1)) && (x == 1)) && (r == 0)) && (q == 0)) && (y == 1)) && (s == 1)) || (((((((__int128) q + s) == 0) && (b == 0)) && (x == 1)) && (y == 1)) && ((((__int128) r * y) + ((__int128) p * x)) == a))) - ProcedureContractResult [Line: 7]: Procedure Contract for assume_abort_if_not Derived contract for procedure assume_abort_if_not. Ensures: (cond != 0) - ProcedureContractResult [Line: 10]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert. Requires: (1 <= cond) Ensures: (1 <= cond) RESULT: Ultimate proved your program to be correct! [2024-10-24 00:11:04,032 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE