./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_unwindbound1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c7c6ca5d Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_unwindbound1.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 0f9cd32f4b321d9995f5b714ac7ab8f417de9e23e3b823c49499e1a07b5844c4 --- Real Ultimate output --- This is Ultimate 0.2.5-?-c7c6ca5-m [2024-11-08 14:24:35,719 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-08 14:24:35,790 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-08 14:24:35,795 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-08 14:24:35,796 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-08 14:24:35,815 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-08 14:24:35,816 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-08 14:24:35,816 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-08 14:24:35,816 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-08 14:24:35,817 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-08 14:24:35,817 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-08 14:24:35,818 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-08 14:24:35,818 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-08 14:24:35,819 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-08 14:24:35,819 INFO L153 SettingsManager]: * Use SBE=true [2024-11-08 14:24:35,819 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-08 14:24:35,820 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-08 14:24:35,820 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-08 14:24:35,820 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-08 14:24:35,821 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-08 14:24:35,821 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-08 14:24:35,822 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-08 14:24:35,822 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-08 14:24:35,822 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-08 14:24:35,822 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-08 14:24:35,823 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-08 14:24:35,823 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-08 14:24:35,823 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-08 14:24:35,824 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-08 14:24:35,824 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-08 14:24:35,824 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-08 14:24:35,824 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-08 14:24:35,825 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 14:24:35,825 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-08 14:24:35,826 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-08 14:24:35,826 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-08 14:24:35,826 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-08 14:24:35,826 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-08 14:24:35,827 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-08 14:24:35,827 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-08 14:24:35,827 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-08 14:24:35,828 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-08 14:24:35,828 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0f9cd32f4b321d9995f5b714ac7ab8f417de9e23e3b823c49499e1a07b5844c4 [2024-11-08 14:24:36,082 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-08 14:24:36,105 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-08 14:24:36,109 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-08 14:24:36,110 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-08 14:24:36,111 INFO L274 PluginConnector]: CDTParser initialized [2024-11-08 14:24:36,112 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_unwindbound1.c [2024-11-08 14:24:37,581 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-08 14:24:37,760 INFO L384 CDTParser]: Found 1 translation units. [2024-11-08 14:24:37,761 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_unwindbound1.c [2024-11-08 14:24:37,771 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4724fd2a2/98cb4034012649999d2d6d4284cd2858/FLAG967e03bd5 [2024-11-08 14:24:37,785 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4724fd2a2/98cb4034012649999d2d6d4284cd2858 [2024-11-08 14:24:37,788 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-08 14:24:37,789 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-08 14:24:37,791 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-08 14:24:37,791 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-08 14:24:37,796 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-08 14:24:37,797 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 02:24:37" (1/1) ... [2024-11-08 14:24:37,798 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68240388 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 02:24:37, skipping insertion in model container [2024-11-08 14:24:37,799 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 02:24:37" (1/1) ... [2024-11-08 14:24:37,822 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-08 14:24:38,002 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_unwindbound1.c[490,503] [2024-11-08 14:24:38,024 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 14:24:38,033 INFO L200 MainTranslator]: Completed pre-run [2024-11-08 14:24:38,045 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_unwindbound1.c[490,503] [2024-11-08 14:24:38,054 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 14:24:38,071 INFO L204 MainTranslator]: Completed translation [2024-11-08 14:24:38,071 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 02:24:38 WrapperNode [2024-11-08 14:24:38,072 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-08 14:24:38,073 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-08 14:24:38,073 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-08 14:24:38,073 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-08 14:24:38,079 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 02:24:38" (1/1) ... [2024-11-08 14:24:38,085 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 02:24:38" (1/1) ... [2024-11-08 14:24:38,106 INFO L138 Inliner]: procedures = 14, calls = 17, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 86 [2024-11-08 14:24:38,106 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-08 14:24:38,107 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-08 14:24:38,107 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-08 14:24:38,107 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-08 14:24:38,115 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 02:24:38" (1/1) ... [2024-11-08 14:24:38,116 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 02:24:38" (1/1) ... [2024-11-08 14:24:38,117 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 02:24:38" (1/1) ... [2024-11-08 14:24:38,127 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-08 14:24:38,128 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 02:24:38" (1/1) ... [2024-11-08 14:24:38,128 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 02:24:38" (1/1) ... [2024-11-08 14:24:38,131 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 02:24:38" (1/1) ... [2024-11-08 14:24:38,134 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 02:24:38" (1/1) ... [2024-11-08 14:24:38,135 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 02:24:38" (1/1) ... [2024-11-08 14:24:38,136 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 02:24:38" (1/1) ... [2024-11-08 14:24:38,139 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-08 14:24:38,140 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-08 14:24:38,141 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-08 14:24:38,141 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-08 14:24:38,142 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 02:24:38" (1/1) ... [2024-11-08 14:24:38,147 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 14:24:38,157 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 14:24:38,168 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-08 14:24:38,171 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-08 14:24:38,214 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-08 14:24:38,214 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-08 14:24:38,215 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-08 14:24:38,215 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-08 14:24:38,215 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-08 14:24:38,215 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-08 14:24:38,215 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-08 14:24:38,215 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-08 14:24:38,270 INFO L238 CfgBuilder]: Building ICFG [2024-11-08 14:24:38,273 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-08 14:24:38,434 INFO L? ?]: Removed 11 outVars from TransFormulas that were not future-live. [2024-11-08 14:24:38,434 INFO L287 CfgBuilder]: Performing block encoding [2024-11-08 14:24:38,451 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-08 14:24:38,451 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-08 14:24:38,452 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 02:24:38 BoogieIcfgContainer [2024-11-08 14:24:38,452 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-08 14:24:38,455 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-08 14:24:38,456 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-08 14:24:38,459 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-08 14:24:38,459 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.11 02:24:37" (1/3) ... [2024-11-08 14:24:38,460 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12e6f39b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 02:24:38, skipping insertion in model container [2024-11-08 14:24:38,461 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 02:24:38" (2/3) ... [2024-11-08 14:24:38,461 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12e6f39b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 02:24:38, skipping insertion in model container [2024-11-08 14:24:38,461 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 02:24:38" (3/3) ... [2024-11-08 14:24:38,463 INFO L112 eAbstractionObserver]: Analyzing ICFG egcd2-ll_unwindbound1.c [2024-11-08 14:24:38,480 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-08 14:24:38,480 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-08 14:24:38,533 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-08 14:24:38,539 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;@1a806650, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-08 14:24:38,539 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-08 14:24:38,544 INFO L276 IsEmpty]: Start isEmpty. Operand has 34 states, 20 states have (on average 1.45) internal successors, (29), 22 states have internal predecessors, (29), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-08 14:24:38,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-08 14:24:38,550 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 14:24:38,551 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 14:24:38,552 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 14:24:38,555 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 14:24:38,556 INFO L85 PathProgramCache]: Analyzing trace with hash 1022199732, now seen corresponding path program 1 times [2024-11-08 14:24:38,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 14:24:38,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [940089270] [2024-11-08 14:24:38,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 14:24:38,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 14:24:38,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:24:38,759 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-08 14:24:38,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:24:38,769 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-08 14:24:38,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:24:38,776 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-08 14:24:38,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:24:38,781 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-11-08 14:24:38,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:24:38,791 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-08 14:24:38,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 14:24:38,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [940089270] [2024-11-08 14:24:38,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [940089270] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 14:24:38,793 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 14:24:38,793 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 14:24:38,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340236139] [2024-11-08 14:24:38,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 14:24:38,798 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-08 14:24:38,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 14:24:38,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-08 14:24:38,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-08 14:24:38,819 INFO L87 Difference]: Start difference. First operand has 34 states, 20 states have (on average 1.45) internal successors, (29), 22 states have internal predecessors, (29), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) 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, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-08 14:24:38,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 14:24:38,836 INFO L93 Difference]: Finished difference Result 65 states and 104 transitions. [2024-11-08 14:24:38,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-08 14:24:38,837 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, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) Word has length 28 [2024-11-08 14:24:38,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 14:24:38,843 INFO L225 Difference]: With dead ends: 65 [2024-11-08 14:24:38,843 INFO L226 Difference]: Without dead ends: 30 [2024-11-08 14:24:38,846 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-08 14:24:38,849 INFO L432 NwaCegarLoop]: 45 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 14:24:38,850 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 14:24:38,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2024-11-08 14:24:38,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2024-11-08 14:24:38,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 17 states have (on average 1.2941176470588236) internal successors, (22), 19 states have internal predecessors, (22), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-08 14:24:38,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 41 transitions. [2024-11-08 14:24:38,881 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 41 transitions. Word has length 28 [2024-11-08 14:24:38,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 14:24:38,881 INFO L471 AbstractCegarLoop]: Abstraction has 30 states and 41 transitions. [2024-11-08 14:24:38,881 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, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-08 14:24:38,882 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 41 transitions. [2024-11-08 14:24:38,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-08 14:24:38,883 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 14:24:38,883 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 14:24:38,883 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-08 14:24:38,884 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 14:24:38,884 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 14:24:38,884 INFO L85 PathProgramCache]: Analyzing trace with hash -455220980, now seen corresponding path program 1 times [2024-11-08 14:24:38,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 14:24:38,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1803202287] [2024-11-08 14:24:38,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 14:24:38,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 14:24:38,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:24:39,010 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-08 14:24:39,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:24:39,021 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-08 14:24:39,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:24:39,042 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-08 14:24:39,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:24:39,057 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-11-08 14:24:39,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:24:39,071 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-08 14:24:39,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 14:24:39,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1803202287] [2024-11-08 14:24:39,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1803202287] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 14:24:39,072 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 14:24:39,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-08 14:24:39,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809921559] [2024-11-08 14:24:39,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 14:24:39,074 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 14:24:39,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 14:24:39,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 14:24:39,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 14:24:39,075 INFO L87 Difference]: Start difference. First operand 30 states and 41 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-08 14:24:39,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 14:24:39,117 INFO L93 Difference]: Finished difference Result 40 states and 52 transitions. [2024-11-08 14:24:39,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 14:24:39,122 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 29 [2024-11-08 14:24:39,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 14:24:39,123 INFO L225 Difference]: With dead ends: 40 [2024-11-08 14:24:39,123 INFO L226 Difference]: Without dead ends: 32 [2024-11-08 14:24:39,123 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 14:24:39,124 INFO L432 NwaCegarLoop]: 39 mSDtfsCounter, 7 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 14:24:39,125 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 100 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 14:24:39,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2024-11-08 14:24:39,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2024-11-08 14:24:39,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 19 states have (on average 1.263157894736842) internal successors, (24), 20 states have internal predecessors, (24), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-08 14:24:39,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 43 transitions. [2024-11-08 14:24:39,138 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 43 transitions. Word has length 29 [2024-11-08 14:24:39,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 14:24:39,140 INFO L471 AbstractCegarLoop]: Abstraction has 32 states and 43 transitions. [2024-11-08 14:24:39,140 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-08 14:24:39,140 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 43 transitions. [2024-11-08 14:24:39,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-11-08 14:24:39,141 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 14:24:39,141 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 14:24:39,142 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-08 14:24:39,142 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 14:24:39,142 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 14:24:39,142 INFO L85 PathProgramCache]: Analyzing trace with hash -1233535180, now seen corresponding path program 1 times [2024-11-08 14:24:39,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 14:24:39,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649432620] [2024-11-08 14:24:39,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 14:24:39,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 14:24:39,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:24:39,326 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-08 14:24:39,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:24:39,330 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-08 14:24:39,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:24:39,357 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-08 14:24:39,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:24:39,365 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-11-08 14:24:39,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:24:39,372 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-08 14:24:39,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 14:24:39,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649432620] [2024-11-08 14:24:39,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [649432620] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 14:24:39,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1547286762] [2024-11-08 14:24:39,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 14:24:39,374 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 14:24:39,374 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 14:24:39,376 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 14:24:39,377 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-08 14:24:39,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:24:39,456 INFO L255 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-08 14:24:39,463 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 14:24:39,650 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-08 14:24:39,650 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 14:24:39,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1547286762] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 14:24:39,651 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 14:24:39,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 10 [2024-11-08 14:24:39,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291284514] [2024-11-08 14:24:39,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 14:24:39,652 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-08 14:24:39,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 14:24:39,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-08 14:24:39,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-11-08 14:24:39,654 INFO L87 Difference]: Start difference. First operand 32 states and 43 transitions. Second operand has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-08 14:24:39,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 14:24:39,770 INFO L93 Difference]: Finished difference Result 49 states and 67 transitions. [2024-11-08 14:24:39,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-08 14:24:39,771 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 30 [2024-11-08 14:24:39,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 14:24:39,772 INFO L225 Difference]: With dead ends: 49 [2024-11-08 14:24:39,772 INFO L226 Difference]: Without dead ends: 47 [2024-11-08 14:24:39,772 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-11-08 14:24:39,773 INFO L432 NwaCegarLoop]: 32 mSDtfsCounter, 9 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 146 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 14:24:39,774 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 146 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 14:24:39,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2024-11-08 14:24:39,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 45. [2024-11-08 14:24:39,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 26 states have (on average 1.3076923076923077) internal successors, (34), 28 states have internal predecessors, (34), 15 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2024-11-08 14:24:39,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 63 transitions. [2024-11-08 14:24:39,785 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 63 transitions. Word has length 30 [2024-11-08 14:24:39,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 14:24:39,786 INFO L471 AbstractCegarLoop]: Abstraction has 45 states and 63 transitions. [2024-11-08 14:24:39,787 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-08 14:24:39,787 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 63 transitions. [2024-11-08 14:24:39,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-11-08 14:24:39,787 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 14:24:39,788 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 14:24:39,806 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-08 14:24:39,988 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 14:24:39,989 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 14:24:39,989 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 14:24:39,989 INFO L85 PathProgramCache]: Analyzing trace with hash -73118621, now seen corresponding path program 1 times [2024-11-08 14:24:39,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 14:24:39,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2079868668] [2024-11-08 14:24:39,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 14:24:39,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 14:24:40,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:24:40,081 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-08 14:24:40,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:24:40,089 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-08 14:24:40,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:24:40,096 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-08 14:24:40,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:24:40,104 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-11-08 14:24:40,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:24:40,112 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-08 14:24:40,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 14:24:40,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2079868668] [2024-11-08 14:24:40,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2079868668] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 14:24:40,113 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 14:24:40,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-08 14:24:40,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038886948] [2024-11-08 14:24:40,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 14:24:40,113 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 14:24:40,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 14:24:40,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 14:24:40,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-08 14:24:40,114 INFO L87 Difference]: Start difference. First operand 45 states and 63 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-08 14:24:40,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 14:24:40,155 INFO L93 Difference]: Finished difference Result 65 states and 86 transitions. [2024-11-08 14:24:40,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 14:24:40,160 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 32 [2024-11-08 14:24:40,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 14:24:40,161 INFO L225 Difference]: With dead ends: 65 [2024-11-08 14:24:40,162 INFO L226 Difference]: Without dead ends: 35 [2024-11-08 14:24:40,162 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-08 14:24:40,163 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 19 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 14:24:40,164 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 58 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 14:24:40,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2024-11-08 14:24:40,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 33. [2024-11-08 14:24:40,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 24 states have internal predecessors, (26), 7 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-08 14:24:40,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 39 transitions. [2024-11-08 14:24:40,171 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 39 transitions. Word has length 32 [2024-11-08 14:24:40,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 14:24:40,172 INFO L471 AbstractCegarLoop]: Abstraction has 33 states and 39 transitions. [2024-11-08 14:24:40,172 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-08 14:24:40,172 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 39 transitions. [2024-11-08 14:24:40,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-11-08 14:24:40,175 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 14:24:40,175 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 14:24:40,175 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-08 14:24:40,176 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 14:24:40,176 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 14:24:40,176 INFO L85 PathProgramCache]: Analyzing trace with hash -910809492, now seen corresponding path program 1 times [2024-11-08 14:24:40,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 14:24:40,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [640585662] [2024-11-08 14:24:40,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 14:24:40,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 14:24:40,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:24:40,262 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-08 14:24:40,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:24:40,266 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-08 14:24:40,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:24:40,296 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-08 14:24:40,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:24:40,304 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-11-08 14:24:40,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:24:40,308 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-11-08 14:24:40,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:24:40,313 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-08 14:24:40,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 14:24:40,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [640585662] [2024-11-08 14:24:40,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [640585662] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 14:24:40,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [713810558] [2024-11-08 14:24:40,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 14:24:40,315 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 14:24:40,315 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 14:24:40,322 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 14:24:40,325 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-08 14:24:40,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:24:40,382 INFO L255 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-08 14:24:40,384 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 14:24:40,517 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-08 14:24:40,517 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 14:24:40,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [713810558] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 14:24:40,518 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 14:24:40,518 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 9 [2024-11-08 14:24:40,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321926038] [2024-11-08 14:24:40,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 14:24:40,518 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 14:24:40,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 14:24:40,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 14:24:40,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-11-08 14:24:40,519 INFO L87 Difference]: Start difference. First operand 33 states and 39 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, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-08 14:24:40,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 14:24:40,580 INFO L93 Difference]: Finished difference Result 43 states and 48 transitions. [2024-11-08 14:24:40,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 14:24:40,581 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, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 35 [2024-11-08 14:24:40,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 14:24:40,581 INFO L225 Difference]: With dead ends: 43 [2024-11-08 14:24:40,582 INFO L226 Difference]: Without dead ends: 31 [2024-11-08 14:24:40,582 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-11-08 14:24:40,583 INFO L432 NwaCegarLoop]: 29 mSDtfsCounter, 6 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 14:24:40,583 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 105 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 14:24:40,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2024-11-08 14:24:40,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 28. [2024-11-08 14:24:40,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 20 states have internal predecessors, (22), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-08 14:24:40,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 33 transitions. [2024-11-08 14:24:40,599 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 33 transitions. Word has length 35 [2024-11-08 14:24:40,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 14:24:40,599 INFO L471 AbstractCegarLoop]: Abstraction has 28 states and 33 transitions. [2024-11-08 14:24:40,600 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, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-08 14:24:40,603 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 33 transitions. [2024-11-08 14:24:40,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-11-08 14:24:40,604 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 14:24:40,604 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 14:24:40,619 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-08 14:24:40,804 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 14:24:40,805 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 14:24:40,805 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 14:24:40,805 INFO L85 PathProgramCache]: Analyzing trace with hash 96561445, now seen corresponding path program 1 times [2024-11-08 14:24:40,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 14:24:40,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1619875987] [2024-11-08 14:24:40,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 14:24:40,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 14:24:40,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-08 14:24:40,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2024109130] [2024-11-08 14:24:40,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 14:24:40,829 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 14:24:40,829 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 14:24:40,831 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 14:24:40,832 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-08 14:24:40,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-08 14:24:40,890 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-08 14:24:40,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-08 14:24:40,942 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-08 14:24:40,942 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-08 14:24:40,943 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-08 14:24:40,961 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-08 14:24:41,148 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 14:24:41,152 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2024-11-08 14:24:41,182 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-08 14:24:41,185 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.11 02:24:41 BoogieIcfgContainer [2024-11-08 14:24:41,186 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-08 14:24:41,186 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-08 14:24:41,186 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-08 14:24:41,186 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-08 14:24:41,187 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 02:24:38" (3/4) ... [2024-11-08 14:24:41,187 INFO L136 WitnessPrinter]: Generating witness for reachability counterexample [2024-11-08 14:24:41,242 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-11-08 14:24:41,242 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-08 14:24:41,242 INFO L158 Benchmark]: Toolchain (without parser) took 3453.11ms. Allocated memory was 159.4MB in the beginning and 203.4MB in the end (delta: 44.0MB). Free memory was 103.3MB in the beginning and 149.8MB in the end (delta: -46.5MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-08 14:24:41,243 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 159.4MB. Free memory is still 120.3MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-08 14:24:41,243 INFO L158 Benchmark]: CACSL2BoogieTranslator took 280.89ms. Allocated memory is still 159.4MB. Free memory was 102.9MB in the beginning and 89.9MB in the end (delta: 12.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-11-08 14:24:41,246 INFO L158 Benchmark]: Boogie Procedure Inliner took 33.70ms. Allocated memory is still 159.4MB. Free memory was 89.9MB in the beginning and 88.1MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-08 14:24:41,246 INFO L158 Benchmark]: Boogie Preprocessor took 32.13ms. Allocated memory is still 159.4MB. Free memory was 88.1MB in the beginning and 86.6MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-08 14:24:41,246 INFO L158 Benchmark]: RCFGBuilder took 311.61ms. Allocated memory is still 159.4MB. Free memory was 86.6MB in the beginning and 73.5MB in the end (delta: 13.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-11-08 14:24:41,247 INFO L158 Benchmark]: TraceAbstraction took 2730.22ms. Allocated memory was 159.4MB in the beginning and 203.4MB in the end (delta: 44.0MB). Free memory was 72.7MB in the beginning and 153.0MB in the end (delta: -80.2MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-08 14:24:41,247 INFO L158 Benchmark]: Witness Printer took 55.85ms. Allocated memory is still 203.4MB. Free memory was 153.0MB in the beginning and 149.8MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-11-08 14:24:41,248 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 159.4MB. Free memory is still 120.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 280.89ms. Allocated memory is still 159.4MB. Free memory was 102.9MB in the beginning and 89.9MB in the end (delta: 12.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 33.70ms. Allocated memory is still 159.4MB. Free memory was 89.9MB in the beginning and 88.1MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 32.13ms. Allocated memory is still 159.4MB. Free memory was 88.1MB in the beginning and 86.6MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 311.61ms. Allocated memory is still 159.4MB. Free memory was 86.6MB in the beginning and 73.5MB in the end (delta: 13.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 2730.22ms. Allocated memory was 159.4MB in the beginning and 203.4MB in the end (delta: 44.0MB). Free memory was 72.7MB in the beginning and 153.0MB in the end (delta: -80.2MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 55.85ms. Allocated memory is still 203.4MB. Free memory was 153.0MB in the beginning and 149.8MB in the end (delta: 3.2MB). 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 - CounterExampleResult [Line: 13]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L18] int counter = 0; VAL [counter=0] [L20] int x, y; [L21] long long a, b, p, q, r, s, c, k, xy, yy; [L22] x = __VERIFIER_nondet_int() [L23] y = __VERIFIER_nondet_int() [L24] CALL assume_abort_if_not(x >= 1) VAL [\old(cond)=1, counter=0] [L8] COND FALSE !(!cond) VAL [\old(cond)=1, counter=0] [L24] RET assume_abort_if_not(x >= 1) VAL [counter=0, x=1, y=1] [L25] CALL assume_abort_if_not(y >= 1) VAL [\old(cond)=1, counter=0] [L8] COND FALSE !(!cond) VAL [\old(cond)=1, counter=0] [L25] RET assume_abort_if_not(y >= 1) VAL [counter=0, x=1, y=1] [L27] a = x [L28] b = y [L29] p = 1 [L30] q = 0 [L31] r = 0 [L32] s = 1 [L33] c = 0 [L34] k = 0 [L35] xy = (long long) x * y [L36] yy = (long long) y * y VAL [a=1, b=1, counter=0, p=1, q=0, r=0, s=1, x=1, xy=1, y=1, yy=1] [L37] CALL assume_abort_if_not(xy < 2147483647) VAL [\old(cond)=1, counter=0] [L8] COND FALSE !(!cond) VAL [\old(cond)=1, counter=0] [L37] RET assume_abort_if_not(xy < 2147483647) VAL [a=1, b=1, counter=0, p=1, q=0, r=0, s=1, x=1, xy=1, y=1, yy=1] [L38] CALL assume_abort_if_not(yy < 2147483647) VAL [\old(cond)=1, counter=0] [L8] COND FALSE !(!cond) VAL [\old(cond)=1, counter=0] [L38] RET assume_abort_if_not(yy < 2147483647) VAL [a=1, b=1, counter=0, p=1, q=0, r=0, s=1, x=1, xy=1, y=1, yy=1] [L40] EXPR counter++ VAL [a=1, b=1, counter=1, p=1, q=0, r=0, s=1, x=1, xy=1, y=1, yy=1] [L40] COND TRUE counter++<1 [L41] COND FALSE !(!(b != 0)) [L43] c = a [L44] k = 0 VAL [a=1, b=1, c=1, counter=1, k=0, p=1, q=0, r=0, s=1, x=1, xy=1, y=1, yy=1] [L46] EXPR counter++ VAL [a=1, b=1, c=1, counter=2, k=0, p=1, q=0, r=0, s=1, x=1, xy=1, y=1, yy=1] [L46] COND FALSE !(counter++<1) [L57] a = b [L58] b = c [L60] long long temp; [L61] temp = p [L62] p = q [L63] q = temp - q * k [L64] temp = r [L65] r = s [L66] s = temp - s * k [L40] EXPR counter++ VAL [a=1, b=1, counter=3, p=0, q=1, r=1, s=0, x=1, xy=1, y=1, yy=1] [L40] COND FALSE !(counter++<1) [L70] CALL __VERIFIER_assert(q*x + s*y == 0) VAL [\old(cond)=0, counter=3] [L11] COND TRUE !(cond) VAL [\old(cond)=0, counter=3] [L13] reach_error() VAL [\old(cond)=0, counter=3] - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 34 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 2.6s, OverallIterations: 6, TraceHistogramMax: 4, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 46 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 41 mSDsluCounter, 454 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 282 mSDsCounter, 2 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 102 IncrementalHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2 mSolverCounterUnsat, 172 mSDtfsCounter, 102 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 131 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=45occurred in iteration=3, InterpolantAutomatonStates: 22, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 5 MinimizatonAttempts, 7 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 289 NumberOfCodeBlocks, 289 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 212 ConstructedInterpolants, 0 QuantifiedInterpolants, 455 SizeOfPredicates, 2 NumberOfNonLiveVariables, 207 ConjunctsInSsa, 20 ConjunctsInUnsatCore, 7 InterpolantComputations, 5 PerfectInterpolantSequences, 160/172 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 RESULT: Ultimate proved your program to be incorrect! [2024-11-08 14:24:41,281 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 Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE