./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/loops-crafted-1/iftelse.c --full-output --preprocessor.use.memory.slicer true --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6ae2ee47 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 ../../../trunk/examples/svcomp/loops-crafted-1/iftelse.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 a98f1431f10d7e60a67a648eec648b7f5eb5616fa0d511e794bbda916609379b --preprocessor.use.memory.slicer true --- Real Ultimate output --- This is Ultimate 0.2.3-dev-6ae2ee4-m [2023-11-22 18:17:40,783 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-22 18:17:40,848 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-22 18:17:40,853 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-22 18:17:40,854 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-22 18:17:40,878 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-22 18:17:40,878 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-22 18:17:40,879 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-22 18:17:40,879 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-22 18:17:40,882 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-22 18:17:40,882 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-22 18:17:40,882 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-22 18:17:40,883 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-22 18:17:40,884 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-22 18:17:40,884 INFO L153 SettingsManager]: * Use SBE=true [2023-11-22 18:17:40,885 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-22 18:17:40,885 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-22 18:17:40,885 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-22 18:17:40,885 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-22 18:17:40,885 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-22 18:17:40,886 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-22 18:17:40,887 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-22 18:17:40,887 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-22 18:17:40,887 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-22 18:17:40,887 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-22 18:17:40,888 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-22 18:17:40,888 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-22 18:17:40,888 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-22 18:17:40,889 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-22 18:17:40,889 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-22 18:17:40,889 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-22 18:17:40,890 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-22 18:17:40,890 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-22 18:17:40,890 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-22 18:17:40,890 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-22 18:17:40,890 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-22 18:17:40,891 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-22 18:17:40,891 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-22 18:17:40,891 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-22 18:17:40,891 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-22 18:17:40,891 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-22 18:17:40,892 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-22 18:17:40,892 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a98f1431f10d7e60a67a648eec648b7f5eb5616fa0d511e794bbda916609379b Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.preprocessor: Use memory slicer -> true [2023-11-22 18:17:41,123 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-22 18:17:41,143 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-22 18:17:41,145 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-22 18:17:41,146 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-22 18:17:41,146 INFO L274 PluginConnector]: CDTParser initialized [2023-11-22 18:17:41,147 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops-crafted-1/iftelse.c [2023-11-22 18:17:42,040 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-22 18:17:42,199 INFO L384 CDTParser]: Found 1 translation units. [2023-11-22 18:17:42,201 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops-crafted-1/iftelse.c [2023-11-22 18:17:42,206 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b91758b48/11833d291a12489aa7d68b64c46d60ec/FLAG71ae820f9 [2023-11-22 18:17:42,223 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b91758b48/11833d291a12489aa7d68b64c46d60ec [2023-11-22 18:17:42,225 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-22 18:17:42,225 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-22 18:17:42,228 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-22 18:17:42,228 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-22 18:17:42,231 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-22 18:17:42,232 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 06:17:42" (1/1) ... [2023-11-22 18:17:42,233 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@31983aed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:17:42, skipping insertion in model container [2023-11-22 18:17:42,233 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 06:17:42" (1/1) ... [2023-11-22 18:17:42,250 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-22 18:17:42,374 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops-crafted-1/iftelse.c[406,419] [2023-11-22 18:17:42,387 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-22 18:17:42,395 INFO L202 MainTranslator]: Completed pre-run [2023-11-22 18:17:42,404 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops-crafted-1/iftelse.c[406,419] [2023-11-22 18:17:42,410 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-22 18:17:42,422 INFO L206 MainTranslator]: Completed translation [2023-11-22 18:17:42,423 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:17:42 WrapperNode [2023-11-22 18:17:42,423 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-22 18:17:42,424 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-22 18:17:42,424 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-22 18:17:42,424 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-22 18:17:42,429 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:17:42" (1/1) ... [2023-11-22 18:17:42,435 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:17:42" (1/1) ... [2023-11-22 18:17:42,447 INFO L138 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 41 [2023-11-22 18:17:42,448 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-22 18:17:42,448 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-22 18:17:42,448 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-22 18:17:42,449 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-22 18:17:42,455 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:17:42" (1/1) ... [2023-11-22 18:17:42,456 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:17:42" (1/1) ... [2023-11-22 18:17:42,457 INFO L184 PluginConnector]: Executing the observer HeapSplitter from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:17:42" (1/1) ... [2023-11-22 18:17:42,467 INFO L189 HeapSplitter]: Split 2 memory accesses to 1 slices as follows [2] [2023-11-22 18:17:42,468 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:17:42" (1/1) ... [2023-11-22 18:17:42,468 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:17:42" (1/1) ... [2023-11-22 18:17:42,471 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:17:42" (1/1) ... [2023-11-22 18:17:42,475 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:17:42" (1/1) ... [2023-11-22 18:17:42,478 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:17:42" (1/1) ... [2023-11-22 18:17:42,479 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:17:42" (1/1) ... [2023-11-22 18:17:42,481 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-22 18:17:42,482 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-22 18:17:42,482 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-22 18:17:42,483 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-22 18:17:42,483 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:17:42" (1/1) ... [2023-11-22 18:17:42,488 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-22 18:17:42,495 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 18:17:42,507 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-22 18:17:42,539 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-22 18:17:42,560 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-22 18:17:42,560 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-22 18:17:42,561 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-22 18:17:42,561 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-22 18:17:42,609 INFO L241 CfgBuilder]: Building ICFG [2023-11-22 18:17:42,611 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-22 18:17:42,740 INFO L282 CfgBuilder]: Performing block encoding [2023-11-22 18:17:42,752 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-22 18:17:42,752 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-22 18:17:42,753 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 06:17:42 BoogieIcfgContainer [2023-11-22 18:17:42,753 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-22 18:17:42,755 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-22 18:17:42,755 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-22 18:17:42,757 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-22 18:17:42,757 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 06:17:42" (1/3) ... [2023-11-22 18:17:42,758 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6313d6bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 06:17:42, skipping insertion in model container [2023-11-22 18:17:42,758 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:17:42" (2/3) ... [2023-11-22 18:17:42,758 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6313d6bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 06:17:42, skipping insertion in model container [2023-11-22 18:17:42,758 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 06:17:42" (3/3) ... [2023-11-22 18:17:42,759 INFO L112 eAbstractionObserver]: Analyzing ICFG iftelse.c [2023-11-22 18:17:42,773 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-22 18:17:42,773 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-22 18:17:42,803 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-22 18:17:42,808 INFO L357 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, mHoare=true, 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;@443b0b03, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-22 18:17:42,808 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-22 18:17:42,811 INFO L276 IsEmpty]: Start isEmpty. Operand has 12 states, 10 states have (on average 1.7) internal successors, (17), 11 states have internal predecessors, (17), 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) [2023-11-22 18:17:42,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-22 18:17:42,815 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 18:17:42,815 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-22 18:17:42,816 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 18:17:42,824 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:17:42,824 INFO L85 PathProgramCache]: Analyzing trace with hash 721581727, now seen corresponding path program 1 times [2023-11-22 18:17:42,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:17:42,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713845359] [2023-11-22 18:17:42,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:17:42,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:17:42,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:17:43,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 18:17:43,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 18:17:43,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713845359] [2023-11-22 18:17:43,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1713845359] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 18:17:43,447 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 18:17:43,447 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-22 18:17:43,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013697437] [2023-11-22 18:17:43,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 18:17:43,452 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-22 18:17:43,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 18:17:43,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-22 18:17:43,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-22 18:17:43,472 INFO L87 Difference]: Start difference. First operand has 12 states, 10 states have (on average 1.7) internal successors, (17), 11 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 6 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 6 states have internal predecessors, (7), 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) [2023-11-22 18:17:43,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 18:17:43,576 INFO L93 Difference]: Finished difference Result 32 states and 48 transitions. [2023-11-22 18:17:43,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-22 18:17:43,578 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 6 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2023-11-22 18:17:43,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 18:17:43,606 INFO L225 Difference]: With dead ends: 32 [2023-11-22 18:17:43,606 INFO L226 Difference]: Without dead ends: 15 [2023-11-22 18:17:43,611 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-22 18:17:43,614 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 9 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-22 18:17:43,614 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 36 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-22 18:17:43,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2023-11-22 18:17:43,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 13. [2023-11-22 18:17:43,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 12 states have internal predecessors, (16), 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) [2023-11-22 18:17:43,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 16 transitions. [2023-11-22 18:17:43,648 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 16 transitions. Word has length 7 [2023-11-22 18:17:43,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 18:17:43,649 INFO L495 AbstractCegarLoop]: Abstraction has 13 states and 16 transitions. [2023-11-22 18:17:43,649 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 6 states have internal predecessors, (7), 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) [2023-11-22 18:17:43,649 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 16 transitions. [2023-11-22 18:17:43,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-22 18:17:43,650 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 18:17:43,650 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2023-11-22 18:17:43,651 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-22 18:17:43,651 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 18:17:43,653 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:17:43,653 INFO L85 PathProgramCache]: Analyzing trace with hash 690706510, now seen corresponding path program 1 times [2023-11-22 18:17:43,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:17:43,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162506754] [2023-11-22 18:17:43,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:17:43,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:17:43,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:17:43,699 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 18:17:43,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 18:17:43,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [162506754] [2023-11-22 18:17:43,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [162506754] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 18:17:43,700 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 18:17:43,700 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-22 18:17:43,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113474822] [2023-11-22 18:17:43,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 18:17:43,702 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-22 18:17:43,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 18:17:43,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-22 18:17:43,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-22 18:17:43,706 INFO L87 Difference]: Start difference. First operand 13 states and 16 transitions. Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 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) [2023-11-22 18:17:43,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 18:17:43,726 INFO L93 Difference]: Finished difference Result 21 states and 26 transitions. [2023-11-22 18:17:43,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 18:17:43,727 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2023-11-22 18:17:43,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 18:17:43,727 INFO L225 Difference]: With dead ends: 21 [2023-11-22 18:17:43,727 INFO L226 Difference]: Without dead ends: 13 [2023-11-22 18:17:43,728 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-22 18:17:43,728 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 0 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-22 18:17:43,729 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 16 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-22 18:17:43,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2023-11-22 18:17:43,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2023-11-22 18:17:43,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 12 states have internal predecessors, (14), 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) [2023-11-22 18:17:43,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2023-11-22 18:17:43,731 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 10 [2023-11-22 18:17:43,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 18:17:43,731 INFO L495 AbstractCegarLoop]: Abstraction has 13 states and 14 transitions. [2023-11-22 18:17:43,731 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 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) [2023-11-22 18:17:43,732 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 14 transitions. [2023-11-22 18:17:43,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-11-22 18:17:43,732 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 18:17:43,732 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1] [2023-11-22 18:17:43,732 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-22 18:17:43,732 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 18:17:43,733 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:17:43,733 INFO L85 PathProgramCache]: Analyzing trace with hash -451900104, now seen corresponding path program 1 times [2023-11-22 18:17:43,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:17:43,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [730238184] [2023-11-22 18:17:43,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:17:43,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:17:43,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:17:43,825 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 18:17:43,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 18:17:43,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [730238184] [2023-11-22 18:17:43,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [730238184] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 18:17:43,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1003719467] [2023-11-22 18:17:43,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:17:43,826 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 18:17:43,826 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 18:17:43,827 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) [2023-11-22 18:17:43,857 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-22 18:17:43,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:17:43,861 INFO L262 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-22 18:17:43,864 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 18:17:43,888 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 18:17:43,888 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 18:17:43,911 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 18:17:43,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1003719467] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-22 18:17:43,911 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-22 18:17:43,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 8 [2023-11-22 18:17:43,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152635638] [2023-11-22 18:17:43,912 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-22 18:17:43,912 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-22 18:17:43,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 18:17:43,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-22 18:17:43,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-11-22 18:17:43,913 INFO L87 Difference]: Start difference. First operand 13 states and 14 transitions. Second operand has 8 states, 8 states have (on average 2.75) internal successors, (22), 8 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 18:17:43,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 18:17:43,951 INFO L93 Difference]: Finished difference Result 36 states and 40 transitions. [2023-11-22 18:17:43,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-22 18:17:43,960 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.75) internal successors, (22), 8 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2023-11-22 18:17:43,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 18:17:43,961 INFO L225 Difference]: With dead ends: 36 [2023-11-22 18:17:43,961 INFO L226 Difference]: Without dead ends: 29 [2023-11-22 18:17:43,961 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-11-22 18:17:43,962 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 14 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-22 18:17:43,962 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 41 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-22 18:17:43,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2023-11-22 18:17:43,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 18. [2023-11-22 18:17:43,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 17 states have (on average 1.1176470588235294) internal successors, (19), 17 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 18:17:43,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2023-11-22 18:17:43,965 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 12 [2023-11-22 18:17:43,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 18:17:43,966 INFO L495 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2023-11-22 18:17:43,966 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.75) internal successors, (22), 8 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 18:17:43,966 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2023-11-22 18:17:43,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-11-22 18:17:43,966 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 18:17:43,966 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 18:17:43,982 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-22 18:17:44,167 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 18:17:44,167 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 18:17:44,168 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:17:44,168 INFO L85 PathProgramCache]: Analyzing trace with hash -451840522, now seen corresponding path program 1 times [2023-11-22 18:17:44,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:17:44,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982679180] [2023-11-22 18:17:44,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:17:44,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:17:44,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:17:44,385 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 18:17:44,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 18:17:44,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [982679180] [2023-11-22 18:17:44,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [982679180] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 18:17:44,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [181549596] [2023-11-22 18:17:44,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:17:44,388 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 18:17:44,388 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 18:17:44,389 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) [2023-11-22 18:17:44,405 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-22 18:17:44,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:17:44,424 INFO L262 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-22 18:17:44,425 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 18:17:44,563 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 18:17:44,564 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 18:17:44,655 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 18:17:44,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [181549596] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-22 18:17:44,657 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-22 18:17:44,657 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 14 [2023-11-22 18:17:44,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759385287] [2023-11-22 18:17:44,658 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-22 18:17:44,658 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-22 18:17:44,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 18:17:44,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-22 18:17:44,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2023-11-22 18:17:44,660 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand has 14 states, 14 states have (on average 2.0714285714285716) internal successors, (29), 14 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 18:17:44,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 18:17:44,826 INFO L93 Difference]: Finished difference Result 39 states and 41 transitions. [2023-11-22 18:17:44,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-22 18:17:44,827 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.0714285714285716) internal successors, (29), 14 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2023-11-22 18:17:44,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 18:17:44,827 INFO L225 Difference]: With dead ends: 39 [2023-11-22 18:17:44,827 INFO L226 Difference]: Without dead ends: 37 [2023-11-22 18:17:44,828 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 16 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=77, Invalid=229, Unknown=0, NotChecked=0, Total=306 [2023-11-22 18:17:44,828 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 17 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-22 18:17:44,828 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 35 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-22 18:17:44,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2023-11-22 18:17:44,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 33. [2023-11-22 18:17:44,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 32 states have (on average 1.09375) internal successors, (35), 32 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 18:17:44,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 35 transitions. [2023-11-22 18:17:44,833 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 35 transitions. Word has length 12 [2023-11-22 18:17:44,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 18:17:44,833 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 35 transitions. [2023-11-22 18:17:44,833 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.0714285714285716) internal successors, (29), 14 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 18:17:44,833 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 35 transitions. [2023-11-22 18:17:44,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-11-22 18:17:44,833 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 18:17:44,833 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1] [2023-11-22 18:17:44,847 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-22 18:17:45,034 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2023-11-22 18:17:45,034 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 18:17:45,034 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:17:45,035 INFO L85 PathProgramCache]: Analyzing trace with hash -67204031, now seen corresponding path program 2 times [2023-11-22 18:17:45,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:17:45,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522584919] [2023-11-22 18:17:45,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:17:45,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:17:45,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:17:45,254 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 18:17:45,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 18:17:45,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [522584919] [2023-11-22 18:17:45,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [522584919] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 18:17:45,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [126952251] [2023-11-22 18:17:45,255 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-22 18:17:45,255 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 18:17:45,256 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 18:17:45,260 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 18:17:45,297 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-22 18:17:45,315 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-22 18:17:45,315 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-22 18:17:45,316 INFO L262 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 19 conjunts are in the unsatisfiable core [2023-11-22 18:17:45,317 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 18:17:45,428 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 18:17:45,429 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 18:17:45,599 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 18:17:45,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [126952251] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-22 18:17:45,600 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-22 18:17:45,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 17 [2023-11-22 18:17:45,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662588292] [2023-11-22 18:17:45,600 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-22 18:17:45,600 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-22 18:17:45,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 18:17:45,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-22 18:17:45,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=205, Unknown=0, NotChecked=0, Total=272 [2023-11-22 18:17:45,601 INFO L87 Difference]: Start difference. First operand 33 states and 35 transitions. Second operand has 17 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 18:17:47,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 18:17:47,613 INFO L93 Difference]: Finished difference Result 54 states and 57 transitions. [2023-11-22 18:17:47,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-11-22 18:17:47,613 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2023-11-22 18:17:47,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 18:17:47,614 INFO L225 Difference]: With dead ends: 54 [2023-11-22 18:17:47,614 INFO L226 Difference]: Without dead ends: 52 [2023-11-22 18:17:47,614 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 24 SyntacticMatches, 2 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=189, Invalid=513, Unknown=0, NotChecked=0, Total=702 [2023-11-22 18:17:47,615 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 40 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-22 18:17:47,615 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 56 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-22 18:17:47,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2023-11-22 18:17:47,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 48. [2023-11-22 18:17:47,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 47 states have (on average 1.0638297872340425) internal successors, (50), 47 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 18:17:47,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 50 transitions. [2023-11-22 18:17:47,624 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 50 transitions. Word has length 17 [2023-11-22 18:17:47,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 18:17:47,624 INFO L495 AbstractCegarLoop]: Abstraction has 48 states and 50 transitions. [2023-11-22 18:17:47,627 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 18:17:47,627 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 50 transitions. [2023-11-22 18:17:47,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-11-22 18:17:47,628 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 18:17:47,628 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 3, 3, 1, 1, 1, 1] [2023-11-22 18:17:47,635 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-22 18:17:47,833 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 18:17:47,833 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 18:17:47,834 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:17:47,834 INFO L85 PathProgramCache]: Analyzing trace with hash -1999550542, now seen corresponding path program 3 times [2023-11-22 18:17:47,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:17:47,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768418511] [2023-11-22 18:17:47,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:17:47,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:17:47,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:17:48,217 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 18:17:48,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 18:17:48,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1768418511] [2023-11-22 18:17:48,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1768418511] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 18:17:48,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1966924152] [2023-11-22 18:17:48,219 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-22 18:17:48,220 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 18:17:48,220 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 18:17:48,221 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) [2023-11-22 18:17:48,248 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-22 18:17:48,868 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-11-22 18:17:48,868 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-22 18:17:48,869 INFO L262 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 33 conjunts are in the unsatisfiable core [2023-11-22 18:17:48,870 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 18:17:50,238 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 33 proven. 19 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-22 18:17:50,238 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 18:17:56,119 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-22 18:17:56,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1966924152] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-22 18:17:56,120 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-22 18:17:56,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 36 [2023-11-22 18:17:56,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376193341] [2023-11-22 18:17:56,120 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-22 18:17:56,120 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2023-11-22 18:17:56,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 18:17:56,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2023-11-22 18:17:56,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=235, Invalid=1025, Unknown=0, NotChecked=0, Total=1260 [2023-11-22 18:17:56,122 INFO L87 Difference]: Start difference. First operand 48 states and 50 transitions. Second operand has 36 states, 36 states have (on average 2.0833333333333335) internal successors, (75), 36 states have internal predecessors, (75), 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) [2023-11-22 18:17:59,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 18:17:59,361 INFO L93 Difference]: Finished difference Result 50 states and 51 transitions. [2023-11-22 18:17:59,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-11-22 18:17:59,362 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 2.0833333333333335) internal successors, (75), 36 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2023-11-22 18:17:59,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 18:17:59,364 INFO L225 Difference]: With dead ends: 50 [2023-11-22 18:17:59,364 INFO L226 Difference]: Without dead ends: 48 [2023-11-22 18:17:59,365 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 40 SyntacticMatches, 2 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 590 ImplicationChecksByTransitivity, 7.8s TimeCoverageRelationStatistics Valid=718, Invalid=2704, Unknown=0, NotChecked=0, Total=3422 [2023-11-22 18:17:59,367 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 138 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 318 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 336 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 318 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-22 18:17:59,367 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [138 Valid, 70 Invalid, 336 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 318 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-22 18:17:59,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2023-11-22 18:17:59,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2023-11-22 18:17:59,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 47 states have (on average 1.0212765957446808) internal successors, (48), 47 states have internal predecessors, (48), 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) [2023-11-22 18:17:59,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 48 transitions. [2023-11-22 18:17:59,386 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 48 transitions. Word has length 32 [2023-11-22 18:17:59,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 18:17:59,386 INFO L495 AbstractCegarLoop]: Abstraction has 48 states and 48 transitions. [2023-11-22 18:17:59,387 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 2.0833333333333335) internal successors, (75), 36 states have internal predecessors, (75), 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) [2023-11-22 18:17:59,387 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 48 transitions. [2023-11-22 18:17:59,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2023-11-22 18:17:59,388 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 18:17:59,389 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 8, 8, 5, 4, 1, 1, 1, 1] [2023-11-22 18:17:59,396 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-22 18:17:59,594 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 18:17:59,594 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 18:17:59,595 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:17:59,595 INFO L85 PathProgramCache]: Analyzing trace with hash 16809511, now seen corresponding path program 4 times [2023-11-22 18:17:59,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:17:59,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099324623] [2023-11-22 18:17:59,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:17:59,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:17:59,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:18:00,156 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 0 proven. 172 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 18:18:00,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 18:18:00,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099324623] [2023-11-22 18:18:00,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2099324623] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 18:18:00,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [421983460] [2023-11-22 18:18:00,156 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-22 18:18:00,157 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 18:18:00,157 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 18:18:00,158 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) [2023-11-22 18:18:00,158 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-22 18:18:00,262 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-22 18:18:00,262 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-22 18:18:00,263 INFO L262 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 41 conjunts are in the unsatisfiable core [2023-11-22 18:18:00,264 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 18:18:00,474 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 0 proven. 172 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 18:18:00,475 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 18:18:01,272 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 0 proven. 172 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 18:18:01,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [421983460] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-22 18:18:01,272 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-22 18:18:01,272 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 36 [2023-11-22 18:18:01,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962974099] [2023-11-22 18:18:01,272 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-22 18:18:01,273 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2023-11-22 18:18:01,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 18:18:01,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2023-11-22 18:18:01,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=960, Unknown=0, NotChecked=0, Total=1260 [2023-11-22 18:18:01,274 INFO L87 Difference]: Start difference. First operand 48 states and 48 transitions. Second operand has 36 states, 36 states have (on average 2.638888888888889) internal successors, (95), 36 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 18:18:26,176 WARN L293 SmtUtils]: Spent 19.75s on a formula simplification. DAG size of input: 94 DAG size of output: 84 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-22 18:18:50,139 WARN L293 SmtUtils]: Spent 20.86s on a formula simplification. DAG size of input: 96 DAG size of output: 91 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-22 18:19:02,088 WARN L293 SmtUtils]: Spent 6.53s on a formula simplification. DAG size of input: 77 DAG size of output: 73 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-22 18:19:14,682 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-22 18:19:16,684 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-22 18:19:19,201 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-22 18:19:41,537 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-22 18:19:42,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 18:19:42,083 INFO L93 Difference]: Finished difference Result 112 states and 117 transitions. [2023-11-22 18:19:42,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2023-11-22 18:19:42,084 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 2.638888888888889) internal successors, (95), 36 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2023-11-22 18:19:42,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 18:19:42,084 INFO L225 Difference]: With dead ends: 112 [2023-11-22 18:19:42,085 INFO L226 Difference]: Without dead ends: 110 [2023-11-22 18:19:42,086 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 75 SyntacticMatches, 1 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 976 ImplicationChecksByTransitivity, 87.1s TimeCoverageRelationStatistics Valid=1257, Invalid=3853, Unknown=2, NotChecked=0, Total=5112 [2023-11-22 18:19:42,086 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 137 mSDsluCounter, 202 mSDsCounter, 0 mSdLazyCounter, 699 mSolverCounterSat, 33 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 214 SdHoareTripleChecker+Invalid, 734 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 699 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.6s IncrementalHoareTripleChecker+Time [2023-11-22 18:19:42,086 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [137 Valid, 214 Invalid, 734 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 699 Invalid, 2 Unknown, 0 Unchecked, 14.6s Time] [2023-11-22 18:19:42,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2023-11-22 18:19:42,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 108. [2023-11-22 18:19:42,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 107 states have (on average 1.0093457943925233) internal successors, (108), 107 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 18:19:42,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 108 transitions. [2023-11-22 18:19:42,098 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 108 transitions. Word has length 47 [2023-11-22 18:19:42,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 18:19:42,098 INFO L495 AbstractCegarLoop]: Abstraction has 108 states and 108 transitions. [2023-11-22 18:19:42,099 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 2.638888888888889) internal successors, (95), 36 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 18:19:42,099 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 108 transitions. [2023-11-22 18:19:42,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2023-11-22 18:19:42,100 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 18:19:42,100 INFO L195 NwaCegarLoop]: trace histogram [21, 21, 20, 20, 11, 10, 1, 1, 1, 1] [2023-11-22 18:19:42,105 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-22 18:19:42,305 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 18:19:42,306 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 18:19:42,306 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:19:42,306 INFO L85 PathProgramCache]: Analyzing trace with hash 1664302707, now seen corresponding path program 5 times [2023-11-22 18:19:42,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:19:42,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960255022] [2023-11-22 18:19:42,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:19:42,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:19:42,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:19:44,017 INFO L134 CoverageAnalysis]: Checked inductivity of 1030 backedges. 0 proven. 1030 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 18:19:44,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 18:19:44,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [960255022] [2023-11-22 18:19:44,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [960255022] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 18:19:44,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [298939806] [2023-11-22 18:19:44,018 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-22 18:19:44,018 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 18:19:44,018 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 18:19:44,019 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) [2023-11-22 18:19:44,019 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-22 18:19:54,697 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 21 check-sat command(s) [2023-11-22 18:19:54,697 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-22 18:19:54,700 INFO L262 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 73 conjunts are in the unsatisfiable core [2023-11-22 18:19:54,703 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 18:19:55,161 INFO L134 CoverageAnalysis]: Checked inductivity of 1030 backedges. 0 proven. 1030 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 18:19:55,161 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 18:19:58,639 INFO L134 CoverageAnalysis]: Checked inductivity of 1030 backedges. 0 proven. 1030 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 18:19:58,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [298939806] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-22 18:19:58,639 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-22 18:19:58,639 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36, 36] total 72 [2023-11-22 18:19:58,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085185546] [2023-11-22 18:19:58,642 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-22 18:19:58,643 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 72 states [2023-11-22 18:19:58,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 18:19:58,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2023-11-22 18:19:58,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1176, Invalid=3936, Unknown=0, NotChecked=0, Total=5112 [2023-11-22 18:19:58,645 INFO L87 Difference]: Start difference. First operand 108 states and 108 transitions. Second operand has 72 states, 72 states have (on average 2.986111111111111) internal successors, (215), 72 states have internal predecessors, (215), 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) [2023-11-22 18:20:11,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 18:20:11,803 INFO L93 Difference]: Finished difference Result 188 states and 196 transitions. [2023-11-22 18:20:11,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2023-11-22 18:20:11,804 INFO L78 Accepts]: Start accepts. Automaton has has 72 states, 72 states have (on average 2.986111111111111) internal successors, (215), 72 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 107 [2023-11-22 18:20:11,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 18:20:11,804 INFO L225 Difference]: With dead ends: 188 [2023-11-22 18:20:11,804 INFO L226 Difference]: Without dead ends: 0 [2023-11-22 18:20:11,807 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 270 GetRequests, 176 SyntacticMatches, 3 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 522 ImplicationChecksByTransitivity, 16.0s TimeCoverageRelationStatistics Valid=2005, Invalid=6551, Unknown=0, NotChecked=0, Total=8556 [2023-11-22 18:20:11,807 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 36 mSDsluCounter, 576 mSDsCounter, 0 mSdLazyCounter, 2548 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 598 SdHoareTripleChecker+Invalid, 2560 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 2548 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-22 18:20:11,807 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 598 Invalid, 2560 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 2548 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-22 18:20:11,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-11-22 18:20:11,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-11-22 18:20:11,808 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) [2023-11-22 18:20:11,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-11-22 18:20:11,808 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 107 [2023-11-22 18:20:11,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 18:20:11,808 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-22 18:20:11,808 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 72 states, 72 states have (on average 2.986111111111111) internal successors, (215), 72 states have internal predecessors, (215), 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) [2023-11-22 18:20:11,808 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-11-22 18:20:11,808 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-11-22 18:20:11,810 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-22 18:20:11,816 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-22 18:20:12,010 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 18:20:12,013 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-11-22 18:20:14,204 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-11-22 18:20:14,204 INFO L899 garLoopResultBuilder]: For program point L11(line 11) no Hoare annotation was computed. [2023-11-22 18:20:14,205 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-11-22 18:20:14,205 INFO L899 garLoopResultBuilder]: For program point main_returnLabel#1(lines 17 32) no Hoare annotation was computed. [2023-11-22 18:20:14,205 INFO L895 garLoopResultBuilder]: At program point L28-1(lines 22 30) the Hoare annotation is: (let ((.cse6 (mod |ULTIMATE.start_main_~n~0#1| 4294967296)) (.cse7 (* 2 |ULTIMATE.start_main_~j~0#1|))) (let ((.cse5 (<= (+ 3 |ULTIMATE.start_main_~i~0#1|) .cse7)) (.cse1 (<= .cse6 20000001)) (.cse2 (<= |ULTIMATE.start_main_~i~0#1| .cse7)) (.cse3 (= ~SIZE~0 20000001)) (.cse0 (+ |ULTIMATE.start_main_~i~0#1| |ULTIMATE.start_main_~j~0#1|)) (.cse4 (<= (+ (mod (+ |ULTIMATE.start_main_~i~0#1| 4294967293) 4294967296) 1) .cse6))) (or (and (<= .cse0 27) (<= 18 |ULTIMATE.start_main_~i~0#1|) .cse1 .cse2 .cse3 .cse4) (and .cse1 .cse5 .cse3 (<= 9 |ULTIMATE.start_main_~i~0#1|) (<= |ULTIMATE.start_main_~j~0#1| 6) .cse4) (and (<= .cse0 24) .cse1 (<= 15 |ULTIMATE.start_main_~i~0#1|) .cse5 .cse3 .cse4) (and (<= 36 |ULTIMATE.start_main_~i~0#1|) .cse1 .cse2 .cse3 .cse4 (<= .cse0 54)) (< |ULTIMATE.start_main_~n~0#1| (+ (* (div |ULTIMATE.start_main_~n~0#1| 4294967296) 4294967296) 1)) (and .cse1 .cse5 (<= 3 |ULTIMATE.start_main_~i~0#1|) (<= .cse0 6) .cse3) (and (= |ULTIMATE.start_main_~i~0#1| 0) .cse1 .cse3 (= |ULTIMATE.start_main_~j~0#1| 0)) (and (<= .cse0 72) .cse1 (<= 48 |ULTIMATE.start_main_~i~0#1|) .cse2 .cse3 .cse4) (and .cse1 (<= .cse0 9) .cse2 .cse3 (<= 6 |ULTIMATE.start_main_~i~0#1|) .cse4) (and .cse1 .cse5 (<= 63 |ULTIMATE.start_main_~i~0#1|) .cse3 (<= .cse0 96) .cse4) (and (<= 27 |ULTIMATE.start_main_~i~0#1|) .cse1 .cse5 (<= .cse0 42) .cse3 .cse4) (and (<= .cse0 69) .cse1 .cse5 (<= 45 |ULTIMATE.start_main_~i~0#1|) .cse3 .cse4) (and (<= .cse0 36) .cse1 .cse2 .cse3 (<= 24 |ULTIMATE.start_main_~i~0#1|) .cse4) (and (<= .cse0 51) .cse1 .cse5 .cse3 (<= 33 |ULTIMATE.start_main_~i~0#1|) .cse4) (and (<= 51 |ULTIMATE.start_main_~i~0#1|) .cse1 .cse5 .cse3 (<= .cse0 78) .cse4) (and (<= 57 |ULTIMATE.start_main_~i~0#1|) .cse1 .cse5 (<= .cse0 87) .cse3 .cse4) (and (<= 21 |ULTIMATE.start_main_~i~0#1|) .cse1 .cse5 .cse3 .cse4 (<= .cse0 33)) (and .cse1 .cse5 (<= .cse0 60) .cse3 (<= 39 |ULTIMATE.start_main_~i~0#1|) .cse4) (and (<= 12 |ULTIMATE.start_main_~i~0#1|) (<= .cse0 18) .cse1 .cse2 .cse3 .cse4) (and (<= .cse0 63) (<= 42 |ULTIMATE.start_main_~i~0#1|) .cse1 .cse2 .cse3 .cse4) (and (<= 60 |ULTIMATE.start_main_~i~0#1|) .cse1 .cse2 .cse3 (<= .cse0 90) .cse4) (and .cse1 .cse2 (<= .cse0 81) .cse3 (<= 54 |ULTIMATE.start_main_~i~0#1|) .cse4) (and (<= 30 |ULTIMATE.start_main_~i~0#1|) .cse1 .cse2 .cse3 (<= .cse0 45) .cse4)))) [2023-11-22 18:20:14,205 INFO L899 garLoopResultBuilder]: For program point L24(lines 24 27) no Hoare annotation was computed. [2023-11-22 18:20:14,205 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 11) no Hoare annotation was computed. [2023-11-22 18:20:14,205 INFO L899 garLoopResultBuilder]: For program point L24-2(lines 22 30) no Hoare annotation was computed. [2023-11-22 18:20:14,205 INFO L899 garLoopResultBuilder]: For program point L20(line 20) no Hoare annotation was computed. [2023-11-22 18:20:14,206 INFO L899 garLoopResultBuilder]: For program point L22-2(lines 22 30) no Hoare annotation was computed. [2023-11-22 18:20:14,206 INFO L899 garLoopResultBuilder]: For program point L10(lines 10 12) no Hoare annotation was computed. [2023-11-22 18:20:14,206 INFO L899 garLoopResultBuilder]: For program point L10-2(lines 9 14) no Hoare annotation was computed. [2023-11-22 18:20:14,208 INFO L445 BasicCegarLoop]: Path program histogram: [5, 1, 1, 1] [2023-11-22 18:20:14,209 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-22 18:20:14,222 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 06:20:14 BoogieIcfgContainer [2023-11-22 18:20:14,222 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-22 18:20:14,222 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-22 18:20:14,222 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-22 18:20:14,223 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-22 18:20:14,223 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 06:17:42" (3/4) ... [2023-11-22 18:20:14,224 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-22 18:20:14,228 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2023-11-22 18:20:14,229 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-11-22 18:20:14,229 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-22 18:20:14,229 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-22 18:20:14,293 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-11-22 18:20:14,293 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2023-11-22 18:20:14,293 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-22 18:20:14,294 INFO L158 Benchmark]: Toolchain (without parser) took 152068.41ms. Allocated memory was 138.4MB in the beginning and 232.8MB in the end (delta: 94.4MB). Free memory was 68.4MB in the beginning and 71.7MB in the end (delta: -3.3MB). Peak memory consumption was 93.5MB. Max. memory is 16.1GB. [2023-11-22 18:20:14,294 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 138.4MB. Free memory is still 106.7MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-22 18:20:14,294 INFO L158 Benchmark]: CACSL2BoogieTranslator took 195.28ms. Allocated memory is still 138.4MB. Free memory was 68.2MB in the beginning and 57.9MB in the end (delta: 10.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-22 18:20:14,295 INFO L158 Benchmark]: Boogie Procedure Inliner took 24.05ms. Allocated memory is still 138.4MB. Free memory was 57.9MB in the beginning and 56.5MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-22 18:20:14,295 INFO L158 Benchmark]: Boogie Preprocessor took 32.92ms. Allocated memory is still 138.4MB. Free memory was 56.5MB in the beginning and 54.9MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-22 18:20:14,295 INFO L158 Benchmark]: RCFGBuilder took 270.81ms. Allocated memory was 138.4MB in the beginning and 192.9MB in the end (delta: 54.5MB). Free memory was 54.7MB in the beginning and 156.3MB in the end (delta: -101.5MB). Peak memory consumption was 11.1MB. Max. memory is 16.1GB. [2023-11-22 18:20:14,296 INFO L158 Benchmark]: TraceAbstraction took 151467.34ms. Allocated memory was 192.9MB in the beginning and 232.8MB in the end (delta: 39.8MB). Free memory was 156.3MB in the beginning and 75.9MB in the end (delta: 80.4MB). Peak memory consumption was 135.1MB. Max. memory is 16.1GB. [2023-11-22 18:20:14,296 INFO L158 Benchmark]: Witness Printer took 71.19ms. Allocated memory is still 232.8MB. Free memory was 75.9MB in the beginning and 71.7MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-22 18:20:14,298 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 138.4MB. Free memory is still 106.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 195.28ms. Allocated memory is still 138.4MB. Free memory was 68.2MB in the beginning and 57.9MB in the end (delta: 10.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 24.05ms. Allocated memory is still 138.4MB. Free memory was 57.9MB in the beginning and 56.5MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 32.92ms. Allocated memory is still 138.4MB. Free memory was 56.5MB in the beginning and 54.9MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 270.81ms. Allocated memory was 138.4MB in the beginning and 192.9MB in the end (delta: 54.5MB). Free memory was 54.7MB in the beginning and 156.3MB in the end (delta: -101.5MB). Peak memory consumption was 11.1MB. Max. memory is 16.1GB. * TraceAbstraction took 151467.34ms. Allocated memory was 192.9MB in the beginning and 232.8MB in the end (delta: 39.8MB). Free memory was 156.3MB in the beginning and 75.9MB in the end (delta: 80.4MB). Peak memory consumption was 135.1MB. Max. memory is 16.1GB. * Witness Printer took 71.19ms. Allocated memory is still 232.8MB. Free memory was 75.9MB in the beginning and 71.7MB in the end (delta: 4.2MB). 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: 11]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 12 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 151.4s, OverallIterations: 8, TraceHistogramMax: 21, PathProgramHistogramMax: 5, EmptinessCheckTime: 0.0s, AutomataDifference: 119.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 2.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 2 mSolverCounterUnknown, 391 SdHoareTripleChecker+Valid, 17.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 391 mSDsluCounter, 1066 SdHoareTripleChecker+Invalid, 16.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 987 mSDsCounter, 74 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3901 IncrementalHoareTripleChecker+Invalid, 3977 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 74 mSolverCounterUnsat, 79 mSDtfsCounter, 3901 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 638 GetRequests, 357 SyntacticMatches, 10 SemanticMatches, 271 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2230 ImplicationChecksByTransitivity, 112.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=108occurred in iteration=7, InterpolantAutomatonStates: 191, 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, 8 MinimizatonAttempts, 23 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 1 LocationsWithAnnotation, 1 PreInvPairs, 39 NumberOfFragments, 727 HoareAnnotationTreeSize, 1 FomulaSimplifications, 1857 FormulaSimplificationTreeSizeReduction, 0.3s HoareSimplificationTime, 1 FomulaSimplificationsInter, 2130 FormulaSimplificationTreeSizeReductionInter, 1.9s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 11.9s SatisfiabilityAnalysisTime, 16.0s InterpolantComputationTime, 471 NumberOfCodeBlocks, 461 NumberOfCodeBlocksAsserted, 39 NumberOfCheckSat, 678 ConstructedInterpolants, 17 QuantifiedInterpolants, 11226 SizeOfPredicates, 30 NumberOfNonLiveVariables, 737 ConjunctsInSsa, 192 ConjunctsInUnsatCore, 20 InterpolantComputations, 2 PerfectInterpolantSequences, 78/3882 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: 22]: Loop Invariant Derived loop invariant: (((((((((((((((((((((((((((((i + j) <= 27) && (18 <= i)) && ((n % 4294967296) <= 20000001)) && (i <= (2 * j))) && (SIZE == 20000001)) && ((((i + 4294967293) % 4294967296) + 1) <= (n % 4294967296))) || (((((((n % 4294967296) <= 20000001) && ((3 + i) <= (2 * j))) && (SIZE == 20000001)) && (9 <= i)) && (j <= 6)) && ((((i + 4294967293) % 4294967296) + 1) <= (n % 4294967296)))) || (((((((i + j) <= 24) && ((n % 4294967296) <= 20000001)) && (15 <= i)) && ((3 + i) <= (2 * j))) && (SIZE == 20000001)) && ((((i + 4294967293) % 4294967296) + 1) <= (n % 4294967296)))) || ((((((36 <= i) && ((n % 4294967296) <= 20000001)) && (i <= (2 * j))) && (SIZE == 20000001)) && ((((i + 4294967293) % 4294967296) + 1) <= (n % 4294967296))) && ((i + j) <= 54))) || (n < (((n / 4294967296) * 4294967296) + 1))) || ((((((n % 4294967296) <= 20000001) && ((3 + i) <= (2 * j))) && (3 <= i)) && ((i + j) <= 6)) && (SIZE == 20000001))) || ((((i == 0) && ((n % 4294967296) <= 20000001)) && (SIZE == 20000001)) && (j == 0))) || (((((((i + j) <= 72) && ((n % 4294967296) <= 20000001)) && (48 <= i)) && (i <= (2 * j))) && (SIZE == 20000001)) && ((((i + 4294967293) % 4294967296) + 1) <= (n % 4294967296)))) || (((((((n % 4294967296) <= 20000001) && ((i + j) <= 9)) && (i <= (2 * j))) && (SIZE == 20000001)) && (6 <= i)) && ((((i + 4294967293) % 4294967296) + 1) <= (n % 4294967296)))) || (((((((n % 4294967296) <= 20000001) && ((3 + i) <= (2 * j))) && (63 <= i)) && (SIZE == 20000001)) && ((i + j) <= 96)) && ((((i + 4294967293) % 4294967296) + 1) <= (n % 4294967296)))) || ((((((27 <= i) && ((n % 4294967296) <= 20000001)) && ((3 + i) <= (2 * j))) && ((i + j) <= 42)) && (SIZE == 20000001)) && ((((i + 4294967293) % 4294967296) + 1) <= (n % 4294967296)))) || (((((((i + j) <= 69) && ((n % 4294967296) <= 20000001)) && ((3 + i) <= (2 * j))) && (45 <= i)) && (SIZE == 20000001)) && ((((i + 4294967293) % 4294967296) + 1) <= (n % 4294967296)))) || (((((((i + j) <= 36) && ((n % 4294967296) <= 20000001)) && (i <= (2 * j))) && (SIZE == 20000001)) && (24 <= i)) && ((((i + 4294967293) % 4294967296) + 1) <= (n % 4294967296)))) || (((((((i + j) <= 51) && ((n % 4294967296) <= 20000001)) && ((3 + i) <= (2 * j))) && (SIZE == 20000001)) && (33 <= i)) && ((((i + 4294967293) % 4294967296) + 1) <= (n % 4294967296)))) || ((((((51 <= i) && ((n % 4294967296) <= 20000001)) && ((3 + i) <= (2 * j))) && (SIZE == 20000001)) && ((i + j) <= 78)) && ((((i + 4294967293) % 4294967296) + 1) <= (n % 4294967296)))) || ((((((57 <= i) && ((n % 4294967296) <= 20000001)) && ((3 + i) <= (2 * j))) && ((i + j) <= 87)) && (SIZE == 20000001)) && ((((i + 4294967293) % 4294967296) + 1) <= (n % 4294967296)))) || ((((((21 <= i) && ((n % 4294967296) <= 20000001)) && ((3 + i) <= (2 * j))) && (SIZE == 20000001)) && ((((i + 4294967293) % 4294967296) + 1) <= (n % 4294967296))) && ((i + j) <= 33))) || (((((((n % 4294967296) <= 20000001) && ((3 + i) <= (2 * j))) && ((i + j) <= 60)) && (SIZE == 20000001)) && (39 <= i)) && ((((i + 4294967293) % 4294967296) + 1) <= (n % 4294967296)))) || ((((((12 <= i) && ((i + j) <= 18)) && ((n % 4294967296) <= 20000001)) && (i <= (2 * j))) && (SIZE == 20000001)) && ((((i + 4294967293) % 4294967296) + 1) <= (n % 4294967296)))) || (((((((i + j) <= 63) && (42 <= i)) && ((n % 4294967296) <= 20000001)) && (i <= (2 * j))) && (SIZE == 20000001)) && ((((i + 4294967293) % 4294967296) + 1) <= (n % 4294967296)))) || ((((((60 <= i) && ((n % 4294967296) <= 20000001)) && (i <= (2 * j))) && (SIZE == 20000001)) && ((i + j) <= 90)) && ((((i + 4294967293) % 4294967296) + 1) <= (n % 4294967296)))) || (((((((n % 4294967296) <= 20000001) && (i <= (2 * j))) && ((i + j) <= 81)) && (SIZE == 20000001)) && (54 <= i)) && ((((i + 4294967293) % 4294967296) + 1) <= (n % 4294967296)))) || ((((((30 <= i) && ((n % 4294967296) <= 20000001)) && (i <= (2 * j))) && (SIZE == 20000001)) && ((i + j) <= 45)) && ((((i + 4294967293) % 4294967296) + 1) <= (n % 4294967296)))) RESULT: Ultimate proved your program to be correct! [2023-11-22 18:20:14,325 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE