/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/array-examples/data_structures_set_multi_proc_trivial_ground.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-18 16:18:33,263 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-18 16:18:33,330 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-18 16:18:33,334 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-18 16:18:33,334 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-18 16:18:33,354 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-18 16:18:33,355 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-18 16:18:33,355 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-18 16:18:33,356 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-18 16:18:33,358 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-18 16:18:33,358 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-18 16:18:33,359 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-18 16:18:33,359 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-18 16:18:33,360 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-18 16:18:33,360 INFO L153 SettingsManager]: * Use SBE=true [2023-12-18 16:18:33,360 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-18 16:18:33,360 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-18 16:18:33,361 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-18 16:18:33,361 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-18 16:18:33,362 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-18 16:18:33,362 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-18 16:18:33,362 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-18 16:18:33,362 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-18 16:18:33,362 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-18 16:18:33,363 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-18 16:18:33,363 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-18 16:18:33,363 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-18 16:18:33,363 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-18 16:18:33,363 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-18 16:18:33,364 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-18 16:18:33,364 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-18 16:18:33,364 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-18 16:18:33,364 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-18 16:18:33,365 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-18 16:18:33,365 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-18 16:18:33,365 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-18 16:18:33,365 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-18 16:18:33,365 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-18 16:18:33,366 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-18 16:18:33,366 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-18 16:18:33,366 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-18 16:18:33,366 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-18 16:18:33,366 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-18 16:18:33,366 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-18 16:18:33,529 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-18 16:18:33,542 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-18 16:18:33,544 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-18 16:18:33,545 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-18 16:18:33,546 INFO L274 PluginConnector]: CDTParser initialized [2023-12-18 16:18:33,547 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-examples/data_structures_set_multi_proc_trivial_ground.i [2023-12-18 16:18:34,470 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-18 16:18:34,596 INFO L384 CDTParser]: Found 1 translation units. [2023-12-18 16:18:34,597 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-examples/data_structures_set_multi_proc_trivial_ground.i [2023-12-18 16:18:34,601 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5ffe0d5e7/682fb75e5f43423f9a5da18fbaa25a87/FLAG7221b7edd [2023-12-18 16:18:34,611 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5ffe0d5e7/682fb75e5f43423f9a5da18fbaa25a87 [2023-12-18 16:18:34,613 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-18 16:18:34,614 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-18 16:18:34,616 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-18 16:18:34,616 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-18 16:18:34,622 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-18 16:18:34,622 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.12 04:18:34" (1/1) ... [2023-12-18 16:18:34,623 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@457d9c79 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 04:18:34, skipping insertion in model container [2023-12-18 16:18:34,623 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.12 04:18:34" (1/1) ... [2023-12-18 16:18:34,637 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-18 16:18:34,753 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-examples/data_structures_set_multi_proc_trivial_ground.i[838,851] [2023-12-18 16:18:34,773 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-18 16:18:34,778 INFO L202 MainTranslator]: Completed pre-run [2023-12-18 16:18:34,785 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-examples/data_structures_set_multi_proc_trivial_ground.i[838,851] [2023-12-18 16:18:34,799 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-18 16:18:34,809 INFO L206 MainTranslator]: Completed translation [2023-12-18 16:18:34,810 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 04:18:34 WrapperNode [2023-12-18 16:18:34,810 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-18 16:18:34,810 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-18 16:18:34,810 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-18 16:18:34,811 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-18 16:18:34,815 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 04:18:34" (1/1) ... [2023-12-18 16:18:34,820 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 04:18:34" (1/1) ... [2023-12-18 16:18:34,839 INFO L138 Inliner]: procedures = 18, calls = 29, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 159 [2023-12-18 16:18:34,839 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-18 16:18:34,840 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-18 16:18:34,840 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-18 16:18:34,840 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-18 16:18:34,847 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 04:18:34" (1/1) ... [2023-12-18 16:18:34,847 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 04:18:34" (1/1) ... [2023-12-18 16:18:34,849 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 04:18:34" (1/1) ... [2023-12-18 16:18:34,857 INFO L175 MemorySlicer]: Split 14 memory accesses to 3 slices as follows [2, 3, 9]. 64 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 3 writes are split as follows [0, 1, 2]. [2023-12-18 16:18:34,857 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 04:18:34" (1/1) ... [2023-12-18 16:18:34,857 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 04:18:34" (1/1) ... [2023-12-18 16:18:34,862 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 04:18:34" (1/1) ... [2023-12-18 16:18:34,869 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 04:18:34" (1/1) ... [2023-12-18 16:18:34,870 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 04:18:34" (1/1) ... [2023-12-18 16:18:34,870 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 04:18:34" (1/1) ... [2023-12-18 16:18:34,872 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-18 16:18:34,873 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-18 16:18:34,873 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-18 16:18:34,873 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-18 16:18:34,874 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 04:18:34" (1/1) ... [2023-12-18 16:18:34,880 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-18 16:18:34,889 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 16:18:34,897 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-18 16:18:34,922 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-18 16:18:34,928 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-18 16:18:34,928 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-18 16:18:34,928 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-12-18 16:18:34,929 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-12-18 16:18:34,929 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-18 16:18:34,929 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-12-18 16:18:34,930 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-12-18 16:18:34,930 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-12-18 16:18:34,930 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-18 16:18:34,930 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-18 16:18:34,930 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-12-18 16:18:34,931 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-12-18 16:18:34,931 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-12-18 16:18:34,931 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-12-18 16:18:34,932 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-12-18 16:18:34,932 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-18 16:18:34,984 INFO L241 CfgBuilder]: Building ICFG [2023-12-18 16:18:34,985 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-18 16:18:35,124 INFO L282 CfgBuilder]: Performing block encoding [2023-12-18 16:18:35,160 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-18 16:18:35,160 INFO L309 CfgBuilder]: Removed 10 assume(true) statements. [2023-12-18 16:18:35,161 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 04:18:35 BoogieIcfgContainer [2023-12-18 16:18:35,161 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-18 16:18:35,162 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-18 16:18:35,162 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-18 16:18:35,164 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-18 16:18:35,165 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.12 04:18:34" (1/3) ... [2023-12-18 16:18:35,165 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@402a0b5c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.12 04:18:35, skipping insertion in model container [2023-12-18 16:18:35,165 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 04:18:34" (2/3) ... [2023-12-18 16:18:35,165 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@402a0b5c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.12 04:18:35, skipping insertion in model container [2023-12-18 16:18:35,165 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 04:18:35" (3/3) ... [2023-12-18 16:18:35,166 INFO L112 eAbstractionObserver]: Analyzing ICFG data_structures_set_multi_proc_trivial_ground.i [2023-12-18 16:18:35,177 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-18 16:18:35,177 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-18 16:18:35,205 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-18 16:18:35,209 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;@37d3bfac, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-18 16:18:35,209 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-18 16:18:35,212 INFO L276 IsEmpty]: Start isEmpty. Operand has 38 states, 32 states have (on average 1.75) internal successors, (56), 33 states have internal predecessors, (56), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-18 16:18:35,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-12-18 16:18:35,216 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 16:18:35,216 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 16:18:35,217 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 16:18:35,220 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 16:18:35,220 INFO L85 PathProgramCache]: Analyzing trace with hash -768464033, now seen corresponding path program 1 times [2023-12-18 16:18:35,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 16:18:35,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194666426] [2023-12-18 16:18:35,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 16:18:35,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 16:18:35,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 16:18:35,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 16:18:35,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 16:18:35,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [194666426] [2023-12-18 16:18:35,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [194666426] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 16:18:35,368 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 16:18:35,369 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-18 16:18:35,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400873701] [2023-12-18 16:18:35,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 16:18:35,373 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-18 16:18:35,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 16:18:35,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-18 16:18:35,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-18 16:18:35,391 INFO L87 Difference]: Start difference. First operand has 38 states, 32 states have (on average 1.75) internal successors, (56), 33 states have internal predecessors, (56), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 16:18:35,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 16:18:35,478 INFO L93 Difference]: Finished difference Result 103 states and 180 transitions. [2023-12-18 16:18:35,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-18 16:18:35,481 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2023-12-18 16:18:35,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 16:18:35,486 INFO L225 Difference]: With dead ends: 103 [2023-12-18 16:18:35,486 INFO L226 Difference]: Without dead ends: 64 [2023-12-18 16:18:35,488 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-18 16:18:35,494 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 30 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-18 16:18:35,496 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 56 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-18 16:18:35,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2023-12-18 16:18:35,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 37. [2023-12-18 16:18:35,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 32 states have (on average 1.375) internal successors, (44), 32 states have internal predecessors, (44), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-18 16:18:35,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 50 transitions. [2023-12-18 16:18:35,539 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 50 transitions. Word has length 9 [2023-12-18 16:18:35,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 16:18:35,539 INFO L495 AbstractCegarLoop]: Abstraction has 37 states and 50 transitions. [2023-12-18 16:18:35,540 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 16:18:35,540 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 50 transitions. [2023-12-18 16:18:35,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-12-18 16:18:35,540 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 16:18:35,540 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 16:18:35,540 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-18 16:18:35,541 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 16:18:35,541 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 16:18:35,541 INFO L85 PathProgramCache]: Analyzing trace with hash -1876649111, now seen corresponding path program 1 times [2023-12-18 16:18:35,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 16:18:35,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548739553] [2023-12-18 16:18:35,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 16:18:35,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 16:18:35,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 16:18:35,598 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 16:18:35,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 16:18:35,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1548739553] [2023-12-18 16:18:35,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1548739553] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 16:18:35,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1700974542] [2023-12-18 16:18:35,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 16:18:35,599 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 16:18:35,599 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 16:18:35,601 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) [2023-12-18 16:18:35,617 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-18 16:18:35,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 16:18:35,678 INFO L262 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-18 16:18:35,681 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 16:18:35,712 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 16:18:35,712 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 16:18:35,731 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 16:18:35,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1700974542] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 16:18:35,734 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 16:18:35,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-12-18 16:18:35,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680143461] [2023-12-18 16:18:35,735 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 16:18:35,736 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-18 16:18:35,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 16:18:35,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-18 16:18:35,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-12-18 16:18:35,737 INFO L87 Difference]: Start difference. First operand 37 states and 50 transitions. Second operand has 7 states, 7 states have (on average 2.0) internal successors, (14), 6 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 16:18:35,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 16:18:35,928 INFO L93 Difference]: Finished difference Result 182 states and 262 transitions. [2023-12-18 16:18:35,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-18 16:18:35,928 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.0) internal successors, (14), 6 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2023-12-18 16:18:35,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 16:18:35,934 INFO L225 Difference]: With dead ends: 182 [2023-12-18 16:18:35,935 INFO L226 Difference]: Without dead ends: 148 [2023-12-18 16:18:35,935 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-12-18 16:18:35,938 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 172 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 184 SdHoareTripleChecker+Valid, 129 SdHoareTripleChecker+Invalid, 167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-18 16:18:35,938 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [184 Valid, 129 Invalid, 167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-18 16:18:35,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2023-12-18 16:18:35,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 40. [2023-12-18 16:18:35,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 35 states have (on average 1.3428571428571427) internal successors, (47), 35 states have internal predecessors, (47), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-18 16:18:35,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 53 transitions. [2023-12-18 16:18:35,958 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 53 transitions. Word has length 10 [2023-12-18 16:18:35,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 16:18:35,958 INFO L495 AbstractCegarLoop]: Abstraction has 40 states and 53 transitions. [2023-12-18 16:18:35,959 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.0) internal successors, (14), 6 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 16:18:35,959 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 53 transitions. [2023-12-18 16:18:35,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-12-18 16:18:35,959 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 16:18:35,960 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 16:18:35,971 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-18 16:18:36,163 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 16:18:36,164 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 16:18:36,165 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 16:18:36,165 INFO L85 PathProgramCache]: Analyzing trace with hash -212673057, now seen corresponding path program 2 times [2023-12-18 16:18:36,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 16:18:36,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299393953] [2023-12-18 16:18:36,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 16:18:36,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 16:18:36,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 16:18:36,236 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-18 16:18:36,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 16:18:36,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299393953] [2023-12-18 16:18:36,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [299393953] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 16:18:36,237 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 16:18:36,237 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-18 16:18:36,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238424640] [2023-12-18 16:18:36,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 16:18:36,237 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-18 16:18:36,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 16:18:36,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-18 16:18:36,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-18 16:18:36,238 INFO L87 Difference]: Start difference. First operand 40 states and 53 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 16:18:36,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 16:18:36,265 INFO L93 Difference]: Finished difference Result 80 states and 108 transitions. [2023-12-18 16:18:36,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-18 16:18:36,266 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2023-12-18 16:18:36,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 16:18:36,266 INFO L225 Difference]: With dead ends: 80 [2023-12-18 16:18:36,267 INFO L226 Difference]: Without dead ends: 45 [2023-12-18 16:18:36,267 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-18 16:18:36,268 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 34 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-18 16:18:36,268 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 56 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-18 16:18:36,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2023-12-18 16:18:36,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2023-12-18 16:18:36,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 41 states have (on average 1.3170731707317074) internal successors, (54), 41 states have internal predecessors, (54), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-18 16:18:36,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 58 transitions. [2023-12-18 16:18:36,273 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 58 transitions. Word has length 13 [2023-12-18 16:18:36,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 16:18:36,273 INFO L495 AbstractCegarLoop]: Abstraction has 45 states and 58 transitions. [2023-12-18 16:18:36,273 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 16:18:36,273 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 58 transitions. [2023-12-18 16:18:36,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-12-18 16:18:36,274 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 16:18:36,274 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 16:18:36,274 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-18 16:18:36,274 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 16:18:36,275 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 16:18:36,275 INFO L85 PathProgramCache]: Analyzing trace with hash 514848562, now seen corresponding path program 1 times [2023-12-18 16:18:36,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 16:18:36,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [663997517] [2023-12-18 16:18:36,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 16:18:36,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 16:18:36,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 16:18:36,334 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-18 16:18:36,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 16:18:36,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [663997517] [2023-12-18 16:18:36,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [663997517] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 16:18:36,335 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 16:18:36,335 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-18 16:18:36,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757675043] [2023-12-18 16:18:36,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 16:18:36,335 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-18 16:18:36,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 16:18:36,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-18 16:18:36,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-18 16:18:36,336 INFO L87 Difference]: Start difference. First operand 45 states and 58 transitions. Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 16:18:36,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 16:18:36,361 INFO L93 Difference]: Finished difference Result 97 states and 128 transitions. [2023-12-18 16:18:36,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-18 16:18:36,362 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2023-12-18 16:18:36,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 16:18:36,362 INFO L225 Difference]: With dead ends: 97 [2023-12-18 16:18:36,362 INFO L226 Difference]: Without dead ends: 62 [2023-12-18 16:18:36,363 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 [2023-12-18 16:18:36,363 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 16 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-18 16:18:36,364 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 62 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-18 16:18:36,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2023-12-18 16:18:36,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 46. [2023-12-18 16:18:36,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 42 states have (on average 1.3095238095238095) internal successors, (55), 42 states have internal predecessors, (55), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-18 16:18:36,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 59 transitions. [2023-12-18 16:18:36,368 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 59 transitions. Word has length 23 [2023-12-18 16:18:36,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 16:18:36,368 INFO L495 AbstractCegarLoop]: Abstraction has 46 states and 59 transitions. [2023-12-18 16:18:36,368 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 16:18:36,368 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 59 transitions. [2023-12-18 16:18:36,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-12-18 16:18:36,369 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 16:18:36,369 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 16:18:36,369 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-18 16:18:36,369 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 16:18:36,369 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 16:18:36,369 INFO L85 PathProgramCache]: Analyzing trace with hash -384617796, now seen corresponding path program 1 times [2023-12-18 16:18:36,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 16:18:36,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139062402] [2023-12-18 16:18:36,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 16:18:36,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 16:18:36,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 16:18:36,415 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-18 16:18:36,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 16:18:36,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1139062402] [2023-12-18 16:18:36,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1139062402] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 16:18:36,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1821593415] [2023-12-18 16:18:36,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 16:18:36,416 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 16:18:36,417 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 16:18:36,421 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) [2023-12-18 16:18:36,433 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-18 16:18:36,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 16:18:36,487 INFO L262 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-18 16:18:36,489 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 16:18:36,530 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-18 16:18:36,531 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 16:18:36,591 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-18 16:18:36,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1821593415] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 16:18:36,592 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 16:18:36,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6, 6] total 14 [2023-12-18 16:18:36,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790191504] [2023-12-18 16:18:36,592 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 16:18:36,593 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-18 16:18:36,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 16:18:36,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-18 16:18:36,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2023-12-18 16:18:36,594 INFO L87 Difference]: Start difference. First operand 46 states and 59 transitions. Second operand has 14 states, 14 states have (on average 2.642857142857143) internal successors, (37), 14 states have internal predecessors, (37), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 16:18:37,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 16:18:37,078 INFO L93 Difference]: Finished difference Result 511 states and 749 transitions. [2023-12-18 16:18:37,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2023-12-18 16:18:37,079 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.642857142857143) internal successors, (37), 14 states have internal predecessors, (37), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2023-12-18 16:18:37,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 16:18:37,081 INFO L225 Difference]: With dead ends: 511 [2023-12-18 16:18:37,081 INFO L226 Difference]: Without dead ends: 471 [2023-12-18 16:18:37,082 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 212 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=396, Invalid=726, Unknown=0, NotChecked=0, Total=1122 [2023-12-18 16:18:37,083 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 1099 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 259 mSolverCounterSat, 208 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1121 SdHoareTripleChecker+Valid, 189 SdHoareTripleChecker+Invalid, 467 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 208 IncrementalHoareTripleChecker+Valid, 259 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-18 16:18:37,083 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1121 Valid, 189 Invalid, 467 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [208 Valid, 259 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-18 16:18:37,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 471 states. [2023-12-18 16:18:37,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 471 to 67. [2023-12-18 16:18:37,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 62 states have (on average 1.2903225806451613) internal successors, (80), 62 states have internal predecessors, (80), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-18 16:18:37,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 86 transitions. [2023-12-18 16:18:37,108 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 86 transitions. Word has length 24 [2023-12-18 16:18:37,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 16:18:37,109 INFO L495 AbstractCegarLoop]: Abstraction has 67 states and 86 transitions. [2023-12-18 16:18:37,112 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.642857142857143) internal successors, (37), 14 states have internal predecessors, (37), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 16:18:37,112 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 86 transitions. [2023-12-18 16:18:37,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-12-18 16:18:37,116 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 16:18:37,116 INFO L195 NwaCegarLoop]: trace histogram [10, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 16:18:37,126 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-18 16:18:37,325 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 16:18:37,325 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 16:18:37,325 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 16:18:37,325 INFO L85 PathProgramCache]: Analyzing trace with hash 134478898, now seen corresponding path program 2 times [2023-12-18 16:18:37,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 16:18:37,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1922277698] [2023-12-18 16:18:37,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 16:18:37,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 16:18:37,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 16:18:37,410 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2023-12-18 16:18:37,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 16:18:37,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1922277698] [2023-12-18 16:18:37,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1922277698] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 16:18:37,411 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 16:18:37,411 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-18 16:18:37,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831265240] [2023-12-18 16:18:37,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 16:18:37,412 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-18 16:18:37,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 16:18:37,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-18 16:18:37,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-18 16:18:37,412 INFO L87 Difference]: Start difference. First operand 67 states and 86 transitions. Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 16:18:37,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 16:18:37,436 INFO L93 Difference]: Finished difference Result 124 states and 163 transitions. [2023-12-18 16:18:37,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-18 16:18:37,436 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2023-12-18 16:18:37,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 16:18:37,436 INFO L225 Difference]: With dead ends: 124 [2023-12-18 16:18:37,437 INFO L226 Difference]: Without dead ends: 91 [2023-12-18 16:18:37,438 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-18 16:18:37,442 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 17 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 127 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-18 16:18:37,443 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 127 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-18 16:18:37,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2023-12-18 16:18:37,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 70. [2023-12-18 16:18:37,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 65 states have (on average 1.2769230769230768) internal successors, (83), 65 states have internal predecessors, (83), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-18 16:18:37,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 89 transitions. [2023-12-18 16:18:37,455 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 89 transitions. Word has length 31 [2023-12-18 16:18:37,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 16:18:37,455 INFO L495 AbstractCegarLoop]: Abstraction has 70 states and 89 transitions. [2023-12-18 16:18:37,455 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 16:18:37,455 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 89 transitions. [2023-12-18 16:18:37,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-12-18 16:18:37,456 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 16:18:37,456 INFO L195 NwaCegarLoop]: trace histogram [10, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 16:18:37,456 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-18 16:18:37,456 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 16:18:37,456 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 16:18:37,456 INFO L85 PathProgramCache]: Analyzing trace with hash -1887315780, now seen corresponding path program 1 times [2023-12-18 16:18:37,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 16:18:37,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1492120714] [2023-12-18 16:18:37,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 16:18:37,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 16:18:37,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 16:18:37,571 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2023-12-18 16:18:37,571 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 16:18:37,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1492120714] [2023-12-18 16:18:37,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1492120714] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 16:18:37,571 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 16:18:37,571 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-18 16:18:37,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404790766] [2023-12-18 16:18:37,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 16:18:37,573 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-18 16:18:37,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 16:18:37,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-18 16:18:37,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-18 16:18:37,574 INFO L87 Difference]: Start difference. First operand 70 states and 89 transitions. Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 3 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 16:18:37,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 16:18:37,589 INFO L93 Difference]: Finished difference Result 79 states and 100 transitions. [2023-12-18 16:18:37,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-18 16:18:37,589 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 3 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2023-12-18 16:18:37,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 16:18:37,589 INFO L225 Difference]: With dead ends: 79 [2023-12-18 16:18:37,589 INFO L226 Difference]: Without dead ends: 0 [2023-12-18 16:18:37,590 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-18 16:18:37,590 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 10 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-18 16:18:37,591 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 18 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-18 16:18:37,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-12-18 16:18:37,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-12-18 16:18:37,592 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) [2023-12-18 16:18:37,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-12-18 16:18:37,592 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 31 [2023-12-18 16:18:37,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 16:18:37,592 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-12-18 16:18:37,592 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 3 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 16:18:37,592 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-12-18 16:18:37,592 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-12-18 16:18:37,594 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-18 16:18:37,594 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-18 16:18:37,596 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-12-18 16:18:37,668 INFO L899 garLoopResultBuilder]: For program point L52(lines 52 54) no Hoare annotation was computed. [2023-12-18 16:18:37,668 INFO L899 garLoopResultBuilder]: For program point L52-2(lines 52 54) no Hoare annotation was computed. [2023-12-18 16:18:37,668 INFO L899 garLoopResultBuilder]: For program point elem_exists_returnLabel#1(lines 20 26) no Hoare annotation was computed. [2023-12-18 16:18:37,668 INFO L899 garLoopResultBuilder]: For program point L61-2(lines 61 65) no Hoare annotation was computed. [2023-12-18 16:18:37,669 INFO L895 garLoopResultBuilder]: At program point L61-3(lines 61 65) the Hoare annotation is: (and (= |ULTIMATE.start_main_~n~0#1| 0) (= |ULTIMATE.start_main_~x~0#1| 0)) [2023-12-18 16:18:37,669 INFO L899 garLoopResultBuilder]: For program point L61-4(lines 61 65) no Hoare annotation was computed. [2023-12-18 16:18:37,669 INFO L895 garLoopResultBuilder]: At program point L62-3(lines 62 64) the Hoare annotation is: false [2023-12-18 16:18:37,669 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-12-18 16:18:37,669 INFO L895 garLoopResultBuilder]: At program point L63(line 63) the Hoare annotation is: false [2023-12-18 16:18:37,669 INFO L899 garLoopResultBuilder]: For program point L63-1(line 63) no Hoare annotation was computed. [2023-12-18 16:18:37,669 INFO L899 garLoopResultBuilder]: For program point L55-2(lines 55 59) no Hoare annotation was computed. [2023-12-18 16:18:37,669 INFO L895 garLoopResultBuilder]: At program point L55-3(lines 55 59) the Hoare annotation is: (and (= |ULTIMATE.start_main_~n~0#1| 0) (= |ULTIMATE.start_main_~x~0#1| 0)) [2023-12-18 16:18:37,669 INFO L895 garLoopResultBuilder]: At program point L22-3(lines 22 24) the Hoare annotation is: (and (= |ULTIMATE.start_elem_exists_~size#1| 0) (= |ULTIMATE.start_elem_exists_~i~0#1| 0) (= |ULTIMATE.start_main_~n~0#1| 0) (= |ULTIMATE.start_main_~x~0#1| 0)) [2023-12-18 16:18:37,669 INFO L899 garLoopResultBuilder]: For program point L22-4(lines 22 24) no Hoare annotation was computed. [2023-12-18 16:18:37,669 INFO L895 garLoopResultBuilder]: At program point L47-3(lines 47 50) the Hoare annotation is: (and (= |ULTIMATE.start_main_~n~0#1| 0) (= |ULTIMATE.start_main_~x~0#1| 0)) [2023-12-18 16:18:37,669 INFO L899 garLoopResultBuilder]: For program point L47-4(lines 47 50) no Hoare annotation was computed. [2023-12-18 16:18:37,670 INFO L899 garLoopResultBuilder]: For program point L39-2(lines 39 43) no Hoare annotation was computed. [2023-12-18 16:18:37,670 INFO L895 garLoopResultBuilder]: At program point L39-3(lines 39 43) the Hoare annotation is: (and (= |ULTIMATE.start_main_~n~0#1| 0) (= |ULTIMATE.start_main_~x~0#1| 0)) [2023-12-18 16:18:37,670 INFO L899 garLoopResultBuilder]: For program point L39-4(lines 39 43) no Hoare annotation was computed. [2023-12-18 16:18:37,671 INFO L899 garLoopResultBuilder]: For program point L23(line 23) no Hoare annotation was computed. [2023-12-18 16:18:37,671 INFO L895 garLoopResultBuilder]: At program point L56-3(lines 56 58) the Hoare annotation is: false [2023-12-18 16:18:37,671 INFO L895 garLoopResultBuilder]: At program point L40-3(lines 40 42) the Hoare annotation is: false [2023-12-18 16:18:37,671 INFO L895 garLoopResultBuilder]: At program point L57(line 57) the Hoare annotation is: false [2023-12-18 16:18:37,671 INFO L899 garLoopResultBuilder]: For program point L57-1(line 57) no Hoare annotation was computed. [2023-12-18 16:18:37,671 INFO L895 garLoopResultBuilder]: At program point L41(line 41) the Hoare annotation is: false [2023-12-18 16:18:37,671 INFO L899 garLoopResultBuilder]: For program point L41-1(line 41) no Hoare annotation was computed. [2023-12-18 16:18:37,671 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-12-18 16:18:37,671 INFO L895 garLoopResultBuilder]: At program point L33-3(lines 33 36) the Hoare annotation is: (= |ULTIMATE.start_main_~n~0#1| 0) [2023-12-18 16:18:37,671 INFO L899 garLoopResultBuilder]: For program point L33-4(lines 33 36) no Hoare annotation was computed. [2023-12-18 16:18:37,671 INFO L899 garLoopResultBuilder]: For program point L51-2(lines 51 60) no Hoare annotation was computed. [2023-12-18 16:18:37,671 INFO L895 garLoopResultBuilder]: At program point L51-3(lines 51 60) the Hoare annotation is: (and (= |ULTIMATE.start_main_~n~0#1| 0) (= |ULTIMATE.start_main_~x~0#1| 0)) [2023-12-18 16:18:37,672 INFO L899 garLoopResultBuilder]: For program point L51-4(lines 51 60) no Hoare annotation was computed. [2023-12-18 16:18:37,673 INFO L899 garLoopResultBuilder]: For program point L13(line 13) no Hoare annotation was computed. [2023-12-18 16:18:37,673 INFO L899 garLoopResultBuilder]: For program point L13-1(line 13) no Hoare annotation was computed. [2023-12-18 16:18:37,675 INFO L899 garLoopResultBuilder]: For program point L13-3(line 13) no Hoare annotation was computed. [2023-12-18 16:18:37,675 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(line 13) no Hoare annotation was computed. [2023-12-18 16:18:37,675 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(line 13) the Hoare annotation is: true [2023-12-18 16:18:37,675 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2023-12-18 16:18:37,677 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1] [2023-12-18 16:18:37,679 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-18 16:18:37,687 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.12 04:18:37 BoogieIcfgContainer [2023-12-18 16:18:37,687 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-18 16:18:37,688 INFO L158 Benchmark]: Toolchain (without parser) took 3074.13ms. Allocated memory is still 297.8MB. Free memory was 247.1MB in the beginning and 176.6MB in the end (delta: 70.5MB). Peak memory consumption was 71.4MB. Max. memory is 8.0GB. [2023-12-18 16:18:37,688 INFO L158 Benchmark]: CDTParser took 0.39ms. Allocated memory is still 182.5MB. Free memory is still 129.4MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-18 16:18:37,688 INFO L158 Benchmark]: CACSL2BoogieTranslator took 194.26ms. Allocated memory is still 297.8MB. Free memory was 247.1MB in the beginning and 235.2MB in the end (delta: 11.9MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2023-12-18 16:18:37,688 INFO L158 Benchmark]: Boogie Procedure Inliner took 28.80ms. Allocated memory is still 297.8MB. Free memory was 235.2MB in the beginning and 233.5MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-18 16:18:37,688 INFO L158 Benchmark]: Boogie Preprocessor took 32.64ms. Allocated memory is still 297.8MB. Free memory was 233.5MB in the beginning and 231.0MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-18 16:18:37,689 INFO L158 Benchmark]: RCFGBuilder took 288.13ms. Allocated memory is still 297.8MB. Free memory was 231.0MB in the beginning and 213.5MB in the end (delta: 17.4MB). Peak memory consumption was 17.8MB. Max. memory is 8.0GB. [2023-12-18 16:18:37,689 INFO L158 Benchmark]: TraceAbstraction took 2525.16ms. Allocated memory is still 297.8MB. Free memory was 212.9MB in the beginning and 176.6MB in the end (delta: 36.3MB). Peak memory consumption was 37.8MB. Max. memory is 8.0GB. [2023-12-18 16:18:37,690 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.39ms. Allocated memory is still 182.5MB. Free memory is still 129.4MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 194.26ms. Allocated memory is still 297.8MB. Free memory was 247.1MB in the beginning and 235.2MB in the end (delta: 11.9MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 28.80ms. Allocated memory is still 297.8MB. Free memory was 235.2MB in the beginning and 233.5MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 32.64ms. Allocated memory is still 297.8MB. Free memory was 233.5MB in the beginning and 231.0MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 288.13ms. Allocated memory is still 297.8MB. Free memory was 231.0MB in the beginning and 213.5MB in the end (delta: 17.4MB). Peak memory consumption was 17.8MB. Max. memory is 8.0GB. * TraceAbstraction took 2525.16ms. Allocated memory is still 297.8MB. Free memory was 212.9MB in the beginning and 176.6MB in the end (delta: 36.3MB). Peak memory consumption was 37.8MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 13]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 38 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 2.5s, OverallIterations: 7, TraceHistogramMax: 10, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1418 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1378 mSDsluCounter, 637 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 422 mSDsCounter, 258 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 517 IncrementalHoareTripleChecker+Invalid, 775 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 258 mSolverCounterUnsat, 215 mSDtfsCounter, 517 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 109 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 216 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=70occurred in iteration=6, InterpolantAutomatonStates: 58, 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, 7 MinimizatonAttempts, 576 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 14 LocationsWithAnnotation, 32 PreInvPairs, 52 NumberOfFragments, 58 HoareAnnotationTreeSize, 32 FormulaSimplifications, 417 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 14 FormulaSimplificationsInter, 49 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 175 NumberOfCodeBlocks, 175 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 198 ConstructedInterpolants, 0 QuantifiedInterpolants, 304 SizeOfPredicates, 0 NumberOfNonLiveVariables, 219 ConjunctsInSsa, 9 ConjunctsInUnsatCore, 11 InterpolantComputations, 5 PerfectInterpolantSequences, 148/172 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 39]: Loop Invariant Derived loop invariant: ((n == 0) && (x == 0)) - InvariantResult [Line: 55]: Loop Invariant Derived loop invariant: ((n == 0) && (x == 0)) - InvariantResult [Line: 51]: Loop Invariant Derived loop invariant: ((n == 0) && (x == 0)) - InvariantResult [Line: 61]: Loop Invariant Derived loop invariant: ((n == 0) && (x == 0)) - InvariantResult [Line: 40]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 47]: Loop Invariant Derived loop invariant: ((n == 0) && (x == 0)) - InvariantResult [Line: 56]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: ((size == 0) && (i == 0)) - InvariantResult [Line: 33]: Loop Invariant Derived loop invariant: (n == 0) - InvariantResult [Line: 62]: Loop Invariant Derived loop invariant: 0 RESULT: Ultimate proved your program to be correct! [2023-12-18 16:18:37,708 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...