/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/standard_compare_ground.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-15 16:56:06,499 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-15 16:56:06,577 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-15 16:56:06,583 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-15 16:56:06,583 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-15 16:56:06,610 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-15 16:56:06,610 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-15 16:56:06,611 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-15 16:56:06,611 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-15 16:56:06,615 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-15 16:56:06,615 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-15 16:56:06,615 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-15 16:56:06,616 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-15 16:56:06,617 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-15 16:56:06,618 INFO L153 SettingsManager]: * Use SBE=true [2023-12-15 16:56:06,618 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-15 16:56:06,618 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-15 16:56:06,618 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-15 16:56:06,619 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-15 16:56:06,619 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-15 16:56:06,619 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-15 16:56:06,619 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-15 16:56:06,620 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-15 16:56:06,620 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-15 16:56:06,620 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-15 16:56:06,620 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-15 16:56:06,620 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-15 16:56:06,621 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-15 16:56:06,621 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-15 16:56:06,621 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-15 16:56:06,622 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-15 16:56:06,623 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-15 16:56:06,623 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 16:56:06,623 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-15 16:56:06,623 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-15 16:56:06,623 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-15 16:56:06,623 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-15 16:56:06,624 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-15 16:56:06,624 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-15 16:56:06,624 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-15 16:56:06,624 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-15 16:56:06,624 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-15 16:56:06,625 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-15 16:56:06,625 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-15 16:56:06,855 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-15 16:56:06,872 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-15 16:56:06,874 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-15 16:56:06,875 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-15 16:56:06,875 INFO L274 PluginConnector]: CDTParser initialized [2023-12-15 16:56:06,876 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-examples/standard_compare_ground.i [2023-12-15 16:56:07,985 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-15 16:56:08,167 INFO L384 CDTParser]: Found 1 translation units. [2023-12-15 16:56:08,168 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-examples/standard_compare_ground.i [2023-12-15 16:56:08,175 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1b6836fd4/d53d363ebe524357b7ec9d51ea66fa21/FLAG8e44c1ac7 [2023-12-15 16:56:08,190 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1b6836fd4/d53d363ebe524357b7ec9d51ea66fa21 [2023-12-15 16:56:08,192 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-15 16:56:08,193 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-15 16:56:08,196 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-15 16:56:08,196 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-15 16:56:08,200 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-15 16:56:08,200 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 04:56:08" (1/1) ... [2023-12-15 16:56:08,201 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d36a171 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:56:08, skipping insertion in model container [2023-12-15 16:56:08,201 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 04:56:08" (1/1) ... [2023-12-15 16:56:08,222 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-15 16:56:08,336 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/standard_compare_ground.i[816,829] [2023-12-15 16:56:08,347 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 16:56:08,355 INFO L202 MainTranslator]: Completed pre-run [2023-12-15 16:56:08,366 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/standard_compare_ground.i[816,829] [2023-12-15 16:56:08,372 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 16:56:08,384 INFO L206 MainTranslator]: Completed translation [2023-12-15 16:56:08,384 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:56:08 WrapperNode [2023-12-15 16:56:08,385 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-15 16:56:08,385 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-15 16:56:08,386 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-15 16:56:08,386 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-15 16:56:08,391 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:56:08" (1/1) ... [2023-12-15 16:56:08,399 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:56:08" (1/1) ... [2023-12-15 16:56:08,414 INFO L138 Inliner]: procedures = 16, calls = 19, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 73 [2023-12-15 16:56:08,414 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-15 16:56:08,415 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-15 16:56:08,415 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-15 16:56:08,415 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-15 16:56:08,423 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:56:08" (1/1) ... [2023-12-15 16:56:08,423 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:56:08" (1/1) ... [2023-12-15 16:56:08,424 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:56:08" (1/1) ... [2023-12-15 16:56:08,436 INFO L175 MemorySlicer]: Split 8 memory accesses to 3 slices as follows [2, 3, 3]. 38 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 2 writes are split as follows [0, 1, 1]. [2023-12-15 16:56:08,436 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:56:08" (1/1) ... [2023-12-15 16:56:08,437 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:56:08" (1/1) ... [2023-12-15 16:56:08,444 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:56:08" (1/1) ... [2023-12-15 16:56:08,447 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:56:08" (1/1) ... [2023-12-15 16:56:08,447 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:56:08" (1/1) ... [2023-12-15 16:56:08,448 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:56:08" (1/1) ... [2023-12-15 16:56:08,450 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-15 16:56:08,451 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-15 16:56:08,451 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-15 16:56:08,451 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-15 16:56:08,451 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:56:08" (1/1) ... [2023-12-15 16:56:08,463 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 16:56:08,472 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 16:56:08,485 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) [2023-12-15 16:56:08,492 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 [2023-12-15 16:56:08,509 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-15 16:56:08,509 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-15 16:56:08,509 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-12-15 16:56:08,509 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-12-15 16:56:08,509 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-15 16:56:08,509 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-12-15 16:56:08,509 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-12-15 16:56:08,509 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-12-15 16:56:08,509 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-15 16:56:08,510 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-15 16:56:08,510 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-12-15 16:56:08,510 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-12-15 16:56:08,510 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-12-15 16:56:08,510 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-15 16:56:08,565 INFO L241 CfgBuilder]: Building ICFG [2023-12-15 16:56:08,566 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-15 16:56:08,693 INFO L282 CfgBuilder]: Performing block encoding [2023-12-15 16:56:08,721 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-15 16:56:08,721 INFO L309 CfgBuilder]: Removed 3 assume(true) statements. [2023-12-15 16:56:08,722 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 04:56:08 BoogieIcfgContainer [2023-12-15 16:56:08,722 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-15 16:56:08,724 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-15 16:56:08,724 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-15 16:56:08,727 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-15 16:56:08,727 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 04:56:08" (1/3) ... [2023-12-15 16:56:08,727 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20896960 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 04:56:08, skipping insertion in model container [2023-12-15 16:56:08,727 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:56:08" (2/3) ... [2023-12-15 16:56:08,728 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20896960 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 04:56:08, skipping insertion in model container [2023-12-15 16:56:08,728 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 04:56:08" (3/3) ... [2023-12-15 16:56:08,729 INFO L112 eAbstractionObserver]: Analyzing ICFG standard_compare_ground.i [2023-12-15 16:56:08,742 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-15 16:56:08,742 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-15 16:56:08,776 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-15 16:56:08,781 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;@2273a162, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-15 16:56:08,781 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-15 16:56:08,784 INFO L276 IsEmpty]: Start isEmpty. Operand has 15 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 14 states have internal predecessors, (23), 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) [2023-12-15 16:56:08,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-12-15 16:56:08,789 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 16:56:08,789 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 16:56:08,790 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 16:56:08,794 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 16:56:08,794 INFO L85 PathProgramCache]: Analyzing trace with hash -1878423107, now seen corresponding path program 1 times [2023-12-15 16:56:08,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 16:56:08,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [839380424] [2023-12-15 16:56:08,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 16:56:08,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 16:56:08,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 16:56:08,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 16:56:08,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 16:56:08,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [839380424] [2023-12-15 16:56:08,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [839380424] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 16:56:08,977 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 16:56:08,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 16:56:08,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862493491] [2023-12-15 16:56:08,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 16:56:08,981 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 16:56:08,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 16:56:09,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 16:56:09,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 16:56:09,004 INFO L87 Difference]: Start difference. First operand has 15 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 14 states have internal predecessors, (23), 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 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 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) [2023-12-15 16:56:09,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 16:56:09,030 INFO L93 Difference]: Finished difference Result 29 states and 45 transitions. [2023-12-15 16:56:09,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 16:56:09,032 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), 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 8 [2023-12-15 16:56:09,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 16:56:09,039 INFO L225 Difference]: With dead ends: 29 [2023-12-15 16:56:09,039 INFO L226 Difference]: Without dead ends: 13 [2023-12-15 16:56:09,041 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 [2023-12-15 16:56:09,045 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 0 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 16:56:09,047 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 28 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 16:56:09,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2023-12-15 16:56:09,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2023-12-15 16:56:09,073 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) [2023-12-15 16:56:09,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 16 transitions. [2023-12-15 16:56:09,078 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 16 transitions. Word has length 8 [2023-12-15 16:56:09,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 16:56:09,079 INFO L495 AbstractCegarLoop]: Abstraction has 13 states and 16 transitions. [2023-12-15 16:56:09,079 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), 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) [2023-12-15 16:56:09,079 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 16 transitions. [2023-12-15 16:56:09,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-12-15 16:56:09,080 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 16:56:09,080 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 16:56:09,081 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-15 16:56:09,081 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 16:56:09,082 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 16:56:09,082 INFO L85 PathProgramCache]: Analyzing trace with hash 1920277334, now seen corresponding path program 1 times [2023-12-15 16:56:09,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 16:56:09,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148587316] [2023-12-15 16:56:09,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 16:56:09,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 16:56:09,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 16:56:09,201 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 16:56:09,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 16:56:09,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1148587316] [2023-12-15 16:56:09,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1148587316] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 16:56:09,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [627990308] [2023-12-15 16:56:09,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 16:56:09,203 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 16:56:09,203 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 16:56:09,206 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) [2023-12-15 16:56:09,227 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-15 16:56:09,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 16:56:09,290 INFO L262 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-15 16:56:09,295 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 16:56:09,312 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-15 16:56:09,313 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 16:56:09,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [627990308] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 16:56:09,315 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 16:56:09,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-12-15 16:56:09,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395908138] [2023-12-15 16:56:09,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 16:56:09,316 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 16:56:09,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 16:56:09,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 16:56:09,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-15 16:56:09,318 INFO L87 Difference]: Start difference. First operand 13 states and 16 transitions. Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 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) [2023-12-15 16:56:09,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 16:56:09,344 INFO L93 Difference]: Finished difference Result 22 states and 27 transitions. [2023-12-15 16:56:09,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 16:56:09,345 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 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 9 [2023-12-15 16:56:09,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 16:56:09,346 INFO L225 Difference]: With dead ends: 22 [2023-12-15 16:56:09,346 INFO L226 Difference]: Without dead ends: 16 [2023-12-15 16:56:09,347 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-15 16:56:09,348 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 3 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 16:56:09,348 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 18 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 16:56:09,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2023-12-15 16:56:09,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 14. [2023-12-15 16:56:09,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 13 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) [2023-12-15 16:56:09,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 17 transitions. [2023-12-15 16:56:09,356 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 17 transitions. Word has length 9 [2023-12-15 16:56:09,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 16:56:09,357 INFO L495 AbstractCegarLoop]: Abstraction has 14 states and 17 transitions. [2023-12-15 16:56:09,358 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 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) [2023-12-15 16:56:09,358 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 17 transitions. [2023-12-15 16:56:09,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-12-15 16:56:09,359 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 16:56:09,360 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 16:56:09,367 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-15 16:56:09,564 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 [2023-12-15 16:56:09,565 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 16:56:09,565 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 16:56:09,565 INFO L85 PathProgramCache]: Analyzing trace with hash 793031759, now seen corresponding path program 1 times [2023-12-15 16:56:09,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 16:56:09,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1983137904] [2023-12-15 16:56:09,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 16:56:09,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 16:56:09,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 16:56:09,676 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-15 16:56:09,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 16:56:09,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1983137904] [2023-12-15 16:56:09,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1983137904] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 16:56:09,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [885496001] [2023-12-15 16:56:09,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 16:56:09,680 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 16:56:09,680 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 16:56:09,683 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) [2023-12-15 16:56:09,689 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-15 16:56:09,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 16:56:09,748 INFO L262 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-15 16:56:09,750 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 16:56:09,777 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-15 16:56:09,777 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 16:56:09,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [885496001] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 16:56:09,778 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 16:56:09,778 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-12-15 16:56:09,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434035375] [2023-12-15 16:56:09,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 16:56:09,778 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 16:56:09,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 16:56:09,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 16:56:09,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-15 16:56:09,779 INFO L87 Difference]: Start difference. First operand 14 states and 17 transitions. Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 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) [2023-12-15 16:56:09,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 16:56:09,796 INFO L93 Difference]: Finished difference Result 23 states and 28 transitions. [2023-12-15 16:56:09,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 16:56:09,797 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 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 [2023-12-15 16:56:09,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 16:56:09,798 INFO L225 Difference]: With dead ends: 23 [2023-12-15 16:56:09,798 INFO L226 Difference]: Without dead ends: 14 [2023-12-15 16:56:09,798 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-15 16:56:09,801 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 2 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 16:56:09,802 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 24 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 16:56:09,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2023-12-15 16:56:09,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2023-12-15 16:56:09,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 13 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) [2023-12-15 16:56:09,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 16 transitions. [2023-12-15 16:56:09,808 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 16 transitions. Word has length 12 [2023-12-15 16:56:09,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 16:56:09,808 INFO L495 AbstractCegarLoop]: Abstraction has 14 states and 16 transitions. [2023-12-15 16:56:09,808 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 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) [2023-12-15 16:56:09,808 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2023-12-15 16:56:09,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-12-15 16:56:09,809 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 16:56:09,809 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 16:56:09,816 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-12-15 16:56:10,009 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,SelfDestructingSolverStorable2 [2023-12-15 16:56:10,010 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 16:56:10,010 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 16:56:10,010 INFO L85 PathProgramCache]: Analyzing trace with hash -1726928175, now seen corresponding path program 1 times [2023-12-15 16:56:10,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 16:56:10,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818855866] [2023-12-15 16:56:10,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 16:56:10,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 16:56:10,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 16:56:10,082 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-15 16:56:10,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 16:56:10,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818855866] [2023-12-15 16:56:10,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [818855866] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 16:56:10,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [911343090] [2023-12-15 16:56:10,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 16:56:10,083 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 16:56:10,083 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 16:56:10,084 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) [2023-12-15 16:56:10,090 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-15 16:56:10,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 16:56:10,154 INFO L262 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-15 16:56:10,155 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 16:56:10,186 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-15 16:56:10,186 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 16:56:10,208 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-15 16:56:10,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [911343090] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 16:56:10,209 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-15 16:56:10,209 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-12-15 16:56:10,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044281889] [2023-12-15 16:56:10,209 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-15 16:56:10,210 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 16:56:10,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 16:56:10,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 16:56:10,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-12-15 16:56:10,213 INFO L87 Difference]: Start difference. First operand 14 states and 16 transitions. Second operand has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 6 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) [2023-12-15 16:56:10,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 16:56:10,233 INFO L93 Difference]: Finished difference Result 28 states and 34 transitions. [2023-12-15 16:56:10,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-15 16:56:10,234 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 6 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) Word has length 12 [2023-12-15 16:56:10,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 16:56:10,234 INFO L225 Difference]: With dead ends: 28 [2023-12-15 16:56:10,234 INFO L226 Difference]: Without dead ends: 17 [2023-12-15 16:56:10,234 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-12-15 16:56:10,237 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 0 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 16:56:10,238 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 29 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 16:56:10,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2023-12-15 16:56:10,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2023-12-15 16:56:10,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.1875) internal successors, (19), 16 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) [2023-12-15 16:56:10,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2023-12-15 16:56:10,244 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 12 [2023-12-15 16:56:10,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 16:56:10,244 INFO L495 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2023-12-15 16:56:10,244 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 6 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) [2023-12-15 16:56:10,244 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2023-12-15 16:56:10,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-12-15 16:56:10,245 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 16:56:10,246 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 16:56:10,251 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-15 16:56:10,451 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 16:56:10,452 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 16:56:10,452 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 16:56:10,452 INFO L85 PathProgramCache]: Analyzing trace with hash 490035317, now seen corresponding path program 2 times [2023-12-15 16:56:10,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 16:56:10,453 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1404270672] [2023-12-15 16:56:10,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 16:56:10,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 16:56:10,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 16:56:10,527 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-15 16:56:10,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 16:56:10,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1404270672] [2023-12-15 16:56:10,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1404270672] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 16:56:10,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [338049815] [2023-12-15 16:56:10,527 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-15 16:56:10,528 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 16:56:10,528 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 16:56:10,529 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) [2023-12-15 16:56:10,551 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-15 16:56:10,603 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-15 16:56:10,603 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-15 16:56:10,605 INFO L262 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-15 16:56:10,608 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 16:56:10,664 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-15 16:56:10,664 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 16:56:10,728 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-15 16:56:10,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [338049815] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 16:56:10,730 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-15 16:56:10,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6, 6] total 14 [2023-12-15 16:56:10,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088685811] [2023-12-15 16:56:10,738 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-15 16:56:10,738 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-15 16:56:10,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 16:56:10,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-15 16:56:10,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2023-12-15 16:56:10,741 INFO L87 Difference]: Start difference. First operand 17 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) [2023-12-15 16:56:10,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 16:56:10,793 INFO L93 Difference]: Finished difference Result 39 states and 49 transitions. [2023-12-15 16:56:10,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-15 16:56:10,793 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 15 [2023-12-15 16:56:10,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 16:56:10,794 INFO L225 Difference]: With dead ends: 39 [2023-12-15 16:56:10,794 INFO L226 Difference]: Without dead ends: 28 [2023-12-15 16:56:10,795 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2023-12-15 16:56:10,796 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 2 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 16:56:10,796 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 45 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 16:56:10,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2023-12-15 16:56:10,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 26. [2023-12-15 16:56:10,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 25 states have (on average 1.12) internal successors, (28), 25 states have internal predecessors, (28), 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) [2023-12-15 16:56:10,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 28 transitions. [2023-12-15 16:56:10,805 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 28 transitions. Word has length 15 [2023-12-15 16:56:10,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 16:56:10,805 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 28 transitions. [2023-12-15 16:56:10,806 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) [2023-12-15 16:56:10,806 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 28 transitions. [2023-12-15 16:56:10,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-12-15 16:56:10,807 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 16:56:10,807 INFO L195 NwaCegarLoop]: trace histogram [10, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 16:56:10,813 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-15 16:56:11,013 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 16:56:11,013 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 16:56:11,013 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 16:56:11,014 INFO L85 PathProgramCache]: Analyzing trace with hash -1821297966, now seen corresponding path program 3 times [2023-12-15 16:56:11,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 16:56:11,014 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942374787] [2023-12-15 16:56:11,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 16:56:11,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 16:56:11,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 16:56:11,327 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-12-15 16:56:11,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 16:56:11,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1942374787] [2023-12-15 16:56:11,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1942374787] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 16:56:11,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [150460116] [2023-12-15 16:56:11,328 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-15 16:56:11,328 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 16:56:11,328 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 16:56:11,329 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) [2023-12-15 16:56:11,351 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-15 16:56:11,409 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-12-15 16:56:11,409 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-15 16:56:11,410 INFO L262 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-15 16:56:11,415 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 16:56:11,454 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-12-15 16:56:11,455 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 16:56:11,496 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-12-15 16:56:11,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [150460116] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 16:56:11,497 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-15 16:56:11,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 5, 5] total 19 [2023-12-15 16:56:11,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427093197] [2023-12-15 16:56:11,497 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-15 16:56:11,498 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-12-15 16:56:11,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 16:56:11,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-12-15 16:56:11,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=237, Unknown=0, NotChecked=0, Total=342 [2023-12-15 16:56:11,499 INFO L87 Difference]: Start difference. First operand 26 states and 28 transitions. Second operand has 19 states, 19 states have (on average 2.1052631578947367) internal successors, (40), 19 states have internal predecessors, (40), 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) [2023-12-15 16:56:11,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 16:56:11,553 INFO L93 Difference]: Finished difference Result 53 states and 61 transitions. [2023-12-15 16:56:11,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-12-15 16:56:11,554 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.1052631578947367) internal successors, (40), 19 states have internal predecessors, (40), 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 24 [2023-12-15 16:56:11,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 16:56:11,554 INFO L225 Difference]: With dead ends: 53 [2023-12-15 16:56:11,554 INFO L226 Difference]: Without dead ends: 39 [2023-12-15 16:56:11,555 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=105, Invalid=237, Unknown=0, NotChecked=0, Total=342 [2023-12-15 16:56:11,555 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 4 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 16:56:11,556 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 47 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 16:56:11,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2023-12-15 16:56:11,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2023-12-15 16:56:11,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 38 states have (on average 1.0789473684210527) internal successors, (41), 38 states have internal predecessors, (41), 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) [2023-12-15 16:56:11,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 41 transitions. [2023-12-15 16:56:11,561 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 41 transitions. Word has length 24 [2023-12-15 16:56:11,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 16:56:11,561 INFO L495 AbstractCegarLoop]: Abstraction has 39 states and 41 transitions. [2023-12-15 16:56:11,561 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.1052631578947367) internal successors, (40), 19 states have internal predecessors, (40), 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) [2023-12-15 16:56:11,561 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 41 transitions. [2023-12-15 16:56:11,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-12-15 16:56:11,562 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 16:56:11,562 INFO L195 NwaCegarLoop]: trace histogram [11, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 16:56:11,571 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-15 16:56:11,767 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 16:56:11,767 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 16:56:11,768 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 16:56:11,768 INFO L85 PathProgramCache]: Analyzing trace with hash 350587702, now seen corresponding path program 4 times [2023-12-15 16:56:11,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 16:56:11,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1131692374] [2023-12-15 16:56:11,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 16:56:11,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 16:56:11,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 16:56:12,014 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2023-12-15 16:56:12,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 16:56:12,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1131692374] [2023-12-15 16:56:12,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1131692374] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 16:56:12,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2069762202] [2023-12-15 16:56:12,014 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-15 16:56:12,014 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 16:56:12,015 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 16:56:12,016 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) [2023-12-15 16:56:12,035 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-15 16:56:12,122 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-15 16:56:12,122 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-15 16:56:12,123 INFO L262 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-15 16:56:12,125 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 16:56:12,245 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2023-12-15 16:56:12,245 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 16:56:12,392 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2023-12-15 16:56:12,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2069762202] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 16:56:12,392 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-15 16:56:12,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9, 9] total 28 [2023-12-15 16:56:12,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807530335] [2023-12-15 16:56:12,393 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-15 16:56:12,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-12-15 16:56:12,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 16:56:12,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-12-15 16:56:12,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=546, Unknown=0, NotChecked=0, Total=756 [2023-12-15 16:56:12,396 INFO L87 Difference]: Start difference. First operand 39 states and 41 transitions. Second operand has 28 states, 28 states have (on average 2.3214285714285716) internal successors, (65), 28 states have internal predecessors, (65), 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) [2023-12-15 16:56:12,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 16:56:12,479 INFO L93 Difference]: Finished difference Result 90 states and 102 transitions. [2023-12-15 16:56:12,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-12-15 16:56:12,480 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 2.3214285714285716) internal successors, (65), 28 states have internal predecessors, (65), 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 37 [2023-12-15 16:56:12,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 16:56:12,481 INFO L225 Difference]: With dead ends: 90 [2023-12-15 16:56:12,481 INFO L226 Difference]: Without dead ends: 64 [2023-12-15 16:56:12,481 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=210, Invalid=546, Unknown=0, NotChecked=0, Total=756 [2023-12-15 16:56:12,482 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 4 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 16:56:12,482 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 80 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 16:56:12,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2023-12-15 16:56:12,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2023-12-15 16:56:12,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 63 states have (on average 1.0476190476190477) internal successors, (66), 63 states have internal predecessors, (66), 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) [2023-12-15 16:56:12,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 66 transitions. [2023-12-15 16:56:12,488 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 66 transitions. Word has length 37 [2023-12-15 16:56:12,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 16:56:12,488 INFO L495 AbstractCegarLoop]: Abstraction has 64 states and 66 transitions. [2023-12-15 16:56:12,488 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 2.3214285714285716) internal successors, (65), 28 states have internal predecessors, (65), 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) [2023-12-15 16:56:12,488 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 66 transitions. [2023-12-15 16:56:12,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-12-15 16:56:12,489 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 16:56:12,490 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 12, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 16:56:12,495 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-15 16:56:12,693 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 16:56:12,693 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 16:56:12,693 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 16:56:12,693 INFO L85 PathProgramCache]: Analyzing trace with hash 1687502354, now seen corresponding path program 5 times [2023-12-15 16:56:12,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 16:56:12,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172268511] [2023-12-15 16:56:12,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 16:56:12,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 16:56:12,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 16:56:13,039 INFO L134 CoverageAnalysis]: Checked inductivity of 365 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 287 trivial. 0 not checked. [2023-12-15 16:56:13,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 16:56:13,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [172268511] [2023-12-15 16:56:13,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [172268511] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 16:56:13,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [156729749] [2023-12-15 16:56:13,040 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-15 16:56:13,040 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 16:56:13,040 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 16:56:13,041 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 16:56:13,064 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-15 16:56:15,894 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 15 check-sat command(s) [2023-12-15 16:56:15,894 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-15 16:56:15,900 INFO L262 TraceCheckSpWp]: Trace formula consists of 368 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-15 16:56:15,903 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 16:56:16,157 INFO L134 CoverageAnalysis]: Checked inductivity of 365 backedges. 0 proven. 287 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2023-12-15 16:56:16,157 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 16:56:16,587 INFO L134 CoverageAnalysis]: Checked inductivity of 365 backedges. 0 proven. 287 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2023-12-15 16:56:16,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [156729749] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 16:56:16,587 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-15 16:56:16,587 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 17, 17] total 45 [2023-12-15 16:56:16,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607813950] [2023-12-15 16:56:16,588 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-15 16:56:16,588 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2023-12-15 16:56:16,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 16:56:16,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2023-12-15 16:56:16,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=600, Invalid=1380, Unknown=0, NotChecked=0, Total=1980 [2023-12-15 16:56:16,590 INFO L87 Difference]: Start difference. First operand 64 states and 66 transitions. Second operand has 45 states, 45 states have (on average 2.533333333333333) internal successors, (114), 45 states have internal predecessors, (114), 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) [2023-12-15 16:56:16,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 16:56:16,700 INFO L93 Difference]: Finished difference Result 163 states and 183 transitions. [2023-12-15 16:56:16,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2023-12-15 16:56:16,701 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 2.533333333333333) internal successors, (114), 45 states have internal predecessors, (114), 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 62 [2023-12-15 16:56:16,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 16:56:16,704 INFO L225 Difference]: With dead ends: 163 [2023-12-15 16:56:16,704 INFO L226 Difference]: Without dead ends: 113 [2023-12-15 16:56:16,706 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 360 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=600, Invalid=1380, Unknown=0, NotChecked=0, Total=1980 [2023-12-15 16:56:16,707 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 4 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 16:56:16,707 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 83 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 16:56:16,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2023-12-15 16:56:16,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 113. [2023-12-15 16:56:16,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 112 states have (on average 1.0267857142857142) internal successors, (115), 112 states have internal predecessors, (115), 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) [2023-12-15 16:56:16,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 115 transitions. [2023-12-15 16:56:16,729 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 115 transitions. Word has length 62 [2023-12-15 16:56:16,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 16:56:16,730 INFO L495 AbstractCegarLoop]: Abstraction has 113 states and 115 transitions. [2023-12-15 16:56:16,730 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 2.533333333333333) internal successors, (114), 45 states have internal predecessors, (114), 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) [2023-12-15 16:56:16,730 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 115 transitions. [2023-12-15 16:56:16,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-12-15 16:56:16,731 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 16:56:16,731 INFO L195 NwaCegarLoop]: trace histogram [30, 30, 30, 13, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 16:56:16,745 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-15 16:56:16,931 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 16:56:16,932 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 16:56:16,932 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 16:56:16,932 INFO L85 PathProgramCache]: Analyzing trace with hash -1599127498, now seen corresponding path program 6 times [2023-12-15 16:56:16,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 16:56:16,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013394606] [2023-12-15 16:56:16,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 16:56:16,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 16:56:16,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 16:56:17,274 INFO L134 CoverageAnalysis]: Checked inductivity of 1426 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 1335 trivial. 0 not checked. [2023-12-15 16:56:17,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 16:56:17,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2013394606] [2023-12-15 16:56:17,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2013394606] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 16:56:17,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1272743440] [2023-12-15 16:56:17,275 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-15 16:56:17,275 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 16:56:17,275 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 16:56:17,276 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 16:56:17,287 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-15 16:56:17,397 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2023-12-15 16:56:17,397 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-15 16:56:17,399 INFO L262 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 27 conjunts are in the unsatisfiable core [2023-12-15 16:56:17,402 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 16:56:18,241 INFO L134 CoverageAnalysis]: Checked inductivity of 1426 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 1367 trivial. 0 not checked. [2023-12-15 16:56:18,241 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 16:56:18,645 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2023-12-15 16:56:18,646 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 23 [2023-12-15 16:56:18,665 INFO L134 CoverageAnalysis]: Checked inductivity of 1426 backedges. 29 proven. 30 refuted. 0 times theorem prover too weak. 1367 trivial. 0 not checked. [2023-12-15 16:56:18,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1272743440] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 16:56:18,665 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-15 16:56:18,665 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 7, 7] total 27 [2023-12-15 16:56:18,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097353946] [2023-12-15 16:56:18,666 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-15 16:56:18,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-12-15 16:56:18,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 16:56:18,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-12-15 16:56:18,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=547, Unknown=0, NotChecked=0, Total=702 [2023-12-15 16:56:18,667 INFO L87 Difference]: Start difference. First operand 113 states and 115 transitions. Second operand has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 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) [2023-12-15 16:56:19,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 16:56:19,054 INFO L93 Difference]: Finished difference Result 215 states and 220 transitions. [2023-12-15 16:56:19,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-12-15 16:56:19,055 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 111 [2023-12-15 16:56:19,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 16:56:19,055 INFO L225 Difference]: With dead ends: 215 [2023-12-15 16:56:19,055 INFO L226 Difference]: Without dead ends: 117 [2023-12-15 16:56:19,057 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 210 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 344 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=435, Invalid=1635, Unknown=0, NotChecked=0, Total=2070 [2023-12-15 16:56:19,057 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 23 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 16:56:19,057 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 48 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 16:56:19,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2023-12-15 16:56:19,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 116. [2023-12-15 16:56:19,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 115 states have (on average 1.0260869565217392) internal successors, (118), 115 states have internal predecessors, (118), 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) [2023-12-15 16:56:19,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 118 transitions. [2023-12-15 16:56:19,067 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 118 transitions. Word has length 111 [2023-12-15 16:56:19,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 16:56:19,067 INFO L495 AbstractCegarLoop]: Abstraction has 116 states and 118 transitions. [2023-12-15 16:56:19,067 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 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) [2023-12-15 16:56:19,067 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 118 transitions. [2023-12-15 16:56:19,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-12-15 16:56:19,073 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 16:56:19,073 INFO L195 NwaCegarLoop]: trace histogram [30, 30, 30, 14, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 16:56:19,081 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-15 16:56:19,279 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2023-12-15 16:56:19,279 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 16:56:19,280 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 16:56:19,280 INFO L85 PathProgramCache]: Analyzing trace with hash 1768365712, now seen corresponding path program 1 times [2023-12-15 16:56:19,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 16:56:19,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488279283] [2023-12-15 16:56:19,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 16:56:19,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 16:56:19,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 16:56:19,683 INFO L134 CoverageAnalysis]: Checked inductivity of 1442 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 1337 trivial. 0 not checked. [2023-12-15 16:56:19,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 16:56:19,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488279283] [2023-12-15 16:56:19,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [488279283] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 16:56:19,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1393973517] [2023-12-15 16:56:19,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 16:56:19,684 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 16:56:19,684 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 16:56:19,685 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 16:56:19,703 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-15 16:56:19,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 16:56:19,856 INFO L262 TraceCheckSpWp]: Trace formula consists of 554 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-15 16:56:19,867 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 16:56:19,899 INFO L134 CoverageAnalysis]: Checked inductivity of 1442 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 1337 trivial. 0 not checked. [2023-12-15 16:56:19,899 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 16:56:20,220 INFO L134 CoverageAnalysis]: Checked inductivity of 1442 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 1337 trivial. 0 not checked. [2023-12-15 16:56:20,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1393973517] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 16:56:20,220 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-15 16:56:20,220 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 32 [2023-12-15 16:56:20,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265854206] [2023-12-15 16:56:20,221 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-15 16:56:20,221 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-12-15 16:56:20,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 16:56:20,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-12-15 16:56:20,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=528, Invalid=528, Unknown=0, NotChecked=0, Total=1056 [2023-12-15 16:56:20,223 INFO L87 Difference]: Start difference. First operand 116 states and 118 transitions. Second operand has 33 states, 33 states have (on average 1.3636363636363635) internal successors, (45), 32 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 16:56:20,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 16:56:20,263 INFO L93 Difference]: Finished difference Result 232 states and 251 transitions. [2023-12-15 16:56:20,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-12-15 16:56:20,264 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 1.3636363636363635) internal successors, (45), 32 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 115 [2023-12-15 16:56:20,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 16:56:20,264 INFO L225 Difference]: With dead ends: 232 [2023-12-15 16:56:20,264 INFO L226 Difference]: Without dead ends: 132 [2023-12-15 16:56:20,267 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 244 GetRequests, 213 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=528, Invalid=528, Unknown=0, NotChecked=0, Total=1056 [2023-12-15 16:56:20,268 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 0 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 16:56:20,269 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 20 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 16:56:20,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2023-12-15 16:56:20,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 132. [2023-12-15 16:56:20,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 131 states have (on average 1.0229007633587786) internal successors, (134), 131 states have internal predecessors, (134), 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) [2023-12-15 16:56:20,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 134 transitions. [2023-12-15 16:56:20,283 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 134 transitions. Word has length 115 [2023-12-15 16:56:20,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 16:56:20,283 INFO L495 AbstractCegarLoop]: Abstraction has 132 states and 134 transitions. [2023-12-15 16:56:20,283 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 1.3636363636363635) internal successors, (45), 32 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 16:56:20,283 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 134 transitions. [2023-12-15 16:56:20,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2023-12-15 16:56:20,287 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 16:56:20,287 INFO L195 NwaCegarLoop]: trace histogram [30, 30, 30, 30, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 16:56:20,293 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-12-15 16:56:20,493 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-12-15 16:56:20,493 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 16:56:20,494 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 16:56:20,494 INFO L85 PathProgramCache]: Analyzing trace with hash 165411472, now seen corresponding path program 2 times [2023-12-15 16:56:20,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 16:56:20,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1053449518] [2023-12-15 16:56:20,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 16:56:20,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 16:56:20,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 16:56:21,542 INFO L134 CoverageAnalysis]: Checked inductivity of 1802 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 1337 trivial. 0 not checked. [2023-12-15 16:56:21,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 16:56:21,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1053449518] [2023-12-15 16:56:21,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1053449518] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 16:56:21,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1898364023] [2023-12-15 16:56:21,542 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-15 16:56:21,542 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 16:56:21,543 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 16:56:21,543 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 16:56:21,546 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-15 16:56:21,759 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-15 16:56:21,759 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-15 16:56:21,764 INFO L262 TraceCheckSpWp]: Trace formula consists of 794 conjuncts, 32 conjunts are in the unsatisfiable core [2023-12-15 16:56:21,767 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 16:56:21,828 INFO L134 CoverageAnalysis]: Checked inductivity of 1802 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 1337 trivial. 0 not checked. [2023-12-15 16:56:21,828 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 16:56:22,961 INFO L134 CoverageAnalysis]: Checked inductivity of 1802 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 1337 trivial. 0 not checked. [2023-12-15 16:56:22,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1898364023] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 16:56:22,961 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-15 16:56:22,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32, 32] total 64 [2023-12-15 16:56:22,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931858205] [2023-12-15 16:56:22,962 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-15 16:56:22,962 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 65 states [2023-12-15 16:56:22,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 16:56:22,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2023-12-15 16:56:22,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2080, Invalid=2080, Unknown=0, NotChecked=0, Total=4160 [2023-12-15 16:56:22,965 INFO L87 Difference]: Start difference. First operand 132 states and 134 transitions. Second operand has 65 states, 65 states have (on average 1.1846153846153846) internal successors, (77), 64 states have internal predecessors, (77), 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) [2023-12-15 16:56:23,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 16:56:23,043 INFO L93 Difference]: Finished difference Result 264 states and 299 transitions. [2023-12-15 16:56:23,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2023-12-15 16:56:23,044 INFO L78 Accepts]: Start accepts. Automaton has has 65 states, 65 states have (on average 1.1846153846153846) internal successors, (77), 64 states have internal predecessors, (77), 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 131 [2023-12-15 16:56:23,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 16:56:23,045 INFO L225 Difference]: With dead ends: 264 [2023-12-15 16:56:23,045 INFO L226 Difference]: Without dead ends: 164 [2023-12-15 16:56:23,048 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 292 GetRequests, 229 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=2080, Invalid=2080, Unknown=0, NotChecked=0, Total=4160 [2023-12-15 16:56:23,048 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 0 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 16:56:23,049 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 29 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 16:56:23,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2023-12-15 16:56:23,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 164. [2023-12-15 16:56:23,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 163 states have (on average 1.01840490797546) internal successors, (166), 163 states have internal predecessors, (166), 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) [2023-12-15 16:56:23,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 166 transitions. [2023-12-15 16:56:23,061 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 166 transitions. Word has length 131 [2023-12-15 16:56:23,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 16:56:23,062 INFO L495 AbstractCegarLoop]: Abstraction has 164 states and 166 transitions. [2023-12-15 16:56:23,062 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 65 states, 65 states have (on average 1.1846153846153846) internal successors, (77), 64 states have internal predecessors, (77), 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) [2023-12-15 16:56:23,062 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 166 transitions. [2023-12-15 16:56:23,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2023-12-15 16:56:23,064 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 16:56:23,064 INFO L195 NwaCegarLoop]: trace histogram [62, 30, 30, 30, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 16:56:23,072 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-12-15 16:56:23,270 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-12-15 16:56:23,271 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 16:56:23,271 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 16:56:23,271 INFO L85 PathProgramCache]: Analyzing trace with hash 1931326096, now seen corresponding path program 3 times [2023-12-15 16:56:23,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 16:56:23,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913322441] [2023-12-15 16:56:23,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 16:56:23,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 16:56:23,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 16:56:26,363 INFO L134 CoverageAnalysis]: Checked inductivity of 3290 backedges. 0 proven. 1953 refuted. 0 times theorem prover too weak. 1337 trivial. 0 not checked. [2023-12-15 16:56:26,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 16:56:26,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1913322441] [2023-12-15 16:56:26,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1913322441] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 16:56:26,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [821481738] [2023-12-15 16:56:26,363 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-15 16:56:26,364 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 16:56:26,364 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 16:56:26,369 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 16:56:26,376 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-15 16:56:26,724 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2023-12-15 16:56:26,724 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-15 16:56:26,727 INFO L262 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 33 conjunts are in the unsatisfiable core [2023-12-15 16:56:26,731 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 16:56:26,926 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-12-15 16:56:27,876 INFO L134 CoverageAnalysis]: Checked inductivity of 3290 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 3143 trivial. 0 not checked. [2023-12-15 16:56:27,876 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 16:56:28,411 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2023-12-15 16:56:28,412 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 25 [2023-12-15 16:56:28,552 INFO L134 CoverageAnalysis]: Checked inductivity of 3290 backedges. 28 proven. 119 refuted. 0 times theorem prover too weak. 3143 trivial. 0 not checked. [2023-12-15 16:56:28,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [821481738] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 16:56:28,552 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-15 16:56:28,552 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [64, 9, 9] total 80 [2023-12-15 16:56:28,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819095890] [2023-12-15 16:56:28,552 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-15 16:56:28,553 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 80 states [2023-12-15 16:56:28,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 16:56:28,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2023-12-15 16:56:28,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2129, Invalid=4191, Unknown=0, NotChecked=0, Total=6320 [2023-12-15 16:56:28,555 INFO L87 Difference]: Start difference. First operand 164 states and 166 transitions. Second operand has 80 states, 80 states have (on average 1.4125) internal successors, (113), 80 states have internal predecessors, (113), 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) [2023-12-15 16:56:31,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 16:56:31,139 INFO L93 Difference]: Finished difference Result 269 states and 274 transitions. [2023-12-15 16:56:31,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2023-12-15 16:56:31,139 INFO L78 Accepts]: Start accepts. Automaton has has 80 states, 80 states have (on average 1.4125) internal successors, (113), 80 states have internal predecessors, (113), 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 163 [2023-12-15 16:56:31,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 16:56:31,140 INFO L225 Difference]: With dead ends: 269 [2023-12-15 16:56:31,140 INFO L226 Difference]: Without dead ends: 169 [2023-12-15 16:56:31,144 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 458 GetRequests, 310 SyntacticMatches, 0 SemanticMatches, 148 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3407 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=6348, Invalid=16002, Unknown=0, NotChecked=0, Total=22350 [2023-12-15 16:56:31,145 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 37 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 270 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 272 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 270 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-15 16:56:31,145 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 92 Invalid, 272 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 270 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-15 16:56:31,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2023-12-15 16:56:31,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 168. [2023-12-15 16:56:31,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 167 states have (on average 1.0179640718562875) internal successors, (170), 167 states have internal predecessors, (170), 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) [2023-12-15 16:56:31,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 170 transitions. [2023-12-15 16:56:31,157 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 170 transitions. Word has length 163 [2023-12-15 16:56:31,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 16:56:31,157 INFO L495 AbstractCegarLoop]: Abstraction has 168 states and 170 transitions. [2023-12-15 16:56:31,158 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 80 states, 80 states have (on average 1.4125) internal successors, (113), 80 states have internal predecessors, (113), 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) [2023-12-15 16:56:31,158 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 170 transitions. [2023-12-15 16:56:31,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2023-12-15 16:56:31,159 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 16:56:31,159 INFO L195 NwaCegarLoop]: trace histogram [63, 30, 30, 30, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 16:56:31,165 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-12-15 16:56:31,365 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-12-15 16:56:31,366 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 16:56:31,366 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 16:56:31,366 INFO L85 PathProgramCache]: Analyzing trace with hash -1806709770, now seen corresponding path program 4 times [2023-12-15 16:56:31,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 16:56:31,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630114378] [2023-12-15 16:56:31,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 16:56:31,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 16:56:31,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 16:56:34,444 INFO L134 CoverageAnalysis]: Checked inductivity of 3358 backedges. 0 proven. 2016 refuted. 0 times theorem prover too weak. 1342 trivial. 0 not checked. [2023-12-15 16:56:34,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 16:56:34,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630114378] [2023-12-15 16:56:34,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1630114378] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 16:56:34,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1328977121] [2023-12-15 16:56:34,444 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-15 16:56:34,445 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 16:56:34,445 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 16:56:34,457 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 16:56:34,503 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-15 16:56:34,851 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-15 16:56:34,851 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-15 16:56:34,858 INFO L262 TraceCheckSpWp]: Trace formula consists of 1301 conjuncts, 32 conjunts are in the unsatisfiable core [2023-12-15 16:56:34,861 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 16:56:35,937 INFO L134 CoverageAnalysis]: Checked inductivity of 3358 backedges. 0 proven. 1335 refuted. 0 times theorem prover too weak. 2023 trivial. 0 not checked. [2023-12-15 16:56:35,937 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 16:56:37,677 INFO L134 CoverageAnalysis]: Checked inductivity of 3358 backedges. 0 proven. 1335 refuted. 0 times theorem prover too weak. 2023 trivial. 0 not checked. [2023-12-15 16:56:37,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1328977121] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 16:56:37,677 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-15 16:56:37,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [65, 33, 33] total 128 [2023-12-15 16:56:37,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107035288] [2023-12-15 16:56:37,678 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-15 16:56:37,678 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 128 states [2023-12-15 16:56:37,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 16:56:37,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 128 interpolants. [2023-12-15 16:56:37,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4160, Invalid=12096, Unknown=0, NotChecked=0, Total=16256 [2023-12-15 16:56:37,683 INFO L87 Difference]: Start difference. First operand 168 states and 170 transitions. Second operand has 128 states, 128 states have (on average 2.0546875) internal successors, (263), 128 states have internal predecessors, (263), 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) [2023-12-15 16:56:37,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 16:56:37,953 INFO L93 Difference]: Finished difference Result 368 states and 404 transitions. [2023-12-15 16:56:37,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 128 states. [2023-12-15 16:56:37,954 INFO L78 Accepts]: Start accepts. Automaton has has 128 states, 128 states have (on average 2.0546875) internal successors, (263), 128 states have internal predecessors, (263), 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 167 [2023-12-15 16:56:37,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 16:56:37,955 INFO L225 Difference]: With dead ends: 368 [2023-12-15 16:56:37,955 INFO L226 Difference]: Without dead ends: 265 [2023-12-15 16:56:37,957 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 397 GetRequests, 271 SyntacticMatches, 0 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3906 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=4160, Invalid=12096, Unknown=0, NotChecked=0, Total=16256 [2023-12-15 16:56:37,958 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 4 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 240 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 242 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 240 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-15 16:56:37,958 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 140 Invalid, 242 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 240 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-15 16:56:37,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2023-12-15 16:56:37,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 265. [2023-12-15 16:56:37,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 265 states, 264 states have (on average 1.0113636363636365) internal successors, (267), 264 states have internal predecessors, (267), 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) [2023-12-15 16:56:37,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 267 transitions. [2023-12-15 16:56:37,971 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 267 transitions. Word has length 167 [2023-12-15 16:56:37,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 16:56:37,972 INFO L495 AbstractCegarLoop]: Abstraction has 265 states and 267 transitions. [2023-12-15 16:56:37,972 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 128 states, 128 states have (on average 2.0546875) internal successors, (263), 128 states have internal predecessors, (263), 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) [2023-12-15 16:56:37,972 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 267 transitions. [2023-12-15 16:56:37,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2023-12-15 16:56:37,975 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 16:56:37,975 INFO L195 NwaCegarLoop]: trace histogram [64, 62, 62, 62, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 16:56:37,984 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-12-15 16:56:38,181 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-12-15 16:56:38,182 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 16:56:38,182 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 16:56:38,182 INFO L85 PathProgramCache]: Analyzing trace with hash -1162869422, now seen corresponding path program 5 times [2023-12-15 16:56:38,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 16:56:38,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387771005] [2023-12-15 16:56:38,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 16:56:38,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 16:56:38,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 16:56:41,241 INFO L134 CoverageAnalysis]: Checked inductivity of 7822 backedges. 0 proven. 2080 refuted. 0 times theorem prover too weak. 5742 trivial. 0 not checked. [2023-12-15 16:56:41,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 16:56:41,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1387771005] [2023-12-15 16:56:41,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1387771005] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 16:56:41,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [435498048] [2023-12-15 16:56:41,242 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-15 16:56:41,242 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 16:56:41,242 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 16:56:41,243 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 16:56:41,250 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process Received shutdown request... [2023-12-15 16:57:13,109 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-15 16:57:13,133 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-15 16:57:14,142 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 [2023-12-15 16:57:14,310 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forcibly destroying the process [2023-12-15 16:57:14,317 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 16:57:14,318 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-15 16:57:14,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [66] total 66 [2023-12-15 16:57:14,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060077101] [2023-12-15 16:57:14,318 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-15 16:57:14,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 67 states [2023-12-15 16:57:14,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 16:57:14,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2023-12-15 16:57:14,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2211, Invalid=2211, Unknown=0, NotChecked=0, Total=4422 [2023-12-15 16:57:14,320 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 137 [2023-12-15 16:57:14,320 INFO L87 Difference]: Start difference. First operand 265 states and 267 transitions. Second operand has 67 states, 67 states have (on average 1.1492537313432836) internal successors, (77), 66 states have internal predecessors, (77), 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) [2023-12-15 16:57:14,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-15 16:57:14,322 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=2211, Invalid=2211, Unknown=0, NotChecked=0, Total=4422 [2023-12-15 16:57:14,323 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 16:57:14,323 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 16:57:14,324 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-15 16:57:14,324 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-15 16:57:14,325 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (265states) and FLOYD_HOARE automaton (currently 2 states, 67 states before enhancement),while ReachableStatesComputation was computing reachable states (1 states constructed, input type IntersectNwa). [2023-12-15 16:57:14,329 INFO L445 BasicCegarLoop]: Path program histogram: [6, 5, 1, 1, 1] [2023-12-15 16:57:14,332 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-15 16:57:14,333 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.12 04:57:14 BoogieIcfgContainer [2023-12-15 16:57:14,333 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-15 16:57:14,334 INFO L158 Benchmark]: Toolchain (without parser) took 66140.81ms. Allocated memory was 284.2MB in the beginning and 637.5MB in the end (delta: 353.4MB). Free memory was 231.6MB in the beginning and 485.9MB in the end (delta: -254.3MB). Peak memory consumption was 99.6MB. Max. memory is 8.0GB. [2023-12-15 16:57:14,334 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 191.9MB. Free memory was 140.5MB in the beginning and 140.4MB in the end (delta: 132.8kB). There was no memory consumed. Max. memory is 8.0GB. [2023-12-15 16:57:14,334 INFO L158 Benchmark]: CACSL2BoogieTranslator took 189.09ms. Allocated memory is still 284.2MB. Free memory was 231.6MB in the beginning and 220.6MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2023-12-15 16:57:14,334 INFO L158 Benchmark]: Boogie Procedure Inliner took 28.59ms. Allocated memory is still 284.2MB. Free memory was 220.6MB in the beginning and 219.1MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-15 16:57:14,335 INFO L158 Benchmark]: Boogie Preprocessor took 35.36ms. Allocated memory is still 284.2MB. Free memory was 219.1MB in the beginning and 217.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-15 16:57:14,335 INFO L158 Benchmark]: RCFGBuilder took 271.40ms. Allocated memory is still 284.2MB. Free memory was 217.0MB in the beginning and 204.4MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2023-12-15 16:57:14,335 INFO L158 Benchmark]: TraceAbstraction took 65609.62ms. Allocated memory was 284.2MB in the beginning and 637.5MB in the end (delta: 353.4MB). Free memory was 203.3MB in the beginning and 485.9MB in the end (delta: -282.6MB). Peak memory consumption was 71.3MB. Max. memory is 8.0GB. [2023-12-15 16:57:14,336 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 191.9MB. Free memory was 140.5MB in the beginning and 140.4MB in the end (delta: 132.8kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 189.09ms. Allocated memory is still 284.2MB. Free memory was 231.6MB in the beginning and 220.6MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 28.59ms. Allocated memory is still 284.2MB. Free memory was 220.6MB in the beginning and 219.1MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 35.36ms. Allocated memory is still 284.2MB. Free memory was 219.1MB in the beginning and 217.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 271.40ms. Allocated memory is still 284.2MB. Free memory was 217.0MB in the beginning and 204.4MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * TraceAbstraction took 65609.62ms. Allocated memory was 284.2MB in the beginning and 637.5MB in the end (delta: 353.4MB). Free memory was 203.3MB in the beginning and 485.9MB in the end (delta: -282.6MB). Peak memory consumption was 71.3MB. 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 - TimeoutResultAtElement [Line: 13]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 13). Cancelled while NwaCegarLoop was constructing difference of abstraction (265states) and FLOYD_HOARE automaton (currently 2 states, 67 states before enhancement),while ReachableStatesComputation was computing reachable states (1 states constructed, input type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 15 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 65.6s, OverallIterations: 14, TraceHistogramMax: 64, PathProgramHistogramMax: 6, EmptinessCheckTime: 0.0s, AutomataDifference: 3.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 83 SdHoareTripleChecker+Valid, 0.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 83 mSDsluCounter, 683 SdHoareTripleChecker+Invalid, 0.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 551 mSDsCounter, 15 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1056 IncrementalHoareTripleChecker+Invalid, 1071 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 15 mSolverCounterUnsat, 132 mSDtfsCounter, 1056 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2074 GetRequests, 1487 SyntacticMatches, 0 SemanticMatches, 587 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8423 ImplicationChecksByTransitivity, 13.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=265occurred in iteration=13, InterpolantAutomatonStates: 445, 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, 13 MinimizatonAttempts, 6 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.4s SsaConstructionTime, 3.8s SatisfiabilityAnalysisTime, 20.4s InterpolantComputationTime, 1988 NumberOfCodeBlocks, 1768 NumberOfCodeBlocksAsserted, 55 NumberOfCheckSat, 2789 ConstructedInterpolants, 0 QuantifiedInterpolants, 11469 SizeOfPredicates, 30 NumberOfNonLiveVariables, 4246 ConjunctsInSsa, 182 ConjunctsInUnsatCore, 36 InterpolantComputations, 3 PerfectInterpolantSequences, 31661/43447 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown