/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/loops/eureka_01-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-15 21:57:18,422 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-15 21:57:18,474 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 21:57:18,477 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-15 21:57:18,477 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-15 21:57:18,493 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-15 21:57:18,494 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-15 21:57:18,495 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-15 21:57:18,495 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-15 21:57:18,498 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-15 21:57:18,498 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-15 21:57:18,499 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-15 21:57:18,499 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-15 21:57:18,500 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-15 21:57:18,500 INFO L153 SettingsManager]: * Use SBE=true [2023-12-15 21:57:18,500 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-15 21:57:18,501 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-15 21:57:18,501 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-15 21:57:18,501 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-15 21:57:18,501 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-15 21:57:18,501 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-15 21:57:18,501 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-15 21:57:18,502 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-15 21:57:18,502 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-15 21:57:18,502 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-15 21:57:18,502 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-15 21:57:18,502 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-15 21:57:18,502 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-15 21:57:18,503 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-15 21:57:18,503 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-15 21:57:18,503 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-15 21:57:18,503 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-15 21:57:18,504 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 21:57:18,504 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-15 21:57:18,504 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-15 21:57:18,504 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-15 21:57:18,504 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-15 21:57:18,504 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-15 21:57:18,504 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-15 21:57:18,504 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-15 21:57:18,505 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-15 21:57:18,506 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-15 21:57:18,506 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-15 21:57:18,506 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-15 21:57:18,719 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-15 21:57:18,739 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-15 21:57:18,742 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-15 21:57:18,742 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-15 21:57:18,743 INFO L274 PluginConnector]: CDTParser initialized [2023-12-15 21:57:18,744 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/eureka_01-2.c [2023-12-15 21:57:19,865 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-15 21:57:20,018 INFO L384 CDTParser]: Found 1 translation units. [2023-12-15 21:57:20,019 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/eureka_01-2.c [2023-12-15 21:57:20,025 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9b7c89727/00337801c03a45d191120fdba37aad9e/FLAGd6c710dba [2023-12-15 21:57:20,038 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9b7c89727/00337801c03a45d191120fdba37aad9e [2023-12-15 21:57:20,040 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-15 21:57:20,041 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-15 21:57:20,043 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-15 21:57:20,043 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-15 21:57:20,047 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-15 21:57:20,047 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 09:57:20" (1/1) ... [2023-12-15 21:57:20,048 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c102912 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:57:20, skipping insertion in model container [2023-12-15 21:57:20,048 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 09:57:20" (1/1) ... [2023-12-15 21:57:20,064 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-15 21:57:20,159 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops/eureka_01-2.c[323,336] [2023-12-15 21:57:20,183 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 21:57:20,190 INFO L202 MainTranslator]: Completed pre-run [2023-12-15 21:57:20,201 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops/eureka_01-2.c[323,336] [2023-12-15 21:57:20,218 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 21:57:20,237 INFO L206 MainTranslator]: Completed translation [2023-12-15 21:57:20,237 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:57:20 WrapperNode [2023-12-15 21:57:20,238 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-15 21:57:20,238 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-15 21:57:20,238 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-15 21:57:20,238 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-15 21:57:20,245 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:57:20" (1/1) ... [2023-12-15 21:57:20,260 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:57:20" (1/1) ... [2023-12-15 21:57:20,293 INFO L138 Inliner]: procedures = 13, calls = 100, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 198 [2023-12-15 21:57:20,294 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-15 21:57:20,294 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-15 21:57:20,294 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-15 21:57:20,294 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-15 21:57:20,302 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:57:20" (1/1) ... [2023-12-15 21:57:20,302 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:57:20" (1/1) ... [2023-12-15 21:57:20,305 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:57:20" (1/1) ... [2023-12-15 21:57:20,314 INFO L175 MemorySlicer]: Split 78 memory accesses to 5 slices as follows [2, 22, 23, 22, 9]. 29 percent of accesses are in the largest equivalence class. The 62 initializations are split as follows [2, 20, 20, 20, 0]. The 3 writes are split as follows [0, 0, 0, 0, 3]. [2023-12-15 21:57:20,315 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:57:20" (1/1) ... [2023-12-15 21:57:20,315 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:57:20" (1/1) ... [2023-12-15 21:57:20,321 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:57:20" (1/1) ... [2023-12-15 21:57:20,323 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:57:20" (1/1) ... [2023-12-15 21:57:20,324 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:57:20" (1/1) ... [2023-12-15 21:57:20,325 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:57:20" (1/1) ... [2023-12-15 21:57:20,327 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-15 21:57:20,327 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-15 21:57:20,327 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-15 21:57:20,327 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-15 21:57:20,328 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:57:20" (1/1) ... [2023-12-15 21:57:20,332 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 21:57:20,345 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:57:20,368 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 21:57:20,370 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 21:57:20,389 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-15 21:57:20,390 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-15 21:57:20,390 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-12-15 21:57:20,390 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-12-15 21:57:20,390 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-12-15 21:57:20,390 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-12-15 21:57:20,390 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-15 21:57:20,390 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-12-15 21:57:20,390 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-12-15 21:57:20,390 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-12-15 21:57:20,390 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-12-15 21:57:20,390 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-12-15 21:57:20,391 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-15 21:57:20,391 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-15 21:57:20,391 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-12-15 21:57:20,391 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-12-15 21:57:20,391 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-12-15 21:57:20,391 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-12-15 21:57:20,391 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2023-12-15 21:57:20,391 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-15 21:57:20,455 INFO L241 CfgBuilder]: Building ICFG [2023-12-15 21:57:20,457 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-15 21:57:20,647 INFO L282 CfgBuilder]: Performing block encoding [2023-12-15 21:57:20,676 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-15 21:57:20,676 INFO L309 CfgBuilder]: Removed 5 assume(true) statements. [2023-12-15 21:57:20,677 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 09:57:20 BoogieIcfgContainer [2023-12-15 21:57:20,677 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-15 21:57:20,678 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-15 21:57:20,678 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-15 21:57:20,681 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-15 21:57:20,681 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 09:57:20" (1/3) ... [2023-12-15 21:57:20,681 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79518e16 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 09:57:20, skipping insertion in model container [2023-12-15 21:57:20,681 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:57:20" (2/3) ... [2023-12-15 21:57:20,682 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79518e16 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 09:57:20, skipping insertion in model container [2023-12-15 21:57:20,682 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 09:57:20" (3/3) ... [2023-12-15 21:57:20,683 INFO L112 eAbstractionObserver]: Analyzing ICFG eureka_01-2.c [2023-12-15 21:57:20,694 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-15 21:57:20,694 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-15 21:57:20,723 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-15 21:57:20,728 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;@7588e32b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-15 21:57:20,728 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-15 21:57:20,730 INFO L276 IsEmpty]: Start isEmpty. Operand has 22 states, 20 states have (on average 1.75) internal successors, (35), 21 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 21:57:20,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-12-15 21:57:20,734 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:57:20,734 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:57:20,735 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:57:20,746 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:57:20,746 INFO L85 PathProgramCache]: Analyzing trace with hash 969093160, now seen corresponding path program 1 times [2023-12-15 21:57:20,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:57:20,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959663305] [2023-12-15 21:57:20,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:57:20,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:57:20,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:57:20,946 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 21:57:20,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:57:20,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959663305] [2023-12-15 21:57:20,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [959663305] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:57:20,947 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:57:20,947 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 21:57:20,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932965016] [2023-12-15 21:57:20,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:57:20,951 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-15 21:57:20,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:57:20,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-15 21:57:20,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-15 21:57:20,974 INFO L87 Difference]: Start difference. First operand has 22 states, 20 states have (on average 1.75) internal successors, (35), 21 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 21:57:21,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:57:21,008 INFO L93 Difference]: Finished difference Result 40 states and 63 transitions. [2023-12-15 21:57:21,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-15 21:57:21,010 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2023-12-15 21:57:21,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:57:21,015 INFO L225 Difference]: With dead ends: 40 [2023-12-15 21:57:21,015 INFO L226 Difference]: Without dead ends: 19 [2023-12-15 21:57:21,017 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-15 21:57:21,020 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 21:57:21,021 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 25 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 21:57:21,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2023-12-15 21:57:21,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2023-12-15 21:57:21,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 18 states have (on average 1.3888888888888888) internal successors, (25), 18 states have internal predecessors, (25), 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 21:57:21,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 25 transitions. [2023-12-15 21:57:21,042 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 25 transitions. Word has length 10 [2023-12-15 21:57:21,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:57:21,042 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 25 transitions. [2023-12-15 21:57:21,042 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 21:57:21,043 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 25 transitions. [2023-12-15 21:57:21,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-12-15 21:57:21,043 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:57:21,043 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:57:21,044 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-15 21:57:21,045 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:57:21,045 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:57:21,046 INFO L85 PathProgramCache]: Analyzing trace with hash 428348859, now seen corresponding path program 1 times [2023-12-15 21:57:21,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:57:21,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [855172240] [2023-12-15 21:57:21,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:57:21,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:57:21,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:57:21,210 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 21:57:21,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:57:21,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [855172240] [2023-12-15 21:57:21,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [855172240] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:57:21,211 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:57:21,211 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 21:57:21,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593350845] [2023-12-15 21:57:21,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:57:21,212 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 21:57:21,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:57:21,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 21:57:21,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 21:57:21,213 INFO L87 Difference]: Start difference. First operand 19 states and 25 transitions. Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 21:57:21,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:57:21,256 INFO L93 Difference]: Finished difference Result 37 states and 49 transitions. [2023-12-15 21:57:21,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 21:57:21,256 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2023-12-15 21:57:21,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:57:21,257 INFO L225 Difference]: With dead ends: 37 [2023-12-15 21:57:21,257 INFO L226 Difference]: Without dead ends: 22 [2023-12-15 21:57:21,257 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 21:57:21,258 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 3 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 21:57:21,258 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 26 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 21:57:21,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2023-12-15 21:57:21,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 20. [2023-12-15 21:57:21,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 1.368421052631579) internal successors, (26), 19 states have internal predecessors, (26), 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 21:57:21,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 26 transitions. [2023-12-15 21:57:21,262 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 26 transitions. Word has length 10 [2023-12-15 21:57:21,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:57:21,262 INFO L495 AbstractCegarLoop]: Abstraction has 20 states and 26 transitions. [2023-12-15 21:57:21,263 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 21:57:21,263 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 26 transitions. [2023-12-15 21:57:21,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-12-15 21:57:21,263 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:57:21,263 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:57:21,263 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-15 21:57:21,263 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:57:21,264 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:57:21,264 INFO L85 PathProgramCache]: Analyzing trace with hash 980259699, now seen corresponding path program 1 times [2023-12-15 21:57:21,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:57:21,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41074158] [2023-12-15 21:57:21,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:57:21,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:57:21,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:57:21,358 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 21:57:21,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:57:21,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [41074158] [2023-12-15 21:57:21,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [41074158] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:57:21,359 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:57:21,359 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 21:57:21,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223200175] [2023-12-15 21:57:21,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:57:21,359 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 21:57:21,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:57:21,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 21:57:21,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-15 21:57:21,360 INFO L87 Difference]: Start difference. First operand 20 states and 26 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 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 21:57:21,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:57:21,402 INFO L93 Difference]: Finished difference Result 44 states and 56 transitions. [2023-12-15 21:57:21,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 21:57:21,406 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 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 13 [2023-12-15 21:57:21,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:57:21,407 INFO L225 Difference]: With dead ends: 44 [2023-12-15 21:57:21,407 INFO L226 Difference]: Without dead ends: 35 [2023-12-15 21:57:21,407 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-15 21:57:21,411 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 35 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 21:57:21,412 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 19 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 21:57:21,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2023-12-15 21:57:21,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 21. [2023-12-15 21:57:21,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 20 states have (on average 1.35) internal successors, (27), 20 states have internal predecessors, (27), 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 21:57:21,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 27 transitions. [2023-12-15 21:57:21,419 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 27 transitions. Word has length 13 [2023-12-15 21:57:21,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:57:21,419 INFO L495 AbstractCegarLoop]: Abstraction has 21 states and 27 transitions. [2023-12-15 21:57:21,419 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 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 21:57:21,419 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 27 transitions. [2023-12-15 21:57:21,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-12-15 21:57:21,419 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:57:21,419 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:57:21,419 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-15 21:57:21,420 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:57:21,420 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:57:21,420 INFO L85 PathProgramCache]: Analyzing trace with hash 263824409, now seen corresponding path program 1 times [2023-12-15 21:57:21,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:57:21,420 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [361324663] [2023-12-15 21:57:21,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:57:21,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:57:21,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:57:21,500 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 21:57:21,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:57:21,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [361324663] [2023-12-15 21:57:21,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [361324663] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:57:21,500 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:57:21,500 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 21:57:21,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580151759] [2023-12-15 21:57:21,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:57:21,501 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 21:57:21,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:57:21,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 21:57:21,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-15 21:57:21,502 INFO L87 Difference]: Start difference. First operand 21 states and 27 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 3 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 21:57:21,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:57:21,531 INFO L93 Difference]: Finished difference Result 38 states and 50 transitions. [2023-12-15 21:57:21,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 21:57:21,532 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 3 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) Word has length 16 [2023-12-15 21:57:21,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:57:21,532 INFO L225 Difference]: With dead ends: 38 [2023-12-15 21:57:21,532 INFO L226 Difference]: Without dead ends: 24 [2023-12-15 21:57:21,533 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-15 21:57:21,534 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 25 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 21:57:21,534 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 31 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 21:57:21,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2023-12-15 21:57:21,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 22. [2023-12-15 21:57:21,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.3333333333333333) internal successors, (28), 21 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 21:57:21,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 28 transitions. [2023-12-15 21:57:21,537 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 28 transitions. Word has length 16 [2023-12-15 21:57:21,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:57:21,537 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 28 transitions. [2023-12-15 21:57:21,537 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 3 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 21:57:21,537 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 28 transitions. [2023-12-15 21:57:21,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-12-15 21:57:21,537 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:57:21,538 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:57:21,538 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-15 21:57:21,538 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:57:21,538 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:57:21,538 INFO L85 PathProgramCache]: Analyzing trace with hash 1728732986, now seen corresponding path program 1 times [2023-12-15 21:57:21,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:57:21,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231415856] [2023-12-15 21:57:21,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:57:21,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:57:21,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:57:21,620 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-12-15 21:57:21,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:57:21,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231415856] [2023-12-15 21:57:21,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [231415856] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:57:21,621 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:57:21,621 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 21:57:21,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827968144] [2023-12-15 21:57:21,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:57:21,622 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 21:57:21,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:57:21,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 21:57:21,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-15 21:57:21,624 INFO L87 Difference]: Start difference. First operand 22 states and 28 transitions. Second operand has 4 states, 4 states have (on average 4.75) internal successors, (19), 3 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 21:57:21,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:57:21,672 INFO L93 Difference]: Finished difference Result 42 states and 52 transitions. [2023-12-15 21:57:21,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 21:57:21,672 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 3 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) Word has length 19 [2023-12-15 21:57:21,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:57:21,673 INFO L225 Difference]: With dead ends: 42 [2023-12-15 21:57:21,673 INFO L226 Difference]: Without dead ends: 36 [2023-12-15 21:57:21,674 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-15 21:57:21,677 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 34 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 21:57:21,677 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 17 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 21:57:21,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2023-12-15 21:57:21,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 23. [2023-12-15 21:57:21,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.3181818181818181) internal successors, (29), 22 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 21:57:21,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 29 transitions. [2023-12-15 21:57:21,681 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 29 transitions. Word has length 19 [2023-12-15 21:57:21,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:57:21,682 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 29 transitions. [2023-12-15 21:57:21,682 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 3 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 21:57:21,682 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 29 transitions. [2023-12-15 21:57:21,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-12-15 21:57:21,682 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:57:21,682 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:57:21,682 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-15 21:57:21,682 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:57:21,683 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:57:21,683 INFO L85 PathProgramCache]: Analyzing trace with hash 1802843216, now seen corresponding path program 1 times [2023-12-15 21:57:21,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:57:21,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1417894976] [2023-12-15 21:57:21,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:57:21,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:57:21,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:57:21,780 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-12-15 21:57:21,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:57:21,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1417894976] [2023-12-15 21:57:21,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1417894976] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 21:57:21,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1200348] [2023-12-15 21:57:21,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:57:21,782 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:57:21,782 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:57:21,785 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 21:57:21,856 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 21:57:21,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:57:21,910 INFO L262 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-15 21:57:21,916 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:57:21,970 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-12-15 21:57:21,970 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 21:57:21,993 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-12-15 21:57:21,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1200348] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 21:57:21,994 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-15 21:57:21,994 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 7 [2023-12-15 21:57:21,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913153356] [2023-12-15 21:57:21,994 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-15 21:57:21,995 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-15 21:57:21,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:57:21,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-15 21:57:21,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2023-12-15 21:57:21,996 INFO L87 Difference]: Start difference. First operand 23 states and 29 transitions. Second operand has 8 states, 8 states have (on average 3.875) internal successors, (31), 7 states have internal predecessors, (31), 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 21:57:22,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:57:22,050 INFO L93 Difference]: Finished difference Result 50 states and 66 transitions. [2023-12-15 21:57:22,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-15 21:57:22,050 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.875) internal successors, (31), 7 states have internal predecessors, (31), 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 21 [2023-12-15 21:57:22,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:57:22,051 INFO L225 Difference]: With dead ends: 50 [2023-12-15 21:57:22,051 INFO L226 Difference]: Without dead ends: 32 [2023-12-15 21:57:22,051 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2023-12-15 21:57:22,053 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 17 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 21:57:22,054 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 33 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 21:57:22,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2023-12-15 21:57:22,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2023-12-15 21:57:22,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 31 states have (on average 1.3225806451612903) internal successors, (41), 31 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 21:57:22,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 41 transitions. [2023-12-15 21:57:22,061 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 41 transitions. Word has length 21 [2023-12-15 21:57:22,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:57:22,061 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 41 transitions. [2023-12-15 21:57:22,061 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.875) internal successors, (31), 7 states have internal predecessors, (31), 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 21:57:22,061 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 41 transitions. [2023-12-15 21:57:22,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-12-15 21:57:22,062 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:57:22,062 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:57:22,074 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 21:57:22,274 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-12-15 21:57:22,275 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:57:22,275 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:57:22,275 INFO L85 PathProgramCache]: Analyzing trace with hash 228079768, now seen corresponding path program 2 times [2023-12-15 21:57:22,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:57:22,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499212427] [2023-12-15 21:57:22,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:57:22,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:57:22,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:57:22,354 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 13 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-15 21:57:22,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:57:22,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [499212427] [2023-12-15 21:57:22,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [499212427] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 21:57:22,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [852242072] [2023-12-15 21:57:22,357 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-15 21:57:22,357 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:57:22,357 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:57:22,358 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 21:57:22,367 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 21:57:22,446 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-15 21:57:22,447 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-15 21:57:22,447 INFO L262 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-15 21:57:22,449 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:57:22,473 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-15 21:57:22,473 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:57:22,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [852242072] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:57:22,473 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 21:57:22,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-12-15 21:57:22,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432541018] [2023-12-15 21:57:22,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:57:22,474 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 21:57:22,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:57:22,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 21:57:22,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-15 21:57:22,474 INFO L87 Difference]: Start difference. First operand 32 states and 41 transitions. Second operand has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 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 21:57:22,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:57:22,505 INFO L93 Difference]: Finished difference Result 69 states and 87 transitions. [2023-12-15 21:57:22,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 21:57:22,505 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 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 30 [2023-12-15 21:57:22,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:57:22,506 INFO L225 Difference]: With dead ends: 69 [2023-12-15 21:57:22,506 INFO L226 Difference]: Without dead ends: 43 [2023-12-15 21:57:22,506 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-15 21:57:22,506 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 30 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 21:57:22,507 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 27 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 21:57:22,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2023-12-15 21:57:22,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 32. [2023-12-15 21:57:22,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 31 states have (on average 1.2258064516129032) internal successors, (38), 31 states have internal predecessors, (38), 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 21:57:22,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 38 transitions. [2023-12-15 21:57:22,510 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 38 transitions. Word has length 30 [2023-12-15 21:57:22,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:57:22,510 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 38 transitions. [2023-12-15 21:57:22,510 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 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 21:57:22,510 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 38 transitions. [2023-12-15 21:57:22,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-12-15 21:57:22,511 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:57:22,511 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:57:22,518 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-15 21:57:22,718 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,SelfDestructingSolverStorable6 [2023-12-15 21:57:22,718 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:57:22,718 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:57:22,718 INFO L85 PathProgramCache]: Analyzing trace with hash -1101460646, now seen corresponding path program 1 times [2023-12-15 21:57:22,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:57:22,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1229963003] [2023-12-15 21:57:22,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:57:22,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:57:22,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:57:22,806 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-12-15 21:57:22,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:57:22,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1229963003] [2023-12-15 21:57:22,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1229963003] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 21:57:22,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [6888546] [2023-12-15 21:57:22,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:57:22,807 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:57:22,807 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:57:22,829 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 21:57:22,848 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 21:57:22,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:57:22,927 INFO L262 TraceCheckSpWp]: Trace formula consists of 283 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-15 21:57:22,929 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:57:23,020 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-12-15 21:57:23,020 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 21:57:23,102 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-12-15 21:57:23,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [6888546] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 21:57:23,103 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-15 21:57:23,103 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 16 [2023-12-15 21:57:23,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672808059] [2023-12-15 21:57:23,103 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-15 21:57:23,103 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-12-15 21:57:23,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:57:23,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-12-15 21:57:23,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=166, Unknown=0, NotChecked=0, Total=272 [2023-12-15 21:57:23,104 INFO L87 Difference]: Start difference. First operand 32 states and 38 transitions. Second operand has 17 states, 17 states have (on average 3.411764705882353) internal successors, (58), 16 states have internal predecessors, (58), 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 21:57:23,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:57:23,171 INFO L93 Difference]: Finished difference Result 55 states and 66 transitions. [2023-12-15 21:57:23,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-15 21:57:23,171 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.411764705882353) internal successors, (58), 16 states have internal predecessors, (58), 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 30 [2023-12-15 21:57:23,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:57:23,172 INFO L225 Difference]: With dead ends: 55 [2023-12-15 21:57:23,172 INFO L226 Difference]: Without dead ends: 37 [2023-12-15 21:57:23,172 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=106, Invalid=166, Unknown=0, NotChecked=0, Total=272 [2023-12-15 21:57:23,173 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 12 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 21:57:23,173 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 65 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 21:57:23,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2023-12-15 21:57:23,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 35. [2023-12-15 21:57:23,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 34 states have (on average 1.2058823529411764) internal successors, (41), 34 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 21:57:23,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 41 transitions. [2023-12-15 21:57:23,177 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 41 transitions. Word has length 30 [2023-12-15 21:57:23,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:57:23,177 INFO L495 AbstractCegarLoop]: Abstraction has 35 states and 41 transitions. [2023-12-15 21:57:23,177 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.411764705882353) internal successors, (58), 16 states have internal predecessors, (58), 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 21:57:23,177 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 41 transitions. [2023-12-15 21:57:23,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-12-15 21:57:23,178 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:57:23,178 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:57:23,196 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 21:57:23,382 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:57:23,383 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:57:23,383 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:57:23,383 INFO L85 PathProgramCache]: Analyzing trace with hash 439389136, now seen corresponding path program 2 times [2023-12-15 21:57:23,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:57:23,383 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661987639] [2023-12-15 21:57:23,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:57:23,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:57:23,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:57:23,441 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-12-15 21:57:23,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:57:23,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [661987639] [2023-12-15 21:57:23,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [661987639] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 21:57:23,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1266369207] [2023-12-15 21:57:23,442 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-15 21:57:23,442 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:57:23,442 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:57:23,443 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 21:57:23,480 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 21:57:23,540 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-15 21:57:23,540 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-15 21:57:23,541 INFO L262 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-15 21:57:23,542 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:57:23,584 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-12-15 21:57:23,584 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 21:57:23,616 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-12-15 21:57:23,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1266369207] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 21:57:23,617 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-15 21:57:23,617 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2023-12-15 21:57:23,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814006020] [2023-12-15 21:57:23,617 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-15 21:57:23,617 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-15 21:57:23,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:57:23,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-15 21:57:23,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2023-12-15 21:57:23,618 INFO L87 Difference]: Start difference. First operand 35 states and 41 transitions. Second operand has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 states have internal predecessors, (39), 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 21:57:23,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:57:23,664 INFO L93 Difference]: Finished difference Result 60 states and 76 transitions. [2023-12-15 21:57:23,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-15 21:57:23,665 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 states have internal predecessors, (39), 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 33 [2023-12-15 21:57:23,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:57:23,665 INFO L225 Difference]: With dead ends: 60 [2023-12-15 21:57:23,665 INFO L226 Difference]: Without dead ends: 44 [2023-12-15 21:57:23,666 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2023-12-15 21:57:23,666 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 61 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 21:57:23,666 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 62 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 21:57:23,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2023-12-15 21:57:23,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2023-12-15 21:57:23,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 43 states have (on average 1.2325581395348837) internal successors, (53), 43 states have internal predecessors, (53), 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 21:57:23,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 53 transitions. [2023-12-15 21:57:23,670 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 53 transitions. Word has length 33 [2023-12-15 21:57:23,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:57:23,670 INFO L495 AbstractCegarLoop]: Abstraction has 44 states and 53 transitions. [2023-12-15 21:57:23,670 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 states have internal predecessors, (39), 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 21:57:23,671 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 53 transitions. [2023-12-15 21:57:23,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-12-15 21:57:23,671 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:57:23,671 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:57:23,678 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-12-15 21:57:23,875 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:57:23,876 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:57:23,876 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:57:23,876 INFO L85 PathProgramCache]: Analyzing trace with hash 538648239, now seen corresponding path program 3 times [2023-12-15 21:57:23,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:57:23,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525642727] [2023-12-15 21:57:23,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:57:23,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:57:23,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:57:23,969 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 1 proven. 22 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-12-15 21:57:23,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:57:23,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525642727] [2023-12-15 21:57:23,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [525642727] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 21:57:23,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2080705171] [2023-12-15 21:57:23,970 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-15 21:57:23,970 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:57:23,970 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:57:23,971 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 21:57:24,020 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 21:57:24,075 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-12-15 21:57:24,075 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-15 21:57:24,076 INFO L262 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-15 21:57:24,077 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:57:24,148 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2023-12-15 21:57:24,149 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 21:57:24,197 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2023-12-15 21:57:24,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2080705171] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 21:57:24,198 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-15 21:57:24,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 4, 4] total 13 [2023-12-15 21:57:24,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511253319] [2023-12-15 21:57:24,198 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-15 21:57:24,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-15 21:57:24,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:57:24,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-15 21:57:24,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2023-12-15 21:57:24,199 INFO L87 Difference]: Start difference. First operand 44 states and 53 transitions. Second operand has 14 states, 14 states have (on average 4.214285714285714) internal successors, (59), 13 states have internal predecessors, (59), 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 21:57:24,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:57:24,565 INFO L93 Difference]: Finished difference Result 159 states and 208 transitions. [2023-12-15 21:57:24,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-12-15 21:57:24,565 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.214285714285714) internal successors, (59), 13 states have internal predecessors, (59), 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 42 [2023-12-15 21:57:24,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:57:24,566 INFO L225 Difference]: With dead ends: 159 [2023-12-15 21:57:24,566 INFO L226 Difference]: Without dead ends: 134 [2023-12-15 21:57:24,567 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 324 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=502, Invalid=980, Unknown=0, NotChecked=0, Total=1482 [2023-12-15 21:57:24,567 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 539 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 539 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 21:57:24,567 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [539 Valid, 48 Invalid, 168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 21:57:24,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2023-12-15 21:57:24,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 103. [2023-12-15 21:57:24,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 102 states have (on average 1.2843137254901962) internal successors, (131), 102 states have internal predecessors, (131), 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 21:57:24,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 131 transitions. [2023-12-15 21:57:24,577 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 131 transitions. Word has length 42 [2023-12-15 21:57:24,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:57:24,577 INFO L495 AbstractCegarLoop]: Abstraction has 103 states and 131 transitions. [2023-12-15 21:57:24,577 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.214285714285714) internal successors, (59), 13 states have internal predecessors, (59), 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 21:57:24,577 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 131 transitions. [2023-12-15 21:57:24,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-12-15 21:57:24,578 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:57:24,578 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 5, 5, 4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:57:24,589 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-12-15 21:57:24,783 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-12-15 21:57:24,783 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:57:24,783 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:57:24,783 INFO L85 PathProgramCache]: Analyzing trace with hash -1078809925, now seen corresponding path program 4 times [2023-12-15 21:57:24,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:57:24,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [827309995] [2023-12-15 21:57:24,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:57:24,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:57:24,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:57:24,972 INFO L134 CoverageAnalysis]: Checked inductivity of 711 backedges. 262 proven. 35 refuted. 0 times theorem prover too weak. 414 trivial. 0 not checked. [2023-12-15 21:57:24,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:57:24,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [827309995] [2023-12-15 21:57:24,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [827309995] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 21:57:24,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1835296810] [2023-12-15 21:57:24,972 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-15 21:57:24,972 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:57:24,972 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:57:24,973 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 21:57:24,988 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 21:57:25,113 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-15 21:57:25,114 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-15 21:57:25,116 INFO L262 TraceCheckSpWp]: Trace formula consists of 474 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-15 21:57:25,119 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:57:25,241 INFO L134 CoverageAnalysis]: Checked inductivity of 711 backedges. 26 proven. 227 refuted. 0 times theorem prover too weak. 458 trivial. 0 not checked. [2023-12-15 21:57:25,241 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 21:57:25,332 INFO L134 CoverageAnalysis]: Checked inductivity of 711 backedges. 26 proven. 227 refuted. 0 times theorem prover too weak. 458 trivial. 0 not checked. [2023-12-15 21:57:25,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1835296810] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 21:57:25,332 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-15 21:57:25,332 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 11, 11] total 24 [2023-12-15 21:57:25,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178322715] [2023-12-15 21:57:25,332 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-15 21:57:25,333 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-12-15 21:57:25,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:57:25,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-12-15 21:57:25,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=441, Unknown=0, NotChecked=0, Total=552 [2023-12-15 21:57:25,334 INFO L87 Difference]: Start difference. First operand 103 states and 131 transitions. Second operand has 24 states, 24 states have (on average 3.9166666666666665) internal successors, (94), 24 states have internal predecessors, (94), 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 21:57:25,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:57:25,918 INFO L93 Difference]: Finished difference Result 305 states and 399 transitions. [2023-12-15 21:57:25,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2023-12-15 21:57:25,918 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 3.9166666666666665) internal successors, (94), 24 states have internal predecessors, (94), 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 101 [2023-12-15 21:57:25,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:57:25,919 INFO L225 Difference]: With dead ends: 305 [2023-12-15 21:57:25,919 INFO L226 Difference]: Without dead ends: 237 [2023-12-15 21:57:25,921 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 262 GetRequests, 183 SyntacticMatches, 3 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1716 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=1347, Invalid=4659, Unknown=0, NotChecked=0, Total=6006 [2023-12-15 21:57:25,922 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 1297 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 292 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1297 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 331 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 292 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-15 21:57:25,922 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1297 Valid, 93 Invalid, 331 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 292 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-15 21:57:25,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2023-12-15 21:57:25,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 123. [2023-12-15 21:57:25,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 122 states have (on average 1.2704918032786885) internal successors, (155), 122 states have internal predecessors, (155), 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 21:57:25,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 155 transitions. [2023-12-15 21:57:25,952 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 155 transitions. Word has length 101 [2023-12-15 21:57:25,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:57:25,953 INFO L495 AbstractCegarLoop]: Abstraction has 123 states and 155 transitions. [2023-12-15 21:57:25,954 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 3.9166666666666665) internal successors, (94), 24 states have internal predecessors, (94), 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 21:57:25,954 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 155 transitions. [2023-12-15 21:57:25,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2023-12-15 21:57:25,957 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:57:25,957 INFO L195 NwaCegarLoop]: trace histogram [24, 24, 24, 6, 6, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:57:25,974 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 21:57:26,163 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:57:26,163 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:57:26,164 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:57:26,164 INFO L85 PathProgramCache]: Analyzing trace with hash -1691455241, now seen corresponding path program 5 times [2023-12-15 21:57:26,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:57:26,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [907108857] [2023-12-15 21:57:26,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:57:26,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:57:26,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:57:26,444 INFO L134 CoverageAnalysis]: Checked inductivity of 1017 backedges. 367 proven. 51 refuted. 0 times theorem prover too weak. 599 trivial. 0 not checked. [2023-12-15 21:57:26,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:57:26,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [907108857] [2023-12-15 21:57:26,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [907108857] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 21:57:26,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [506244379] [2023-12-15 21:57:26,445 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-15 21:57:26,445 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:57:26,445 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:57:26,446 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 21:57:26,480 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 21:57:39,193 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 28 check-sat command(s) [2023-12-15 21:57:39,193 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-15 21:57:39,233 INFO L262 TraceCheckSpWp]: Trace formula consists of 793 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-15 21:57:39,236 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:57:39,336 INFO L134 CoverageAnalysis]: Checked inductivity of 1017 backedges. 614 proven. 51 refuted. 0 times theorem prover too weak. 352 trivial. 0 not checked. [2023-12-15 21:57:39,336 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 21:57:39,460 INFO L134 CoverageAnalysis]: Checked inductivity of 1017 backedges. 493 proven. 172 refuted. 0 times theorem prover too weak. 352 trivial. 0 not checked. [2023-12-15 21:57:39,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [506244379] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 21:57:39,461 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-15 21:57:39,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2023-12-15 21:57:39,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175667596] [2023-12-15 21:57:39,461 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-15 21:57:39,462 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-12-15 21:57:39,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:57:39,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-12-15 21:57:39,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=259, Invalid=341, Unknown=0, NotChecked=0, Total=600 [2023-12-15 21:57:39,463 INFO L87 Difference]: Start difference. First operand 123 states and 155 transitions. Second operand has 25 states, 25 states have (on average 4.04) internal successors, (101), 24 states have internal predecessors, (101), 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 21:57:39,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:57:39,607 INFO L93 Difference]: Finished difference Result 304 states and 423 transitions. [2023-12-15 21:57:39,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-15 21:57:39,608 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 4.04) internal successors, (101), 24 states have internal predecessors, (101), 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 121 [2023-12-15 21:57:39,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:57:39,608 INFO L225 Difference]: With dead ends: 304 [2023-12-15 21:57:39,609 INFO L226 Difference]: Without dead ends: 219 [2023-12-15 21:57:39,611 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 226 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 305 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=392, Invalid=600, Unknown=0, NotChecked=0, Total=992 [2023-12-15 21:57:39,611 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 85 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 21:57:39,612 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 74 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 21:57:39,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2023-12-15 21:57:39,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 219. [2023-12-15 21:57:39,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219 states, 218 states have (on average 1.298165137614679) internal successors, (283), 218 states have internal predecessors, (283), 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 21:57:39,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 283 transitions. [2023-12-15 21:57:39,646 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 283 transitions. Word has length 121 [2023-12-15 21:57:39,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:57:39,646 INFO L495 AbstractCegarLoop]: Abstraction has 219 states and 283 transitions. [2023-12-15 21:57:39,646 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 4.04) internal successors, (101), 24 states have internal predecessors, (101), 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 21:57:39,646 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 283 transitions. [2023-12-15 21:57:39,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2023-12-15 21:57:39,647 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:57:39,647 INFO L195 NwaCegarLoop]: trace histogram [56, 56, 56, 6, 6, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:57:39,672 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 21:57:39,872 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:57:39,872 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:57:39,873 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:57:39,873 INFO L85 PathProgramCache]: Analyzing trace with hash 855553271, now seen corresponding path program 6 times [2023-12-15 21:57:39,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:57:39,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [331024043] [2023-12-15 21:57:39,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:57:39,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:57:39,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:57:40,538 INFO L134 CoverageAnalysis]: Checked inductivity of 4937 backedges. 1855 proven. 287 refuted. 0 times theorem prover too weak. 2795 trivial. 0 not checked. [2023-12-15 21:57:40,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:57:40,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [331024043] [2023-12-15 21:57:40,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [331024043] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 21:57:40,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1959142933] [2023-12-15 21:57:40,538 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-15 21:57:40,538 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:57:40,538 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:57:40,553 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 21:57:40,555 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 21:57:41,761 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2023-12-15 21:57:41,761 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-15 21:57:41,765 INFO L262 TraceCheckSpWp]: Trace formula consists of 541 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-15 21:57:41,769 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:57:42,046 INFO L134 CoverageAnalysis]: Checked inductivity of 4937 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 4901 trivial. 0 not checked. [2023-12-15 21:57:42,046 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 21:57:42,339 INFO L134 CoverageAnalysis]: Checked inductivity of 4937 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 4901 trivial. 0 not checked. [2023-12-15 21:57:42,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1959142933] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 21:57:42,339 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-15 21:57:42,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 9, 9] total 32 [2023-12-15 21:57:42,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425152842] [2023-12-15 21:57:42,339 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-15 21:57:42,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-12-15 21:57:42,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:57:42,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-12-15 21:57:42,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=780, Unknown=0, NotChecked=0, Total=1056 [2023-12-15 21:57:42,341 INFO L87 Difference]: Start difference. First operand 219 states and 283 transitions. Second operand has 33 states, 33 states have (on average 3.484848484848485) internal successors, (115), 32 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 21:57:49,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:57:49,719 INFO L93 Difference]: Finished difference Result 1079 states and 1427 transitions. [2023-12-15 21:57:49,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 242 states. [2023-12-15 21:57:49,720 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.484848484848485) internal successors, (115), 32 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) Word has length 217 [2023-12-15 21:57:49,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:57:49,723 INFO L225 Difference]: With dead ends: 1079 [2023-12-15 21:57:49,723 INFO L226 Difference]: Without dead ends: 922 [2023-12-15 21:57:49,732 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 680 GetRequests, 418 SyntacticMatches, 0 SemanticMatches, 262 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26616 ImplicationChecksByTransitivity, 7.0s TimeCoverageRelationStatistics Valid=19974, Invalid=49458, Unknown=0, NotChecked=0, Total=69432 [2023-12-15 21:57:49,733 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 3195 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 297 mSolverCounterSat, 119 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3195 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 416 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 119 IncrementalHoareTripleChecker+Valid, 297 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-15 21:57:49,733 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3195 Valid, 90 Invalid, 416 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [119 Valid, 297 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-15 21:57:49,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 922 states. [2023-12-15 21:57:49,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 922 to 247. [2023-12-15 21:57:49,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 247 states, 246 states have (on average 1.2804878048780488) internal successors, (315), 246 states have internal predecessors, (315), 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 21:57:49,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 315 transitions. [2023-12-15 21:57:49,763 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 315 transitions. Word has length 217 [2023-12-15 21:57:49,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:57:49,763 INFO L495 AbstractCegarLoop]: Abstraction has 247 states and 315 transitions. [2023-12-15 21:57:49,763 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.484848484848485) internal successors, (115), 32 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 21:57:49,763 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 315 transitions. [2023-12-15 21:57:49,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2023-12-15 21:57:49,765 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:57:49,765 INFO L195 NwaCegarLoop]: trace histogram [60, 60, 60, 14, 14, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:57:49,772 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 21:57:49,971 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,SelfDestructingSolverStorable12 [2023-12-15 21:57:49,972 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:57:49,972 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:57:49,972 INFO L85 PathProgramCache]: Analyzing trace with hash 1628110019, now seen corresponding path program 7 times [2023-12-15 21:57:49,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:57:49,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [306798404] [2023-12-15 21:57:49,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:57:49,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:57:50,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:57:50,703 INFO L134 CoverageAnalysis]: Checked inductivity of 5803 backedges. 2122 proven. 330 refuted. 0 times theorem prover too weak. 3351 trivial. 0 not checked. [2023-12-15 21:57:50,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:57:50,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [306798404] [2023-12-15 21:57:50,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [306798404] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 21:57:50,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1197015487] [2023-12-15 21:57:50,704 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-15 21:57:50,704 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:57:50,704 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:57:50,718 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 21:57:50,744 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 21:57:51,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:57:51,092 INFO L262 TraceCheckSpWp]: Trace formula consists of 1553 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-15 21:57:51,096 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:57:51,381 INFO L134 CoverageAnalysis]: Checked inductivity of 5803 backedges. 2122 proven. 330 refuted. 0 times theorem prover too weak. 3351 trivial. 0 not checked. [2023-12-15 21:57:51,381 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 21:57:51,619 INFO L134 CoverageAnalysis]: Checked inductivity of 5803 backedges. 2122 proven. 330 refuted. 0 times theorem prover too weak. 3351 trivial. 0 not checked. [2023-12-15 21:57:51,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1197015487] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 21:57:51,620 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-15 21:57:51,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 39 [2023-12-15 21:57:51,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312605034] [2023-12-15 21:57:51,620 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-15 21:57:51,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2023-12-15 21:57:51,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:57:51,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2023-12-15 21:57:51,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=637, Invalid=923, Unknown=0, NotChecked=0, Total=1560 [2023-12-15 21:57:51,622 INFO L87 Difference]: Start difference. First operand 247 states and 315 transitions. Second operand has 40 states, 40 states have (on average 3.425) internal successors, (137), 39 states have internal predecessors, (137), 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 21:57:51,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:57:51,782 INFO L93 Difference]: Finished difference Result 489 states and 647 transitions. [2023-12-15 21:57:51,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-12-15 21:57:51,783 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 3.425) internal successors, (137), 39 states have internal predecessors, (137), 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 245 [2023-12-15 21:57:51,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:57:51,784 INFO L225 Difference]: With dead ends: 489 [2023-12-15 21:57:51,784 INFO L226 Difference]: Without dead ends: 307 [2023-12-15 21:57:51,784 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 510 GetRequests, 456 SyntacticMatches, 12 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1181 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=737, Invalid=1155, Unknown=0, NotChecked=0, Total=1892 [2023-12-15 21:57:51,785 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 101 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 86 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 21:57:51,785 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 86 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 21:57:51,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2023-12-15 21:57:51,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 307. [2023-12-15 21:57:51,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 307 states, 306 states have (on average 1.2908496732026145) internal successors, (395), 306 states have internal predecessors, (395), 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 21:57:51,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 395 transitions. [2023-12-15 21:57:51,805 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 395 transitions. Word has length 245 [2023-12-15 21:57:51,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:57:51,805 INFO L495 AbstractCegarLoop]: Abstraction has 307 states and 395 transitions. [2023-12-15 21:57:51,805 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 3.425) internal successors, (137), 39 states have internal predecessors, (137), 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 21:57:51,805 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 395 transitions. [2023-12-15 21:57:51,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2023-12-15 21:57:51,807 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:57:51,807 INFO L195 NwaCegarLoop]: trace histogram [80, 80, 80, 14, 14, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:57:51,816 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 21:57:52,016 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,SelfDestructingSolverStorable13 [2023-12-15 21:57:52,016 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:57:52,016 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:57:52,016 INFO L85 PathProgramCache]: Analyzing trace with hash -1561023321, now seen corresponding path program 8 times [2023-12-15 21:57:52,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:57:52,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [271634038] [2023-12-15 21:57:52,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:57:52,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:57:52,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:57:52,554 INFO L134 CoverageAnalysis]: Checked inductivity of 10053 backedges. 0 proven. 7462 refuted. 0 times theorem prover too weak. 2591 trivial. 0 not checked. [2023-12-15 21:57:52,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:57:52,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [271634038] [2023-12-15 21:57:52,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [271634038] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 21:57:52,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [245901334] [2023-12-15 21:57:52,555 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-15 21:57:52,555 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:57:52,555 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:57:52,556 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 21:57:52,584 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 21:57:52,956 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-15 21:57:52,956 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-15 21:57:52,963 INFO L262 TraceCheckSpWp]: Trace formula consists of 1913 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-15 21:57:52,967 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:57:53,557 INFO L134 CoverageAnalysis]: Checked inductivity of 10053 backedges. 0 proven. 7462 refuted. 0 times theorem prover too weak. 2591 trivial. 0 not checked. [2023-12-15 21:57:53,557 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 21:57:53,904 INFO L134 CoverageAnalysis]: Checked inductivity of 10053 backedges. 0 proven. 7462 refuted. 0 times theorem prover too weak. 2591 trivial. 0 not checked. [2023-12-15 21:57:53,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [245901334] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 21:57:53,905 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-15 21:57:53,905 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 18 [2023-12-15 21:57:53,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941365518] [2023-12-15 21:57:53,905 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-15 21:57:53,905 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-12-15 21:57:53,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:57:53,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-12-15 21:57:53,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=216, Unknown=0, NotChecked=0, Total=342 [2023-12-15 21:57:53,906 INFO L87 Difference]: Start difference. First operand 307 states and 395 transitions. Second operand has 19 states, 19 states have (on average 5.157894736842105) internal successors, (98), 18 states have internal predecessors, (98), 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 21:57:54,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:57:54,028 INFO L93 Difference]: Finished difference Result 427 states and 538 transitions. [2023-12-15 21:57:54,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-15 21:57:54,029 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.157894736842105) internal successors, (98), 18 states have internal predecessors, (98), 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 305 [2023-12-15 21:57:54,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:57:54,030 INFO L225 Difference]: With dead ends: 427 [2023-12-15 21:57:54,030 INFO L226 Difference]: Without dead ends: 391 [2023-12-15 21:57:54,030 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 616 GetRequests, 598 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 142 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=126, Invalid=216, Unknown=0, NotChecked=0, Total=342 [2023-12-15 21:57:54,031 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 187 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 187 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 21:57:54,031 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [187 Valid, 84 Invalid, 179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 21:57:54,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 391 states. [2023-12-15 21:57:54,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 391 to 370. [2023-12-15 21:57:54,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 370 states, 369 states have (on average 1.2981029810298104) internal successors, (479), 369 states have internal predecessors, (479), 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 21:57:54,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 370 states to 370 states and 479 transitions. [2023-12-15 21:57:54,058 INFO L78 Accepts]: Start accepts. Automaton has 370 states and 479 transitions. Word has length 305 [2023-12-15 21:57:54,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:57:54,059 INFO L495 AbstractCegarLoop]: Abstraction has 370 states and 479 transitions. [2023-12-15 21:57:54,059 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.157894736842105) internal successors, (98), 18 states have internal predecessors, (98), 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 21:57:54,059 INFO L276 IsEmpty]: Start isEmpty. Operand 370 states and 479 transitions. [2023-12-15 21:57:54,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 369 [2023-12-15 21:57:54,061 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:57:54,061 INFO L195 NwaCegarLoop]: trace histogram [100, 100, 100, 14, 14, 5, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:57:54,076 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 21:57:54,269 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,SelfDestructingSolverStorable14 [2023-12-15 21:57:54,269 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:57:54,269 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:57:54,269 INFO L85 PathProgramCache]: Analyzing trace with hash 726149133, now seen corresponding path program 9 times [2023-12-15 21:57:54,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:57:54,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816763686] [2023-12-15 21:57:54,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:57:54,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:57:54,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:57:55,223 INFO L134 CoverageAnalysis]: Checked inductivity of 15616 backedges. 0 proven. 196 refuted. 0 times theorem prover too weak. 15420 trivial. 0 not checked. [2023-12-15 21:57:55,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:57:55,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816763686] [2023-12-15 21:57:55,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [816763686] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 21:57:55,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [165312682] [2023-12-15 21:57:55,224 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-15 21:57:55,224 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:57:55,224 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:57:55,239 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 21:57:55,264 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 21:57:55,601 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2023-12-15 21:57:55,601 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-15 21:57:55,604 INFO L262 TraceCheckSpWp]: Trace formula consists of 433 conjuncts, 40 conjunts are in the unsatisfiable core [2023-12-15 21:57:55,613 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:57:55,859 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 23 treesize of output 1 [2023-12-15 21:57:56,004 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 24 [2023-12-15 21:57:56,382 INFO L349 Elim1Store]: treesize reduction 52, result has 26.8 percent of original size [2023-12-15 21:57:56,382 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 22 [2023-12-15 21:57:56,453 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-12-15 21:57:56,459 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-15 21:57:56,459 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 34 treesize of output 10 [2023-12-15 21:57:56,485 INFO L134 CoverageAnalysis]: Checked inductivity of 15616 backedges. 524 proven. 4 refuted. 0 times theorem prover too weak. 15088 trivial. 0 not checked. [2023-12-15 21:57:56,485 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 21:58:05,310 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 86 treesize of output 82 [2023-12-15 21:58:05,337 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-15 21:58:05,337 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 9842 treesize of output 9094 [2023-12-15 21:58:07,219 INFO L134 CoverageAnalysis]: Checked inductivity of 15616 backedges. 506 proven. 22 refuted. 0 times theorem prover too weak. 15088 trivial. 0 not checked. [2023-12-15 21:58:07,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [165312682] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 21:58:07,219 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-15 21:58:07,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 12, 13] total 40 [2023-12-15 21:58:07,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853933910] [2023-12-15 21:58:07,220 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-15 21:58:07,220 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2023-12-15 21:58:07,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:58:07,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2023-12-15 21:58:07,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=235, Invalid=1403, Unknown=2, NotChecked=0, Total=1640 [2023-12-15 21:58:07,221 INFO L87 Difference]: Start difference. First operand 370 states and 479 transitions. Second operand has 41 states, 41 states have (on average 2.317073170731707) internal successors, (95), 40 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 21:58:11,194 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.95s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-15 21:58:13,118 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.84s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-15 21:58:16,123 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.54s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-12-15 21:58:21,619 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.19s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-15 21:58:24,401 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.75s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-15 21:58:26,893 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.48s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] Received shutdown request... [2023-12-15 21:58:28,636 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-15 21:58:28,636 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-15 21:58:29,279 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.35s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-15 21:58:29,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-12-15 21:58:29,307 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 775 GetRequests, 712 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 952 ImplicationChecksByTransitivity, 14.5s TimeCoverageRelationStatistics Valid=931, Invalid=3226, Unknown=3, NotChecked=0, Total=4160 [2023-12-15 21:58:29,307 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 208 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 284 mSolverCounterSat, 64 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 208 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 352 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 284 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.8s IncrementalHoareTripleChecker+Time [2023-12-15 21:58:29,307 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [208 Valid, 16 Invalid, 352 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 284 Invalid, 4 Unknown, 0 Unchecked, 16.8s Time] [2023-12-15 21:58:29,308 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-15 21:58:29,315 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 21:58:29,509 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,SelfDestructingSolverStorable15 [2023-12-15 21:58:29,510 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (370states) and FLOYD_HOARE automaton (currently 26 states, 41 states before enhancement),while ReachableStatesComputation was computing reachable states (199 states constructed, input type IntersectNwa). [2023-12-15 21:58:29,516 INFO L445 BasicCegarLoop]: Path program histogram: [9, 2, 1, 1, 1, 1, 1] [2023-12-15 21:58:29,519 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-15 21:58:29,520 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.12 09:58:29 BoogieIcfgContainer [2023-12-15 21:58:29,520 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-15 21:58:29,521 INFO L158 Benchmark]: Toolchain (without parser) took 69480.00ms. Allocated memory was 253.8MB in the beginning and 600.8MB in the end (delta: 347.1MB). Free memory was 200.6MB in the beginning and 267.6MB in the end (delta: -67.0MB). Peak memory consumption was 281.3MB. Max. memory is 8.0GB. [2023-12-15 21:58:29,521 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 192.9MB. Free memory is still 139.3MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-15 21:58:29,522 INFO L158 Benchmark]: CACSL2BoogieTranslator took 194.97ms. Allocated memory is still 253.8MB. Free memory was 200.6MB in the beginning and 188.4MB in the end (delta: 12.2MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2023-12-15 21:58:29,522 INFO L158 Benchmark]: Boogie Procedure Inliner took 55.48ms. Allocated memory is still 253.8MB. Free memory was 188.4MB in the beginning and 186.5MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-15 21:58:29,530 INFO L158 Benchmark]: Boogie Preprocessor took 32.51ms. Allocated memory is still 253.8MB. Free memory was 185.9MB in the beginning and 183.3MB in the end (delta: 2.6MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2023-12-15 21:58:29,531 INFO L158 Benchmark]: RCFGBuilder took 349.73ms. Allocated memory is still 253.8MB. Free memory was 183.3MB in the beginning and 163.4MB in the end (delta: 19.9MB). Peak memory consumption was 19.9MB. Max. memory is 8.0GB. [2023-12-15 21:58:29,531 INFO L158 Benchmark]: TraceAbstraction took 68841.85ms. Allocated memory was 253.8MB in the beginning and 600.8MB in the end (delta: 347.1MB). Free memory was 162.9MB in the beginning and 267.6MB in the end (delta: -104.8MB). Peak memory consumption was 243.5MB. Max. memory is 8.0GB. [2023-12-15 21:58:29,532 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 192.9MB. Free memory is still 139.3MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 194.97ms. Allocated memory is still 253.8MB. Free memory was 200.6MB in the beginning and 188.4MB in the end (delta: 12.2MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 55.48ms. Allocated memory is still 253.8MB. Free memory was 188.4MB in the beginning and 186.5MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 32.51ms. Allocated memory is still 253.8MB. Free memory was 185.9MB in the beginning and 183.3MB in the end (delta: 2.6MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * RCFGBuilder took 349.73ms. Allocated memory is still 253.8MB. Free memory was 183.3MB in the beginning and 163.4MB in the end (delta: 19.9MB). Peak memory consumption was 19.9MB. Max. memory is 8.0GB. * TraceAbstraction took 68841.85ms. Allocated memory was 253.8MB in the beginning and 600.8MB in the end (delta: 347.1MB). Free memory was 162.9MB in the beginning and 267.6MB in the end (delta: -104.8MB). Peak memory consumption was 243.5MB. 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: 7]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 7). Cancelled while NwaCegarLoop was constructing difference of abstraction (370states) and FLOYD_HOARE automaton (currently 26 states, 41 states before enhancement),while ReachableStatesComputation was computing reachable states (199 states constructed, input type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 22 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 68.8s, OverallIterations: 16, TraceHistogramMax: 100, PathProgramHistogramMax: 9, EmptinessCheckTime: 0.0s, AutomataDifference: 31.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 4 mSolverCounterUnknown, 5829 SdHoareTripleChecker+Valid, 17.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 5829 mSDsluCounter, 796 SdHoareTripleChecker+Invalid, 17.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 575 mSDsCounter, 343 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1665 IncrementalHoareTripleChecker+Invalid, 2012 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 343 mSolverCounterUnsat, 221 mSDtfsCounter, 1665 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3440 GetRequests, 2855 SyntacticMatches, 16 SemanticMatches, 569 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31294 ImplicationChecksByTransitivity, 23.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=370occurred in iteration=15, InterpolantAutomatonStates: 417, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 15 MinimizatonAttempts, 885 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.5s SsaConstructionTime, 15.0s SatisfiabilityAnalysisTime, 18.1s InterpolantComputationTime, 3094 NumberOfCodeBlocks, 2612 NumberOfCodeBlocksAsserted, 76 NumberOfCheckSat, 4540 ConstructedInterpolants, 10 QuantifiedInterpolants, 15870 SizeOfPredicates, 46 NumberOfNonLiveVariables, 7066 ConjunctsInSsa, 116 ConjunctsInUnsatCore, 37 InterpolantComputations, 6 PerfectInterpolantSequences, 90027/114845 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