/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/hardness-nfm22/hardness_variablewrapping_wrapper-a_file-5.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-15 21:30:34,894 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-15 21:30:34,934 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 21:30:34,941 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-15 21:30:34,942 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-15 21:30:34,966 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-15 21:30:34,966 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-15 21:30:34,966 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-15 21:30:34,967 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-15 21:30:34,967 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-15 21:30:34,967 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-15 21:30:34,968 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-15 21:30:34,968 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-15 21:30:34,968 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-15 21:30:34,968 INFO L153 SettingsManager]: * Use SBE=true [2023-12-15 21:30:34,969 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-15 21:30:34,969 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-15 21:30:34,969 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-15 21:30:34,969 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-15 21:30:34,970 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-15 21:30:34,970 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-15 21:30:34,974 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-15 21:30:34,974 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-15 21:30:34,974 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-15 21:30:34,980 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-15 21:30:34,980 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-15 21:30:34,980 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-15 21:30:34,981 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-15 21:30:34,982 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-15 21:30:34,982 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-15 21:30:34,983 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-15 21:30:34,983 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-15 21:30:34,983 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 21:30:34,983 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-15 21:30:34,983 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-15 21:30:34,983 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-15 21:30:34,983 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-15 21:30:34,983 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-15 21:30:34,984 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-15 21:30:34,984 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-15 21:30:34,984 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-15 21:30:34,984 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-15 21:30:34,984 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-15 21:30:34,984 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-15 21:30:35,171 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-15 21:30:35,186 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-15 21:30:35,188 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-15 21:30:35,188 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-15 21:30:35,189 INFO L274 PluginConnector]: CDTParser initialized [2023-12-15 21:30:35,189 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_variablewrapping_wrapper-a_file-5.i [2023-12-15 21:30:36,117 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-15 21:30:36,287 INFO L384 CDTParser]: Found 1 translation units. [2023-12-15 21:30:36,287 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_variablewrapping_wrapper-a_file-5.i [2023-12-15 21:30:36,294 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ef6535899/ef1aba742f4641829cf6960be37ed805/FLAG67280a85d [2023-12-15 21:30:36,304 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ef6535899/ef1aba742f4641829cf6960be37ed805 [2023-12-15 21:30:36,305 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-15 21:30:36,306 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-15 21:30:36,309 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-15 21:30:36,309 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-15 21:30:36,314 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-15 21:30:36,315 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 09:30:36" (1/1) ... [2023-12-15 21:30:36,316 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@467b2c4e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:30:36, skipping insertion in model container [2023-12-15 21:30:36,316 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 09:30:36" (1/1) ... [2023-12-15 21:30:36,344 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-15 21:30:36,442 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_variablewrapping_wrapper-a_file-5.i[915,928] [2023-12-15 21:30:36,492 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 21:30:36,505 INFO L202 MainTranslator]: Completed pre-run [2023-12-15 21:30:36,513 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_variablewrapping_wrapper-a_file-5.i[915,928] [2023-12-15 21:30:36,545 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 21:30:36,557 INFO L206 MainTranslator]: Completed translation [2023-12-15 21:30:36,557 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:30:36 WrapperNode [2023-12-15 21:30:36,557 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-15 21:30:36,558 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-15 21:30:36,558 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-15 21:30:36,558 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-15 21:30:36,567 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:30:36" (1/1) ... [2023-12-15 21:30:36,577 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:30:36" (1/1) ... [2023-12-15 21:30:36,616 INFO L138 Inliner]: procedures = 26, calls = 158, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 418 [2023-12-15 21:30:36,617 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-15 21:30:36,617 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-15 21:30:36,617 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-15 21:30:36,617 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-15 21:30:36,625 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:30:36" (1/1) ... [2023-12-15 21:30:36,625 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:30:36" (1/1) ... [2023-12-15 21:30:36,630 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:30:36" (1/1) ... [2023-12-15 21:30:36,645 INFO L175 MemorySlicer]: Split 122 memory accesses to 6 slices as follows [2, 6, 3, 28, 59, 24]. 48 percent of accesses are in the largest equivalence class. The 17 initializations are split as follows [2, 1, 1, 6, 4, 3]. The 17 writes are split as follows [0, 1, 1, 6, 6, 3]. [2023-12-15 21:30:36,646 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:30:36" (1/1) ... [2023-12-15 21:30:36,646 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:30:36" (1/1) ... [2023-12-15 21:30:36,664 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:30:36" (1/1) ... [2023-12-15 21:30:36,670 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:30:36" (1/1) ... [2023-12-15 21:30:36,673 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:30:36" (1/1) ... [2023-12-15 21:30:36,674 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:30:36" (1/1) ... [2023-12-15 21:30:36,700 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-15 21:30:36,701 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-15 21:30:36,701 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-15 21:30:36,701 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-15 21:30:36,701 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:30:36" (1/1) ... [2023-12-15 21:30:36,705 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 21:30:36,715 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:30:36,733 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 21:30:36,760 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 21:30:36,764 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-15 21:30:36,765 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-12-15 21:30:36,765 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-12-15 21:30:36,765 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-12-15 21:30:36,765 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-12-15 21:30:36,765 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-12-15 21:30:36,766 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2023-12-15 21:30:36,767 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-12-15 21:30:36,767 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-12-15 21:30:36,767 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-12-15 21:30:36,767 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-12-15 21:30:36,767 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2023-12-15 21:30:36,768 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2023-12-15 21:30:36,768 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-15 21:30:36,768 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-15 21:30:36,768 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-15 21:30:36,768 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-12-15 21:30:36,768 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-12-15 21:30:36,768 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-12-15 21:30:36,768 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-12-15 21:30:36,769 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2023-12-15 21:30:36,769 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-15 21:30:36,769 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-15 21:30:36,916 INFO L241 CfgBuilder]: Building ICFG [2023-12-15 21:30:36,918 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-15 21:30:37,337 INFO L282 CfgBuilder]: Performing block encoding [2023-12-15 21:30:37,363 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-15 21:30:37,363 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-15 21:30:37,364 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 09:30:37 BoogieIcfgContainer [2023-12-15 21:30:37,364 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-15 21:30:37,366 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-15 21:30:37,366 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-15 21:30:37,368 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-15 21:30:37,368 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 09:30:36" (1/3) ... [2023-12-15 21:30:37,368 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57f46f94 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 09:30:37, skipping insertion in model container [2023-12-15 21:30:37,369 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:30:36" (2/3) ... [2023-12-15 21:30:37,369 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57f46f94 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 09:30:37, skipping insertion in model container [2023-12-15 21:30:37,369 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 09:30:37" (3/3) ... [2023-12-15 21:30:37,370 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_variablewrapping_wrapper-a_file-5.i [2023-12-15 21:30:37,381 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-15 21:30:37,381 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-15 21:30:37,416 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-15 21:30:37,420 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;@6ad76d70, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-15 21:30:37,420 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-15 21:30:37,423 INFO L276 IsEmpty]: Start isEmpty. Operand has 88 states, 65 states have (on average 1.3692307692307693) internal successors, (89), 66 states have internal predecessors, (89), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-12-15 21:30:37,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-12-15 21:30:37,434 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:30:37,435 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:30:37,435 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:30:37,439 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:30:37,439 INFO L85 PathProgramCache]: Analyzing trace with hash 1309560060, now seen corresponding path program 1 times [2023-12-15 21:30:37,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:30:37,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2032892684] [2023-12-15 21:30:37,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:30:37,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:30:37,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:30:37,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:30:37,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2032892684] [2023-12-15 21:30:37,629 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-12-15 21:30:37,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1254901293] [2023-12-15 21:30:37,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:30:37,630 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:30:37,630 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:30:37,633 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 21:30:37,647 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 21:30:37,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:30:37,820 INFO L262 TraceCheckSpWp]: Trace formula consists of 444 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-15 21:30:37,828 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:30:37,864 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 722 trivial. 0 not checked. [2023-12-15 21:30:37,864 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:30:37,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1254901293] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:30:37,865 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:30:37,865 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 21:30:37,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376750451] [2023-12-15 21:30:37,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:30:37,874 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-15 21:30:37,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:30:37,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-15 21:30:37,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-15 21:30:37,898 INFO L87 Difference]: Start difference. First operand has 88 states, 65 states have (on average 1.3692307692307693) internal successors, (89), 66 states have internal predecessors, (89), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) Second operand has 2 states, 2 states have (on average 23.5) internal successors, (47), 2 states have internal predecessors, (47), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 2 states have call successors, (20) [2023-12-15 21:30:37,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:30:37,928 INFO L93 Difference]: Finished difference Result 173 states and 276 transitions. [2023-12-15 21:30:37,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-15 21:30:37,930 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 23.5) internal successors, (47), 2 states have internal predecessors, (47), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 2 states have call successors, (20) Word has length 142 [2023-12-15 21:30:37,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:30:37,936 INFO L225 Difference]: With dead ends: 173 [2023-12-15 21:30:37,936 INFO L226 Difference]: Without dead ends: 86 [2023-12-15 21:30:37,942 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 141 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 21:30:37,944 INFO L413 NwaCegarLoop]: 119 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 119 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 21:30:37,945 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 119 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 21:30:37,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2023-12-15 21:30:37,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2023-12-15 21:30:37,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 64 states have (on average 1.3125) internal successors, (84), 64 states have internal predecessors, (84), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-12-15 21:30:37,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 124 transitions. [2023-12-15 21:30:37,976 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 124 transitions. Word has length 142 [2023-12-15 21:30:37,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:30:37,976 INFO L495 AbstractCegarLoop]: Abstraction has 86 states and 124 transitions. [2023-12-15 21:30:37,977 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 23.5) internal successors, (47), 2 states have internal predecessors, (47), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 2 states have call successors, (20) [2023-12-15 21:30:37,977 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 124 transitions. [2023-12-15 21:30:37,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-12-15 21:30:37,979 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:30:37,979 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:30:37,995 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 21:30:38,186 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,SelfDestructingSolverStorable0 [2023-12-15 21:30:38,187 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:30:38,187 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:30:38,187 INFO L85 PathProgramCache]: Analyzing trace with hash -2013213484, now seen corresponding path program 1 times [2023-12-15 21:30:38,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:30:38,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270954813] [2023-12-15 21:30:38,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:30:38,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:30:38,256 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:30:38,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1421514638] [2023-12-15 21:30:38,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:30:38,256 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:30:38,257 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:30:38,273 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 21:30:38,300 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 21:30:38,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:30:38,426 INFO L262 TraceCheckSpWp]: Trace formula consists of 444 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-15 21:30:38,438 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:30:38,488 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-12-15 21:30:38,488 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:30:38,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:30:38,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [270954813] [2023-12-15 21:30:38,488 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:30:38,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1421514638] [2023-12-15 21:30:38,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1421514638] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:30:38,489 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:30:38,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 21:30:38,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395121492] [2023-12-15 21:30:38,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:30:38,491 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 21:30:38,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:30:38,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 21:30:38,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-15 21:30:38,493 INFO L87 Difference]: Start difference. First operand 86 states and 124 transitions. Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-15 21:30:38,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:30:38,560 INFO L93 Difference]: Finished difference Result 183 states and 264 transitions. [2023-12-15 21:30:38,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-15 21:30:38,563 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 142 [2023-12-15 21:30:38,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:30:38,565 INFO L225 Difference]: With dead ends: 183 [2023-12-15 21:30:38,565 INFO L226 Difference]: Without dead ends: 98 [2023-12-15 21:30:38,566 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-15 21:30:38,566 INFO L413 NwaCegarLoop]: 116 mSDtfsCounter, 21 mSDsluCounter, 234 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 350 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 21:30:38,567 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 350 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 21:30:38,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2023-12-15 21:30:38,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 88. [2023-12-15 21:30:38,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 66 states have (on average 1.303030303030303) internal successors, (86), 66 states have internal predecessors, (86), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-12-15 21:30:38,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 126 transitions. [2023-12-15 21:30:38,580 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 126 transitions. Word has length 142 [2023-12-15 21:30:38,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:30:38,582 INFO L495 AbstractCegarLoop]: Abstraction has 88 states and 126 transitions. [2023-12-15 21:30:38,582 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-15 21:30:38,582 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 126 transitions. [2023-12-15 21:30:38,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-12-15 21:30:38,584 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:30:38,584 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:30:38,596 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 21:30:38,796 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,SelfDestructingSolverStorable1 [2023-12-15 21:30:38,796 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:30:38,797 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:30:38,797 INFO L85 PathProgramCache]: Analyzing trace with hash 1472407186, now seen corresponding path program 1 times [2023-12-15 21:30:38,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:30:38,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1696831452] [2023-12-15 21:30:38,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:30:38,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:30:38,845 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:30:38,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [694542949] [2023-12-15 21:30:38,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:30:38,845 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:30:38,845 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:30:38,846 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 21:30:38,863 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 21:30:39,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:30:39,006 INFO L262 TraceCheckSpWp]: Trace formula consists of 441 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-15 21:30:39,012 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:30:39,038 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-12-15 21:30:39,039 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:30:39,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:30:39,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1696831452] [2023-12-15 21:30:39,039 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:30:39,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [694542949] [2023-12-15 21:30:39,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [694542949] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:30:39,039 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:30:39,039 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 21:30:39,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519570332] [2023-12-15 21:30:39,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:30:39,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 21:30:39,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:30:39,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 21:30:39,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-15 21:30:39,042 INFO L87 Difference]: Start difference. First operand 88 states and 126 transitions. Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-15 21:30:39,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:30:39,093 INFO L93 Difference]: Finished difference Result 183 states and 262 transitions. [2023-12-15 21:30:39,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-15 21:30:39,095 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 142 [2023-12-15 21:30:39,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:30:39,097 INFO L225 Difference]: With dead ends: 183 [2023-12-15 21:30:39,097 INFO L226 Difference]: Without dead ends: 96 [2023-12-15 21:30:39,097 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-15 21:30:39,098 INFO L413 NwaCegarLoop]: 116 mSDtfsCounter, 12 mSDsluCounter, 232 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 348 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 21:30:39,098 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 348 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 21:30:39,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2023-12-15 21:30:39,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 90. [2023-12-15 21:30:39,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 68 states have (on average 1.2941176470588236) internal successors, (88), 68 states have internal predecessors, (88), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-12-15 21:30:39,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 128 transitions. [2023-12-15 21:30:39,111 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 128 transitions. Word has length 142 [2023-12-15 21:30:39,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:30:39,112 INFO L495 AbstractCegarLoop]: Abstraction has 90 states and 128 transitions. [2023-12-15 21:30:39,112 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-15 21:30:39,112 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 128 transitions. [2023-12-15 21:30:39,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-12-15 21:30:39,113 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:30:39,114 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:30:39,120 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 21:30:39,316 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:30:39,316 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:30:39,317 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:30:39,317 INFO L85 PathProgramCache]: Analyzing trace with hash 1529665488, now seen corresponding path program 1 times [2023-12-15 21:30:39,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:30:39,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1382646177] [2023-12-15 21:30:39,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:30:39,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:30:39,369 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:30:39,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2022868699] [2023-12-15 21:30:39,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:30:39,370 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:30:39,370 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:30:39,371 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 21:30:39,395 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 21:30:39,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:30:39,503 INFO L262 TraceCheckSpWp]: Trace formula consists of 436 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-15 21:30:39,506 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:30:39,520 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-12-15 21:30:39,520 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:30:39,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:30:39,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1382646177] [2023-12-15 21:30:39,520 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:30:39,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2022868699] [2023-12-15 21:30:39,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2022868699] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:30:39,521 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:30:39,521 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 21:30:39,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199898804] [2023-12-15 21:30:39,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:30:39,522 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 21:30:39,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:30:39,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 21:30:39,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-15 21:30:39,524 INFO L87 Difference]: Start difference. First operand 90 states and 128 transitions. Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-15 21:30:39,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:30:39,554 INFO L93 Difference]: Finished difference Result 183 states and 260 transitions. [2023-12-15 21:30:39,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-15 21:30:39,554 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 142 [2023-12-15 21:30:39,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:30:39,557 INFO L225 Difference]: With dead ends: 183 [2023-12-15 21:30:39,557 INFO L226 Difference]: Without dead ends: 94 [2023-12-15 21:30:39,560 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-15 21:30:39,565 INFO L413 NwaCegarLoop]: 117 mSDtfsCounter, 3 mSDsluCounter, 231 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 348 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 21:30:39,566 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 348 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 21:30:39,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2023-12-15 21:30:39,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 92. [2023-12-15 21:30:39,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 70 states have (on average 1.2857142857142858) internal successors, (90), 70 states have internal predecessors, (90), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-12-15 21:30:39,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 130 transitions. [2023-12-15 21:30:39,578 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 130 transitions. Word has length 142 [2023-12-15 21:30:39,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:30:39,579 INFO L495 AbstractCegarLoop]: Abstraction has 92 states and 130 transitions. [2023-12-15 21:30:39,579 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-15 21:30:39,579 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 130 transitions. [2023-12-15 21:30:39,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-12-15 21:30:39,580 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:30:39,580 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:30:39,590 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-15 21:30:39,786 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:30:39,787 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:30:39,787 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:30:39,787 INFO L85 PathProgramCache]: Analyzing trace with hash 1529725070, now seen corresponding path program 1 times [2023-12-15 21:30:39,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:30:39,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761544853] [2023-12-15 21:30:39,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:30:39,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:30:39,824 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:30:39,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [224399511] [2023-12-15 21:30:39,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:30:39,837 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:30:39,837 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:30:39,840 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 21:30:39,854 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 21:30:39,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:30:39,959 INFO L262 TraceCheckSpWp]: Trace formula consists of 431 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-15 21:30:39,962 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:30:39,977 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-12-15 21:30:39,977 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:30:39,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:30:39,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761544853] [2023-12-15 21:30:39,978 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:30:39,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [224399511] [2023-12-15 21:30:39,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [224399511] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:30:39,978 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:30:39,978 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 21:30:39,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186970516] [2023-12-15 21:30:39,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:30:39,978 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 21:30:39,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:30:39,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 21:30:39,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-15 21:30:39,980 INFO L87 Difference]: Start difference. First operand 92 states and 130 transitions. Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-15 21:30:40,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:30:40,015 INFO L93 Difference]: Finished difference Result 210 states and 296 transitions. [2023-12-15 21:30:40,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-15 21:30:40,020 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 142 [2023-12-15 21:30:40,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:30:40,021 INFO L225 Difference]: With dead ends: 210 [2023-12-15 21:30:40,021 INFO L226 Difference]: Without dead ends: 119 [2023-12-15 21:30:40,022 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-15 21:30:40,023 INFO L413 NwaCegarLoop]: 135 mSDtfsCounter, 46 mSDsluCounter, 239 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 374 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 21:30:40,024 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 374 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 21:30:40,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2023-12-15 21:30:40,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 94. [2023-12-15 21:30:40,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 72 states have (on average 1.2777777777777777) internal successors, (92), 72 states have internal predecessors, (92), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-12-15 21:30:40,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 132 transitions. [2023-12-15 21:30:40,046 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 132 transitions. Word has length 142 [2023-12-15 21:30:40,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:30:40,047 INFO L495 AbstractCegarLoop]: Abstraction has 94 states and 132 transitions. [2023-12-15 21:30:40,047 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-15 21:30:40,047 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 132 transitions. [2023-12-15 21:30:40,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2023-12-15 21:30:40,055 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:30:40,055 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:30:40,064 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-15 21:30:40,262 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:30:40,262 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:30:40,263 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:30:40,263 INFO L85 PathProgramCache]: Analyzing trace with hash 231625523, now seen corresponding path program 1 times [2023-12-15 21:30:40,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:30:40,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369629509] [2023-12-15 21:30:40,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:30:40,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:30:40,289 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:30:40,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [101610840] [2023-12-15 21:30:40,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:30:40,289 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:30:40,289 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:30:40,290 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 21:30:40,313 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 21:30:40,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:30:40,428 INFO L262 TraceCheckSpWp]: Trace formula consists of 444 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-15 21:30:40,431 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:30:40,455 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 19 treesize of output 7 [2023-12-15 21:30:40,460 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-12-15 21:30:40,460 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:30:40,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:30:40,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369629509] [2023-12-15 21:30:40,460 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:30:40,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [101610840] [2023-12-15 21:30:40,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [101610840] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:30:40,460 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:30:40,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 21:30:40,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042107167] [2023-12-15 21:30:40,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:30:40,461 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 21:30:40,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:30:40,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 21:30:40,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 21:30:40,462 INFO L87 Difference]: Start difference. First operand 94 states and 132 transitions. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-15 21:30:40,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:30:40,475 INFO L93 Difference]: Finished difference Result 212 states and 297 transitions. [2023-12-15 21:30:40,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 21:30:40,476 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 144 [2023-12-15 21:30:40,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:30:40,477 INFO L225 Difference]: With dead ends: 212 [2023-12-15 21:30:40,477 INFO L226 Difference]: Without dead ends: 119 [2023-12-15 21:30:40,477 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 142 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 21:30:40,478 INFO L413 NwaCegarLoop]: 128 mSDtfsCounter, 32 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 242 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 21:30:40,478 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 242 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 21:30:40,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2023-12-15 21:30:40,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 94. [2023-12-15 21:30:40,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 72 states have (on average 1.2638888888888888) internal successors, (91), 72 states have internal predecessors, (91), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-12-15 21:30:40,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 131 transitions. [2023-12-15 21:30:40,482 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 131 transitions. Word has length 144 [2023-12-15 21:30:40,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:30:40,483 INFO L495 AbstractCegarLoop]: Abstraction has 94 states and 131 transitions. [2023-12-15 21:30:40,483 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-15 21:30:40,483 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 131 transitions. [2023-12-15 21:30:40,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2023-12-15 21:30:40,484 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:30:40,484 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:30:40,504 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 21:30:40,689 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:30:40,690 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:30:40,690 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:30:40,690 INFO L85 PathProgramCache]: Analyzing trace with hash -1048238155, now seen corresponding path program 1 times [2023-12-15 21:30:40,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:30:40,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820648300] [2023-12-15 21:30:40,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:30:40,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:30:40,721 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:30:40,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [626495894] [2023-12-15 21:30:40,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:30:40,721 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:30:40,722 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:30:40,727 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 21:30:40,740 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 21:30:40,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:30:40,888 INFO L262 TraceCheckSpWp]: Trace formula consists of 444 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-15 21:30:40,891 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:30:40,919 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 21:30:40,925 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-12-15 21:30:40,926 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:30:40,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:30:40,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [820648300] [2023-12-15 21:30:40,926 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:30:40,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [626495894] [2023-12-15 21:30:40,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [626495894] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:30:40,926 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:30:40,926 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 21:30:40,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485935038] [2023-12-15 21:30:40,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:30:40,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 21:30:40,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:30:40,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 21:30:40,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 21:30:40,927 INFO L87 Difference]: Start difference. First operand 94 states and 131 transitions. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-15 21:30:40,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:30:40,940 INFO L93 Difference]: Finished difference Result 187 states and 261 transitions. [2023-12-15 21:30:40,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 21:30:40,941 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 144 [2023-12-15 21:30:40,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:30:40,941 INFO L225 Difference]: With dead ends: 187 [2023-12-15 21:30:40,941 INFO L226 Difference]: Without dead ends: 94 [2023-12-15 21:30:40,942 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 142 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 21:30:40,942 INFO L413 NwaCegarLoop]: 116 mSDtfsCounter, 0 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 231 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 21:30:40,942 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 231 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 21:30:40,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2023-12-15 21:30:40,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 94. [2023-12-15 21:30:40,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 72 states have (on average 1.25) internal successors, (90), 72 states have internal predecessors, (90), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-12-15 21:30:40,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 130 transitions. [2023-12-15 21:30:40,946 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 130 transitions. Word has length 144 [2023-12-15 21:30:40,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:30:40,947 INFO L495 AbstractCegarLoop]: Abstraction has 94 states and 130 transitions. [2023-12-15 21:30:40,947 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-15 21:30:40,947 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 130 transitions. [2023-12-15 21:30:40,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2023-12-15 21:30:40,948 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:30:40,948 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:30:40,961 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 21:30:41,156 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:30:41,157 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:30:41,157 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:30:41,157 INFO L85 PathProgramCache]: Analyzing trace with hash 1538074778, now seen corresponding path program 1 times [2023-12-15 21:30:41,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:30:41,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271340215] [2023-12-15 21:30:41,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:30:41,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:30:41,176 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:30:41,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1310958378] [2023-12-15 21:30:41,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:30:41,177 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:30:41,177 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:30:41,180 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 21:30:41,181 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 21:30:41,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:30:41,312 INFO L262 TraceCheckSpWp]: Trace formula consists of 459 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-15 21:30:41,314 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:30:41,321 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 19 treesize of output 7 [2023-12-15 21:30:41,326 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-12-15 21:30:41,326 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:30:41,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:30:41,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1271340215] [2023-12-15 21:30:41,326 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:30:41,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1310958378] [2023-12-15 21:30:41,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1310958378] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:30:41,326 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:30:41,326 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 21:30:41,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886589969] [2023-12-15 21:30:41,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:30:41,327 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 21:30:41,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:30:41,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 21:30:41,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 21:30:41,327 INFO L87 Difference]: Start difference. First operand 94 states and 130 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-15 21:30:41,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:30:41,341 INFO L93 Difference]: Finished difference Result 187 states and 259 transitions. [2023-12-15 21:30:41,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 21:30:41,341 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 146 [2023-12-15 21:30:41,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:30:41,342 INFO L225 Difference]: With dead ends: 187 [2023-12-15 21:30:41,342 INFO L226 Difference]: Without dead ends: 94 [2023-12-15 21:30:41,343 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 144 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 21:30:41,343 INFO L413 NwaCegarLoop]: 115 mSDtfsCounter, 1 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 228 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 21:30:41,343 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 228 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 21:30:41,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2023-12-15 21:30:41,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 94. [2023-12-15 21:30:41,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 72 states have (on average 1.2361111111111112) internal successors, (89), 72 states have internal predecessors, (89), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-12-15 21:30:41,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 129 transitions. [2023-12-15 21:30:41,346 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 129 transitions. Word has length 146 [2023-12-15 21:30:41,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:30:41,346 INFO L495 AbstractCegarLoop]: Abstraction has 94 states and 129 transitions. [2023-12-15 21:30:41,346 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-15 21:30:41,347 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 129 transitions. [2023-12-15 21:30:41,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2023-12-15 21:30:41,347 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:30:41,347 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:30:41,358 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 21:30:41,553 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,SelfDestructingSolverStorable7 [2023-12-15 21:30:41,553 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:30:41,554 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:30:41,554 INFO L85 PathProgramCache]: Analyzing trace with hash -150868964, now seen corresponding path program 1 times [2023-12-15 21:30:41,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:30:41,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639917290] [2023-12-15 21:30:41,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:30:41,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:30:41,572 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:30:41,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [345786116] [2023-12-15 21:30:41,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:30:41,572 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:30:41,573 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:30:41,573 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 21:30:41,598 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 21:30:41,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:30:41,731 INFO L262 TraceCheckSpWp]: Trace formula consists of 459 conjuncts, 32 conjunts are in the unsatisfiable core [2023-12-15 21:30:41,735 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:30:41,757 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 13 treesize of output 9 [2023-12-15 21:30:41,768 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 36 treesize of output 13 [2023-12-15 21:30:41,799 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 703 trivial. 0 not checked. [2023-12-15 21:30:41,800 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 21:30:41,926 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-12-15 21:30:41,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:30:41,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [639917290] [2023-12-15 21:30:41,927 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:30:41,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [345786116] [2023-12-15 21:30:41,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [345786116] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-15 21:30:41,927 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 21:30:41,927 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10] total 13 [2023-12-15 21:30:41,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661703553] [2023-12-15 21:30:41,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:30:41,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-15 21:30:41,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:30:41,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-15 21:30:41,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2023-12-15 21:30:41,930 INFO L87 Difference]: Start difference. First operand 94 states and 129 transitions. Second operand has 8 states, 8 states have (on average 6.125) internal successors, (49), 8 states have internal predecessors, (49), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-15 21:30:42,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:30:42,101 INFO L93 Difference]: Finished difference Result 268 states and 371 transitions. [2023-12-15 21:30:42,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-15 21:30:42,101 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.125) internal successors, (49), 8 states have internal predecessors, (49), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 146 [2023-12-15 21:30:42,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:30:42,102 INFO L225 Difference]: With dead ends: 268 [2023-12-15 21:30:42,102 INFO L226 Difference]: Without dead ends: 175 [2023-12-15 21:30:42,103 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 297 GetRequests, 279 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=308, Unknown=0, NotChecked=0, Total=380 [2023-12-15 21:30:42,103 INFO L413 NwaCegarLoop]: 201 mSDtfsCounter, 213 mSDsluCounter, 956 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 213 SdHoareTripleChecker+Valid, 1157 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 21:30:42,103 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [213 Valid, 1157 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 21:30:42,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2023-12-15 21:30:42,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 92. [2023-12-15 21:30:42,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 70 states have (on average 1.2285714285714286) internal successors, (86), 70 states have internal predecessors, (86), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-12-15 21:30:42,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 126 transitions. [2023-12-15 21:30:42,107 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 126 transitions. Word has length 146 [2023-12-15 21:30:42,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:30:42,108 INFO L495 AbstractCegarLoop]: Abstraction has 92 states and 126 transitions. [2023-12-15 21:30:42,108 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.125) internal successors, (49), 8 states have internal predecessors, (49), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-15 21:30:42,108 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 126 transitions. [2023-12-15 21:30:42,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2023-12-15 21:30:42,108 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:30:42,109 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:30:42,114 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-12-15 21:30:42,314 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:30:42,314 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:30:42,315 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:30:42,315 INFO L85 PathProgramCache]: Analyzing trace with hash -1657340374, now seen corresponding path program 1 times [2023-12-15 21:30:42,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:30:42,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573159436] [2023-12-15 21:30:42,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:30:42,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:30:42,332 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:30:42,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1250053850] [2023-12-15 21:30:42,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:30:42,333 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:30:42,333 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:30:42,334 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 21:30:42,339 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 21:30:42,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:30:42,482 INFO L262 TraceCheckSpWp]: Trace formula consists of 453 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-15 21:30:42,485 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:30:42,504 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-12-15 21:30:42,504 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:30:42,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:30:42,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1573159436] [2023-12-15 21:30:42,504 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:30:42,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1250053850] [2023-12-15 21:30:42,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1250053850] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:30:42,504 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:30:42,504 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-15 21:30:42,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087229181] [2023-12-15 21:30:42,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:30:42,505 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-15 21:30:42,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:30:42,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-15 21:30:42,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-15 21:30:42,506 INFO L87 Difference]: Start difference. First operand 92 states and 126 transitions. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-15 21:30:42,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:30:42,539 INFO L93 Difference]: Finished difference Result 201 states and 275 transitions. [2023-12-15 21:30:42,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-15 21:30:42,540 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 146 [2023-12-15 21:30:42,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:30:42,541 INFO L225 Difference]: With dead ends: 201 [2023-12-15 21:30:42,541 INFO L226 Difference]: Without dead ends: 110 [2023-12-15 21:30:42,541 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-15 21:30:42,542 INFO L413 NwaCegarLoop]: 118 mSDtfsCounter, 54 mSDsluCounter, 324 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 442 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 21:30:42,542 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 442 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 21:30:42,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2023-12-15 21:30:42,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 95. [2023-12-15 21:30:42,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 73 states have (on average 1.2191780821917808) internal successors, (89), 73 states have internal predecessors, (89), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-12-15 21:30:42,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 129 transitions. [2023-12-15 21:30:42,546 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 129 transitions. Word has length 146 [2023-12-15 21:30:42,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:30:42,546 INFO L495 AbstractCegarLoop]: Abstraction has 95 states and 129 transitions. [2023-12-15 21:30:42,546 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-15 21:30:42,546 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 129 transitions. [2023-12-15 21:30:42,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2023-12-15 21:30:42,547 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:30:42,547 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:30:42,582 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 21:30:42,751 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,SelfDestructingSolverStorable9 [2023-12-15 21:30:42,752 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:30:42,752 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:30:42,752 INFO L85 PathProgramCache]: Analyzing trace with hash -781700388, now seen corresponding path program 1 times [2023-12-15 21:30:42,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:30:42,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299569935] [2023-12-15 21:30:42,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:30:42,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:30:42,773 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:30:42,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [389506128] [2023-12-15 21:30:42,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:30:42,773 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:30:42,774 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:30:42,774 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 21:30:42,801 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 21:30:42,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:30:42,981 INFO L262 TraceCheckSpWp]: Trace formula consists of 465 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-15 21:30:42,985 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:30:43,012 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 17 treesize of output 9 [2023-12-15 21:30:43,020 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-12-15 21:30:43,020 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:30:43,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:30:43,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299569935] [2023-12-15 21:30:43,020 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:30:43,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [389506128] [2023-12-15 21:30:43,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [389506128] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:30:43,021 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:30:43,021 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-15 21:30:43,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6309408] [2023-12-15 21:30:43,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:30:43,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-15 21:30:43,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:30:43,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-15 21:30:43,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-15 21:30:43,022 INFO L87 Difference]: Start difference. First operand 95 states and 129 transitions. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-15 21:30:43,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:30:43,054 INFO L93 Difference]: Finished difference Result 242 states and 324 transitions. [2023-12-15 21:30:43,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-15 21:30:43,055 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 148 [2023-12-15 21:30:43,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:30:43,057 INFO L225 Difference]: With dead ends: 242 [2023-12-15 21:30:43,057 INFO L226 Difference]: Without dead ends: 148 [2023-12-15 21:30:43,057 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-15 21:30:43,057 INFO L413 NwaCegarLoop]: 111 mSDtfsCounter, 69 mSDsluCounter, 337 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 448 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 21:30:43,058 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 448 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 21:30:43,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2023-12-15 21:30:43,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 110. [2023-12-15 21:30:43,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 88 states have (on average 1.2159090909090908) internal successors, (107), 88 states have internal predecessors, (107), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-12-15 21:30:43,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 147 transitions. [2023-12-15 21:30:43,062 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 147 transitions. Word has length 148 [2023-12-15 21:30:43,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:30:43,063 INFO L495 AbstractCegarLoop]: Abstraction has 110 states and 147 transitions. [2023-12-15 21:30:43,063 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-15 21:30:43,063 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 147 transitions. [2023-12-15 21:30:43,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2023-12-15 21:30:43,064 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:30:43,064 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:30:43,082 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 21:30:43,270 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,SelfDestructingSolverStorable10 [2023-12-15 21:30:43,270 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:30:43,270 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:30:43,271 INFO L85 PathProgramCache]: Analyzing trace with hash 1642851742, now seen corresponding path program 1 times [2023-12-15 21:30:43,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:30:43,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [560516524] [2023-12-15 21:30:43,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:30:43,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:30:43,289 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:30:43,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1478607498] [2023-12-15 21:30:43,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:30:43,289 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:30:43,289 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:30:43,304 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:30:43,306 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-15 21:30:43,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:30:43,454 INFO L262 TraceCheckSpWp]: Trace formula consists of 478 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-15 21:30:43,457 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:30:43,465 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 19 treesize of output 7 [2023-12-15 21:30:43,471 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 21:30:43,476 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-12-15 21:30:43,477 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:30:43,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:30:43,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [560516524] [2023-12-15 21:30:43,477 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:30:43,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1478607498] [2023-12-15 21:30:43,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1478607498] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:30:43,477 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:30:43,477 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 21:30:43,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713695744] [2023-12-15 21:30:43,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:30:43,477 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 21:30:43,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:30:43,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 21:30:43,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 21:30:43,478 INFO L87 Difference]: Start difference. First operand 110 states and 147 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-15 21:30:43,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:30:43,493 INFO L93 Difference]: Finished difference Result 219 states and 293 transitions. [2023-12-15 21:30:43,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 21:30:43,494 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 148 [2023-12-15 21:30:43,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:30:43,495 INFO L225 Difference]: With dead ends: 219 [2023-12-15 21:30:43,495 INFO L226 Difference]: Without dead ends: 110 [2023-12-15 21:30:43,495 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 146 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 21:30:43,495 INFO L413 NwaCegarLoop]: 113 mSDtfsCounter, 32 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 195 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 21:30:43,495 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 195 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 21:30:43,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2023-12-15 21:30:43,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 110. [2023-12-15 21:30:43,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 88 states have (on average 1.1931818181818181) internal successors, (105), 88 states have internal predecessors, (105), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-12-15 21:30:43,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 145 transitions. [2023-12-15 21:30:43,502 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 145 transitions. Word has length 148 [2023-12-15 21:30:43,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:30:43,502 INFO L495 AbstractCegarLoop]: Abstraction has 110 states and 145 transitions. [2023-12-15 21:30:43,502 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-15 21:30:43,502 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 145 transitions. [2023-12-15 21:30:43,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2023-12-15 21:30:43,504 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:30:43,504 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:30:43,512 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-12-15 21:30:43,709 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-12-15 21:30:43,709 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:30:43,709 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:30:43,709 INFO L85 PathProgramCache]: Analyzing trace with hash -1876534395, now seen corresponding path program 1 times [2023-12-15 21:30:43,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:30:43,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921336041] [2023-12-15 21:30:43,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:30:43,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:30:43,726 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:30:43,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1446104836] [2023-12-15 21:30:43,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:30:43,727 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:30:43,727 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:30:43,728 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:30:43,748 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-12-15 21:30:43,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:30:43,883 INFO L262 TraceCheckSpWp]: Trace formula consists of 491 conjuncts, 26 conjunts are in the unsatisfiable core [2023-12-15 21:30:43,891 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:30:43,902 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 28 treesize of output 13 [2023-12-15 21:30:43,974 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-12-15 21:30:43,974 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:30:43,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:30:43,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921336041] [2023-12-15 21:30:43,974 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:30:43,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1446104836] [2023-12-15 21:30:43,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1446104836] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:30:43,974 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:30:43,975 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-15 21:30:43,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602927507] [2023-12-15 21:30:43,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:30:43,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-15 21:30:43,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:30:43,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-15 21:30:43,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-12-15 21:30:43,976 INFO L87 Difference]: Start difference. First operand 110 states and 145 transitions. Second operand has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-15 21:30:44,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:30:44,197 INFO L93 Difference]: Finished difference Result 152 states and 199 transitions. [2023-12-15 21:30:44,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-15 21:30:44,198 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 150 [2023-12-15 21:30:44,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:30:44,199 INFO L225 Difference]: With dead ends: 152 [2023-12-15 21:30:44,199 INFO L226 Difference]: Without dead ends: 150 [2023-12-15 21:30:44,199 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2023-12-15 21:30:44,199 INFO L413 NwaCegarLoop]: 120 mSDtfsCounter, 95 mSDsluCounter, 517 mSDsCounter, 0 mSdLazyCounter, 310 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 637 SdHoareTripleChecker+Invalid, 315 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 310 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-15 21:30:44,199 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [95 Valid, 637 Invalid, 315 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 310 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-15 21:30:44,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2023-12-15 21:30:44,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 132. [2023-12-15 21:30:44,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 101 states have (on average 1.1683168316831682) internal successors, (118), 102 states have internal predecessors, (118), 28 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (28), 27 states have call predecessors, (28), 28 states have call successors, (28) [2023-12-15 21:30:44,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 174 transitions. [2023-12-15 21:30:44,205 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 174 transitions. Word has length 150 [2023-12-15 21:30:44,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:30:44,205 INFO L495 AbstractCegarLoop]: Abstraction has 132 states and 174 transitions. [2023-12-15 21:30:44,205 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-15 21:30:44,205 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 174 transitions. [2023-12-15 21:30:44,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2023-12-15 21:30:44,206 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:30:44,206 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:30:44,214 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-12-15 21:30:44,411 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-12-15 21:30:44,411 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:30:44,412 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:30:44,412 INFO L85 PathProgramCache]: Analyzing trace with hash -1876474813, now seen corresponding path program 1 times [2023-12-15 21:30:44,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:30:44,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407701055] [2023-12-15 21:30:44,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:30:44,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:30:44,428 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:30:44,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2131214838] [2023-12-15 21:30:44,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:30:44,429 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:30:44,429 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:30:44,430 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:30:44,434 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-12-15 21:30:44,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:30:44,582 INFO L262 TraceCheckSpWp]: Trace formula consists of 486 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-15 21:30:44,584 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:30:44,590 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 28 treesize of output 17 [2023-12-15 21:30:44,623 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-12-15 21:30:44,623 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:30:44,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:30:44,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1407701055] [2023-12-15 21:30:44,623 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:30:44,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2131214838] [2023-12-15 21:30:44,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2131214838] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:30:44,623 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:30:44,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-15 21:30:44,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433972436] [2023-12-15 21:30:44,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:30:44,624 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-15 21:30:44,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:30:44,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-15 21:30:44,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-15 21:30:44,625 INFO L87 Difference]: Start difference. First operand 132 states and 174 transitions. Second operand has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-15 21:30:44,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:30:44,773 INFO L93 Difference]: Finished difference Result 288 states and 380 transitions. [2023-12-15 21:30:44,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-15 21:30:44,773 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 150 [2023-12-15 21:30:44,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:30:44,775 INFO L225 Difference]: With dead ends: 288 [2023-12-15 21:30:44,775 INFO L226 Difference]: Without dead ends: 173 [2023-12-15 21:30:44,775 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-15 21:30:44,775 INFO L413 NwaCegarLoop]: 156 mSDtfsCounter, 97 mSDsluCounter, 363 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 519 SdHoareTripleChecker+Invalid, 170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 21:30:44,776 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 519 Invalid, 170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 21:30:44,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2023-12-15 21:30:44,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 160. [2023-12-15 21:30:44,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 116 states have (on average 1.1379310344827587) internal successors, (132), 117 states have internal predecessors, (132), 40 states have call successors, (40), 3 states have call predecessors, (40), 3 states have return successors, (40), 39 states have call predecessors, (40), 40 states have call successors, (40) [2023-12-15 21:30:44,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 212 transitions. [2023-12-15 21:30:44,784 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 212 transitions. Word has length 150 [2023-12-15 21:30:44,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:30:44,785 INFO L495 AbstractCegarLoop]: Abstraction has 160 states and 212 transitions. [2023-12-15 21:30:44,785 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-15 21:30:44,785 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 212 transitions. [2023-12-15 21:30:44,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2023-12-15 21:30:44,786 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:30:44,787 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:30:44,795 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-12-15 21:30:45,000 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:30:45,000 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:30:45,001 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:30:45,001 INFO L85 PathProgramCache]: Analyzing trace with hash -1819216511, now seen corresponding path program 1 times [2023-12-15 21:30:45,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:30:45,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180738053] [2023-12-15 21:30:45,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:30:45,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:30:45,020 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:30:45,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [224522795] [2023-12-15 21:30:45,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:30:45,020 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:30:45,020 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:30:45,037 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:30:45,042 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-12-15 21:30:45,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:30:45,197 INFO L262 TraceCheckSpWp]: Trace formula consists of 481 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-15 21:30:45,199 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:30:45,205 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 11 treesize of output 9 [2023-12-15 21:30:45,229 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-12-15 21:30:45,229 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:30:45,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:30:45,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [180738053] [2023-12-15 21:30:45,229 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:30:45,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [224522795] [2023-12-15 21:30:45,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [224522795] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:30:45,229 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:30:45,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-15 21:30:45,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338899979] [2023-12-15 21:30:45,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:30:45,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-15 21:30:45,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:30:45,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-15 21:30:45,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-15 21:30:45,230 INFO L87 Difference]: Start difference. First operand 160 states and 212 transitions. Second operand has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-15 21:30:45,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:30:45,276 INFO L93 Difference]: Finished difference Result 297 states and 389 transitions. [2023-12-15 21:30:45,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-15 21:30:45,277 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 150 [2023-12-15 21:30:45,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:30:45,278 INFO L225 Difference]: With dead ends: 297 [2023-12-15 21:30:45,278 INFO L226 Difference]: Without dead ends: 182 [2023-12-15 21:30:45,279 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-15 21:30:45,280 INFO L413 NwaCegarLoop]: 189 mSDtfsCounter, 112 mSDsluCounter, 451 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 640 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 21:30:45,280 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 640 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 21:30:45,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2023-12-15 21:30:45,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 160. [2023-12-15 21:30:45,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 116 states have (on average 1.1293103448275863) internal successors, (131), 117 states have internal predecessors, (131), 40 states have call successors, (40), 3 states have call predecessors, (40), 3 states have return successors, (40), 39 states have call predecessors, (40), 40 states have call successors, (40) [2023-12-15 21:30:45,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 211 transitions. [2023-12-15 21:30:45,291 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 211 transitions. Word has length 150 [2023-12-15 21:30:45,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:30:45,293 INFO L495 AbstractCegarLoop]: Abstraction has 160 states and 211 transitions. [2023-12-15 21:30:45,293 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-15 21:30:45,293 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 211 transitions. [2023-12-15 21:30:45,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2023-12-15 21:30:45,294 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:30:45,294 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:30:45,302 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-12-15 21:30:45,500 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-12-15 21:30:45,500 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:30:45,500 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:30:45,500 INFO L85 PathProgramCache]: Analyzing trace with hash 1666404159, now seen corresponding path program 1 times [2023-12-15 21:30:45,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:30:45,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2036313439] [2023-12-15 21:30:45,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:30:45,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:30:45,518 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:30:45,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2032510643] [2023-12-15 21:30:45,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:30:45,519 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:30:45,519 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:30:45,520 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:30:45,524 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-12-15 21:30:45,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:30:45,676 INFO L262 TraceCheckSpWp]: Trace formula consists of 478 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-15 21:30:45,679 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:30:45,691 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-12-15 21:30:45,691 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:30:45,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:30:45,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2036313439] [2023-12-15 21:30:45,691 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:30:45,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2032510643] [2023-12-15 21:30:45,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2032510643] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:30:45,691 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:30:45,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-15 21:30:45,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474242548] [2023-12-15 21:30:45,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:30:45,692 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-15 21:30:45,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:30:45,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-15 21:30:45,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-15 21:30:45,692 INFO L87 Difference]: Start difference. First operand 160 states and 211 transitions. Second operand has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-15 21:30:45,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:30:45,722 INFO L93 Difference]: Finished difference Result 283 states and 367 transitions. [2023-12-15 21:30:45,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-15 21:30:45,723 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 150 [2023-12-15 21:30:45,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:30:45,724 INFO L225 Difference]: With dead ends: 283 [2023-12-15 21:30:45,724 INFO L226 Difference]: Without dead ends: 168 [2023-12-15 21:30:45,725 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-15 21:30:45,725 INFO L413 NwaCegarLoop]: 111 mSDtfsCounter, 18 mSDsluCounter, 324 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 435 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 21:30:45,725 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 435 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 21:30:45,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2023-12-15 21:30:45,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 163. [2023-12-15 21:30:45,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 119 states have (on average 1.1260504201680672) internal successors, (134), 120 states have internal predecessors, (134), 40 states have call successors, (40), 3 states have call predecessors, (40), 3 states have return successors, (40), 39 states have call predecessors, (40), 40 states have call successors, (40) [2023-12-15 21:30:45,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 214 transitions. [2023-12-15 21:30:45,732 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 214 transitions. Word has length 150 [2023-12-15 21:30:45,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:30:45,732 INFO L495 AbstractCegarLoop]: Abstraction has 163 states and 214 transitions. [2023-12-15 21:30:45,732 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-15 21:30:45,732 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 214 transitions. [2023-12-15 21:30:45,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-12-15 21:30:45,733 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:30:45,733 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:30:45,740 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-12-15 21:30:45,938 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-12-15 21:30:45,938 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:30:45,939 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:30:45,939 INFO L85 PathProgramCache]: Analyzing trace with hash -1309994932, now seen corresponding path program 1 times [2023-12-15 21:30:45,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:30:45,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161889117] [2023-12-15 21:30:45,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:30:45,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:30:45,955 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:30:45,955 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [368236643] [2023-12-15 21:30:45,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:30:45,955 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:30:45,955 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:30:45,956 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:30:45,980 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-12-15 21:30:46,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:30:46,113 INFO L262 TraceCheckSpWp]: Trace formula consists of 484 conjuncts, 23 conjunts are in the unsatisfiable core [2023-12-15 21:30:46,115 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:30:46,131 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 17 treesize of output 17 [2023-12-15 21:30:46,160 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-15 21:30:46,160 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 58 treesize of output 28 [2023-12-15 21:30:46,180 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 703 trivial. 0 not checked. [2023-12-15 21:30:46,180 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 21:30:46,279 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-12-15 21:30:46,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:30:46,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161889117] [2023-12-15 21:30:46,279 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:30:46,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [368236643] [2023-12-15 21:30:46,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [368236643] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-15 21:30:46,280 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 21:30:46,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 12 [2023-12-15 21:30:46,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737928747] [2023-12-15 21:30:46,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:30:46,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 21:30:46,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:30:46,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 21:30:46,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2023-12-15 21:30:46,281 INFO L87 Difference]: Start difference. First operand 163 states and 214 transitions. Second operand has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-15 21:30:46,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:30:46,500 INFO L93 Difference]: Finished difference Result 371 states and 471 transitions. [2023-12-15 21:30:46,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-15 21:30:46,500 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 151 [2023-12-15 21:30:46,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:30:46,501 INFO L225 Difference]: With dead ends: 371 [2023-12-15 21:30:46,501 INFO L226 Difference]: Without dead ends: 253 [2023-12-15 21:30:46,502 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 309 GetRequests, 290 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=91, Invalid=329, Unknown=0, NotChecked=0, Total=420 [2023-12-15 21:30:46,502 INFO L413 NwaCegarLoop]: 171 mSDtfsCounter, 153 mSDsluCounter, 667 mSDsCounter, 0 mSdLazyCounter, 186 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 838 SdHoareTripleChecker+Invalid, 191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 21:30:46,502 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [153 Valid, 838 Invalid, 191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 186 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 21:30:46,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2023-12-15 21:30:46,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 164. [2023-12-15 21:30:46,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 120 states have (on average 1.125) internal successors, (135), 121 states have internal predecessors, (135), 40 states have call successors, (40), 3 states have call predecessors, (40), 3 states have return successors, (40), 39 states have call predecessors, (40), 40 states have call successors, (40) [2023-12-15 21:30:46,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 215 transitions. [2023-12-15 21:30:46,510 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 215 transitions. Word has length 151 [2023-12-15 21:30:46,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:30:46,510 INFO L495 AbstractCegarLoop]: Abstraction has 164 states and 215 transitions. [2023-12-15 21:30:46,510 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-15 21:30:46,510 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 215 transitions. [2023-12-15 21:30:46,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2023-12-15 21:30:46,511 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:30:46,511 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:30:46,516 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2023-12-15 21:30:46,719 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-12-15 21:30:46,720 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:30:46,720 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:30:46,720 INFO L85 PathProgramCache]: Analyzing trace with hash -1769092070, now seen corresponding path program 1 times [2023-12-15 21:30:46,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:30:46,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1823307997] [2023-12-15 21:30:46,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:30:46,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:30:46,736 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:30:46,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [70747813] [2023-12-15 21:30:46,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:30:46,737 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:30:46,737 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:30:46,738 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:30:46,740 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-12-15 21:30:46,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:30:46,962 INFO L262 TraceCheckSpWp]: Trace formula consists of 493 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-15 21:30:46,965 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:30:47,074 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-15 21:30:47,074 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 76 treesize of output 32 [2023-12-15 21:30:47,092 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-12-15 21:30:47,092 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:30:47,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:30:47,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1823307997] [2023-12-15 21:30:47,093 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:30:47,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [70747813] [2023-12-15 21:30:47,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [70747813] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:30:47,093 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:30:47,093 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-15 21:30:47,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134431265] [2023-12-15 21:30:47,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:30:47,093 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-15 21:30:47,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:30:47,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-15 21:30:47,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-15 21:30:47,094 INFO L87 Difference]: Start difference. First operand 164 states and 215 transitions. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-15 21:30:47,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:30:47,300 INFO L93 Difference]: Finished difference Result 367 states and 461 transitions. [2023-12-15 21:30:47,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-15 21:30:47,304 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 152 [2023-12-15 21:30:47,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:30:47,305 INFO L225 Difference]: With dead ends: 367 [2023-12-15 21:30:47,305 INFO L226 Difference]: Without dead ends: 248 [2023-12-15 21:30:47,306 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-15 21:30:47,306 INFO L413 NwaCegarLoop]: 100 mSDtfsCounter, 71 mSDsluCounter, 258 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 358 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-15 21:30:47,306 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 358 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-15 21:30:47,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2023-12-15 21:30:47,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 154. [2023-12-15 21:30:47,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 131 states have (on average 1.1450381679389312) internal successors, (150), 131 states have internal predecessors, (150), 20 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-12-15 21:30:47,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 190 transitions. [2023-12-15 21:30:47,313 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 190 transitions. Word has length 152 [2023-12-15 21:30:47,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:30:47,313 INFO L495 AbstractCegarLoop]: Abstraction has 154 states and 190 transitions. [2023-12-15 21:30:47,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-15 21:30:47,313 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 190 transitions. [2023-12-15 21:30:47,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2023-12-15 21:30:47,314 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:30:47,314 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:30:47,327 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-12-15 21:30:47,519 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-12-15 21:30:47,520 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:30:47,520 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:30:47,520 INFO L85 PathProgramCache]: Analyzing trace with hash -1503709583, now seen corresponding path program 1 times [2023-12-15 21:30:47,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:30:47,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [798870595] [2023-12-15 21:30:47,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:30:47,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:30:47,550 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:30:47,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [670103619] [2023-12-15 21:30:47,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:30:47,550 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:30:47,550 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:30:47,564 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:30:47,573 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-12-15 21:30:47,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:30:47,734 INFO L262 TraceCheckSpWp]: Trace formula consists of 487 conjuncts, 25 conjunts are in the unsatisfiable core [2023-12-15 21:30:47,736 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:30:47,747 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 17 treesize of output 17 [2023-12-15 21:30:47,776 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-15 21:30:47,776 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 58 treesize of output 28 [2023-12-15 21:30:47,799 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 703 trivial. 0 not checked. [2023-12-15 21:30:47,799 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 21:30:47,892 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-12-15 21:30:47,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:30:47,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [798870595] [2023-12-15 21:30:47,892 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:30:47,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [670103619] [2023-12-15 21:30:47,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [670103619] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-15 21:30:47,892 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 21:30:47,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10] total 14 [2023-12-15 21:30:47,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781976494] [2023-12-15 21:30:47,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:30:47,893 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-15 21:30:47,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:30:47,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-15 21:30:47,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2023-12-15 21:30:47,893 INFO L87 Difference]: Start difference. First operand 154 states and 190 transitions. Second operand has 8 states, 8 states have (on average 7.0) internal successors, (56), 8 states have internal predecessors, (56), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-15 21:30:48,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:30:48,192 INFO L93 Difference]: Finished difference Result 403 states and 491 transitions. [2023-12-15 21:30:48,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-15 21:30:48,193 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.0) internal successors, (56), 8 states have internal predecessors, (56), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 153 [2023-12-15 21:30:48,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:30:48,194 INFO L225 Difference]: With dead ends: 403 [2023-12-15 21:30:48,194 INFO L226 Difference]: Without dead ends: 250 [2023-12-15 21:30:48,194 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 316 GetRequests, 292 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=138, Invalid=512, Unknown=0, NotChecked=0, Total=650 [2023-12-15 21:30:48,195 INFO L413 NwaCegarLoop]: 177 mSDtfsCounter, 148 mSDsluCounter, 805 mSDsCounter, 0 mSdLazyCounter, 227 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 982 SdHoareTripleChecker+Invalid, 233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 227 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 21:30:48,195 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [148 Valid, 982 Invalid, 233 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 227 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 21:30:48,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2023-12-15 21:30:48,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 144. [2023-12-15 21:30:48,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 121 states have (on average 1.140495867768595) internal successors, (138), 121 states have internal predecessors, (138), 20 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-12-15 21:30:48,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 178 transitions. [2023-12-15 21:30:48,201 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 178 transitions. Word has length 153 [2023-12-15 21:30:48,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:30:48,201 INFO L495 AbstractCegarLoop]: Abstraction has 144 states and 178 transitions. [2023-12-15 21:30:48,201 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.0) internal successors, (56), 8 states have internal predecessors, (56), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-15 21:30:48,201 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 178 transitions. [2023-12-15 21:30:48,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2023-12-15 21:30:48,202 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:30:48,202 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:30:48,210 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-12-15 21:30:48,407 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:30:48,408 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:30:48,408 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:30:48,408 INFO L85 PathProgramCache]: Analyzing trace with hash -277808769, now seen corresponding path program 1 times [2023-12-15 21:30:48,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:30:48,408 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1535196853] [2023-12-15 21:30:48,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:30:48,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:30:48,424 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:30:48,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1650235584] [2023-12-15 21:30:48,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:30:48,424 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:30:48,425 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:30:48,432 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:30:48,435 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-12-15 21:30:48,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:30:48,677 INFO L262 TraceCheckSpWp]: Trace formula consists of 508 conjuncts, 86 conjunts are in the unsatisfiable core [2023-12-15 21:30:48,685 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:30:48,883 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2023-12-15 21:30:48,930 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2023-12-15 21:30:49,021 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2023-12-15 21:30:49,376 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 18 [2023-12-15 21:30:49,795 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-15 21:30:49,795 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 64 treesize of output 53 [2023-12-15 21:30:50,303 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-15 21:30:50,303 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 75 treesize of output 43 [2023-12-15 21:30:50,415 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 313 proven. 12 refuted. 0 times theorem prover too weak. 435 trivial. 0 not checked. [2023-12-15 21:30:50,415 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 21:30:50,912 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-12-15 21:30:50,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:30:50,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1535196853] [2023-12-15 21:30:50,913 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:30:50,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1650235584] [2023-12-15 21:30:50,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1650235584] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-15 21:30:50,913 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 21:30:50,913 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [29] total 39 [2023-12-15 21:30:50,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189636070] [2023-12-15 21:30:50,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:30:50,913 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-15 21:30:50,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:30:50,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-15 21:30:50,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=196, Invalid=1286, Unknown=0, NotChecked=0, Total=1482 [2023-12-15 21:30:50,914 INFO L87 Difference]: Start difference. First operand 144 states and 178 transitions. Second operand has 13 states, 13 states have (on average 4.384615384615385) internal successors, (57), 13 states have internal predecessors, (57), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-15 21:30:51,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:30:51,804 INFO L93 Difference]: Finished difference Result 396 states and 482 transitions. [2023-12-15 21:30:51,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-15 21:30:51,805 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.384615384615385) internal successors, (57), 13 states have internal predecessors, (57), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 154 [2023-12-15 21:30:51,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:30:51,806 INFO L225 Difference]: With dead ends: 396 [2023-12-15 21:30:51,806 INFO L226 Difference]: Without dead ends: 253 [2023-12-15 21:30:51,807 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 317 GetRequests, 269 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 702 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=308, Invalid=2142, Unknown=0, NotChecked=0, Total=2450 [2023-12-15 21:30:51,807 INFO L413 NwaCegarLoop]: 157 mSDtfsCounter, 181 mSDsluCounter, 1086 mSDsCounter, 0 mSdLazyCounter, 671 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 181 SdHoareTripleChecker+Valid, 1243 SdHoareTripleChecker+Invalid, 707 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 671 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-15 21:30:51,807 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [181 Valid, 1243 Invalid, 707 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 671 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-15 21:30:51,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2023-12-15 21:30:51,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 232. [2023-12-15 21:30:51,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232 states, 194 states have (on average 1.1237113402061856) internal successors, (218), 195 states have internal predecessors, (218), 33 states have call successors, (33), 4 states have call predecessors, (33), 4 states have return successors, (33), 32 states have call predecessors, (33), 33 states have call successors, (33) [2023-12-15 21:30:51,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 284 transitions. [2023-12-15 21:30:51,820 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 284 transitions. Word has length 154 [2023-12-15 21:30:51,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:30:51,820 INFO L495 AbstractCegarLoop]: Abstraction has 232 states and 284 transitions. [2023-12-15 21:30:51,820 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.384615384615385) internal successors, (57), 13 states have internal predecessors, (57), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-15 21:30:51,820 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 284 transitions. [2023-12-15 21:30:51,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2023-12-15 21:30:51,821 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:30:51,821 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:30:51,828 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-12-15 21:30:52,028 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:30:52,028 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:30:52,028 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:30:52,028 INFO L85 PathProgramCache]: Analyzing trace with hash -19643331, now seen corresponding path program 1 times [2023-12-15 21:30:52,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:30:52,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058290604] [2023-12-15 21:30:52,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:30:52,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:30:52,048 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:30:52,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1409722905] [2023-12-15 21:30:52,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:30:52,049 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:30:52,049 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:30:52,050 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:30:52,052 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-12-15 21:30:52,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:30:52,232 INFO L262 TraceCheckSpWp]: Trace formula consists of 508 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-15 21:30:52,239 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:30:52,257 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-15 21:30:52,258 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 1 case distinctions, treesize of input 37 treesize of output 28 [2023-12-15 21:30:52,283 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-15 21:30:52,284 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 40 treesize of output 16 [2023-12-15 21:30:52,290 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-12-15 21:30:52,290 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:30:52,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:30:52,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058290604] [2023-12-15 21:30:52,291 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:30:52,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1409722905] [2023-12-15 21:30:52,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1409722905] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:30:52,291 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:30:52,291 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-15 21:30:52,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775230515] [2023-12-15 21:30:52,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:30:52,292 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-15 21:30:52,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:30:52,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-15 21:30:52,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-15 21:30:52,292 INFO L87 Difference]: Start difference. First operand 232 states and 284 transitions. Second operand has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-15 21:30:52,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:30:52,413 INFO L93 Difference]: Finished difference Result 486 states and 591 transitions. [2023-12-15 21:30:52,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-15 21:30:52,414 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 154 [2023-12-15 21:30:52,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:30:52,415 INFO L225 Difference]: With dead ends: 486 [2023-12-15 21:30:52,415 INFO L226 Difference]: Without dead ends: 255 [2023-12-15 21:30:52,415 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-15 21:30:52,416 INFO L413 NwaCegarLoop]: 194 mSDtfsCounter, 94 mSDsluCounter, 449 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 643 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 21:30:52,417 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 643 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 21:30:52,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2023-12-15 21:30:52,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 232. [2023-12-15 21:30:52,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232 states, 190 states have (on average 1.1105263157894736) internal successors, (211), 191 states have internal predecessors, (211), 36 states have call successors, (36), 5 states have call predecessors, (36), 5 states have return successors, (36), 35 states have call predecessors, (36), 36 states have call successors, (36) [2023-12-15 21:30:52,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 283 transitions. [2023-12-15 21:30:52,427 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 283 transitions. Word has length 154 [2023-12-15 21:30:52,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:30:52,427 INFO L495 AbstractCegarLoop]: Abstraction has 232 states and 283 transitions. [2023-12-15 21:30:52,428 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-15 21:30:52,428 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 283 transitions. [2023-12-15 21:30:52,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2023-12-15 21:30:52,428 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:30:52,428 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:30:52,452 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2023-12-15 21:30:52,634 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:30:52,635 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:30:52,635 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:30:52,635 INFO L85 PathProgramCache]: Analyzing trace with hash 1108394625, now seen corresponding path program 1 times [2023-12-15 21:30:52,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:30:52,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236618772] [2023-12-15 21:30:52,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:30:52,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:30:52,653 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:30:52,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [398729067] [2023-12-15 21:30:52,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:30:52,654 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:30:52,654 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:30:52,655 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:30:52,657 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-12-15 21:30:52,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:30:52,830 INFO L262 TraceCheckSpWp]: Trace formula consists of 508 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-15 21:30:52,833 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:30:52,854 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-15 21:30:52,854 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 1 case distinctions, treesize of input 35 treesize of output 26 [2023-12-15 21:30:52,880 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-15 21:30:52,880 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 38 treesize of output 14 [2023-12-15 21:30:52,886 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-12-15 21:30:52,886 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:30:52,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:30:52,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1236618772] [2023-12-15 21:30:52,886 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:30:52,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [398729067] [2023-12-15 21:30:52,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [398729067] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:30:52,886 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:30:52,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-15 21:30:52,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486480187] [2023-12-15 21:30:52,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:30:52,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-15 21:30:52,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:30:52,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-15 21:30:52,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-15 21:30:52,887 INFO L87 Difference]: Start difference. First operand 232 states and 283 transitions. Second operand has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-15 21:30:53,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:30:53,012 INFO L93 Difference]: Finished difference Result 519 states and 635 transitions. [2023-12-15 21:30:53,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-15 21:30:53,012 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 154 [2023-12-15 21:30:53,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:30:53,013 INFO L225 Difference]: With dead ends: 519 [2023-12-15 21:30:53,013 INFO L226 Difference]: Without dead ends: 288 [2023-12-15 21:30:53,014 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-15 21:30:53,014 INFO L413 NwaCegarLoop]: 145 mSDtfsCounter, 91 mSDsluCounter, 334 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 479 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 21:30:53,014 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 479 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 21:30:53,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2023-12-15 21:30:53,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 282. [2023-12-15 21:30:53,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 282 states, 222 states have (on average 1.09009009009009) internal successors, (242), 224 states have internal predecessors, (242), 52 states have call successors, (52), 7 states have call predecessors, (52), 7 states have return successors, (52), 50 states have call predecessors, (52), 52 states have call successors, (52) [2023-12-15 21:30:53,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 346 transitions. [2023-12-15 21:30:53,029 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 346 transitions. Word has length 154 [2023-12-15 21:30:53,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:30:53,029 INFO L495 AbstractCegarLoop]: Abstraction has 282 states and 346 transitions. [2023-12-15 21:30:53,030 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-15 21:30:53,030 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 346 transitions. [2023-12-15 21:30:53,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2023-12-15 21:30:53,030 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:30:53,030 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:30:53,037 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2023-12-15 21:30:53,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:30:53,237 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:30:53,237 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:30:53,237 INFO L85 PathProgramCache]: Analyzing trace with hash 1366560063, now seen corresponding path program 1 times [2023-12-15 21:30:53,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:30:53,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525006746] [2023-12-15 21:30:53,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:30:53,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:30:53,253 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:30:53,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1787297519] [2023-12-15 21:30:53,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:30:53,254 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:30:53,254 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:30:53,255 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:30:53,266 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-12-15 21:30:53,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:30:53,515 INFO L262 TraceCheckSpWp]: Trace formula consists of 508 conjuncts, 58 conjunts are in the unsatisfiable core [2023-12-15 21:30:53,518 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:30:53,782 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 63 treesize of output 49 [2023-12-15 21:30:54,096 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-15 21:30:54,096 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 76 treesize of output 44 [2023-12-15 21:30:54,197 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 313 proven. 6 refuted. 0 times theorem prover too weak. 441 trivial. 0 not checked. [2023-12-15 21:30:54,197 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 21:30:54,590 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-12-15 21:30:54,590 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:30:54,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525006746] [2023-12-15 21:30:54,591 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:30:54,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1787297519] [2023-12-15 21:30:54,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1787297519] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-15 21:30:54,591 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 21:30:54,591 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [25] total 34 [2023-12-15 21:30:54,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534521362] [2023-12-15 21:30:54,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:30:54,591 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-15 21:30:54,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:30:54,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-15 21:30:54,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=982, Unknown=0, NotChecked=0, Total=1122 [2023-12-15 21:30:54,592 INFO L87 Difference]: Start difference. First operand 282 states and 346 transitions. Second operand has 13 states, 13 states have (on average 4.384615384615385) internal successors, (57), 13 states have internal predecessors, (57), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-15 21:30:55,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:30:55,320 INFO L93 Difference]: Finished difference Result 603 states and 742 transitions. [2023-12-15 21:30:55,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-15 21:30:55,320 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.384615384615385) internal successors, (57), 13 states have internal predecessors, (57), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 154 [2023-12-15 21:30:55,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:30:55,320 INFO L225 Difference]: With dead ends: 603 [2023-12-15 21:30:55,320 INFO L226 Difference]: Without dead ends: 0 [2023-12-15 21:30:55,322 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 316 GetRequests, 274 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 480 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=240, Invalid=1652, Unknown=0, NotChecked=0, Total=1892 [2023-12-15 21:30:55,322 INFO L413 NwaCegarLoop]: 155 mSDtfsCounter, 172 mSDsluCounter, 1041 mSDsCounter, 0 mSdLazyCounter, 669 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 172 SdHoareTripleChecker+Valid, 1196 SdHoareTripleChecker+Invalid, 732 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 669 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-15 21:30:55,322 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [172 Valid, 1196 Invalid, 732 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 669 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-15 21:30:55,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-12-15 21:30:55,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-12-15 21:30:55,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 21:30:55,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-12-15 21:30:55,323 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 154 [2023-12-15 21:30:55,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:30:55,323 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-12-15 21:30:55,323 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.384615384615385) internal successors, (57), 13 states have internal predecessors, (57), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-15 21:30:55,323 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-12-15 21:30:55,324 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-12-15 21:30:55,326 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-15 21:30:55,344 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2023-12-15 21:30:55,533 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:30:55,535 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-12-15 21:30:56,461 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(line 20) the Hoare annotation is: true [2023-12-15 21:30:56,461 INFO L899 garLoopResultBuilder]: For program point L20(line 20) no Hoare annotation was computed. [2023-12-15 21:30:56,462 INFO L899 garLoopResultBuilder]: For program point L20-2(line 20) no Hoare annotation was computed. [2023-12-15 21:30:56,462 INFO L899 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(line 20) no Hoare annotation was computed. [2023-12-15 21:30:56,462 INFO L899 garLoopResultBuilder]: For program point L60(line 60) no Hoare annotation was computed. [2023-12-15 21:30:56,462 INFO L899 garLoopResultBuilder]: For program point L60-2(line 60) no Hoare annotation was computed. [2023-12-15 21:30:56,462 INFO L902 garLoopResultBuilder]: At program point L85(line 85) the Hoare annotation is: true [2023-12-15 21:30:56,462 INFO L899 garLoopResultBuilder]: For program point L85-1(line 85) no Hoare annotation was computed. [2023-12-15 21:30:56,462 INFO L899 garLoopResultBuilder]: For program point L19(line 19) no Hoare annotation was computed. [2023-12-15 21:30:56,462 INFO L899 garLoopResultBuilder]: For program point L19-1(line 19) no Hoare annotation was computed. [2023-12-15 21:30:56,462 INFO L899 garLoopResultBuilder]: For program point L19-3(line 19) no Hoare annotation was computed. [2023-12-15 21:30:56,462 INFO L895 garLoopResultBuilder]: At program point L77(line 77) the Hoare annotation is: (let ((.cse3 (select |#memory_int#4| |~#unsigned_char_Array_0~0.base|))) (let ((.cse0 (mod (select .cse3 (+ |~#unsigned_char_Array_0~0.offset| 2)) 256)) (.cse2 (mod (select .cse3 |~#unsigned_char_Array_0~0.offset|) 256))) (or (let ((.cse1 (select |#memory_int#3| |~#signed_short_int_Array_0~0.base|))) (and (= (+ (select (select |#memory_int#2| |~#signed_long_int_Array_0~0.base|) |~#signed_long_int_Array_0~0.offset|) 4) 0) (= .cse0 (select .cse1 (+ 8 |~#signed_short_int_Array_0~0.offset|))) (= .cse2 (select .cse1 |~#signed_short_int_Array_0~0.offset|)))) (< (* (mod 2 (mod (select .cse3 (+ |~#unsigned_char_Array_0~0.offset| 3)) 256)) (div .cse0 (mod (select .cse3 (+ |~#unsigned_char_Array_0~0.offset| 1)) 256))) .cse2)))) [2023-12-15 21:30:56,462 INFO L899 garLoopResultBuilder]: For program point L77-1(line 77) no Hoare annotation was computed. [2023-12-15 21:30:56,462 INFO L899 garLoopResultBuilder]: For program point L44(lines 44 54) no Hoare annotation was computed. [2023-12-15 21:30:56,462 INFO L899 garLoopResultBuilder]: For program point L44-1(lines 44 54) no Hoare annotation was computed. [2023-12-15 21:30:56,462 INFO L899 garLoopResultBuilder]: For program point L102(line 102) no Hoare annotation was computed. [2023-12-15 21:30:56,462 INFO L895 garLoopResultBuilder]: At program point L69(line 69) the Hoare annotation is: (let ((.cse3 (select |#memory_int#4| |~#unsigned_char_Array_0~0.base|))) (let ((.cse0 (mod (select .cse3 (+ |~#unsigned_char_Array_0~0.offset| 2)) 256)) (.cse2 (mod (select .cse3 |~#unsigned_char_Array_0~0.offset|) 256))) (or (let ((.cse1 (select |#memory_int#3| |~#signed_short_int_Array_0~0.base|))) (and (= (+ (select (select |#memory_int#2| |~#signed_long_int_Array_0~0.base|) |~#signed_long_int_Array_0~0.offset|) 4) 0) (= .cse0 (select .cse1 (+ 8 |~#signed_short_int_Array_0~0.offset|))) (= .cse2 (select .cse1 |~#signed_short_int_Array_0~0.offset|)))) (< (* (mod 2 (mod (select .cse3 (+ |~#unsigned_char_Array_0~0.offset| 3)) 256)) (div .cse0 (mod (select .cse3 (+ |~#unsigned_char_Array_0~0.offset| 1)) 256))) .cse2)))) [2023-12-15 21:30:56,462 INFO L899 garLoopResultBuilder]: For program point L102-1(line 102) no Hoare annotation was computed. [2023-12-15 21:30:56,462 INFO L899 garLoopResultBuilder]: For program point L69-1(line 69) no Hoare annotation was computed. [2023-12-15 21:30:56,462 INFO L899 garLoopResultBuilder]: For program point L102-3(line 102) no Hoare annotation was computed. [2023-12-15 21:30:56,463 INFO L899 garLoopResultBuilder]: For program point L102-5(line 102) no Hoare annotation was computed. [2023-12-15 21:30:56,463 INFO L899 garLoopResultBuilder]: For program point L102-6(line 102) no Hoare annotation was computed. [2023-12-15 21:30:56,463 INFO L899 garLoopResultBuilder]: For program point L102-7(line 102) no Hoare annotation was computed. [2023-12-15 21:30:56,463 INFO L902 garLoopResultBuilder]: At program point L94(line 94) the Hoare annotation is: true [2023-12-15 21:30:56,463 INFO L899 garLoopResultBuilder]: For program point L102-8(line 102) no Hoare annotation was computed. [2023-12-15 21:30:56,463 INFO L899 garLoopResultBuilder]: For program point L94-1(line 94) no Hoare annotation was computed. [2023-12-15 21:30:56,463 INFO L899 garLoopResultBuilder]: For program point L102-9(line 102) no Hoare annotation was computed. [2023-12-15 21:30:56,463 INFO L899 garLoopResultBuilder]: For program point L102-11(line 102) no Hoare annotation was computed. [2023-12-15 21:30:56,463 INFO L899 garLoopResultBuilder]: For program point L102-13(line 102) no Hoare annotation was computed. [2023-12-15 21:30:56,463 INFO L899 garLoopResultBuilder]: For program point L102-15(line 102) no Hoare annotation was computed. [2023-12-15 21:30:56,463 INFO L899 garLoopResultBuilder]: For program point L102-17(line 102) no Hoare annotation was computed. [2023-12-15 21:30:56,463 INFO L899 garLoopResultBuilder]: For program point L102-18(line 102) no Hoare annotation was computed. [2023-12-15 21:30:56,463 INFO L899 garLoopResultBuilder]: For program point L102-19(line 102) no Hoare annotation was computed. [2023-12-15 21:30:56,463 INFO L899 garLoopResultBuilder]: For program point L102-20(line 102) no Hoare annotation was computed. [2023-12-15 21:30:56,463 INFO L899 garLoopResultBuilder]: For program point L102-22(line 102) no Hoare annotation was computed. [2023-12-15 21:30:56,463 INFO L895 garLoopResultBuilder]: At program point L78(line 78) the Hoare annotation is: (let ((.cse3 (select |#memory_int#4| |~#unsigned_char_Array_0~0.base|))) (let ((.cse0 (mod (select .cse3 (+ |~#unsigned_char_Array_0~0.offset| 2)) 256)) (.cse2 (mod (select .cse3 |~#unsigned_char_Array_0~0.offset|) 256))) (or (let ((.cse1 (select |#memory_int#3| |~#signed_short_int_Array_0~0.base|))) (and (= (+ (select (select |#memory_int#2| |~#signed_long_int_Array_0~0.base|) |~#signed_long_int_Array_0~0.offset|) 4) 0) (= .cse0 (select .cse1 (+ 8 |~#signed_short_int_Array_0~0.offset|))) (= .cse2 (select .cse1 |~#signed_short_int_Array_0~0.offset|)))) (< (* (mod 2 (mod (select .cse3 (+ |~#unsigned_char_Array_0~0.offset| 3)) 256)) (div .cse0 (mod (select .cse3 (+ |~#unsigned_char_Array_0~0.offset| 1)) 256))) .cse2)))) [2023-12-15 21:30:56,463 INFO L899 garLoopResultBuilder]: For program point L102-24(line 102) no Hoare annotation was computed. [2023-12-15 21:30:56,463 INFO L899 garLoopResultBuilder]: For program point L78-1(line 78) no Hoare annotation was computed. [2023-12-15 21:30:56,463 INFO L899 garLoopResultBuilder]: For program point L45(lines 45 53) no Hoare annotation was computed. [2023-12-15 21:30:56,463 INFO L899 garLoopResultBuilder]: For program point L102-26(line 102) no Hoare annotation was computed. [2023-12-15 21:30:56,463 INFO L899 garLoopResultBuilder]: For program point L102-27(line 102) no Hoare annotation was computed. [2023-12-15 21:30:56,463 INFO L899 garLoopResultBuilder]: For program point L102-29(line 102) no Hoare annotation was computed. [2023-12-15 21:30:56,463 INFO L899 garLoopResultBuilder]: For program point L102-30(line 102) no Hoare annotation was computed. [2023-12-15 21:30:56,463 INFO L899 garLoopResultBuilder]: For program point L102-32(line 102) no Hoare annotation was computed. [2023-12-15 21:30:56,464 INFO L899 garLoopResultBuilder]: For program point L102-33(line 102) no Hoare annotation was computed. [2023-12-15 21:30:56,464 INFO L899 garLoopResultBuilder]: For program point L102-35(line 102) no Hoare annotation was computed. [2023-12-15 21:30:56,464 INFO L902 garLoopResultBuilder]: At program point L95(line 95) the Hoare annotation is: true [2023-12-15 21:30:56,464 INFO L899 garLoopResultBuilder]: For program point L95-1(line 95) no Hoare annotation was computed. [2023-12-15 21:30:56,464 INFO L902 garLoopResultBuilder]: At program point L87(line 87) the Hoare annotation is: true [2023-12-15 21:30:56,464 INFO L899 garLoopResultBuilder]: For program point L87-1(line 87) no Hoare annotation was computed. [2023-12-15 21:30:56,464 INFO L899 garLoopResultBuilder]: For program point L46(lines 46 50) no Hoare annotation was computed. [2023-12-15 21:30:56,464 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-12-15 21:30:56,464 INFO L895 garLoopResultBuilder]: At program point L71(line 71) the Hoare annotation is: (let ((.cse3 (select |#memory_int#4| |~#unsigned_char_Array_0~0.base|))) (let ((.cse0 (mod (select .cse3 (+ |~#unsigned_char_Array_0~0.offset| 2)) 256)) (.cse2 (mod (select .cse3 |~#unsigned_char_Array_0~0.offset|) 256))) (or (let ((.cse1 (select |#memory_int#3| |~#signed_short_int_Array_0~0.base|))) (and (= (+ (select (select |#memory_int#2| |~#signed_long_int_Array_0~0.base|) |~#signed_long_int_Array_0~0.offset|) 4) 0) (= .cse0 (select .cse1 (+ 8 |~#signed_short_int_Array_0~0.offset|))) (= .cse2 (select .cse1 |~#signed_short_int_Array_0~0.offset|)))) (< (* (mod 2 (mod (select .cse3 (+ |~#unsigned_char_Array_0~0.offset| 3)) 256)) (div .cse0 (mod (select .cse3 (+ |~#unsigned_char_Array_0~0.offset| 1)) 256))) .cse2)))) [2023-12-15 21:30:56,464 INFO L899 garLoopResultBuilder]: For program point L71-1(line 71) no Hoare annotation was computed. [2023-12-15 21:30:56,464 INFO L902 garLoopResultBuilder]: At program point L88(line 88) the Hoare annotation is: true [2023-12-15 21:30:56,464 INFO L899 garLoopResultBuilder]: For program point L88-1(line 88) no Hoare annotation was computed. [2023-12-15 21:30:56,464 INFO L899 garLoopResultBuilder]: For program point L55(lines 55 57) no Hoare annotation was computed. [2023-12-15 21:30:56,464 INFO L899 garLoopResultBuilder]: For program point L55-2(lines 55 57) no Hoare annotation was computed. [2023-12-15 21:30:56,464 INFO L902 garLoopResultBuilder]: At program point L80(line 80) the Hoare annotation is: true [2023-12-15 21:30:56,464 INFO L899 garLoopResultBuilder]: For program point L80-1(line 80) no Hoare annotation was computed. [2023-12-15 21:30:56,464 INFO L895 garLoopResultBuilder]: At program point L72(line 72) the Hoare annotation is: (let ((.cse3 (select |#memory_int#4| |~#unsigned_char_Array_0~0.base|))) (let ((.cse0 (mod (select .cse3 (+ |~#unsigned_char_Array_0~0.offset| 2)) 256)) (.cse2 (mod (select .cse3 |~#unsigned_char_Array_0~0.offset|) 256))) (or (let ((.cse1 (select |#memory_int#3| |~#signed_short_int_Array_0~0.base|))) (and (= (+ (select (select |#memory_int#2| |~#signed_long_int_Array_0~0.base|) |~#signed_long_int_Array_0~0.offset|) 4) 0) (= .cse0 (select .cse1 (+ 8 |~#signed_short_int_Array_0~0.offset|))) (= .cse2 (select .cse1 |~#signed_short_int_Array_0~0.offset|)))) (< (* (mod 2 (mod (select .cse3 (+ |~#unsigned_char_Array_0~0.offset| 3)) 256)) (div .cse0 (mod (select .cse3 (+ |~#unsigned_char_Array_0~0.offset| 1)) 256))) .cse2)))) [2023-12-15 21:30:56,464 INFO L899 garLoopResultBuilder]: For program point L72-1(line 72) no Hoare annotation was computed. [2023-12-15 21:30:56,464 INFO L902 garLoopResultBuilder]: At program point L89(line 89) the Hoare annotation is: true [2023-12-15 21:30:56,464 INFO L899 garLoopResultBuilder]: For program point L89-1(line 89) no Hoare annotation was computed. [2023-12-15 21:30:56,464 INFO L899 garLoopResultBuilder]: For program point L56(line 56) no Hoare annotation was computed. [2023-12-15 21:30:56,465 INFO L899 garLoopResultBuilder]: For program point L56-2(line 56) no Hoare annotation was computed. [2023-12-15 21:30:56,465 INFO L902 garLoopResultBuilder]: At program point L81(line 81) the Hoare annotation is: true [2023-12-15 21:30:56,465 INFO L899 garLoopResultBuilder]: For program point L81-1(line 81) no Hoare annotation was computed. [2023-12-15 21:30:56,465 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2023-12-15 21:30:56,465 INFO L895 garLoopResultBuilder]: At program point L74(line 74) the Hoare annotation is: (let ((.cse3 (select |#memory_int#4| |~#unsigned_char_Array_0~0.base|))) (let ((.cse0 (mod (select .cse3 (+ |~#unsigned_char_Array_0~0.offset| 2)) 256)) (.cse2 (mod (select .cse3 |~#unsigned_char_Array_0~0.offset|) 256))) (or (let ((.cse1 (select |#memory_int#3| |~#signed_short_int_Array_0~0.base|))) (and (= (+ (select (select |#memory_int#2| |~#signed_long_int_Array_0~0.base|) |~#signed_long_int_Array_0~0.offset|) 4) 0) (= .cse0 (select .cse1 (+ 8 |~#signed_short_int_Array_0~0.offset|))) (= .cse2 (select .cse1 |~#signed_short_int_Array_0~0.offset|)))) (< (* (mod 2 (mod (select .cse3 (+ |~#unsigned_char_Array_0~0.offset| 3)) 256)) (div .cse0 (mod (select .cse3 (+ |~#unsigned_char_Array_0~0.offset| 1)) 256))) .cse2)))) [2023-12-15 21:30:56,465 INFO L899 garLoopResultBuilder]: For program point L74-1(line 74) no Hoare annotation was computed. [2023-12-15 21:30:56,465 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-12-15 21:30:56,465 INFO L902 garLoopResultBuilder]: At program point L91(line 91) the Hoare annotation is: true [2023-12-15 21:30:56,465 INFO L899 garLoopResultBuilder]: For program point L91-1(line 91) no Hoare annotation was computed. [2023-12-15 21:30:56,465 INFO L902 garLoopResultBuilder]: At program point L83(line 83) the Hoare annotation is: true [2023-12-15 21:30:56,465 INFO L899 garLoopResultBuilder]: For program point L83-1(line 83) no Hoare annotation was computed. [2023-12-15 21:30:56,465 INFO L895 garLoopResultBuilder]: At program point L75(line 75) the Hoare annotation is: (let ((.cse3 (select |#memory_int#4| |~#unsigned_char_Array_0~0.base|))) (let ((.cse0 (mod (select .cse3 (+ |~#unsigned_char_Array_0~0.offset| 2)) 256)) (.cse2 (mod (select .cse3 |~#unsigned_char_Array_0~0.offset|) 256))) (or (let ((.cse1 (select |#memory_int#3| |~#signed_short_int_Array_0~0.base|))) (and (= (+ (select (select |#memory_int#2| |~#signed_long_int_Array_0~0.base|) |~#signed_long_int_Array_0~0.offset|) 4) 0) (= .cse0 (select .cse1 (+ 8 |~#signed_short_int_Array_0~0.offset|))) (= .cse2 (select .cse1 |~#signed_short_int_Array_0~0.offset|)))) (< (* (mod 2 (mod (select .cse3 (+ |~#unsigned_char_Array_0~0.offset| 3)) 256)) (div .cse0 (mod (select .cse3 (+ |~#unsigned_char_Array_0~0.offset| 1)) 256))) .cse2)))) [2023-12-15 21:30:56,465 INFO L899 garLoopResultBuilder]: For program point L75-1(line 75) no Hoare annotation was computed. [2023-12-15 21:30:56,465 INFO L895 garLoopResultBuilder]: At program point L108-2(lines 108 114) the Hoare annotation is: (let ((.cse3 (select |#memory_int#4| |~#unsigned_char_Array_0~0.base|))) (let ((.cse0 (mod (select .cse3 (+ |~#unsigned_char_Array_0~0.offset| 2)) 256)) (.cse2 (mod (select .cse3 |~#unsigned_char_Array_0~0.offset|) 256))) (or (let ((.cse1 (select |#memory_int#3| |~#signed_short_int_Array_0~0.base|))) (and (= (+ (select (select |#memory_int#2| |~#signed_long_int_Array_0~0.base|) |~#signed_long_int_Array_0~0.offset|) 4) 0) (= .cse0 (select .cse1 (+ 8 |~#signed_short_int_Array_0~0.offset|))) (= .cse2 (select .cse1 |~#signed_short_int_Array_0~0.offset|)))) (< (* (mod 2 (mod (select .cse3 (+ |~#unsigned_char_Array_0~0.offset| 3)) 256)) (div .cse0 (mod (select .cse3 (+ |~#unsigned_char_Array_0~0.offset| 1)) 256))) .cse2)))) [2023-12-15 21:30:56,465 INFO L899 garLoopResultBuilder]: For program point L108-3(lines 108 114) no Hoare annotation was computed. [2023-12-15 21:30:56,465 INFO L902 garLoopResultBuilder]: At program point L92(line 92) the Hoare annotation is: true [2023-12-15 21:30:56,465 INFO L899 garLoopResultBuilder]: For program point L92-1(line 92) no Hoare annotation was computed. [2023-12-15 21:30:56,465 INFO L899 garLoopResultBuilder]: For program point L59(lines 59 61) no Hoare annotation was computed. [2023-12-15 21:30:56,466 INFO L899 garLoopResultBuilder]: For program point L59-2(lines 59 61) no Hoare annotation was computed. [2023-12-15 21:30:56,466 INFO L902 garLoopResultBuilder]: At program point L84(line 84) the Hoare annotation is: true [2023-12-15 21:30:56,466 INFO L899 garLoopResultBuilder]: For program point L84-1(line 84) no Hoare annotation was computed. [2023-12-15 21:30:56,466 INFO L895 garLoopResultBuilder]: At program point L68(line 68) the Hoare annotation is: (let ((.cse3 (select |#memory_int#4| |~#unsigned_char_Array_0~0.base|))) (let ((.cse0 (mod (select .cse3 (+ |~#unsigned_char_Array_0~0.offset| 2)) 256)) (.cse2 (mod (select .cse3 |~#unsigned_char_Array_0~0.offset|) 256))) (or (let ((.cse1 (select |#memory_int#3| |~#signed_short_int_Array_0~0.base|))) (and (= (+ (select (select |#memory_int#2| |~#signed_long_int_Array_0~0.base|) |~#signed_long_int_Array_0~0.offset|) 4) 0) (= .cse0 (select .cse1 (+ 8 |~#signed_short_int_Array_0~0.offset|))) (= .cse2 (select .cse1 |~#signed_short_int_Array_0~0.offset|)))) (< (* (mod 2 (mod (select .cse3 (+ |~#unsigned_char_Array_0~0.offset| 3)) 256)) (div .cse0 (mod (select .cse3 (+ |~#unsigned_char_Array_0~0.offset| 1)) 256))) .cse2)))) [2023-12-15 21:30:56,466 INFO L899 garLoopResultBuilder]: For program point L68-1(line 68) no Hoare annotation was computed. [2023-12-15 21:30:56,468 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:30:56,469 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-15 21:30:56,484 WARN L1574 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #memory_int#2[~#signed_long_int_Array_0~0!base][~#signed_long_int_Array_0~0!offset] could not be translated [2023-12-15 21:30:56,487 WARN L1574 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #memory_int#4[~#unsigned_char_Array_0~0!base][~#unsigned_char_Array_0~0!offset + 2] could not be translated [2023-12-15 21:30:56,487 WARN L1574 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #memory_int#3[~#signed_short_int_Array_0~0!base][8 + ~#signed_short_int_Array_0~0!offset] could not be translated [2023-12-15 21:30:56,487 WARN L1574 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #memory_int#4[~#unsigned_char_Array_0~0!base][~#unsigned_char_Array_0~0!offset] could not be translated [2023-12-15 21:30:56,487 WARN L1574 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #memory_int#3[~#signed_short_int_Array_0~0!base][~#signed_short_int_Array_0~0!offset] could not be translated [2023-12-15 21:30:56,487 WARN L1574 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #memory_int#4[~#unsigned_char_Array_0~0!base][~#unsigned_char_Array_0~0!offset + 3] could not be translated [2023-12-15 21:30:56,487 WARN L1574 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #memory_int#4[~#unsigned_char_Array_0~0!base][~#unsigned_char_Array_0~0!offset + 2] could not be translated [2023-12-15 21:30:56,488 WARN L1574 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #memory_int#4[~#unsigned_char_Array_0~0!base][~#unsigned_char_Array_0~0!offset + 1] could not be translated [2023-12-15 21:30:56,488 WARN L1574 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #memory_int#4[~#unsigned_char_Array_0~0!base][~#unsigned_char_Array_0~0!offset] could not be translated [2023-12-15 21:30:56,489 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.12 09:30:56 BoogieIcfgContainer [2023-12-15 21:30:56,489 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-15 21:30:56,489 INFO L158 Benchmark]: Toolchain (without parser) took 20183.16ms. Allocated memory was 195.0MB in the beginning and 518.0MB in the end (delta: 323.0MB). Free memory was 137.2MB in the beginning and 304.5MB in the end (delta: -167.3MB). Peak memory consumption was 282.6MB. Max. memory is 8.0GB. [2023-12-15 21:30:56,490 INFO L158 Benchmark]: CDTParser took 0.47ms. Allocated memory is still 195.0MB. Free memory is still 144.7MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-15 21:30:56,490 INFO L158 Benchmark]: CACSL2BoogieTranslator took 248.39ms. Allocated memory is still 195.0MB. Free memory was 136.9MB in the beginning and 121.4MB in the end (delta: 15.6MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. [2023-12-15 21:30:56,490 INFO L158 Benchmark]: Boogie Procedure Inliner took 59.05ms. Allocated memory is still 195.0MB. Free memory was 121.4MB in the beginning and 116.6MB in the end (delta: 4.8MB). Peak memory consumption was 5.2MB. Max. memory is 8.0GB. [2023-12-15 21:30:56,490 INFO L158 Benchmark]: Boogie Preprocessor took 82.67ms. Allocated memory is still 195.0MB. Free memory was 116.6MB in the beginning and 111.8MB in the end (delta: 4.8MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2023-12-15 21:30:56,491 INFO L158 Benchmark]: RCFGBuilder took 663.39ms. Allocated memory was 195.0MB in the beginning and 328.2MB in the end (delta: 133.2MB). Free memory was 111.8MB in the beginning and 266.2MB in the end (delta: -154.5MB). Peak memory consumption was 13.1MB. Max. memory is 8.0GB. [2023-12-15 21:30:56,491 INFO L158 Benchmark]: TraceAbstraction took 19123.31ms. Allocated memory was 328.2MB in the beginning and 518.0MB in the end (delta: 189.8MB). Free memory was 265.2MB in the beginning and 304.5MB in the end (delta: -39.3MB). Peak memory consumption was 276.8MB. Max. memory is 8.0GB. [2023-12-15 21:30:56,497 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.47ms. Allocated memory is still 195.0MB. Free memory is still 144.7MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 248.39ms. Allocated memory is still 195.0MB. Free memory was 136.9MB in the beginning and 121.4MB in the end (delta: 15.6MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 59.05ms. Allocated memory is still 195.0MB. Free memory was 121.4MB in the beginning and 116.6MB in the end (delta: 4.8MB). Peak memory consumption was 5.2MB. Max. memory is 8.0GB. * Boogie Preprocessor took 82.67ms. Allocated memory is still 195.0MB. Free memory was 116.6MB in the beginning and 111.8MB in the end (delta: 4.8MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * RCFGBuilder took 663.39ms. Allocated memory was 195.0MB in the beginning and 328.2MB in the end (delta: 133.2MB). Free memory was 111.8MB in the beginning and 266.2MB in the end (delta: -154.5MB). Peak memory consumption was 13.1MB. Max. memory is 8.0GB. * TraceAbstraction took 19123.31ms. Allocated memory was 328.2MB in the beginning and 518.0MB in the end (delta: 189.8MB). Free memory was 265.2MB in the beginning and 304.5MB in the end (delta: -39.3MB). Peak memory consumption was 276.8MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #memory_int#2[~#signed_long_int_Array_0~0!base][~#signed_long_int_Array_0~0!offset] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #memory_int#4[~#unsigned_char_Array_0~0!base][~#unsigned_char_Array_0~0!offset + 2] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #memory_int#3[~#signed_short_int_Array_0~0!base][8 + ~#signed_short_int_Array_0~0!offset] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #memory_int#4[~#unsigned_char_Array_0~0!base][~#unsigned_char_Array_0~0!offset] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #memory_int#3[~#signed_short_int_Array_0~0!base][~#signed_short_int_Array_0~0!offset] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #memory_int#4[~#unsigned_char_Array_0~0!base][~#unsigned_char_Array_0~0!offset + 3] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #memory_int#4[~#unsigned_char_Array_0~0!base][~#unsigned_char_Array_0~0!offset + 2] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #memory_int#4[~#unsigned_char_Array_0~0!base][~#unsigned_char_Array_0~0!offset + 1] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #memory_int#4[~#unsigned_char_Array_0~0!base][~#unsigned_char_Array_0~0!offset] could not be translated * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 19]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 88 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 19.1s, OverallIterations: 23, TraceHistogramMax: 20, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 3.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.9s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1715 SdHoareTripleChecker+Valid, 2.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1715 mSDsluCounter, 12452 SdHoareTripleChecker+Invalid, 2.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 9272 mSDsCounter, 139 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2993 IncrementalHoareTripleChecker+Invalid, 3132 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 139 mSolverCounterUnsat, 3180 mSDtfsCounter, 2993 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 4206 GetRequests, 3990 SyntacticMatches, 0 SemanticMatches, 216 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1272 ImplicationChecksByTransitivity, 2.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=282occurred in iteration=22, InterpolantAutomatonStates: 161, 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, 23 MinimizatonAttempts, 601 StatesRemovedByMinimization, 18 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 22 LocationsWithAnnotation, 587 PreInvPairs, 656 NumberOfFragments, 733 HoareAnnotationTreeSize, 587 FormulaSimplifications, 30905 FormulaSimplificationTreeSizeReduction, 0.2s HoareSimplificationTime, 22 FormulaSimplificationsInter, 7967 FormulaSimplificationTreeSizeReductionInter, 0.7s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.8s SsaConstructionTime, 1.6s SatisfiabilityAnalysisTime, 4.7s InterpolantComputationTime, 3546 NumberOfCodeBlocks, 3546 NumberOfCodeBlocksAsserted, 24 NumberOfCheckSat, 4134 ConstructedInterpolants, 0 QuantifiedInterpolants, 14158 SizeOfPredicates, 189 NumberOfNonLiveVariables, 10830 ConjunctsInSsa, 382 ConjunctsInUnsatCore, 28 InterpolantComputations, 23 PerfectInterpolantSequences, 21091/21280 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 108]: Loop Invariant Derived loop invariant: null RESULT: Ultimate proved your program to be correct! [2023-12-15 21:30:56,562 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...