/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCTransformed.xml -s ../../../trunk/examples/settings/loopacceleration/qvasr/qvasr_64.epf -i ../../../trunk/examples/svcomp/loop-zilu/benchmark23_conjunctive.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-34549b5 [2022-04-06 10:41:15,462 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-04-06 10:41:15,463 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-04-06 10:41:15,482 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-04-06 10:41:15,496 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-04-06 10:41:15,498 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-04-06 10:41:15,498 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-04-06 10:41:15,500 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-04-06 10:41:15,500 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-04-06 10:41:15,501 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-04-06 10:41:15,504 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-04-06 10:41:15,505 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-04-06 10:41:15,506 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-04-06 10:41:15,509 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-04-06 10:41:15,509 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-04-06 10:41:15,510 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-04-06 10:41:15,511 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-04-06 10:41:15,514 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-04-06 10:41:15,518 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-04-06 10:41:15,518 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-04-06 10:41:15,523 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-04-06 10:41:15,524 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/loopacceleration/qvasr/qvasr_64.epf [2022-04-06 10:41:15,544 INFO L113 SettingsManager]: Loading preferences was successful [2022-04-06 10:41:15,544 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-04-06 10:41:15,545 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-04-06 10:41:15,545 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-04-06 10:41:15,546 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-04-06 10:41:15,546 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-04-06 10:41:15,546 INFO L138 SettingsManager]: * Use SBE=true [2022-04-06 10:41:15,546 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-04-06 10:41:15,546 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-04-06 10:41:15,547 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-04-06 10:41:15,547 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-04-06 10:41:15,547 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-04-06 10:41:15,547 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-04-06 10:41:15,547 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-04-06 10:41:15,547 INFO L138 SettingsManager]: * Use constant arrays=true [2022-04-06 10:41:15,547 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-04-06 10:41:15,547 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-04-06 10:41:15,547 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-04-06 10:41:15,547 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-04-06 10:41:15,547 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-06 10:41:15,548 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-04-06 10:41:15,548 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-04-06 10:41:15,548 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-04-06 10:41:15,548 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-04-06 10:41:15,548 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-04-06 10:41:15,548 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-04-06 10:41:15,548 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-04-06 10:41:15,548 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-04-06 10:41:15,549 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-04-06 10:41:15,549 INFO L138 SettingsManager]: * TransformationType=LOOP_ACCELERATION_QVASR 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-04-06 10:41:15,697 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-04-06 10:41:15,708 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-04-06 10:41:15,710 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-04-06 10:41:15,710 INFO L271 PluginConnector]: Initializing CDTParser... [2022-04-06 10:41:15,713 INFO L275 PluginConnector]: CDTParser initialized [2022-04-06 10:41:15,714 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-zilu/benchmark23_conjunctive.i [2022-04-06 10:41:15,761 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/84c4d7e95/ecaf2f8e5f214b9dba4e0aca7f457be5/FLAGe859c7ef4 [2022-04-06 10:41:16,097 INFO L306 CDTParser]: Found 1 translation units. [2022-04-06 10:41:16,097 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-zilu/benchmark23_conjunctive.i [2022-04-06 10:41:16,107 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/84c4d7e95/ecaf2f8e5f214b9dba4e0aca7f457be5/FLAGe859c7ef4 [2022-04-06 10:41:16,529 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/84c4d7e95/ecaf2f8e5f214b9dba4e0aca7f457be5 [2022-04-06 10:41:16,531 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-04-06 10:41:16,532 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-04-06 10:41:16,532 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-04-06 10:41:16,533 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-04-06 10:41:16,535 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-04-06 10:41:16,535 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.04 10:41:16" (1/1) ... [2022-04-06 10:41:16,536 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5f2e3cbd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 10:41:16, skipping insertion in model container [2022-04-06 10:41:16,536 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.04 10:41:16" (1/1) ... [2022-04-06 10:41:16,540 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-04-06 10:41:16,547 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-04-06 10:41:16,659 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-zilu/benchmark23_conjunctive.i[873,886] [2022-04-06 10:41:16,665 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-06 10:41:16,678 INFO L203 MainTranslator]: Completed pre-run [2022-04-06 10:41:16,686 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-zilu/benchmark23_conjunctive.i[873,886] [2022-04-06 10:41:16,689 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-06 10:41:16,697 INFO L208 MainTranslator]: Completed translation [2022-04-06 10:41:16,697 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 10:41:16 WrapperNode [2022-04-06 10:41:16,698 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-04-06 10:41:16,699 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-04-06 10:41:16,699 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-04-06 10:41:16,699 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-04-06 10:41:16,706 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 10:41:16" (1/1) ... [2022-04-06 10:41:16,706 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 10:41:16" (1/1) ... [2022-04-06 10:41:16,711 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 10:41:16" (1/1) ... [2022-04-06 10:41:16,711 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 10:41:16" (1/1) ... [2022-04-06 10:41:16,713 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 10:41:16" (1/1) ... [2022-04-06 10:41:16,715 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 10:41:16" (1/1) ... [2022-04-06 10:41:16,715 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 10:41:16" (1/1) ... [2022-04-06 10:41:16,733 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-04-06 10:41:16,733 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-04-06 10:41:16,734 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-04-06 10:41:16,734 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-04-06 10:41:16,734 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 10:41:16" (1/1) ... [2022-04-06 10:41:16,755 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-06 10:41:16,763 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 10:41:16,808 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-04-06 10:41:16,811 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-04-06 10:41:16,843 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-04-06 10:41:16,844 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-04-06 10:41:16,844 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-04-06 10:41:16,844 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-04-06 10:41:16,844 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-04-06 10:41:16,844 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-04-06 10:41:16,844 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2022-04-06 10:41:16,844 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2022-04-06 10:41:16,844 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-04-06 10:41:16,844 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-04-06 10:41:16,844 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-04-06 10:41:16,845 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2022-04-06 10:41:16,845 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-04-06 10:41:16,845 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-04-06 10:41:16,845 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-04-06 10:41:16,845 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-04-06 10:41:16,845 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-04-06 10:41:16,845 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-04-06 10:41:16,845 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-04-06 10:41:16,845 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-04-06 10:41:16,887 INFO L234 CfgBuilder]: Building ICFG [2022-04-06 10:41:16,888 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-04-06 10:41:16,960 INFO L275 CfgBuilder]: Performing block encoding [2022-04-06 10:41:16,963 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-04-06 10:41:16,964 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-04-06 10:41:16,965 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.04 10:41:16 BoogieIcfgContainer [2022-04-06 10:41:16,965 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-04-06 10:41:16,965 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-04-06 10:41:16,965 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-04-06 10:41:16,966 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-04-06 10:41:16,968 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.04 10:41:16" (1/1) ... [2022-04-06 10:41:16,970 INFO L168 ansformationObserver]: Applying ICFG transformation LOOP_ACCELERATION_QVASR [2022-04-06 10:41:16,978 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 06.04 10:41:16 BasicIcfg [2022-04-06 10:41:16,978 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-04-06 10:41:16,979 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-04-06 10:41:16,980 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-04-06 10:41:16,982 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-04-06 10:41:16,982 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.04 10:41:16" (1/4) ... [2022-04-06 10:41:16,982 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43426833 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.04 10:41:16, skipping insertion in model container [2022-04-06 10:41:16,982 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 10:41:16" (2/4) ... [2022-04-06 10:41:16,983 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43426833 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.04 10:41:16, skipping insertion in model container [2022-04-06 10:41:16,983 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.04 10:41:16" (3/4) ... [2022-04-06 10:41:16,983 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43426833 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.04 10:41:16, skipping insertion in model container [2022-04-06 10:41:16,983 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 06.04 10:41:16" (4/4) ... [2022-04-06 10:41:16,984 INFO L111 eAbstractionObserver]: Analyzing ICFG benchmark23_conjunctive.iqvasr [2022-04-06 10:41:16,987 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-04-06 10:41:16,987 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-04-06 10:41:17,016 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-06 10:41:17,021 INFO L340 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=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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 [2022-04-06 10:41:17,021 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-04-06 10:41:17,031 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 13 states have internal predecessors, (17), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-04-06 10:41:17,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-04-06 10:41:17,034 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 10:41:17,035 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 10:41:17,035 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 10:41:17,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 10:41:17,039 INFO L85 PathProgramCache]: Analyzing trace with hash 1809217115, now seen corresponding path program 1 times [2022-04-06 10:41:17,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 10:41:17,045 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597800484] [2022-04-06 10:41:17,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 10:41:17,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 10:41:17,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 10:41:17,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 10:41:17,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 10:41:17,194 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 10:41:17,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 10:41:17,194 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597800484] [2022-04-06 10:41:17,195 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1597800484] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 10:41:17,195 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 10:41:17,195 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-04-06 10:41:17,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90287154] [2022-04-06 10:41:17,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 10:41:17,199 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-06 10:41:17,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 10:41:17,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-06 10:41:17,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-06 10:41:17,233 INFO L87 Difference]: Start difference. First operand has 20 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 13 states have internal predecessors, (17), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 10:41:17,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 10:41:17,265 INFO L93 Difference]: Finished difference Result 32 states and 36 transitions. [2022-04-06 10:41:17,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-06 10:41:17,271 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2022-04-06 10:41:17,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 10:41:17,276 INFO L225 Difference]: With dead ends: 32 [2022-04-06 10:41:17,276 INFO L226 Difference]: Without dead ends: 13 [2022-04-06 10:41:17,279 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-06 10:41:17,282 INFO L913 BasicCegarLoop]: 20 mSDtfsCounter, 12 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-06 10:41:17,282 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 23 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-06 10:41:17,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2022-04-06 10:41:17,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2022-04-06 10:41:17,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 10:41:17,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2022-04-06 10:41:17,314 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 12 [2022-04-06 10:41:17,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 10:41:17,314 INFO L478 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2022-04-06 10:41:17,314 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 10:41:17,315 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2022-04-06 10:41:17,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-04-06 10:41:17,315 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 10:41:17,315 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 10:41:17,315 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-04-06 10:41:17,315 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 10:41:17,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 10:41:17,316 INFO L85 PathProgramCache]: Analyzing trace with hash 1810140636, now seen corresponding path program 1 times [2022-04-06 10:41:17,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 10:41:17,316 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [3562221] [2022-04-06 10:41:17,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 10:41:17,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 10:41:17,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 10:41:17,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 10:41:17,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 10:41:17,350 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 10:41:17,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 10:41:17,351 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [3562221] [2022-04-06 10:41:17,351 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [3562221] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 10:41:17,351 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 10:41:17,351 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-04-06 10:41:17,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603407197] [2022-04-06 10:41:17,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 10:41:17,352 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-04-06 10:41:17,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 10:41:17,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-04-06 10:41:17,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-04-06 10:41:17,353 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 10:41:17,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 10:41:17,372 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2022-04-06 10:41:17,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-04-06 10:41:17,372 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2022-04-06 10:41:17,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 10:41:17,373 INFO L225 Difference]: With dead ends: 19 [2022-04-06 10:41:17,373 INFO L226 Difference]: Without dead ends: 14 [2022-04-06 10:41:17,373 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-04-06 10:41:17,374 INFO L913 BasicCegarLoop]: 12 mSDtfsCounter, 7 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-06 10:41:17,374 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 19 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-06 10:41:17,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2022-04-06 10:41:17,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2022-04-06 10:41:17,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 9 states have internal predecessors, (10), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 10:41:17,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2022-04-06 10:41:17,390 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 12 [2022-04-06 10:41:17,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 10:41:17,391 INFO L478 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2022-04-06 10:41:17,391 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 10:41:17,391 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2022-04-06 10:41:17,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-04-06 10:41:17,392 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 10:41:17,392 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 10:41:17,392 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-04-06 10:41:17,392 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 10:41:17,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 10:41:17,392 INFO L85 PathProgramCache]: Analyzing trace with hash 306506437, now seen corresponding path program 1 times [2022-04-06 10:41:17,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 10:41:17,393 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778020811] [2022-04-06 10:41:17,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 10:41:17,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 10:41:17,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 10:41:17,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 10:41:17,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 10:41:17,456 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 10:41:17,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 10:41:17,457 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778020811] [2022-04-06 10:41:17,457 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1778020811] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 10:41:17,457 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1424322492] [2022-04-06 10:41:17,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 10:41:17,457 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 10:41:17,458 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 10:41:17,459 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) [2022-04-06 10:41:17,460 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-04-06 10:41:17,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 10:41:17,493 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 3 conjunts are in the unsatisfiable core [2022-04-06 10:41:17,496 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 10:41:17,535 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 10:41:17,535 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 10:41:17,595 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 10:41:17,596 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1424322492] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 10:41:17,596 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-06 10:41:17,596 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 7 [2022-04-06 10:41:17,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667978234] [2022-04-06 10:41:17,596 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-06 10:41:17,597 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-04-06 10:41:17,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 10:41:17,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-04-06 10:41:17,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-04-06 10:41:17,597 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand has 7 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 6 states have internal predecessors, (13), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 10:41:17,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 10:41:17,668 INFO L93 Difference]: Finished difference Result 22 states and 24 transitions. [2022-04-06 10:41:17,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-04-06 10:41:17,669 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 6 states have internal predecessors, (13), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2022-04-06 10:41:17,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 10:41:17,669 INFO L225 Difference]: With dead ends: 22 [2022-04-06 10:41:17,669 INFO L226 Difference]: Without dead ends: 17 [2022-04-06 10:41:17,670 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2022-04-06 10:41:17,670 INFO L913 BasicCegarLoop]: 12 mSDtfsCounter, 7 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-06 10:41:17,671 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 29 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-06 10:41:17,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2022-04-06 10:41:17,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2022-04-06 10:41:17,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 12 states have (on average 1.0833333333333333) internal successors, (13), 12 states have internal predecessors, (13), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 10:41:17,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2022-04-06 10:41:17,674 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 13 [2022-04-06 10:41:17,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 10:41:17,674 INFO L478 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2022-04-06 10:41:17,674 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 6 states have internal predecessors, (13), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 10:41:17,675 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2022-04-06 10:41:17,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-04-06 10:41:17,675 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 10:41:17,675 INFO L499 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 10:41:17,691 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-04-06 10:41:17,893 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 10:41:17,893 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 10:41:17,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 10:41:17,894 INFO L85 PathProgramCache]: Analyzing trace with hash 797507612, now seen corresponding path program 2 times [2022-04-06 10:41:17,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 10:41:17,895 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [905030438] [2022-04-06 10:41:17,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 10:41:17,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 10:41:17,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 10:41:17,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 10:41:17,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 10:41:18,016 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 10:41:18,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 10:41:18,016 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [905030438] [2022-04-06 10:41:18,017 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [905030438] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 10:41:18,018 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1888720048] [2022-04-06 10:41:18,018 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-06 10:41:18,018 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 10:41:18,018 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 10:41:18,026 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) [2022-04-06 10:41:18,027 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-04-06 10:41:18,056 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-04-06 10:41:18,057 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 10:41:18,057 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 6 conjunts are in the unsatisfiable core [2022-04-06 10:41:18,058 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 10:41:18,088 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 10:41:18,088 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 10:41:18,154 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 10:41:18,155 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1888720048] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 10:41:18,155 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-06 10:41:18,155 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 13 [2022-04-06 10:41:18,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057980965] [2022-04-06 10:41:18,155 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-06 10:41:18,155 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-04-06 10:41:18,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 10:41:18,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-04-06 10:41:18,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2022-04-06 10:41:18,156 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand has 13 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 12 states have internal predecessors, (19), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 10:41:18,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 10:41:18,298 INFO L93 Difference]: Finished difference Result 28 states and 33 transitions. [2022-04-06 10:41:18,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-04-06 10:41:18,299 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 12 states have internal predecessors, (19), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2022-04-06 10:41:18,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 10:41:18,301 INFO L225 Difference]: With dead ends: 28 [2022-04-06 10:41:18,301 INFO L226 Difference]: Without dead ends: 23 [2022-04-06 10:41:18,302 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=198, Invalid=308, Unknown=0, NotChecked=0, Total=506 [2022-04-06 10:41:18,305 INFO L913 BasicCegarLoop]: 12 mSDtfsCounter, 7 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-06 10:41:18,306 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 24 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-06 10:41:18,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2022-04-06 10:41:18,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2022-04-06 10:41:18,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 18 states have (on average 1.0555555555555556) internal successors, (19), 18 states have internal predecessors, (19), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 10:41:18,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 23 transitions. [2022-04-06 10:41:18,316 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 23 transitions. Word has length 16 [2022-04-06 10:41:18,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 10:41:18,316 INFO L478 AbstractCegarLoop]: Abstraction has 23 states and 23 transitions. [2022-04-06 10:41:18,317 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 12 states have internal predecessors, (19), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 10:41:18,317 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 23 transitions. [2022-04-06 10:41:18,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-04-06 10:41:18,322 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 10:41:18,324 INFO L499 BasicCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 10:41:18,340 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-04-06 10:41:18,525 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2022-04-06 10:41:18,525 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 10:41:18,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 10:41:18,525 INFO L85 PathProgramCache]: Analyzing trace with hash -589901956, now seen corresponding path program 3 times [2022-04-06 10:41:18,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 10:41:18,526 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274462441] [2022-04-06 10:41:18,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 10:41:18,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 10:41:18,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 10:41:18,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 10:41:18,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 10:41:18,660 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 10:41:18,660 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 10:41:18,660 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1274462441] [2022-04-06 10:41:18,661 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1274462441] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 10:41:18,661 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1103068422] [2022-04-06 10:41:18,661 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-04-06 10:41:18,661 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 10:41:18,661 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 10:41:18,662 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) [2022-04-06 10:41:18,663 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-04-06 10:41:18,699 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-04-06 10:41:18,699 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 10:41:18,700 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 12 conjunts are in the unsatisfiable core [2022-04-06 10:41:18,702 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 10:41:18,747 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 10:41:18,747 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 10:41:18,926 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 10:41:18,927 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1103068422] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 10:41:18,927 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-06 10:41:18,927 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 13] total 25 [2022-04-06 10:41:18,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723125058] [2022-04-06 10:41:18,927 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-06 10:41:18,928 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-04-06 10:41:18,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 10:41:18,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-04-06 10:41:18,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=278, Invalid=322, Unknown=0, NotChecked=0, Total=600 [2022-04-06 10:41:18,929 INFO L87 Difference]: Start difference. First operand 23 states and 23 transitions. Second operand has 25 states, 25 states have (on average 1.24) internal successors, (31), 24 states have internal predecessors, (31), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 10:41:19,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 10:41:19,317 INFO L93 Difference]: Finished difference Result 40 states and 51 transitions. [2022-04-06 10:41:19,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-04-06 10:41:19,318 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 1.24) internal successors, (31), 24 states have internal predecessors, (31), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 22 [2022-04-06 10:41:19,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 10:41:19,319 INFO L225 Difference]: With dead ends: 40 [2022-04-06 10:41:19,319 INFO L226 Difference]: Without dead ends: 35 [2022-04-06 10:41:19,321 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 286 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=828, Invalid=1334, Unknown=0, NotChecked=0, Total=2162 [2022-04-06 10:41:19,321 INFO L913 BasicCegarLoop]: 12 mSDtfsCounter, 7 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-06 10:41:19,322 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 24 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-06 10:41:19,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2022-04-06 10:41:19,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2022-04-06 10:41:19,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 30 states have (on average 1.0333333333333334) internal successors, (31), 30 states have internal predecessors, (31), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 10:41:19,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 35 transitions. [2022-04-06 10:41:19,331 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 35 transitions. Word has length 22 [2022-04-06 10:41:19,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 10:41:19,331 INFO L478 AbstractCegarLoop]: Abstraction has 35 states and 35 transitions. [2022-04-06 10:41:19,331 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 1.24) internal successors, (31), 24 states have internal predecessors, (31), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 10:41:19,331 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 35 transitions. [2022-04-06 10:41:19,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-04-06 10:41:19,332 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 10:41:19,332 INFO L499 BasicCegarLoop]: trace histogram [22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 10:41:19,348 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-04-06 10:41:19,548 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 10:41:19,549 INFO L403 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 10:41:19,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 10:41:19,549 INFO L85 PathProgramCache]: Analyzing trace with hash 567629372, now seen corresponding path program 4 times [2022-04-06 10:41:19,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 10:41:19,550 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499031762] [2022-04-06 10:41:19,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 10:41:19,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 10:41:19,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 10:41:19,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 10:41:19,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 10:41:19,878 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 10:41:19,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 10:41:19,878 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499031762] [2022-04-06 10:41:19,878 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1499031762] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 10:41:19,878 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [680773660] [2022-04-06 10:41:19,878 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-04-06 10:41:19,879 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 10:41:19,879 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 10:41:19,882 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) [2022-04-06 10:41:19,883 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-04-06 10:41:19,922 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-04-06 10:41:19,922 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 10:41:19,923 INFO L263 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 24 conjunts are in the unsatisfiable core [2022-04-06 10:41:19,926 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 10:41:19,995 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 10:41:19,995 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 10:41:20,575 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 10:41:20,575 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [680773660] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 10:41:20,575 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-06 10:41:20,575 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 25, 25] total 49 [2022-04-06 10:41:20,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915089105] [2022-04-06 10:41:20,576 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-06 10:41:20,576 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2022-04-06 10:41:20,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 10:41:20,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2022-04-06 10:41:20,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1130, Invalid=1222, Unknown=0, NotChecked=0, Total=2352 [2022-04-06 10:41:20,578 INFO L87 Difference]: Start difference. First operand 35 states and 35 transitions. Second operand has 49 states, 49 states have (on average 1.1224489795918366) internal successors, (55), 48 states have internal predecessors, (55), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 10:41:21,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 10:41:21,289 INFO L93 Difference]: Finished difference Result 64 states and 87 transitions. [2022-04-06 10:41:21,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-04-06 10:41:21,290 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 1.1224489795918366) internal successors, (55), 48 states have internal predecessors, (55), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 34 [2022-04-06 10:41:21,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 10:41:21,291 INFO L225 Difference]: With dead ends: 64 [2022-04-06 10:41:21,291 INFO L226 Difference]: Without dead ends: 59 [2022-04-06 10:41:21,293 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1288 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=3384, Invalid=5546, Unknown=0, NotChecked=0, Total=8930 [2022-04-06 10:41:21,294 INFO L913 BasicCegarLoop]: 12 mSDtfsCounter, 7 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-06 10:41:21,294 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 34 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-06 10:41:21,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2022-04-06 10:41:21,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2022-04-06 10:41:21,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 54 states have (on average 1.0185185185185186) internal successors, (55), 54 states have internal predecessors, (55), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 10:41:21,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 59 transitions. [2022-04-06 10:41:21,304 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 59 transitions. Word has length 34 [2022-04-06 10:41:21,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 10:41:21,305 INFO L478 AbstractCegarLoop]: Abstraction has 59 states and 59 transitions. [2022-04-06 10:41:21,305 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 1.1224489795918366) internal successors, (55), 48 states have internal predecessors, (55), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 10:41:21,305 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 59 transitions. [2022-04-06 10:41:21,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-04-06 10:41:21,308 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 10:41:21,308 INFO L499 BasicCegarLoop]: trace histogram [46, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 10:41:21,325 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-04-06 10:41:21,522 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 10:41:21,523 INFO L403 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 10:41:21,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 10:41:21,523 INFO L85 PathProgramCache]: Analyzing trace with hash 1762001852, now seen corresponding path program 5 times [2022-04-06 10:41:21,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 10:41:21,523 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063729648] [2022-04-06 10:41:21,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 10:41:21,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 10:41:21,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 10:41:22,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 10:41:22,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 10:41:22,322 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 10:41:22,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 10:41:22,322 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063729648] [2022-04-06 10:41:22,322 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1063729648] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 10:41:22,322 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1880693789] [2022-04-06 10:41:22,322 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-04-06 10:41:22,322 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 10:41:22,322 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 10:41:22,336 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) [2022-04-06 10:41:22,355 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-04-06 10:41:22,393 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 24 check-sat command(s) [2022-04-06 10:41:22,393 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 10:41:22,395 INFO L263 TraceCheckSpWp]: Trace formula consists of 287 conjuncts, 48 conjunts are in the unsatisfiable core [2022-04-06 10:41:22,397 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 10:41:22,513 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 10:41:22,513 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 10:41:24,480 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 10:41:24,480 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1880693789] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 10:41:24,481 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-06 10:41:24,481 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 49, 49] total 97 [2022-04-06 10:41:24,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220569814] [2022-04-06 10:41:24,481 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-06 10:41:24,481 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 97 states [2022-04-06 10:41:24,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 10:41:24,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2022-04-06 10:41:24,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4562, Invalid=4750, Unknown=0, NotChecked=0, Total=9312 [2022-04-06 10:41:24,485 INFO L87 Difference]: Start difference. First operand 59 states and 59 transitions. Second operand has 97 states, 97 states have (on average 1.0618556701030928) internal successors, (103), 96 states have internal predecessors, (103), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 10:41:27,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 10:41:27,226 INFO L93 Difference]: Finished difference Result 112 states and 159 transitions. [2022-04-06 10:41:27,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2022-04-06 10:41:27,226 INFO L78 Accepts]: Start accepts. Automaton has has 97 states, 97 states have (on average 1.0618556701030928) internal successors, (103), 96 states have internal predecessors, (103), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 58 [2022-04-06 10:41:27,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 10:41:27,227 INFO L225 Difference]: With dead ends: 112 [2022-04-06 10:41:27,227 INFO L226 Difference]: Without dead ends: 107 [2022-04-06 10:41:27,236 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 189 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5452 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=13680, Invalid=22610, Unknown=0, NotChecked=0, Total=36290 [2022-04-06 10:41:27,238 INFO L913 BasicCegarLoop]: 12 mSDtfsCounter, 7 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 149 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 287 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 149 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-06 10:41:27,238 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 49 Invalid, 287 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [149 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-06 10:41:27,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2022-04-06 10:41:27,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107. [2022-04-06 10:41:27,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 102 states have (on average 1.0098039215686274) internal successors, (103), 102 states have internal predecessors, (103), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 10:41:27,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 107 transitions. [2022-04-06 10:41:27,255 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 107 transitions. Word has length 58 [2022-04-06 10:41:27,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 10:41:27,255 INFO L478 AbstractCegarLoop]: Abstraction has 107 states and 107 transitions. [2022-04-06 10:41:27,255 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 97 states, 97 states have (on average 1.0618556701030928) internal successors, (103), 96 states have internal predecessors, (103), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 10:41:27,255 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 107 transitions. [2022-04-06 10:41:27,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-04-06 10:41:27,256 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 10:41:27,256 INFO L499 BasicCegarLoop]: trace histogram [94, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 10:41:27,283 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-04-06 10:41:27,495 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 10:41:27,496 INFO L403 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 10:41:27,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 10:41:27,496 INFO L85 PathProgramCache]: Analyzing trace with hash -982131012, now seen corresponding path program 6 times [2022-04-06 10:41:27,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 10:41:27,496 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1710110476] [2022-04-06 10:41:27,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 10:41:27,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 10:41:27,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 10:41:30,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 10:41:30,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 10:41:30,078 INFO L134 CoverageAnalysis]: Checked inductivity of 4465 backedges. 0 proven. 4465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 10:41:30,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 10:41:30,078 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1710110476] [2022-04-06 10:41:30,078 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1710110476] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 10:41:30,078 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [466826613] [2022-04-06 10:41:30,078 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-04-06 10:41:30,079 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 10:41:30,079 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 10:41:30,084 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) [2022-04-06 10:41:30,085 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-04-06 10:41:30,198 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 48 check-sat command(s) [2022-04-06 10:41:30,198 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 10:41:30,201 INFO L263 TraceCheckSpWp]: Trace formula consists of 527 conjuncts, 96 conjunts are in the unsatisfiable core [2022-04-06 10:41:30,204 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 10:41:30,394 INFO L134 CoverageAnalysis]: Checked inductivity of 4465 backedges. 0 proven. 4465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 10:41:30,395 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 10:41:30,991 INFO L134 CoverageAnalysis]: Checked inductivity of 4465 backedges. 0 proven. 4465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 10:41:30,992 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [466826613] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 10:41:30,992 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-06 10:41:30,999 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [98, 97, 97] total 103 [2022-04-06 10:41:30,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423745266] [2022-04-06 10:41:30,999 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-06 10:41:31,000 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 103 states [2022-04-06 10:41:31,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 10:41:31,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 103 interpolants. [2022-04-06 10:41:31,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5153, Invalid=5353, Unknown=0, NotChecked=0, Total=10506 [2022-04-06 10:41:31,002 INFO L87 Difference]: Start difference. First operand 107 states and 107 transitions. Second operand has 103 states, 103 states have (on average 1.0679611650485437) internal successors, (110), 102 states have internal predecessors, (110), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 10:41:34,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 10:41:34,030 INFO L93 Difference]: Finished difference Result 118 states and 123 transitions. [2022-04-06 10:41:34,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2022-04-06 10:41:34,030 INFO L78 Accepts]: Start accepts. Automaton has has 103 states, 103 states have (on average 1.0679611650485437) internal successors, (110), 102 states have internal predecessors, (110), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 106 [2022-04-06 10:41:34,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 10:41:34,031 INFO L225 Difference]: With dead ends: 118 [2022-04-06 10:41:34,031 INFO L226 Difference]: Without dead ends: 113 [2022-04-06 10:41:34,034 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 410 GetRequests, 208 SyntacticMatches, 1 SemanticMatches, 201 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5055 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=15453, Invalid=25553, Unknown=0, NotChecked=0, Total=41006 [2022-04-06 10:41:34,035 INFO L913 BasicCegarLoop]: 12 mSDtfsCounter, 7 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-06 10:41:34,035 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 39 Invalid, 237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-06 10:41:34,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2022-04-06 10:41:34,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 113. [2022-04-06 10:41:34,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 108 states have (on average 1.0092592592592593) internal successors, (109), 108 states have internal predecessors, (109), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 10:41:34,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 113 transitions. [2022-04-06 10:41:34,045 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 113 transitions. Word has length 106 [2022-04-06 10:41:34,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 10:41:34,045 INFO L478 AbstractCegarLoop]: Abstraction has 113 states and 113 transitions. [2022-04-06 10:41:34,045 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 103 states, 103 states have (on average 1.0679611650485437) internal successors, (110), 102 states have internal predecessors, (110), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 10:41:34,046 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 113 transitions. [2022-04-06 10:41:34,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-04-06 10:41:34,046 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 10:41:34,046 INFO L499 BasicCegarLoop]: trace histogram [100, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 10:41:34,063 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-04-06 10:41:34,247 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 10:41:34,248 INFO L403 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 10:41:34,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 10:41:34,248 INFO L85 PathProgramCache]: Analyzing trace with hash 151664156, now seen corresponding path program 7 times [2022-04-06 10:41:34,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 10:41:34,257 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279501652] [2022-04-06 10:41:34,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 10:41:34,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 10:41:34,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 10:41:38,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 10:41:38,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 10:41:38,036 INFO L134 CoverageAnalysis]: Checked inductivity of 5050 backedges. 0 proven. 5050 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 10:41:38,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 10:41:38,036 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279501652] [2022-04-06 10:41:38,036 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [279501652] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 10:41:38,036 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [856595702] [2022-04-06 10:41:38,036 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-04-06 10:41:38,036 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 10:41:38,036 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 10:41:38,037 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) [2022-04-06 10:41:38,038 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-04-06 10:41:38,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 10:41:38,121 INFO L263 TraceCheckSpWp]: Trace formula consists of 557 conjuncts, 205 conjunts are in the unsatisfiable core [2022-04-06 10:41:38,125 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 10:41:38,725 INFO L134 CoverageAnalysis]: Checked inductivity of 5050 backedges. 0 proven. 5050 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 10:41:38,725 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 10:41:39,326 INFO L134 CoverageAnalysis]: Checked inductivity of 5050 backedges. 0 proven. 5050 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 10:41:39,326 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [856595702] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 10:41:39,326 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-06 10:41:39,327 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [106, 105, 105] total 108 [2022-04-06 10:41:39,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159168258] [2022-04-06 10:41:39,328 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-06 10:41:39,328 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 108 states [2022-04-06 10:41:39,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 10:41:39,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 108 interpolants. [2022-04-06 10:41:39,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=215, Invalid=11341, Unknown=0, NotChecked=0, Total=11556 [2022-04-06 10:41:39,330 INFO L87 Difference]: Start difference. First operand 113 states and 113 transitions. Second operand has 108 states, 108 states have (on average 1.0277777777777777) internal successors, (111), 105 states have internal predecessors, (111), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 10:41:46,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 10:41:46,029 INFO L93 Difference]: Finished difference Result 119 states and 119 transitions. [2022-04-06 10:41:46,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2022-04-06 10:41:46,029 INFO L78 Accepts]: Start accepts. Automaton has has 108 states, 108 states have (on average 1.0277777777777777) internal successors, (111), 105 states have internal predecessors, (111), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 112 [2022-04-06 10:41:46,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 10:41:46,030 INFO L225 Difference]: With dead ends: 119 [2022-04-06 10:41:46,030 INFO L226 Difference]: Without dead ends: 114 [2022-04-06 10:41:46,034 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 433 GetRequests, 219 SyntacticMatches, 5 SemanticMatches, 209 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5457 ImplicationChecksByTransitivity, 7.3s TimeCoverageRelationStatistics Valid=632, Invalid=43678, Unknown=0, NotChecked=0, Total=44310 [2022-04-06 10:41:46,035 INFO L913 BasicCegarLoop]: 11 mSDtfsCounter, 11 mSDsluCounter, 517 mSDsCounter, 0 mSdLazyCounter, 11126 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 528 SdHoareTripleChecker+Invalid, 11230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 11126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-04-06 10:41:46,035 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 528 Invalid, 11230 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 11126 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-04-06 10:41:46,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2022-04-06 10:41:46,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 114. [2022-04-06 10:41:46,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 109 states have (on average 1.0091743119266054) internal successors, (110), 109 states have internal predecessors, (110), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 10:41:46,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 114 transitions. [2022-04-06 10:41:46,043 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 114 transitions. Word has length 112 [2022-04-06 10:41:46,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 10:41:46,043 INFO L478 AbstractCegarLoop]: Abstraction has 114 states and 114 transitions. [2022-04-06 10:41:46,043 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 108 states, 108 states have (on average 1.0277777777777777) internal successors, (111), 105 states have internal predecessors, (111), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 10:41:46,043 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 114 transitions. [2022-04-06 10:41:46,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-04-06 10:41:46,044 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 10:41:46,044 INFO L499 BasicCegarLoop]: trace histogram [101, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 10:41:46,062 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-04-06 10:41:46,260 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 10:41:46,261 INFO L403 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 10:41:46,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 10:41:46,261 INFO L85 PathProgramCache]: Analyzing trace with hash 433343109, now seen corresponding path program 8 times [2022-04-06 10:41:46,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 10:41:46,261 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [21032404] [2022-04-06 10:41:46,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 10:41:46,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 10:41:46,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 10:41:48,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 10:41:48,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 10:41:48,664 INFO L134 CoverageAnalysis]: Checked inductivity of 5151 backedges. 5151 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 10:41:48,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 10:41:48,664 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [21032404] [2022-04-06 10:41:48,665 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [21032404] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 10:41:48,665 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 10:41:48,665 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [104] imperfect sequences [] total 104 [2022-04-06 10:41:48,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134242742] [2022-04-06 10:41:48,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 10:41:48,665 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 104 states [2022-04-06 10:41:48,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 10:41:48,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 104 interpolants. [2022-04-06 10:41:48,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5255, Invalid=5457, Unknown=0, NotChecked=0, Total=10712 [2022-04-06 10:41:48,668 INFO L87 Difference]: Start difference. First operand 114 states and 114 transitions. Second operand has 104 states, 104 states have (on average 1.0480769230769231) internal successors, (109), 103 states have internal predecessors, (109), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 10:41:50,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 10:41:50,359 INFO L93 Difference]: Finished difference Result 114 states and 114 transitions. [2022-04-06 10:41:50,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2022-04-06 10:41:50,360 INFO L78 Accepts]: Start accepts. Automaton has has 104 states, 104 states have (on average 1.0480769230769231) internal successors, (109), 103 states have internal predecessors, (109), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 113 [2022-04-06 10:41:50,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 10:41:50,360 INFO L225 Difference]: With dead ends: 114 [2022-04-06 10:41:50,360 INFO L226 Difference]: Without dead ends: 0 [2022-04-06 10:41:50,363 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 203 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5050 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=15759, Invalid=26061, Unknown=0, NotChecked=0, Total=41820 [2022-04-06 10:41:50,363 INFO L913 BasicCegarLoop]: 7 mSDtfsCounter, 2 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 522 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 525 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 522 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-04-06 10:41:50,363 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 39 Invalid, 525 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 522 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-04-06 10:41:50,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-04-06 10:41:50,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-04-06 10:41:50,364 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) [2022-04-06 10:41:50,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-04-06 10:41:50,364 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 113 [2022-04-06 10:41:50,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 10:41:50,364 INFO L478 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-04-06 10:41:50,364 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 104 states, 104 states have (on average 1.0480769230769231) internal successors, (109), 103 states have internal predecessors, (109), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 10:41:50,364 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-04-06 10:41:50,365 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-06 10:41:50,366 INFO L788 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-04-06 10:41:50,367 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-04-06 10:41:50,368 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-04-06 10:41:51,572 INFO L878 garLoopResultBuilder]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|)) [2022-04-06 10:41:51,572 INFO L882 garLoopResultBuilder]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2022-04-06 10:41:51,573 INFO L882 garLoopResultBuilder]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2022-04-06 10:41:51,573 INFO L885 garLoopResultBuilder]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2022-04-06 10:41:51,573 INFO L885 garLoopResultBuilder]: At program point L-1(line -1) the Hoare annotation is: true [2022-04-06 10:41:51,573 INFO L882 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-04-06 10:41:51,573 INFO L882 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-04-06 10:41:51,573 INFO L885 garLoopResultBuilder]: At program point mainENTRY(lines 19 29) the Hoare annotation is: true [2022-04-06 10:41:51,573 INFO L882 garLoopResultBuilder]: For program point L22(line 22) no Hoare annotation was computed. [2022-04-06 10:41:51,573 INFO L882 garLoopResultBuilder]: For program point mainFINAL(lines 19 29) no Hoare annotation was computed. [2022-04-06 10:41:51,576 INFO L878 garLoopResultBuilder]: At program point L23-2(lines 23 26) the Hoare annotation is: (or (and (<= main_~j~0 190) (<= 190 main_~j~0) (<= 95 main_~i~0) (< main_~i~0 96)) (and (<= 38 main_~i~0) (<= 76 main_~j~0) (<= main_~i~0 38) (<= main_~j~0 76)) (and (<= main_~j~0 88) (<= 88 main_~j~0) (<= 44 main_~i~0) (<= main_~i~0 44)) (and (<= main_~j~0 130) (<= 130 main_~j~0) (<= 65 main_~i~0) (<= main_~i~0 65)) (and (<= main_~i~0 53) (<= 53 main_~i~0) (<= 106 main_~j~0) (<= main_~j~0 106)) (and (<= 86 main_~i~0) (<= main_~i~0 86) (<= 172 main_~j~0) (<= main_~j~0 172)) (and (<= main_~i~0 93) (<= 93 main_~i~0) (<= 186 main_~j~0) (<= main_~j~0 186)) (and (<= main_~j~0 72) (<= 72 main_~j~0) (<= 36 main_~i~0) (<= main_~i~0 36)) (and (<= main_~j~0 12) (<= 12 main_~j~0) (<= main_~i~0 6) (<= 6 main_~i~0)) (and (<= 134 main_~j~0) (<= 67 main_~i~0) (<= main_~i~0 67) (<= main_~j~0 134)) (and (<= 90 main_~i~0) (<= main_~j~0 180) (<= main_~i~0 90) (<= 180 main_~j~0)) (and (<= 148 main_~j~0) (<= main_~j~0 148) (<= 74 main_~i~0) (<= main_~i~0 74)) (and (<= 39 main_~i~0) (<= 78 main_~j~0) (<= main_~i~0 39) (<= main_~j~0 78)) (and (<= 23 main_~i~0) (<= main_~i~0 23) (<= 46 main_~j~0) (<= main_~j~0 46)) (and (<= 22 main_~j~0) (<= 11 main_~i~0) (<= main_~j~0 22) (<= main_~i~0 11)) (and (<= 77 main_~i~0) (<= main_~i~0 77) (<= 154 main_~j~0) (<= main_~j~0 154)) (and (<= 136 main_~j~0) (<= main_~j~0 136) (<= 68 main_~i~0) (<= main_~i~0 68)) (and (<= 97 main_~i~0) (<= main_~j~0 194) (< main_~i~0 98) (<= 194 main_~j~0)) (and (<= 132 main_~j~0) (<= main_~i~0 66) (<= main_~j~0 132) (<= 66 main_~i~0)) (and (<= 100 main_~i~0) (<= main_~j~0 200) (< 199 main_~j~0)) (and (<= 68 main_~j~0) (<= main_~j~0 68) (<= main_~i~0 34) (<= 34 main_~i~0)) (and (<= main_~j~0 92) (<= 46 main_~i~0) (<= main_~i~0 46) (<= 92 main_~j~0)) (and (<= 37 main_~i~0) (<= main_~i~0 37) (<= main_~j~0 74) (<= 74 main_~j~0)) (and (<= 20 main_~i~0) (<= main_~j~0 40) (<= 40 main_~j~0) (<= main_~i~0 20)) (and (<= 98 main_~i~0) (<= 196 main_~j~0) (< main_~i~0 99) (<= main_~j~0 196)) (and (<= main_~j~0 162) (<= main_~i~0 81) (<= 162 main_~j~0) (<= 81 main_~i~0)) (and (<= 52 main_~i~0) (<= main_~i~0 52) (<= main_~j~0 104) (<= 104 main_~j~0)) (and (<= 12 main_~i~0) (<= main_~j~0 24) (<= main_~i~0 12) (<= 24 main_~j~0)) (and (<= 31 main_~i~0) (<= main_~i~0 31) (<= main_~j~0 62) (<= 62 main_~j~0)) (and (<= main_~j~0 56) (<= main_~i~0 28) (<= 28 main_~i~0) (<= 56 main_~j~0)) (and (<= main_~j~0 90) (<= 90 main_~j~0) (<= 45 main_~i~0) (<= main_~i~0 45)) (and (<= main_~i~0 63) (<= main_~j~0 126) (<= 126 main_~j~0) (<= 63 main_~i~0)) (and (<= main_~i~0 79) (<= 158 main_~j~0) (<= main_~j~0 158) (<= 79 main_~i~0)) (and (<= 78 main_~i~0) (<= 156 main_~j~0) (<= main_~i~0 78) (<= main_~j~0 156)) (and (<= main_~j~0 100) (<= 100 main_~j~0) (<= main_~i~0 50) (<= 50 main_~i~0)) (and (<= 96 main_~j~0) (<= 48 main_~i~0) (<= main_~j~0 96) (<= main_~i~0 48)) (and (<= main_~j~0 44) (<= 22 main_~i~0) (<= main_~i~0 22) (<= 44 main_~j~0)) (and (<= main_~i~0 59) (<= 59 main_~i~0) (<= 118 main_~j~0) (<= main_~j~0 118)) (and (<= 150 main_~j~0) (<= main_~j~0 150) (<= main_~i~0 75) (<= 75 main_~i~0)) (and (<= 58 main_~j~0) (<= main_~j~0 58) (<= main_~i~0 29) (<= 29 main_~i~0)) (and (<= main_~i~0 16) (<= main_~j~0 32) (<= 16 main_~i~0) (<= 32 main_~j~0)) (and (<= 89 main_~i~0) (<= 178 main_~j~0) (<= main_~j~0 178) (<= main_~i~0 89)) (and (<= 30 main_~i~0) (<= main_~i~0 30) (<= main_~j~0 60) (<= 60 main_~j~0)) (and (<= 15 main_~i~0) (<= main_~j~0 30) (<= main_~i~0 15) (<= 30 main_~j~0)) (and (<= 33 main_~i~0) (<= main_~j~0 66) (<= 66 main_~j~0) (<= main_~i~0 33)) (and (<= main_~i~0 64) (<= main_~j~0 128) (<= 64 main_~i~0) (<= 128 main_~j~0)) (and (<= main_~j~0 8) (<= main_~i~0 4) (<= 8 main_~j~0) (<= 4 main_~i~0)) (and (<= 9 main_~i~0) (<= 18 main_~j~0) (<= main_~i~0 9) (<= main_~j~0 18)) (and (<= main_~i~0 56) (<= 56 main_~i~0) (<= main_~j~0 112) (<= 112 main_~j~0)) (and (<= main_~j~0 10) (<= 10 main_~j~0) (<= main_~i~0 5) (<= 5 main_~i~0)) (and (<= main_~j~0 144) (<= main_~i~0 72) (<= 72 main_~i~0) (<= 144 main_~j~0)) (and (<= main_~i~0 49) (<= 49 main_~i~0) (<= 98 main_~j~0) (<= main_~j~0 98)) (and (<= main_~j~0 52) (<= 52 main_~j~0) (<= main_~i~0 26) (<= 26 main_~i~0)) (and (<= 2 main_~i~0) (<= 4 main_~j~0) (<= main_~j~0 4) (<= main_~i~0 2)) (and (<= main_~i~0 92) (<= 184 main_~j~0) (<= main_~j~0 184) (<= 92 main_~i~0)) (and (<= main_~i~0 60) (<= 120 main_~j~0) (<= main_~j~0 120) (<= 60 main_~i~0)) (and (<= 138 main_~j~0) (<= main_~j~0 138) (<= 69 main_~i~0) (<= main_~i~0 69)) (and (<= 19 main_~i~0) (<= main_~j~0 38) (<= main_~i~0 19) (<= 38 main_~j~0)) (and (<= 58 main_~i~0) (<= main_~j~0 116) (<= 116 main_~j~0) (<= main_~i~0 58)) (and (<= 80 main_~i~0) (<= main_~i~0 80) (<= 160 main_~j~0) (<= main_~j~0 160)) (and (<= 114 main_~j~0) (<= main_~j~0 114) (<= main_~i~0 57) (<= 57 main_~i~0)) (and (<= 94 main_~i~0) (<= 188 main_~j~0) (<= main_~j~0 188) (<= main_~i~0 94)) (and (<= 108 main_~j~0) (<= main_~i~0 54) (<= main_~j~0 108) (<= 54 main_~i~0)) (and (<= 51 main_~i~0) (<= main_~i~0 51) (<= 102 main_~j~0) (<= main_~j~0 102)) (and (<= 164 main_~j~0) (<= main_~j~0 164) (<= 82 main_~i~0) (<= main_~i~0 82)) (and (<= 70 main_~j~0) (<= 35 main_~i~0) (<= main_~j~0 70) (<= main_~i~0 35)) (and (<= 64 main_~j~0) (<= main_~i~0 32) (<= main_~j~0 64) (<= 32 main_~i~0)) (and (<= 87 main_~i~0) (<= 174 main_~j~0) (<= main_~j~0 174) (<= main_~i~0 87)) (and (<= main_~i~0 76) (<= 152 main_~j~0) (<= main_~j~0 152) (<= 76 main_~i~0)) (and (<= main_~j~0 2) (<= main_~i~0 1) (<= 2 main_~j~0) (<= 1 main_~i~0)) (and (<= 83 main_~i~0) (<= main_~j~0 166) (<= main_~i~0 83) (<= 166 main_~j~0)) (and (<= main_~i~0 10) (<= 20 main_~j~0) (<= 10 main_~i~0) (<= main_~j~0 20)) (and (<= main_~i~0 41) (<= 82 main_~j~0) (<= 41 main_~i~0) (<= main_~j~0 82)) (and (<= main_~j~0 36) (<= main_~i~0 18) (<= 18 main_~i~0) (<= 36 main_~j~0)) (and (<= main_~i~0 27) (<= 54 main_~j~0) (<= main_~j~0 54) (<= 27 main_~i~0)) (and (<= 50 main_~j~0) (<= 25 main_~i~0) (<= main_~j~0 50) (<= main_~i~0 25)) (and (<= main_~j~0 86) (<= 86 main_~j~0) (<= main_~i~0 43) (<= 43 main_~i~0)) (and (<= 62 main_~i~0) (<= 124 main_~j~0) (<= main_~i~0 62) (<= main_~j~0 124)) (and (<= main_~j~0 142) (<= 142 main_~j~0) (<= main_~i~0 71) (<= 71 main_~i~0)) (and (<= 42 main_~i~0) (<= main_~i~0 42) (<= 84 main_~j~0) (<= main_~j~0 84)) (and (<= main_~j~0 192) (< main_~i~0 97) (<= 96 main_~i~0) (<= 192 main_~j~0)) (and (<= 14 main_~j~0) (<= main_~i~0 7) (<= main_~j~0 14) (<= 7 main_~i~0)) (and (<= main_~j~0 6) (<= 6 main_~j~0) (<= 3 main_~i~0) (<= main_~i~0 3)) (and (<= main_~j~0 34) (<= 17 main_~i~0) (<= main_~i~0 17) (<= 34 main_~j~0)) (and (<= 40 main_~i~0) (<= 80 main_~j~0) (<= main_~i~0 40) (<= main_~j~0 80)) (and (<= main_~i~0 14) (<= 14 main_~i~0) (<= main_~j~0 28) (<= 28 main_~j~0)) (and (<= 88 main_~i~0) (<= 176 main_~j~0) (<= main_~j~0 176) (<= main_~i~0 88)) (and (<= main_~i~0 0) (<= 0 main_~j~0) (<= 0 main_~i~0) (<= main_~j~0 0)) (and (<= main_~i~0 70) (<= 70 main_~i~0) (<= main_~j~0 140) (<= 140 main_~j~0)) (and (<= 182 main_~j~0) (<= main_~i~0 91) (<= 91 main_~i~0) (<= main_~j~0 182)) (and (<= 24 main_~i~0) (<= main_~j~0 48) (<= main_~i~0 24) (<= 48 main_~j~0)) (and (<= main_~j~0 146) (<= 146 main_~j~0) (<= main_~i~0 73) (<= 73 main_~i~0)) (and (<= 8 main_~i~0) (<= main_~i~0 8) (<= main_~j~0 16) (<= 16 main_~j~0)) (and (<= 42 main_~j~0) (<= main_~j~0 42) (<= main_~i~0 21) (<= 21 main_~i~0)) (and (<= main_~j~0 198) (< main_~i~0 100) (<= 99 main_~i~0) (<= 198 main_~j~0)) (and (<= main_~j~0 122) (<= 61 main_~i~0) (<= main_~i~0 61) (<= 122 main_~j~0)) (and (<= main_~i~0 84) (<= 168 main_~j~0) (<= 84 main_~i~0) (<= main_~j~0 168)) (and (<= main_~j~0 110) (<= 110 main_~j~0) (<= main_~i~0 55) (<= 55 main_~i~0)) (and (<= main_~i~0 47) (<= main_~j~0 94) (<= 94 main_~j~0) (<= 47 main_~i~0)) (and (<= 170 main_~j~0) (<= 85 main_~i~0) (<= main_~i~0 85) (<= main_~j~0 170)) (and (<= main_~i~0 13) (<= 13 main_~i~0) (<= main_~j~0 26) (<= 26 main_~j~0))) [2022-04-06 10:41:51,576 INFO L882 garLoopResultBuilder]: For program point mainEXIT(lines 19 29) no Hoare annotation was computed. [2022-04-06 10:41:51,576 INFO L878 garLoopResultBuilder]: At program point L23-3(lines 23 26) the Hoare annotation is: (and (<= main_~j~0 200) (< 199 main_~j~0)) [2022-04-06 10:41:51,576 INFO L882 garLoopResultBuilder]: For program point L27(line 27) no Hoare annotation was computed. [2022-04-06 10:41:51,576 INFO L885 garLoopResultBuilder]: At program point __VERIFIER_assertENTRY(lines 14 18) the Hoare annotation is: true [2022-04-06 10:41:51,576 INFO L882 garLoopResultBuilder]: For program point L15(lines 15 17) no Hoare annotation was computed. [2022-04-06 10:41:51,576 INFO L882 garLoopResultBuilder]: For program point L16(line 16) no Hoare annotation was computed. [2022-04-06 10:41:51,576 INFO L882 garLoopResultBuilder]: For program point L15-2(lines 14 18) no Hoare annotation was computed. [2022-04-06 10:41:51,576 INFO L882 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 16) no Hoare annotation was computed. [2022-04-06 10:41:51,576 INFO L882 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 14 18) no Hoare annotation was computed. [2022-04-06 10:41:51,579 INFO L719 BasicCegarLoop]: Path program histogram: [8, 1, 1] [2022-04-06 10:41:51,579 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-04-06 10:41:51,627 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.04 10:41:51 BasicIcfg [2022-04-06 10:41:51,627 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-04-06 10:41:51,627 INFO L158 Benchmark]: Toolchain (without parser) took 35095.59ms. Allocated memory was 215.0MB in the beginning and 503.3MB in the end (delta: 288.4MB). Free memory was 163.3MB in the beginning and 371.0MB in the end (delta: -207.7MB). Peak memory consumption was 271.8MB. Max. memory is 8.0GB. [2022-04-06 10:41:51,627 INFO L158 Benchmark]: CDTParser took 0.08ms. Allocated memory is still 215.0MB. Free memory was 179.4MB in the beginning and 179.2MB in the end (delta: 150.4kB). There was no memory consumed. Max. memory is 8.0GB. [2022-04-06 10:41:51,628 INFO L158 Benchmark]: CACSL2BoogieTranslator took 166.25ms. Allocated memory is still 215.0MB. Free memory was 163.1MB in the beginning and 192.0MB in the end (delta: -28.9MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2022-04-06 10:41:51,628 INFO L158 Benchmark]: Boogie Preprocessor took 33.69ms. Allocated memory is still 215.0MB. Free memory was 192.0MB in the beginning and 190.6MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-04-06 10:41:51,628 INFO L158 Benchmark]: RCFGBuilder took 231.41ms. Allocated memory is still 215.0MB. Free memory was 190.6MB in the beginning and 180.6MB in the end (delta: 10.1MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2022-04-06 10:41:51,628 INFO L158 Benchmark]: IcfgTransformer took 13.07ms. Allocated memory is still 215.0MB. Free memory was 180.6MB in the beginning and 179.5MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-04-06 10:41:51,628 INFO L158 Benchmark]: TraceAbstraction took 34647.42ms. Allocated memory was 215.0MB in the beginning and 503.3MB in the end (delta: 288.4MB). Free memory was 178.9MB in the beginning and 371.0MB in the end (delta: -192.1MB). Peak memory consumption was 287.6MB. Max. memory is 8.0GB. [2022-04-06 10:41:51,629 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.08ms. Allocated memory is still 215.0MB. Free memory was 179.4MB in the beginning and 179.2MB in the end (delta: 150.4kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 166.25ms. Allocated memory is still 215.0MB. Free memory was 163.1MB in the beginning and 192.0MB in the end (delta: -28.9MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * Boogie Preprocessor took 33.69ms. Allocated memory is still 215.0MB. Free memory was 192.0MB in the beginning and 190.6MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 231.41ms. Allocated memory is still 215.0MB. Free memory was 190.6MB in the beginning and 180.6MB in the end (delta: 10.1MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * IcfgTransformer took 13.07ms. Allocated memory is still 215.0MB. Free memory was 180.6MB in the beginning and 179.5MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * TraceAbstraction took 34647.42ms. Allocated memory was 215.0MB in the beginning and 503.3MB in the end (delta: 288.4MB). Free memory was 178.9MB in the beginning and 371.0MB in the end (delta: -192.1MB). Peak memory consumption was 287.6MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 16]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 20 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 34.6s, OverallIterations: 10, TraceHistogramMax: 101, PathProgramHistogramMax: 8, EmptinessCheckTime: 0.0s, AutomataDifference: 15.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 1.2s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 75 SdHoareTripleChecker+Valid, 3.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 74 mSDsluCounter, 808 SdHoareTripleChecker+Invalid, 3.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 686 mSDsCounter, 508 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 12086 IncrementalHoareTripleChecker+Invalid, 12594 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 508 mSolverCounterUnsat, 122 mSDtfsCounter, 12086 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1624 GetRequests, 644 SyntacticMatches, 6 SemanticMatches, 974 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22650 ImplicationChecksByTransitivity, 23.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=114occurred in iteration=9, InterpolantAutomatonStates: 511, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 10 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 16 PreInvPairs, 118 NumberOfFragments, 1329 HoareAnnotationTreeSize, 16 FomulaSimplifications, 264 FormulaSimplificationTreeSizeReduction, 0.2s HoareSimplificationTime, 7 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 1.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 15.0s InterpolantComputationTime, 859 NumberOfCodeBlocks, 859 NumberOfCodeBlocksAsserted, 94 NumberOfCheckSat, 1196 ConstructedInterpolants, 0 QuantifiedInterpolants, 4408 SizeOfPredicates, 1 NumberOfNonLiveVariables, 1784 ConjunctsInSsa, 394 ConjunctsInUnsatCore, 24 InterpolantComputations, 3 PerfectInterpolantSequences, 5151/37896 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: 23]: Loop Invariant Derived loop invariant: ((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((j <= 190 && 190 <= j) && 95 <= i) && i < 96) || (((38 <= i && 76 <= j) && i <= 38) && j <= 76)) || (((j <= 88 && 88 <= j) && 44 <= i) && i <= 44)) || (((j <= 130 && 130 <= j) && 65 <= i) && i <= 65)) || (((i <= 53 && 53 <= i) && 106 <= j) && j <= 106)) || (((86 <= i && i <= 86) && 172 <= j) && j <= 172)) || (((i <= 93 && 93 <= i) && 186 <= j) && j <= 186)) || (((j <= 72 && 72 <= j) && 36 <= i) && i <= 36)) || (((j <= 12 && 12 <= j) && i <= 6) && 6 <= i)) || (((134 <= j && 67 <= i) && i <= 67) && j <= 134)) || (((90 <= i && j <= 180) && i <= 90) && 180 <= j)) || (((148 <= j && j <= 148) && 74 <= i) && i <= 74)) || (((39 <= i && 78 <= j) && i <= 39) && j <= 78)) || (((23 <= i && i <= 23) && 46 <= j) && j <= 46)) || (((22 <= j && 11 <= i) && j <= 22) && i <= 11)) || (((77 <= i && i <= 77) && 154 <= j) && j <= 154)) || (((136 <= j && j <= 136) && 68 <= i) && i <= 68)) || (((97 <= i && j <= 194) && i < 98) && 194 <= j)) || (((132 <= j && i <= 66) && j <= 132) && 66 <= i)) || ((100 <= i && j <= 200) && 199 < j)) || (((68 <= j && j <= 68) && i <= 34) && 34 <= i)) || (((j <= 92 && 46 <= i) && i <= 46) && 92 <= j)) || (((37 <= i && i <= 37) && j <= 74) && 74 <= j)) || (((20 <= i && j <= 40) && 40 <= j) && i <= 20)) || (((98 <= i && 196 <= j) && i < 99) && j <= 196)) || (((j <= 162 && i <= 81) && 162 <= j) && 81 <= i)) || (((52 <= i && i <= 52) && j <= 104) && 104 <= j)) || (((12 <= i && j <= 24) && i <= 12) && 24 <= j)) || (((31 <= i && i <= 31) && j <= 62) && 62 <= j)) || (((j <= 56 && i <= 28) && 28 <= i) && 56 <= j)) || (((j <= 90 && 90 <= j) && 45 <= i) && i <= 45)) || (((i <= 63 && j <= 126) && 126 <= j) && 63 <= i)) || (((i <= 79 && 158 <= j) && j <= 158) && 79 <= i)) || (((78 <= i && 156 <= j) && i <= 78) && j <= 156)) || (((j <= 100 && 100 <= j) && i <= 50) && 50 <= i)) || (((96 <= j && 48 <= i) && j <= 96) && i <= 48)) || (((j <= 44 && 22 <= i) && i <= 22) && 44 <= j)) || (((i <= 59 && 59 <= i) && 118 <= j) && j <= 118)) || (((150 <= j && j <= 150) && i <= 75) && 75 <= i)) || (((58 <= j && j <= 58) && i <= 29) && 29 <= i)) || (((i <= 16 && j <= 32) && 16 <= i) && 32 <= j)) || (((89 <= i && 178 <= j) && j <= 178) && i <= 89)) || (((30 <= i && i <= 30) && j <= 60) && 60 <= j)) || (((15 <= i && j <= 30) && i <= 15) && 30 <= j)) || (((33 <= i && j <= 66) && 66 <= j) && i <= 33)) || (((i <= 64 && j <= 128) && 64 <= i) && 128 <= j)) || (((j <= 8 && i <= 4) && 8 <= j) && 4 <= i)) || (((9 <= i && 18 <= j) && i <= 9) && j <= 18)) || (((i <= 56 && 56 <= i) && j <= 112) && 112 <= j)) || (((j <= 10 && 10 <= j) && i <= 5) && 5 <= i)) || (((j <= 144 && i <= 72) && 72 <= i) && 144 <= j)) || (((i <= 49 && 49 <= i) && 98 <= j) && j <= 98)) || (((j <= 52 && 52 <= j) && i <= 26) && 26 <= i)) || (((2 <= i && 4 <= j) && j <= 4) && i <= 2)) || (((i <= 92 && 184 <= j) && j <= 184) && 92 <= i)) || (((i <= 60 && 120 <= j) && j <= 120) && 60 <= i)) || (((138 <= j && j <= 138) && 69 <= i) && i <= 69)) || (((19 <= i && j <= 38) && i <= 19) && 38 <= j)) || (((58 <= i && j <= 116) && 116 <= j) && i <= 58)) || (((80 <= i && i <= 80) && 160 <= j) && j <= 160)) || (((114 <= j && j <= 114) && i <= 57) && 57 <= i)) || (((94 <= i && 188 <= j) && j <= 188) && i <= 94)) || (((108 <= j && i <= 54) && j <= 108) && 54 <= i)) || (((51 <= i && i <= 51) && 102 <= j) && j <= 102)) || (((164 <= j && j <= 164) && 82 <= i) && i <= 82)) || (((70 <= j && 35 <= i) && j <= 70) && i <= 35)) || (((64 <= j && i <= 32) && j <= 64) && 32 <= i)) || (((87 <= i && 174 <= j) && j <= 174) && i <= 87)) || (((i <= 76 && 152 <= j) && j <= 152) && 76 <= i)) || (((j <= 2 && i <= 1) && 2 <= j) && 1 <= i)) || (((83 <= i && j <= 166) && i <= 83) && 166 <= j)) || (((i <= 10 && 20 <= j) && 10 <= i) && j <= 20)) || (((i <= 41 && 82 <= j) && 41 <= i) && j <= 82)) || (((j <= 36 && i <= 18) && 18 <= i) && 36 <= j)) || (((i <= 27 && 54 <= j) && j <= 54) && 27 <= i)) || (((50 <= j && 25 <= i) && j <= 50) && i <= 25)) || (((j <= 86 && 86 <= j) && i <= 43) && 43 <= i)) || (((62 <= i && 124 <= j) && i <= 62) && j <= 124)) || (((j <= 142 && 142 <= j) && i <= 71) && 71 <= i)) || (((42 <= i && i <= 42) && 84 <= j) && j <= 84)) || (((j <= 192 && i < 97) && 96 <= i) && 192 <= j)) || (((14 <= j && i <= 7) && j <= 14) && 7 <= i)) || (((j <= 6 && 6 <= j) && 3 <= i) && i <= 3)) || (((j <= 34 && 17 <= i) && i <= 17) && 34 <= j)) || (((40 <= i && 80 <= j) && i <= 40) && j <= 80)) || (((i <= 14 && 14 <= i) && j <= 28) && 28 <= j)) || (((88 <= i && 176 <= j) && j <= 176) && i <= 88)) || (((i <= 0 && 0 <= j) && 0 <= i) && j <= 0)) || (((i <= 70 && 70 <= i) && j <= 140) && 140 <= j)) || (((182 <= j && i <= 91) && 91 <= i) && j <= 182)) || (((24 <= i && j <= 48) && i <= 24) && 48 <= j)) || (((j <= 146 && 146 <= j) && i <= 73) && 73 <= i)) || (((8 <= i && i <= 8) && j <= 16) && 16 <= j)) || (((42 <= j && j <= 42) && i <= 21) && 21 <= i)) || (((j <= 198 && i < 100) && 99 <= i) && 198 <= j)) || (((j <= 122 && 61 <= i) && i <= 61) && 122 <= j)) || (((i <= 84 && 168 <= j) && 84 <= i) && j <= 168)) || (((j <= 110 && 110 <= j) && i <= 55) && 55 <= i)) || (((i <= 47 && j <= 94) && 94 <= j) && 47 <= i)) || (((170 <= j && 85 <= i) && i <= 85) && j <= 170)) || (((i <= 13 && 13 <= i) && j <= 26) && 26 <= j) RESULT: Ultimate proved your program to be correct! [2022-04-06 10:41:51,660 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...