/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/automizer/LoopAccelerationJordanC.epf -i ../../../trunk/examples/svcomp/array-crafted/mapsum5.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-d966a43 [2022-01-31 09:47:51,408 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-31 09:47:51,410 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-31 09:47:51,464 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-31 09:47:51,465 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-31 09:47:51,468 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-31 09:47:51,471 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-31 09:47:51,473 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-31 09:47:51,474 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-31 09:47:51,475 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-31 09:47:51,477 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-31 09:47:51,478 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-31 09:47:51,478 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-31 09:47:51,481 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-31 09:47:51,482 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-31 09:47:51,483 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-31 09:47:51,484 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-31 09:47:51,485 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-31 09:47:51,488 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-31 09:47:51,492 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-31 09:47:51,493 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-31 09:47:51,494 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-31 09:47:51,495 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-31 09:47:51,495 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-31 09:47:51,501 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-31 09:47:51,504 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-31 09:47:51,504 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-31 09:47:51,505 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-31 09:47:51,506 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-31 09:47:51,507 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-31 09:47:51,507 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-31 09:47:51,507 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-31 09:47:51,507 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-31 09:47:51,507 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-31 09:47:51,508 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-31 09:47:51,508 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-31 09:47:51,509 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2022-01-31 09:47:51,518 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-31 09:47:51,518 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-31 09:47:51,519 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-31 09:47:51,519 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-31 09:47:51,519 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-31 09:47:51,519 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-31 09:47:51,519 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-31 09:47:51,519 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-31 09:47:51,520 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-31 09:47:51,520 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-31 09:47:51,520 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-31 09:47:51,520 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-31 09:47:51,520 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-31 09:47:51,521 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-31 09:47:51,521 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-31 09:47:51,521 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-31 09:47:51,521 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-31 09:47:51,521 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-31 09:47:51,521 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-31 09:47:51,521 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-31 09:47:51,521 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-31 09:47:51,522 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-31 09:47:51,522 INFO L138 SettingsManager]: * TransformationType=LOOP_ACCELERATION_JORDAN 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-31 09:47:51,719 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-31 09:47:51,759 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-31 09:47:51,761 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-31 09:47:51,762 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-31 09:47:51,775 INFO L275 PluginConnector]: CDTParser initialized [2022-01-31 09:47:51,777 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-crafted/mapsum5.i [2022-01-31 09:47:51,830 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/beebfcef8/12cf5d835f7e4ef693098443f15c2886/FLAG2dca915fe [2022-01-31 09:47:52,176 INFO L306 CDTParser]: Found 1 translation units. [2022-01-31 09:47:52,177 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-crafted/mapsum5.i [2022-01-31 09:47:52,182 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/beebfcef8/12cf5d835f7e4ef693098443f15c2886/FLAG2dca915fe [2022-01-31 09:47:52,192 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/beebfcef8/12cf5d835f7e4ef693098443f15c2886 [2022-01-31 09:47:52,194 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-31 09:47:52,195 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-31 09:47:52,196 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-31 09:47:52,196 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-31 09:47:52,198 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-31 09:47:52,198 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 09:47:52" (1/1) ... [2022-01-31 09:47:52,199 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a7c3535 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 09:47:52, skipping insertion in model container [2022-01-31 09:47:52,199 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 09:47:52" (1/1) ... [2022-01-31 09:47:52,208 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-31 09:47:52,220 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-31 09:47:52,367 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-crafted/mapsum5.i[1380,1393] [2022-01-31 09:47:52,369 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-31 09:47:52,374 INFO L203 MainTranslator]: Completed pre-run [2022-01-31 09:47:52,387 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-crafted/mapsum5.i[1380,1393] [2022-01-31 09:47:52,388 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-31 09:47:52,397 INFO L208 MainTranslator]: Completed translation [2022-01-31 09:47:52,397 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 09:47:52 WrapperNode [2022-01-31 09:47:52,397 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-31 09:47:52,398 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-31 09:47:52,398 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-31 09:47:52,398 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-31 09:47:52,406 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 09:47:52" (1/1) ... [2022-01-31 09:47:52,406 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 09:47:52" (1/1) ... [2022-01-31 09:47:52,411 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 09:47:52" (1/1) ... [2022-01-31 09:47:52,411 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 09:47:52" (1/1) ... [2022-01-31 09:47:52,416 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 09:47:52" (1/1) ... [2022-01-31 09:47:52,419 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 09:47:52" (1/1) ... [2022-01-31 09:47:52,420 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 09:47:52" (1/1) ... [2022-01-31 09:47:52,422 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-31 09:47:52,422 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-31 09:47:52,422 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-31 09:47:52,423 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-31 09:47:52,423 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 09:47:52" (1/1) ... [2022-01-31 09:47:52,428 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-31 09:47:52,435 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 09:47:52,473 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) [2022-01-31 09:47:52,504 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 [2022-01-31 09:47:52,530 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-01-31 09:47:52,530 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-31 09:47:52,530 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-01-31 09:47:52,530 INFO L138 BoogieDeclarations]: Found implementation of procedure mapsum [2022-01-31 09:47:52,530 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-01-31 09:47:52,530 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-01-31 09:47:52,530 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-01-31 09:47:52,531 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2022-01-31 09:47:52,531 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2022-01-31 09:47:52,531 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-01-31 09:47:52,531 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-31 09:47:52,531 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-01-31 09:47:52,531 INFO L130 BoogieDeclarations]: Found specification of procedure mapsum [2022-01-31 09:47:52,531 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-01-31 09:47:52,531 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-01-31 09:47:52,531 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-31 09:47:52,531 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-01-31 09:47:52,532 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-31 09:47:52,532 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-01-31 09:47:52,532 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-31 09:47:52,532 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-31 09:47:52,600 INFO L234 CfgBuilder]: Building ICFG [2022-01-31 09:47:52,601 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-31 09:47:52,768 INFO L275 CfgBuilder]: Performing block encoding [2022-01-31 09:47:52,772 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-31 09:47:52,772 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2022-01-31 09:47:52,773 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 09:47:52 BoogieIcfgContainer [2022-01-31 09:47:52,774 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-31 09:47:52,774 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-31 09:47:52,774 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-31 09:47:52,775 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-31 09:47:52,780 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 09:47:52" (1/1) ... [2022-01-31 09:47:52,805 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 31.01 09:47:52 BasicIcfg [2022-01-31 09:47:52,805 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-31 09:47:52,806 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-31 09:47:52,806 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-31 09:47:52,808 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-31 09:47:52,808 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.01 09:47:52" (1/4) ... [2022-01-31 09:47:52,809 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e880184 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 09:47:52, skipping insertion in model container [2022-01-31 09:47:52,809 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 09:47:52" (2/4) ... [2022-01-31 09:47:52,809 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e880184 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 09:47:52, skipping insertion in model container [2022-01-31 09:47:52,809 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 09:47:52" (3/4) ... [2022-01-31 09:47:52,810 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e880184 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.01 09:47:52, skipping insertion in model container [2022-01-31 09:47:52,810 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 31.01 09:47:52" (4/4) ... [2022-01-31 09:47:52,810 INFO L111 eAbstractionObserver]: Analyzing ICFG mapsum5.iJordan [2022-01-31 09:47:52,816 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2022-01-31 09:47:52,817 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-31 09:47:52,855 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-31 09:47:52,862 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=ForwardPredicates, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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, mLoopAccelerationTechnique=FAST_UPR [2022-01-31 09:47:52,862 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-31 09:47:52,880 INFO L276 IsEmpty]: Start isEmpty. Operand has 33 states, 23 states have (on average 1.391304347826087) internal successors, (32), 24 states have internal predecessors, (32), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-01-31 09:47:52,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-01-31 09:47:52,886 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 09:47:52,887 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 09:47:52,887 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 09:47:52,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 09:47:52,892 INFO L85 PathProgramCache]: Analyzing trace with hash -1509444960, now seen corresponding path program 1 times [2022-01-31 09:47:52,898 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 09:47:52,899 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554927360] [2022-01-31 09:47:52,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 09:47:52,901 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 09:47:52,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 09:47:53,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 09:47:53,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 09:47:53,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-01-31 09:47:53,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 09:47:53,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-01-31 09:47:53,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 09:47:53,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-01-31 09:47:53,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 09:47:53,127 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-01-31 09:47:53,128 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 09:47:53,128 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1554927360] [2022-01-31 09:47:53,128 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1554927360] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 09:47:53,128 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 09:47:53,128 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-31 09:47:53,130 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119936068] [2022-01-31 09:47:53,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 09:47:53,133 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-31 09:47:53,133 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 09:47:53,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-31 09:47:53,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-31 09:47:53,157 INFO L87 Difference]: Start difference. First operand has 33 states, 23 states have (on average 1.391304347826087) internal successors, (32), 24 states have internal predecessors, (32), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 2 states have internal predecessors, (16), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 09:47:53,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 09:47:53,217 INFO L93 Difference]: Finished difference Result 33 states and 38 transitions. [2022-01-31 09:47:53,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-31 09:47:53,219 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 2 states have internal predecessors, (16), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 33 [2022-01-31 09:47:53,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 09:47:53,227 INFO L225 Difference]: With dead ends: 33 [2022-01-31 09:47:53,228 INFO L226 Difference]: Without dead ends: 27 [2022-01-31 09:47:53,229 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-31 09:47:53,233 INFO L933 BasicCegarLoop]: 36 mSDtfsCounter, 6 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-31 09:47:53,234 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 40 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-31 09:47:53,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-01-31 09:47:53,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2022-01-31 09:47:53,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 19 states have internal predecessors, (22), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 09:47:53,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 31 transitions. [2022-01-31 09:47:53,261 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 31 transitions. Word has length 33 [2022-01-31 09:47:53,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 09:47:53,262 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 31 transitions. [2022-01-31 09:47:53,262 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 2 states have internal predecessors, (16), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 09:47:53,263 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 31 transitions. [2022-01-31 09:47:53,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-01-31 09:47:53,264 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 09:47:53,264 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 09:47:53,265 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-31 09:47:53,265 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 09:47:53,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 09:47:53,265 INFO L85 PathProgramCache]: Analyzing trace with hash -1653642527, now seen corresponding path program 1 times [2022-01-31 09:47:53,266 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 09:47:53,266 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1000832343] [2022-01-31 09:47:53,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 09:47:53,267 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 09:47:53,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 09:47:53,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 09:47:53,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 09:47:53,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-01-31 09:47:53,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 09:47:53,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-01-31 09:47:53,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 09:47:53,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-01-31 09:47:53,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 09:47:53,409 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-01-31 09:47:53,410 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 09:47:53,410 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1000832343] [2022-01-31 09:47:53,410 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1000832343] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 09:47:53,410 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 09:47:53,410 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-31 09:47:53,411 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536748800] [2022-01-31 09:47:53,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 09:47:53,412 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-31 09:47:53,412 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 09:47:53,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-31 09:47:53,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-31 09:47:53,413 INFO L87 Difference]: Start difference. First operand 27 states and 31 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 3 states have internal predecessors, (16), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 09:47:53,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 09:47:53,463 INFO L93 Difference]: Finished difference Result 29 states and 33 transitions. [2022-01-31 09:47:53,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-31 09:47:53,464 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 3 states have internal predecessors, (16), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 33 [2022-01-31 09:47:53,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 09:47:53,465 INFO L225 Difference]: With dead ends: 29 [2022-01-31 09:47:53,466 INFO L226 Difference]: Without dead ends: 29 [2022-01-31 09:47:53,471 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-31 09:47:53,472 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 7 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-31 09:47:53,476 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 42 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-31 09:47:53,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2022-01-31 09:47:53,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 28. [2022-01-31 09:47:53,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 20 states have (on average 1.15) internal successors, (23), 20 states have internal predecessors, (23), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 09:47:53,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2022-01-31 09:47:53,483 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 33 [2022-01-31 09:47:53,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 09:47:53,484 INFO L470 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2022-01-31 09:47:53,484 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 3 states have internal predecessors, (16), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 09:47:53,484 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2022-01-31 09:47:53,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-01-31 09:47:53,485 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 09:47:53,485 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 09:47:53,485 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-31 09:47:53,485 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 09:47:53,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 09:47:53,486 INFO L85 PathProgramCache]: Analyzing trace with hash -20218044, now seen corresponding path program 1 times [2022-01-31 09:47:53,486 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 09:47:53,486 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2000861249] [2022-01-31 09:47:53,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 09:47:53,486 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 09:47:53,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 09:47:53,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 09:47:53,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 09:47:53,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-01-31 09:47:53,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 09:47:53,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-01-31 09:47:53,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 09:47:53,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-01-31 09:47:53,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 09:47:53,603 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-01-31 09:47:53,603 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 09:47:53,603 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2000861249] [2022-01-31 09:47:53,604 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2000861249] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-31 09:47:53,604 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [702219019] [2022-01-31 09:47:53,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 09:47:53,604 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 09:47:53,604 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 09:47:53,605 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) [2022-01-31 09:47:53,649 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-01-31 09:47:53,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 09:47:53,684 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-31 09:47:53,689 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 09:47:53,784 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-01-31 09:47:53,784 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 09:47:53,860 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-01-31 09:47:53,860 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [702219019] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 09:47:53,861 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-31 09:47:53,861 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4, 4] total 10 [2022-01-31 09:47:53,861 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931012941] [2022-01-31 09:47:53,861 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-31 09:47:53,861 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-31 09:47:53,861 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 09:47:53,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-31 09:47:53,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-01-31 09:47:53,862 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand has 10 states, 10 states have (on average 3.5) internal successors, (35), 9 states have internal predecessors, (35), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (8), 2 states have call predecessors, (8), 3 states have call successors, (8) [2022-01-31 09:47:53,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 09:47:53,957 INFO L93 Difference]: Finished difference Result 33 states and 37 transitions. [2022-01-31 09:47:53,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-31 09:47:53,957 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.5) internal successors, (35), 9 states have internal predecessors, (35), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (8), 2 states have call predecessors, (8), 3 states have call successors, (8) Word has length 35 [2022-01-31 09:47:53,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 09:47:53,958 INFO L225 Difference]: With dead ends: 33 [2022-01-31 09:47:53,958 INFO L226 Difference]: Without dead ends: 33 [2022-01-31 09:47:53,958 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2022-01-31 09:47:53,959 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 32 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 09:47:53,959 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [35 Valid, 66 Invalid, 141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 09:47:53,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2022-01-31 09:47:53,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 31. [2022-01-31 09:47:53,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 23 states have (on average 1.1304347826086956) internal successors, (26), 23 states have internal predecessors, (26), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 09:47:53,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 35 transitions. [2022-01-31 09:47:53,962 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 35 transitions. Word has length 35 [2022-01-31 09:47:53,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 09:47:53,962 INFO L470 AbstractCegarLoop]: Abstraction has 31 states and 35 transitions. [2022-01-31 09:47:53,962 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.5) internal successors, (35), 9 states have internal predecessors, (35), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (8), 2 states have call predecessors, (8), 3 states have call successors, (8) [2022-01-31 09:47:53,962 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 35 transitions. [2022-01-31 09:47:53,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-01-31 09:47:53,963 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 09:47:53,963 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 09:47:53,982 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-01-31 09:47:54,180 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 09:47:54,181 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 09:47:54,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 09:47:54,181 INFO L85 PathProgramCache]: Analyzing trace with hash -96915132, now seen corresponding path program 1 times [2022-01-31 09:47:54,181 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 09:47:54,181 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282144711] [2022-01-31 09:47:54,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 09:47:54,182 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 09:47:54,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 09:47:54,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 09:47:54,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 09:47:54,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 09:47:54,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 09:47:54,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-01-31 09:47:54,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 09:47:54,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-01-31 09:47:54,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 09:47:54,284 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-01-31 09:47:54,284 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 09:47:54,284 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282144711] [2022-01-31 09:47:54,284 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1282144711] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 09:47:54,284 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 09:47:54,284 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-31 09:47:54,284 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667650267] [2022-01-31 09:47:54,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 09:47:54,285 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-31 09:47:54,285 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 09:47:54,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-31 09:47:54,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-31 09:47:54,285 INFO L87 Difference]: Start difference. First operand 31 states and 35 transitions. Second operand has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2022-01-31 09:47:54,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 09:47:54,346 INFO L93 Difference]: Finished difference Result 33 states and 37 transitions. [2022-01-31 09:47:54,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-31 09:47:54,347 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 43 [2022-01-31 09:47:54,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 09:47:54,348 INFO L225 Difference]: With dead ends: 33 [2022-01-31 09:47:54,348 INFO L226 Difference]: Without dead ends: 33 [2022-01-31 09:47:54,348 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-01-31 09:47:54,348 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 24 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 09:47:54,349 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [25 Valid, 35 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 09:47:54,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2022-01-31 09:47:54,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 32. [2022-01-31 09:47:54,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 24 states have (on average 1.125) internal successors, (27), 24 states have internal predecessors, (27), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 09:47:54,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 36 transitions. [2022-01-31 09:47:54,352 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 36 transitions. Word has length 43 [2022-01-31 09:47:54,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 09:47:54,353 INFO L470 AbstractCegarLoop]: Abstraction has 32 states and 36 transitions. [2022-01-31 09:47:54,353 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2022-01-31 09:47:54,361 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 36 transitions. [2022-01-31 09:47:54,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-01-31 09:47:54,361 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 09:47:54,361 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 09:47:54,362 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-31 09:47:54,362 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 09:47:54,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 09:47:54,362 INFO L85 PathProgramCache]: Analyzing trace with hash -1754262783, now seen corresponding path program 1 times [2022-01-31 09:47:54,362 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 09:47:54,362 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950503412] [2022-01-31 09:47:54,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 09:47:54,363 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 09:47:54,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 09:47:54,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 09:47:54,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 09:47:54,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 09:47:54,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 09:47:54,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-01-31 09:47:54,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 09:47:54,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-01-31 09:47:54,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 09:47:54,428 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-01-31 09:47:54,428 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 09:47:54,428 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1950503412] [2022-01-31 09:47:54,428 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1950503412] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-31 09:47:54,428 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1498012113] [2022-01-31 09:47:54,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 09:47:54,429 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 09:47:54,429 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 09:47:54,430 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) [2022-01-31 09:47:54,431 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-01-31 09:47:54,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 09:47:54,502 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-31 09:47:54,504 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 09:47:54,627 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-01-31 09:47:54,628 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 09:47:54,730 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-01-31 09:47:54,730 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1498012113] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 09:47:54,730 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-31 09:47:54,730 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 6] total 11 [2022-01-31 09:47:54,731 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38427683] [2022-01-31 09:47:54,731 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-31 09:47:54,731 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-31 09:47:54,731 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 09:47:54,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-31 09:47:54,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2022-01-31 09:47:54,732 INFO L87 Difference]: Start difference. First operand 32 states and 36 transitions. Second operand has 11 states, 11 states have (on average 3.909090909090909) internal successors, (43), 10 states have internal predecessors, (43), 3 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (7), 2 states have call predecessors, (7), 3 states have call successors, (7) [2022-01-31 09:47:54,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 09:47:54,844 INFO L93 Difference]: Finished difference Result 35 states and 39 transitions. [2022-01-31 09:47:54,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-31 09:47:54,845 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.909090909090909) internal successors, (43), 10 states have internal predecessors, (43), 3 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (7), 2 states have call predecessors, (7), 3 states have call successors, (7) Word has length 45 [2022-01-31 09:47:54,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 09:47:54,845 INFO L225 Difference]: With dead ends: 35 [2022-01-31 09:47:54,845 INFO L226 Difference]: Without dead ends: 35 [2022-01-31 09:47:54,846 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 91 SyntacticMatches, 3 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=167, Unknown=0, NotChecked=0, Total=240 [2022-01-31 09:47:54,846 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 27 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 09:47:54,846 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [30 Valid, 88 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 09:47:54,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2022-01-31 09:47:54,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 34. [2022-01-31 09:47:54,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 26 states have (on average 1.1153846153846154) internal successors, (29), 26 states have internal predecessors, (29), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 09:47:54,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 38 transitions. [2022-01-31 09:47:54,849 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 38 transitions. Word has length 45 [2022-01-31 09:47:54,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 09:47:54,849 INFO L470 AbstractCegarLoop]: Abstraction has 34 states and 38 transitions. [2022-01-31 09:47:54,850 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.909090909090909) internal successors, (43), 10 states have internal predecessors, (43), 3 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (7), 2 states have call predecessors, (7), 3 states have call successors, (7) [2022-01-31 09:47:54,850 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 38 transitions. [2022-01-31 09:47:54,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-01-31 09:47:54,850 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 09:47:54,850 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 09:47:54,870 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-01-31 09:47:55,063 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 09:47:55,064 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 09:47:55,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 09:47:55,064 INFO L85 PathProgramCache]: Analyzing trace with hash -610054050, now seen corresponding path program 2 times [2022-01-31 09:47:55,064 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 09:47:55,064 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919153614] [2022-01-31 09:47:55,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 09:47:55,064 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 09:47:55,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 09:47:56,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 09:47:56,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 09:47:56,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 09:47:56,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 09:47:56,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-01-31 09:47:56,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 09:47:56,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-01-31 09:47:56,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 09:47:56,922 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 53 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-01-31 09:47:56,922 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 09:47:56,922 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919153614] [2022-01-31 09:47:56,923 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [919153614] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-31 09:47:56,923 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [707959109] [2022-01-31 09:47:56,923 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-31 09:47:56,923 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 09:47:56,923 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 09:47:56,934 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) [2022-01-31 09:47:56,935 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-01-31 09:47:57,295 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-31 09:47:57,296 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-31 09:47:57,299 WARN L261 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 114 conjunts are in the unsatisfiable core [2022-01-31 09:47:57,304 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 09:47:57,376 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-01-31 09:47:57,466 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 09:47:57,467 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 27 [2022-01-31 09:47:58,257 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 09:47:58,260 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-31 09:47:58,260 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 141 treesize of output 71 [2022-01-31 09:47:59,045 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 09:47:59,047 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-31 09:47:59,047 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 217 treesize of output 112 [2022-01-31 09:47:59,291 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-31 09:47:59,292 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 09:47:59,294 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-31 09:47:59,294 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 154 treesize of output 116 [2022-01-31 09:48:00,230 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 09:48:00,231 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 09:48:00,231 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-31 09:48:00,232 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-31 09:48:00,254 INFO L353 Elim1Store]: treesize reduction 8, result has 71.4 percent of original size [2022-01-31 09:48:00,254 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 323 treesize of output 166 [2022-01-31 09:48:00,524 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-31 09:48:00,524 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 09:48:08,620 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 383 treesize of output 351 [2022-01-31 09:48:08,675 INFO L353 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2022-01-31 09:48:08,676 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 9072 treesize of output 8432