/usr/bin/java -ea -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-lit/gcnr2008.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-fb4f59a-m [2022-04-27 21:39:57,424 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-04-27 21:39:57,426 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-04-27 21:39:57,459 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-04-27 21:39:57,477 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-04-27 21:39:57,479 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-04-27 21:39:57,479 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-04-27 21:39:57,482 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-04-27 21:39:57,483 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-04-27 21:39:57,483 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-04-27 21:39:57,485 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-04-27 21:39:57,490 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-04-27 21:39:57,492 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-04-27 21:39:57,493 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-04-27 21:39:57,493 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-04-27 21:39:57,494 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-04-27 21:39:57,495 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-04-27 21:39:57,502 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-04-27 21:39:57,509 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-04-27 21:39:57,510 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-04-27 21:39:57,511 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-04-27 21:39:57,512 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/loopacceleration/qvasr/qvasr_64.epf [2022-04-27 21:39:57,539 INFO L113 SettingsManager]: Loading preferences was successful [2022-04-27 21:39:57,539 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-04-27 21:39:57,540 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-04-27 21:39:57,540 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-04-27 21:39:57,541 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-04-27 21:39:57,541 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-04-27 21:39:57,541 INFO L138 SettingsManager]: * Use SBE=true [2022-04-27 21:39:57,541 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-04-27 21:39:57,542 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-04-27 21:39:57,542 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-04-27 21:39:57,542 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-04-27 21:39:57,542 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-04-27 21:39:57,543 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-04-27 21:39:57,543 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-04-27 21:39:57,543 INFO L138 SettingsManager]: * Use constant arrays=true [2022-04-27 21:39:57,543 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-04-27 21:39:57,543 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-04-27 21:39:57,543 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-04-27 21:39:57,543 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-04-27 21:39:57,543 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-27 21:39:57,544 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-04-27 21:39:57,544 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-04-27 21:39:57,544 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-04-27 21:39:57,544 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-04-27 21:39:57,544 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-04-27 21:39:57,544 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-04-27 21:39:57,545 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-04-27 21:39:57,545 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-04-27 21:39:57,546 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-04-27 21:39:57,546 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-04-27 21:39:57,752 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-04-27 21:39:57,770 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-04-27 21:39:57,772 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-04-27 21:39:57,773 INFO L271 PluginConnector]: Initializing CDTParser... [2022-04-27 21:39:57,773 INFO L275 PluginConnector]: CDTParser initialized [2022-04-27 21:39:57,774 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/gcnr2008.i [2022-04-27 21:39:57,819 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4fd95ed1a/b6ca6f0156444819a74c6fbaf460632e/FLAG3c2a50ae7 [2022-04-27 21:39:58,264 INFO L306 CDTParser]: Found 1 translation units. [2022-04-27 21:39:58,264 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/gcnr2008.i [2022-04-27 21:39:58,271 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4fd95ed1a/b6ca6f0156444819a74c6fbaf460632e/FLAG3c2a50ae7 [2022-04-27 21:39:58,293 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4fd95ed1a/b6ca6f0156444819a74c6fbaf460632e [2022-04-27 21:39:58,295 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-04-27 21:39:58,297 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-04-27 21:39:58,299 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-04-27 21:39:58,299 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-04-27 21:39:58,303 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-04-27 21:39:58,304 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.04 09:39:58" (1/1) ... [2022-04-27 21:39:58,305 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@cfa858d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.04 09:39:58, skipping insertion in model container [2022-04-27 21:39:58,305 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.04 09:39:58" (1/1) ... [2022-04-27 21:39:58,311 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-04-27 21:39:58,325 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-04-27 21:39:58,517 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-lit/gcnr2008.i[895,908] [2022-04-27 21:39:58,559 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-27 21:39:58,567 INFO L203 MainTranslator]: Completed pre-run [2022-04-27 21:39:58,581 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-lit/gcnr2008.i[895,908] [2022-04-27 21:39:58,590 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-27 21:39:58,601 INFO L208 MainTranslator]: Completed translation [2022-04-27 21:39:58,602 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.04 09:39:58 WrapperNode [2022-04-27 21:39:58,602 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-04-27 21:39:58,603 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-04-27 21:39:58,604 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-04-27 21:39:58,604 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-04-27 21:39:58,613 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.04 09:39:58" (1/1) ... [2022-04-27 21:39:58,613 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.04 09:39:58" (1/1) ... [2022-04-27 21:39:58,620 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.04 09:39:58" (1/1) ... [2022-04-27 21:39:58,620 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.04 09:39:58" (1/1) ... [2022-04-27 21:39:58,634 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.04 09:39:58" (1/1) ... [2022-04-27 21:39:58,641 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.04 09:39:58" (1/1) ... [2022-04-27 21:39:58,645 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.04 09:39:58" (1/1) ... [2022-04-27 21:39:58,649 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-04-27 21:39:58,650 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-04-27 21:39:58,650 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-04-27 21:39:58,650 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-04-27 21:39:58,651 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.04 09:39:58" (1/1) ... [2022-04-27 21:39:58,658 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-27 21:39:58,667 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-27 21:39:58,678 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) [2022-04-27 21:39:58,687 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 [2022-04-27 21:39:58,710 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-04-27 21:39:58,711 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-04-27 21:39:58,711 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-04-27 21:39:58,711 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-04-27 21:39:58,711 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-04-27 21:39:58,712 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-04-27 21:39:58,712 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-04-27 21:39:58,713 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-04-27 21:39:58,713 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2022-04-27 21:39:58,713 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2022-04-27 21:39:58,714 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-04-27 21:39:58,714 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-04-27 21:39:58,714 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-04-27 21:39:58,714 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-04-27 21:39:58,714 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-04-27 21:39:58,714 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-04-27 21:39:58,714 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-04-27 21:39:58,714 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-04-27 21:39:58,715 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-04-27 21:39:58,715 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-04-27 21:39:58,715 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-04-27 21:39:58,715 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-04-27 21:39:58,768 INFO L234 CfgBuilder]: Building ICFG [2022-04-27 21:39:58,769 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-04-27 21:39:58,981 INFO L275 CfgBuilder]: Performing block encoding [2022-04-27 21:39:58,987 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-04-27 21:39:58,987 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-04-27 21:39:58,988 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.04 09:39:58 BoogieIcfgContainer [2022-04-27 21:39:58,988 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-04-27 21:39:58,989 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-04-27 21:39:58,989 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-04-27 21:39:58,994 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-04-27 21:39:58,997 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.04 09:39:58" (1/1) ... [2022-04-27 21:39:58,999 INFO L168 ansformationObserver]: Applying ICFG transformation LOOP_ACCELERATION_QVASR [2022-04-27 21:39:59,065 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 27.04 09:39:59 BasicIcfg [2022-04-27 21:39:59,065 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-04-27 21:39:59,067 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-04-27 21:39:59,067 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-04-27 21:39:59,069 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-04-27 21:39:59,070 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.04 09:39:58" (1/4) ... [2022-04-27 21:39:59,070 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33d6fee6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.04 09:39:59, skipping insertion in model container [2022-04-27 21:39:59,070 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.04 09:39:58" (2/4) ... [2022-04-27 21:39:59,071 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33d6fee6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.04 09:39:59, skipping insertion in model container [2022-04-27 21:39:59,071 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.04 09:39:58" (3/4) ... [2022-04-27 21:39:59,071 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33d6fee6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.04 09:39:59, skipping insertion in model container [2022-04-27 21:39:59,071 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 27.04 09:39:59" (4/4) ... [2022-04-27 21:39:59,072 INFO L111 eAbstractionObserver]: Analyzing ICFG gcnr2008.iqvasr [2022-04-27 21:39:59,101 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-04-27 21:39:59,101 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-04-27 21:39:59,141 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-27 21:39:59,147 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=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, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@1605c50b, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@58633871 [2022-04-27 21:39:59,148 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-04-27 21:39:59,163 INFO L276 IsEmpty]: Start isEmpty. Operand has 25 states, 17 states have (on average 1.4705882352941178) internal successors, (25), 18 states have internal predecessors, (25), 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) [2022-04-27 21:39:59,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-04-27 21:39:59,168 INFO L187 NwaCegarLoop]: Found error trace [2022-04-27 21:39:59,169 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-27 21:39:59,169 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-27 21:39:59,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-27 21:39:59,174 INFO L85 PathProgramCache]: Analyzing trace with hash -108758017, now seen corresponding path program 1 times [2022-04-27 21:39:59,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-27 21:39:59,188 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917426465] [2022-04-27 21:39:59,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-27 21:39:59,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-27 21:39:59,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-27 21:39:59,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-27 21:39:59,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-27 21:39:59,385 INFO L290 TraceCheckUtils]: 0: Hoare triple {33#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} [79] ULTIMATE.initENTRY-->ULTIMATE.initFINAL: Formula: (let ((.cse0 (select |v_#memory_int_1| 1))) (and (= 48 (select .cse0 0)) (= (select |v_#valid_1| 2) 1) (= (select |v_#valid_1| 0) 0) (< 0 |v_#StackHeapBarrier_1|) (= |v_#NULL.base_1| 0) (= (select |v_#length_1| 2) 9) (= (select |v_#valid_1| 1) 1) (= 2 (select |v_#length_1| 1)) (= (select .cse0 1) 0) (= |v_#NULL.offset_1| 0))) InVars {#memory_int=|v_#memory_int_1|, #StackHeapBarrier=|v_#StackHeapBarrier_1|, #length=|v_#length_1|, #valid=|v_#valid_1|} OutVars{#StackHeapBarrier=|v_#StackHeapBarrier_1|, #valid=|v_#valid_1|, #memory_int=|v_#memory_int_1|, #NULL.offset=|v_#NULL.offset_1|, #length=|v_#length_1|, #NULL.base=|v_#NULL.base_1|} AuxVars[] AssignedVars[#NULL.offset, #NULL.base] {28#true} is VALID [2022-04-27 21:39:59,385 INFO L290 TraceCheckUtils]: 1: Hoare triple {28#true} [82] ULTIMATE.initFINAL-->ULTIMATE.initEXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {28#true} is VALID [2022-04-27 21:39:59,385 INFO L284 TraceCheckUtils]: 2: Hoare quadruple {28#true} {28#true} [105] ULTIMATE.initEXIT-->L-1: AOR: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] LVA: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {28#true} is VALID [2022-04-27 21:39:59,388 INFO L272 TraceCheckUtils]: 0: Hoare triple {28#true} [77] ULTIMATE.startENTRY-->ULTIMATE.initENTRY: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {33#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} is VALID [2022-04-27 21:39:59,389 INFO L290 TraceCheckUtils]: 1: Hoare triple {33#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} [79] ULTIMATE.initENTRY-->ULTIMATE.initFINAL: Formula: (let ((.cse0 (select |v_#memory_int_1| 1))) (and (= 48 (select .cse0 0)) (= (select |v_#valid_1| 2) 1) (= (select |v_#valid_1| 0) 0) (< 0 |v_#StackHeapBarrier_1|) (= |v_#NULL.base_1| 0) (= (select |v_#length_1| 2) 9) (= (select |v_#valid_1| 1) 1) (= 2 (select |v_#length_1| 1)) (= (select .cse0 1) 0) (= |v_#NULL.offset_1| 0))) InVars {#memory_int=|v_#memory_int_1|, #StackHeapBarrier=|v_#StackHeapBarrier_1|, #length=|v_#length_1|, #valid=|v_#valid_1|} OutVars{#StackHeapBarrier=|v_#StackHeapBarrier_1|, #valid=|v_#valid_1|, #memory_int=|v_#memory_int_1|, #NULL.offset=|v_#NULL.offset_1|, #length=|v_#length_1|, #NULL.base=|v_#NULL.base_1|} AuxVars[] AssignedVars[#NULL.offset, #NULL.base] {28#true} is VALID [2022-04-27 21:39:59,389 INFO L290 TraceCheckUtils]: 2: Hoare triple {28#true} [82] ULTIMATE.initFINAL-->ULTIMATE.initEXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {28#true} is VALID [2022-04-27 21:39:59,390 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {28#true} {28#true} [105] ULTIMATE.initEXIT-->L-1: AOR: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] LVA: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {28#true} is VALID [2022-04-27 21:39:59,390 INFO L272 TraceCheckUtils]: 4: Hoare triple {28#true} [78] L-1-->mainENTRY: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {28#true} is VALID [2022-04-27 21:39:59,390 INFO L290 TraceCheckUtils]: 5: Hoare triple {28#true} [81] mainENTRY-->L27-3: Formula: (and (= v_main_~x~0_6 v_main_~y~0_6) (= v_main_~w~0_3 0) (= v_main_~w~0_3 v_main_~z~0_3) (= v_main_~y~0_6 v_main_~z~0_3)) InVars {} OutVars{main_~y~0=v_main_~y~0_6, main_~w~0=v_main_~w~0_3, main_~x~0=v_main_~x~0_6, main_~z~0=v_main_~z~0_3} AuxVars[] AssignedVars[main_~w~0, main_~x~0, main_~z~0, main_~y~0] {28#true} is VALID [2022-04-27 21:39:59,391 INFO L290 TraceCheckUtils]: 6: Hoare triple {28#true} [83] L27-3-->L27-4: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] {29#false} is VALID [2022-04-27 21:39:59,392 INFO L272 TraceCheckUtils]: 7: Hoare triple {29#false} [85] L27-4-->__VERIFIER_assertENTRY: Formula: (= (ite (and (<= 4 v_main_~x~0_12) (<= v_main_~y~0_14 2)) 1 0) |v___VERIFIER_assert_#in~condInParam_1|) InVars {main_~x~0=v_main_~x~0_12, main_~y~0=v_main_~y~0_14} OutVars{__VERIFIER_assert_#in~cond=|v___VERIFIER_assert_#in~condInParam_1|} AuxVars[] AssignedVars[__VERIFIER_assert_#in~cond, main_~x~0, main_~y~0] {29#false} is VALID [2022-04-27 21:39:59,392 INFO L290 TraceCheckUtils]: 8: Hoare triple {29#false} [89] __VERIFIER_assertENTRY-->L18: Formula: (= v___VERIFIER_assert_~cond_2 |v___VERIFIER_assert_#in~cond_1|) InVars {__VERIFIER_assert_#in~cond=|v___VERIFIER_assert_#in~cond_1|} OutVars{__VERIFIER_assert_#in~cond=|v___VERIFIER_assert_#in~cond_1|, __VERIFIER_assert_~cond=v___VERIFIER_assert_~cond_2} AuxVars[] AssignedVars[__VERIFIER_assert_~cond] {29#false} is VALID [2022-04-27 21:39:59,392 INFO L290 TraceCheckUtils]: 9: Hoare triple {29#false} [93] L18-->L19: Formula: (= v___VERIFIER_assert_~cond_3 0) InVars {__VERIFIER_assert_~cond=v___VERIFIER_assert_~cond_3} OutVars{__VERIFIER_assert_~cond=v___VERIFIER_assert_~cond_3} AuxVars[] AssignedVars[] {29#false} is VALID [2022-04-27 21:39:59,392 INFO L290 TraceCheckUtils]: 10: Hoare triple {29#false} [98] L19-->__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {29#false} is VALID [2022-04-27 21:39:59,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-27 21:39:59,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-27 21:39:59,394 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1917426465] [2022-04-27 21:39:59,395 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1917426465] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-27 21:39:59,395 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-27 21:39:59,395 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-04-27 21:39:59,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819441215] [2022-04-27 21:39:59,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-27 21:39:59,402 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 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 11 [2022-04-27 21:39:59,403 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-27 21:39:59,405 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 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) [2022-04-27 21:39:59,436 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 11 edges. 11 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-27 21:39:59,436 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-27 21:39:59,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-27 21:39:59,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-27 21:39:59,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-27 21:39:59,457 INFO L87 Difference]: Start difference. First operand has 25 states, 17 states have (on average 1.4705882352941178) internal successors, (25), 18 states have internal predecessors, (25), 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 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 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) [2022-04-27 21:39:59,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-27 21:39:59,557 INFO L93 Difference]: Finished difference Result 37 states and 44 transitions. [2022-04-27 21:39:59,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-27 21:39:59,559 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 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 11 [2022-04-27 21:39:59,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-27 21:39:59,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 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) [2022-04-27 21:39:59,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 44 transitions. [2022-04-27 21:39:59,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 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) [2022-04-27 21:39:59,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 44 transitions. [2022-04-27 21:39:59,574 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 3 states and 44 transitions. [2022-04-27 21:39:59,639 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 44 edges. 44 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-27 21:39:59,649 INFO L225 Difference]: With dead ends: 37 [2022-04-27 21:39:59,650 INFO L226 Difference]: Without dead ends: 18 [2022-04-27 21:39:59,653 INFO L412 NwaCegarLoop]: 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 [2022-04-27 21:39:59,659 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 20 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 31 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 [2022-04-27 21:39:59,661 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 31 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-27 21:39:59,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2022-04-27 21:39:59,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2022-04-27 21:39:59,693 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-27 21:39:59,693 INFO L82 GeneralOperation]: Start isEquivalent. First operand 18 states. Second operand has 18 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 13 states have internal predecessors, (18), 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) [2022-04-27 21:39:59,694 INFO L74 IsIncluded]: Start isIncluded. First operand 18 states. Second operand has 18 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 13 states have internal predecessors, (18), 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) [2022-04-27 21:39:59,695 INFO L87 Difference]: Start difference. First operand 18 states. Second operand has 18 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 13 states have internal predecessors, (18), 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) [2022-04-27 21:39:59,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-27 21:39:59,699 INFO L93 Difference]: Finished difference Result 18 states and 22 transitions. [2022-04-27 21:39:59,699 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 22 transitions. [2022-04-27 21:39:59,700 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-27 21:39:59,700 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-27 21:39:59,700 INFO L74 IsIncluded]: Start isIncluded. First operand has 18 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 13 states have internal predecessors, (18), 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) Second operand 18 states. [2022-04-27 21:39:59,701 INFO L87 Difference]: Start difference. First operand has 18 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 13 states have internal predecessors, (18), 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) Second operand 18 states. [2022-04-27 21:39:59,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-27 21:39:59,709 INFO L93 Difference]: Finished difference Result 18 states and 22 transitions. [2022-04-27 21:39:59,709 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 22 transitions. [2022-04-27 21:39:59,710 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-27 21:39:59,710 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-27 21:39:59,710 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-27 21:39:59,711 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-27 21:39:59,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 13 states have internal predecessors, (18), 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) [2022-04-27 21:39:59,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 22 transitions. [2022-04-27 21:39:59,718 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 22 transitions. Word has length 11 [2022-04-27 21:39:59,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-27 21:39:59,723 INFO L495 AbstractCegarLoop]: Abstraction has 18 states and 22 transitions. [2022-04-27 21:39:59,723 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 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) [2022-04-27 21:39:59,723 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 22 transitions. [2022-04-27 21:39:59,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-04-27 21:39:59,724 INFO L187 NwaCegarLoop]: Found error trace [2022-04-27 21:39:59,725 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-27 21:39:59,725 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-04-27 21:39:59,725 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-27 21:39:59,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-27 21:39:59,726 INFO L85 PathProgramCache]: Analyzing trace with hash 952898376, now seen corresponding path program 1 times [2022-04-27 21:39:59,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-27 21:39:59,727 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2104296559] [2022-04-27 21:39:59,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-27 21:39:59,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-27 21:39:59,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-27 21:39:59,765 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-04-27 21:39:59,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-27 21:39:59,806 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-04-27 21:39:59,806 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-04-27 21:39:59,808 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-04-27 21:39:59,809 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-04-27 21:39:59,812 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1] [2022-04-27 21:39:59,815 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-04-27 21:39:59,839 WARN L170 areAnnotationChecker]: ULTIMATE.startENTRY has no Hoare annotation [2022-04-27 21:39:59,839 WARN L170 areAnnotationChecker]: ULTIMATE.initENTRY has no Hoare annotation [2022-04-27 21:39:59,839 WARN L170 areAnnotationChecker]: mainENTRY has no Hoare annotation [2022-04-27 21:39:59,839 WARN L170 areAnnotationChecker]: __VERIFIER_assertENTRY has no Hoare annotation [2022-04-27 21:39:59,839 WARN L170 areAnnotationChecker]: ULTIMATE.initFINAL has no Hoare annotation [2022-04-27 21:39:59,839 WARN L170 areAnnotationChecker]: L27-3 has no Hoare annotation [2022-04-27 21:39:59,839 WARN L170 areAnnotationChecker]: L27-3 has no Hoare annotation [2022-04-27 21:39:59,839 WARN L170 areAnnotationChecker]: L18 has no Hoare annotation [2022-04-27 21:39:59,840 WARN L170 areAnnotationChecker]: L18 has no Hoare annotation [2022-04-27 21:39:59,840 WARN L170 areAnnotationChecker]: ULTIMATE.initEXIT has no Hoare annotation [2022-04-27 21:39:59,840 WARN L170 areAnnotationChecker]: L27-4 has no Hoare annotation [2022-04-27 21:39:59,840 WARN L170 areAnnotationChecker]: L27-1 has no Hoare annotation [2022-04-27 21:39:59,840 WARN L170 areAnnotationChecker]: L27-1 has no Hoare annotation [2022-04-27 21:39:59,840 WARN L170 areAnnotationChecker]: L19 has no Hoare annotation [2022-04-27 21:39:59,840 WARN L170 areAnnotationChecker]: L19 has no Hoare annotation [2022-04-27 21:39:59,840 WARN L170 areAnnotationChecker]: L18-2 has no Hoare annotation [2022-04-27 21:39:59,840 WARN L170 areAnnotationChecker]: L-1 has no Hoare annotation [2022-04-27 21:39:59,841 WARN L170 areAnnotationChecker]: L28 has no Hoare annotation [2022-04-27 21:39:59,841 WARN L170 areAnnotationChecker]: L28 has no Hoare annotation [2022-04-27 21:39:59,841 WARN L170 areAnnotationChecker]: __VERIFIER_assertEXIT has no Hoare annotation [2022-04-27 21:39:59,841 WARN L170 areAnnotationChecker]: L36-2 has no Hoare annotation [2022-04-27 21:39:59,841 WARN L170 areAnnotationChecker]: L31 has no Hoare annotation [2022-04-27 21:39:59,841 WARN L170 areAnnotationChecker]: L31 has no Hoare annotation [2022-04-27 21:39:59,841 WARN L170 areAnnotationChecker]: L42 has no Hoare annotation [2022-04-27 21:39:59,841 WARN L170 areAnnotationChecker]: L32 has no Hoare annotation [2022-04-27 21:39:59,841 WARN L170 areAnnotationChecker]: L32 has no Hoare annotation [2022-04-27 21:39:59,841 WARN L170 areAnnotationChecker]: L36 has no Hoare annotation [2022-04-27 21:39:59,842 WARN L170 areAnnotationChecker]: L36 has no Hoare annotation [2022-04-27 21:39:59,842 WARN L170 areAnnotationChecker]: mainFINAL has no Hoare annotation [2022-04-27 21:39:59,842 WARN L170 areAnnotationChecker]: mainEXIT has no Hoare annotation [2022-04-27 21:39:59,842 WARN L170 areAnnotationChecker]: ULTIMATE.startFINAL has no Hoare annotation [2022-04-27 21:39:59,842 INFO L163 areAnnotationChecker]: CFG has 0 edges. 0 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. 0 times interpolants missing. [2022-04-27 21:39:59,843 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.04 09:39:59 BasicIcfg [2022-04-27 21:39:59,843 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-04-27 21:39:59,844 INFO L158 Benchmark]: Toolchain (without parser) took 1547.37ms. Allocated memory was 198.2MB in the beginning and 297.8MB in the end (delta: 99.6MB). Free memory was 140.6MB in the beginning and 214.5MB in the end (delta: -73.9MB). Peak memory consumption was 23.9MB. Max. memory is 8.0GB. [2022-04-27 21:39:59,845 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 198.2MB. Free memory is still 156.7MB. There was no memory consumed. Max. memory is 8.0GB. [2022-04-27 21:39:59,845 INFO L158 Benchmark]: CACSL2BoogieTranslator took 302.75ms. Allocated memory was 198.2MB in the beginning and 297.8MB in the end (delta: 99.6MB). Free memory was 140.3MB in the beginning and 266.9MB in the end (delta: -126.6MB). Peak memory consumption was 8.2MB. Max. memory is 8.0GB. [2022-04-27 21:39:59,845 INFO L158 Benchmark]: Boogie Preprocessor took 46.02ms. Allocated memory is still 297.8MB. Free memory was 266.9MB in the beginning and 265.4MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-04-27 21:39:59,848 INFO L158 Benchmark]: RCFGBuilder took 338.55ms. Allocated memory is still 297.8MB. Free memory was 265.4MB in the beginning and 253.5MB in the end (delta: 11.9MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2022-04-27 21:39:59,849 INFO L158 Benchmark]: IcfgTransformer took 76.39ms. Allocated memory is still 297.8MB. Free memory was 253.5MB in the beginning and 251.8MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-04-27 21:39:59,849 INFO L158 Benchmark]: TraceAbstraction took 776.16ms. Allocated memory is still 297.8MB. Free memory was 251.4MB in the beginning and 214.5MB in the end (delta: 37.0MB). Peak memory consumption was 36.7MB. Max. memory is 8.0GB. [2022-04-27 21:39:59,855 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - AssertionsEnabledResult: Assertions are enabled Assertions are enabled - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 198.2MB. Free memory is still 156.7MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 302.75ms. Allocated memory was 198.2MB in the beginning and 297.8MB in the end (delta: 99.6MB). Free memory was 140.3MB in the beginning and 266.9MB in the end (delta: -126.6MB). Peak memory consumption was 8.2MB. Max. memory is 8.0GB. * Boogie Preprocessor took 46.02ms. Allocated memory is still 297.8MB. Free memory was 266.9MB in the beginning and 265.4MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 338.55ms. Allocated memory is still 297.8MB. Free memory was 265.4MB in the beginning and 253.5MB in the end (delta: 11.9MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * IcfgTransformer took 76.39ms. Allocated memory is still 297.8MB. Free memory was 253.5MB in the beginning and 251.8MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * TraceAbstraction took 776.16ms. Allocated memory is still 297.8MB. Free memory was 251.4MB in the beginning and 214.5MB in the end (delta: 37.0MB). Peak memory consumption was 36.7MB. 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 - CounterExampleResult [Line: 19]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L25] int x,y,z,w; [L26] EXPR w = 0 [L26] EXPR z = w = 0 [L26] EXPR y = z = w = 0 [L26] x = y = z = w = 0 VAL [w=0, x=0, y=0, z=0] [L27] COND FALSE !(__VERIFIER_nondet_int() && y < 10000) [L42] CALL __VERIFIER_assert(x >= 4 && y <= 2) VAL [\old(cond)=0] [L18] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L19] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 25 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.7s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 21 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 20 mSDsluCounter, 31 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 3 mSDsCounter, 2 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3 IncrementalHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2 mSolverCounterUnsat, 28 mSDtfsCounter, 3 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=25occurred in iteration=0, InterpolantAutomatonStates: 3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 23 NumberOfCodeBlocks, 23 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 10 ConstructedInterpolants, 0 QuantifiedInterpolants, 16 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2022-04-27 21:39:59,890 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...