/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/loops/for_bounded_loop1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-fb4f59a-m [2022-04-27 21:05:26,619 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-04-27 21:05:26,620 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-04-27 21:05:26,639 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-04-27 21:05:26,644 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-04-27 21:05:26,645 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-04-27 21:05:26,646 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-04-27 21:05:26,646 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-04-27 21:05:26,647 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-04-27 21:05:26,647 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-04-27 21:05:26,649 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-04-27 21:05:26,650 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-04-27 21:05:26,651 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-04-27 21:05:26,651 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-04-27 21:05:26,652 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-04-27 21:05:26,653 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-04-27 21:05:26,653 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-04-27 21:05:26,655 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-04-27 21:05:26,660 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-04-27 21:05:26,661 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-04-27 21:05:26,661 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-04-27 21:05:26,662 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 21:05:26,677 INFO L113 SettingsManager]: Loading preferences was successful [2022-04-27 21:05:26,677 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-04-27 21:05:26,678 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-04-27 21:05:26,678 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-04-27 21:05:26,678 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-04-27 21:05:26,678 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-04-27 21:05:26,678 INFO L138 SettingsManager]: * Use SBE=true [2022-04-27 21:05:26,678 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-04-27 21:05:26,678 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-04-27 21:05:26,679 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-04-27 21:05:26,679 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-04-27 21:05:26,679 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-04-27 21:05:26,679 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-04-27 21:05:26,679 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-04-27 21:05:26,679 INFO L138 SettingsManager]: * Use constant arrays=true [2022-04-27 21:05:26,679 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-04-27 21:05:26,679 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-04-27 21:05:26,679 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-04-27 21:05:26,679 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-04-27 21:05:26,679 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-27 21:05:26,680 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-04-27 21:05:26,680 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-04-27 21:05:26,680 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-04-27 21:05:26,680 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-04-27 21:05:26,680 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-04-27 21:05:26,680 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-04-27 21:05:26,680 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-04-27 21:05:26,680 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-04-27 21:05:26,681 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-04-27 21:05:26,681 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-04-27 21:05:26,867 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-04-27 21:05:26,881 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-04-27 21:05:26,884 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-04-27 21:05:26,885 INFO L271 PluginConnector]: Initializing CDTParser... [2022-04-27 21:05:26,885 INFO L275 PluginConnector]: CDTParser initialized [2022-04-27 21:05:26,886 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/for_bounded_loop1.c [2022-04-27 21:05:26,932 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4f755e9f5/539226f8b42442189ba7580717a72c0b/FLAG0320435e0 [2022-04-27 21:05:27,277 INFO L306 CDTParser]: Found 1 translation units. [2022-04-27 21:05:27,277 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/for_bounded_loop1.c [2022-04-27 21:05:27,281 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4f755e9f5/539226f8b42442189ba7580717a72c0b/FLAG0320435e0 [2022-04-27 21:05:27,290 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4f755e9f5/539226f8b42442189ba7580717a72c0b [2022-04-27 21:05:27,292 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-04-27 21:05:27,293 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-04-27 21:05:27,294 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-04-27 21:05:27,294 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-04-27 21:05:27,296 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-04-27 21:05:27,297 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.04 09:05:27" (1/1) ... [2022-04-27 21:05:27,298 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2cc28d67 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.04 09:05:27, skipping insertion in model container [2022-04-27 21:05:27,298 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.04 09:05:27" (1/1) ... [2022-04-27 21:05:27,302 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-04-27 21:05:27,312 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-04-27 21:05:27,430 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops/for_bounded_loop1.c[416,429] [2022-04-27 21:05:27,440 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-27 21:05:27,446 INFO L203 MainTranslator]: Completed pre-run [2022-04-27 21:05:27,454 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops/for_bounded_loop1.c[416,429] [2022-04-27 21:05:27,459 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-27 21:05:27,468 INFO L208 MainTranslator]: Completed translation [2022-04-27 21:05:27,468 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.04 09:05:27 WrapperNode [2022-04-27 21:05:27,468 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-04-27 21:05:27,469 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-04-27 21:05:27,469 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-04-27 21:05:27,469 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-04-27 21:05:27,476 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.04 09:05:27" (1/1) ... [2022-04-27 21:05:27,477 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.04 09:05:27" (1/1) ... [2022-04-27 21:05:27,481 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.04 09:05:27" (1/1) ... [2022-04-27 21:05:27,481 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.04 09:05:27" (1/1) ... [2022-04-27 21:05:27,485 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.04 09:05:27" (1/1) ... [2022-04-27 21:05:27,488 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.04 09:05:27" (1/1) ... [2022-04-27 21:05:27,488 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.04 09:05:27" (1/1) ... [2022-04-27 21:05:27,490 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-04-27 21:05:27,490 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-04-27 21:05:27,490 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-04-27 21:05:27,490 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-04-27 21:05:27,491 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.04 09:05:27" (1/1) ... [2022-04-27 21:05:27,501 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-27 21:05:27,509 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-27 21:05:27,519 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 21:05:27,536 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 21:05:27,547 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-04-27 21:05:27,547 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-04-27 21:05:27,547 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-04-27 21:05:27,547 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-04-27 21:05:27,547 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-04-27 21:05:27,547 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-04-27 21:05:27,547 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-04-27 21:05:27,547 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-04-27 21:05:27,548 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-04-27 21:05:27,548 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-04-27 21:05:27,548 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-04-27 21:05:27,548 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-04-27 21:05:27,548 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-04-27 21:05:27,548 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-04-27 21:05:27,548 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-04-27 21:05:27,548 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-04-27 21:05:27,548 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-04-27 21:05:27,548 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-04-27 21:05:27,548 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-04-27 21:05:27,548 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-04-27 21:05:27,596 INFO L234 CfgBuilder]: Building ICFG [2022-04-27 21:05:27,597 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-04-27 21:05:27,703 INFO L275 CfgBuilder]: Performing block encoding [2022-04-27 21:05:27,708 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-04-27 21:05:27,708 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-04-27 21:05:27,709 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.04 09:05:27 BoogieIcfgContainer [2022-04-27 21:05:27,709 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-04-27 21:05:27,710 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-04-27 21:05:27,710 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-04-27 21:05:27,711 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-04-27 21:05:27,713 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.04 09:05:27" (1/1) ... [2022-04-27 21:05:27,715 INFO L168 ansformationObserver]: Applying ICFG transformation LOOP_ACCELERATION_QVASR [2022-04-27 21:05:27,732 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 27.04 09:05:27 BasicIcfg [2022-04-27 21:05:27,732 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-04-27 21:05:27,733 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-04-27 21:05:27,733 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-04-27 21:05:27,735 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-04-27 21:05:27,736 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.04 09:05:27" (1/4) ... [2022-04-27 21:05:27,736 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@db66b40 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.04 09:05:27, skipping insertion in model container [2022-04-27 21:05:27,736 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.04 09:05:27" (2/4) ... [2022-04-27 21:05:27,736 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@db66b40 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.04 09:05:27, skipping insertion in model container [2022-04-27 21:05:27,737 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.04 09:05:27" (3/4) ... [2022-04-27 21:05:27,737 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@db66b40 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.04 09:05:27, skipping insertion in model container [2022-04-27 21:05:27,737 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 27.04 09:05:27" (4/4) ... [2022-04-27 21:05:27,738 INFO L111 eAbstractionObserver]: Analyzing ICFG for_bounded_loop1.cqvasr [2022-04-27 21:05:27,748 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-04-27 21:05:27,748 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-04-27 21:05:27,777 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-27 21:05:27,782 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@3e63eb98, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@3771d3c9 [2022-04-27 21:05:27,782 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-04-27 21:05:27,788 INFO L276 IsEmpty]: Start isEmpty. Operand has 24 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 16 states have internal predecessors, (20), 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) [2022-04-27 21:05:27,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-04-27 21:05:27,793 INFO L187 NwaCegarLoop]: Found error trace [2022-04-27 21:05:27,793 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-27 21:05:27,793 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-27 21:05:27,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-27 21:05:27,797 INFO L85 PathProgramCache]: Analyzing trace with hash -932305726, now seen corresponding path program 1 times [2022-04-27 21:05:27,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-27 21:05:27,804 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144504362] [2022-04-27 21:05:27,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-27 21:05:27,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-27 21:05:27,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-27 21:05:27,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-27 21:05:27,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-27 21:05:27,996 INFO L290 TraceCheckUtils]: 0: Hoare triple {32#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} [65] 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) (= (select |v_#length_1| 2) 20) (< 0 |v_#StackHeapBarrier_1|) (= |v_#NULL.base_1| 0) (= 1 (select |v_#valid_1| 3)) (= (select |v_#length_1| 3) 12) (= (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] {27#true} is VALID [2022-04-27 21:05:27,996 INFO L290 TraceCheckUtils]: 1: Hoare triple {27#true} [68] ULTIMATE.initFINAL-->ULTIMATE.initEXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {27#true} is VALID [2022-04-27 21:05:27,997 INFO L284 TraceCheckUtils]: 2: Hoare quadruple {27#true} {27#true} [88] ULTIMATE.initEXIT-->L-1: AOR: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] LVA: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {27#true} is VALID [2022-04-27 21:05:28,000 INFO L272 TraceCheckUtils]: 0: Hoare triple {27#true} [63] ULTIMATE.startENTRY-->ULTIMATE.initENTRY: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {32#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} is VALID [2022-04-27 21:05:28,000 INFO L290 TraceCheckUtils]: 1: Hoare triple {32#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} [65] 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) (= (select |v_#length_1| 2) 20) (< 0 |v_#StackHeapBarrier_1|) (= |v_#NULL.base_1| 0) (= 1 (select |v_#valid_1| 3)) (= (select |v_#length_1| 3) 12) (= (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] {27#true} is VALID [2022-04-27 21:05:28,000 INFO L290 TraceCheckUtils]: 2: Hoare triple {27#true} [68] ULTIMATE.initFINAL-->ULTIMATE.initEXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {27#true} is VALID [2022-04-27 21:05:28,001 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {27#true} {27#true} [88] ULTIMATE.initEXIT-->L-1: AOR: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] LVA: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {27#true} is VALID [2022-04-27 21:05:28,001 INFO L272 TraceCheckUtils]: 4: Hoare triple {27#true} [64] L-1-->mainENTRY: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {27#true} is VALID [2022-04-27 21:05:28,003 INFO L290 TraceCheckUtils]: 5: Hoare triple {27#true} [67] mainENTRY-->L21: Formula: (and (= v_main_~i~0_1 0) (<= 0 (+ |v_main_#t~nondet4_2| 2147483648)) (<= |v_main_#t~nondet4_2| 2147483647) (= v_main_~y~0_1 0) (= v_main_~n~0_1 |v_main_#t~nondet4_2|) (= v_main_~x~0_2 0)) InVars {main_#t~nondet4=|v_main_#t~nondet4_2|} OutVars{main_~i~0=v_main_~i~0_1, main_~y~0=v_main_~y~0_1, main_~n~0=v_main_~n~0_1, main_~x~0=v_main_~x~0_2} AuxVars[] AssignedVars[main_#t~nondet4, main_~x~0, main_~i~0, main_~y~0, main_~n~0] {27#true} is VALID [2022-04-27 21:05:28,003 INFO L290 TraceCheckUtils]: 6: Hoare triple {27#true} [70] L21-->L22-2: Formula: (and (< 0 v_main_~n~0_3) (= v_main_~i~0_2 0)) InVars {main_~n~0=v_main_~n~0_3} OutVars{main_~i~0=v_main_~i~0_2, main_~n~0=v_main_~n~0_3} AuxVars[] AssignedVars[main_~i~0] {27#true} is VALID [2022-04-27 21:05:28,003 INFO L290 TraceCheckUtils]: 7: Hoare triple {27#true} [72] L22-2-->L22-3: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] {28#false} is VALID [2022-04-27 21:05:28,004 INFO L272 TraceCheckUtils]: 8: Hoare triple {28#false} [75] L22-3-->__VERIFIER_assertENTRY: Formula: (= (ite (= v_main_~x~0_11 0) 1 0) |v___VERIFIER_assert_#in~condInParam_3|) InVars {main_~x~0=v_main_~x~0_11} OutVars{__VERIFIER_assert_#in~cond=|v___VERIFIER_assert_#in~condInParam_3|} AuxVars[] AssignedVars[__VERIFIER_assert_#in~cond, main_~x~0] {28#false} is VALID [2022-04-27 21:05:28,004 INFO L290 TraceCheckUtils]: 9: Hoare triple {28#false} [77] __VERIFIER_assertENTRY-->L10: 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] {28#false} is VALID [2022-04-27 21:05:28,004 INFO L290 TraceCheckUtils]: 10: Hoare triple {28#false} [79] L10-->L11: 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[] {28#false} is VALID [2022-04-27 21:05:28,004 INFO L290 TraceCheckUtils]: 11: Hoare triple {28#false} [83] L11-->__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {28#false} is VALID [2022-04-27 21:05:28,005 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 21:05:28,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-27 21:05:28,006 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1144504362] [2022-04-27 21:05:28,006 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1144504362] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-27 21:05:28,007 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-27 21:05:28,007 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-04-27 21:05:28,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460951518] [2022-04-27 21:05:28,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-27 21:05:28,013 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2022-04-27 21:05:28,015 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-27 21:05:28,018 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-27 21:05:28,040 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 12 edges. 12 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-27 21:05:28,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-27 21:05:28,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-27 21:05:28,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-27 21:05:28,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-27 21:05:28,067 INFO L87 Difference]: Start difference. First operand has 24 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 16 states have internal predecessors, (20), 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 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-27 21:05:28,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-27 21:05:28,180 INFO L93 Difference]: Finished difference Result 41 states and 55 transitions. [2022-04-27 21:05:28,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-27 21:05:28,181 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2022-04-27 21:05:28,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-27 21:05:28,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-27 21:05:28,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 55 transitions. [2022-04-27 21:05:28,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-27 21:05:28,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 55 transitions. [2022-04-27 21:05:28,192 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 3 states and 55 transitions. [2022-04-27 21:05:28,256 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 55 edges. 55 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-27 21:05:28,263 INFO L225 Difference]: With dead ends: 41 [2022-04-27 21:05:28,263 INFO L226 Difference]: Without dead ends: 20 [2022-04-27 21:05:28,266 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 21:05:28,268 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 15 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-27 21:05:28,269 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 28 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-27 21:05:28,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2022-04-27 21:05:28,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2022-04-27 21:05:28,293 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-27 21:05:28,294 INFO L82 GeneralOperation]: Start isEquivalent. First operand 20 states. Second operand has 20 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 13 states have internal predecessors, (14), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-04-27 21:05:28,294 INFO L74 IsIncluded]: Start isIncluded. First operand 20 states. Second operand has 20 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 13 states have internal predecessors, (14), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-04-27 21:05:28,294 INFO L87 Difference]: Start difference. First operand 20 states. Second operand has 20 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 13 states have internal predecessors, (14), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-04-27 21:05:28,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-27 21:05:28,297 INFO L93 Difference]: Finished difference Result 20 states and 22 transitions. [2022-04-27 21:05:28,298 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 22 transitions. [2022-04-27 21:05:28,298 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-27 21:05:28,298 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-27 21:05:28,298 INFO L74 IsIncluded]: Start isIncluded. First operand has 20 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 13 states have internal predecessors, (14), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand 20 states. [2022-04-27 21:05:28,299 INFO L87 Difference]: Start difference. First operand has 20 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 13 states have internal predecessors, (14), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand 20 states. [2022-04-27 21:05:28,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-27 21:05:28,301 INFO L93 Difference]: Finished difference Result 20 states and 22 transitions. [2022-04-27 21:05:28,301 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 22 transitions. [2022-04-27 21:05:28,301 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-27 21:05:28,302 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-27 21:05:28,302 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-27 21:05:28,302 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-27 21:05:28,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 13 states have internal predecessors, (14), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-04-27 21:05:28,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 22 transitions. [2022-04-27 21:05:28,305 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 22 transitions. Word has length 12 [2022-04-27 21:05:28,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-27 21:05:28,305 INFO L495 AbstractCegarLoop]: Abstraction has 20 states and 22 transitions. [2022-04-27 21:05:28,305 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-27 21:05:28,305 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 22 transitions. [2022-04-27 21:05:28,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-04-27 21:05:28,306 INFO L187 NwaCegarLoop]: Found error trace [2022-04-27 21:05:28,306 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-27 21:05:28,306 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-04-27 21:05:28,306 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-27 21:05:28,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-27 21:05:28,307 INFO L85 PathProgramCache]: Analyzing trace with hash -931382205, now seen corresponding path program 1 times [2022-04-27 21:05:28,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-27 21:05:28,308 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157263610] [2022-04-27 21:05:28,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-27 21:05:28,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-27 21:05:28,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-27 21:05:28,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-27 21:05:28,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-27 21:05:28,364 INFO L290 TraceCheckUtils]: 0: Hoare triple {165#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} [65] 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) (= (select |v_#length_1| 2) 20) (< 0 |v_#StackHeapBarrier_1|) (= |v_#NULL.base_1| 0) (= 1 (select |v_#valid_1| 3)) (= (select |v_#length_1| 3) 12) (= (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] {159#true} is VALID [2022-04-27 21:05:28,364 INFO L290 TraceCheckUtils]: 1: Hoare triple {159#true} [68] ULTIMATE.initFINAL-->ULTIMATE.initEXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {159#true} is VALID [2022-04-27 21:05:28,364 INFO L284 TraceCheckUtils]: 2: Hoare quadruple {159#true} {159#true} [88] ULTIMATE.initEXIT-->L-1: AOR: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] LVA: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {159#true} is VALID [2022-04-27 21:05:28,367 INFO L272 TraceCheckUtils]: 0: Hoare triple {159#true} [63] ULTIMATE.startENTRY-->ULTIMATE.initENTRY: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {165#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} is VALID [2022-04-27 21:05:28,368 INFO L290 TraceCheckUtils]: 1: Hoare triple {165#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} [65] 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) (= (select |v_#length_1| 2) 20) (< 0 |v_#StackHeapBarrier_1|) (= |v_#NULL.base_1| 0) (= 1 (select |v_#valid_1| 3)) (= (select |v_#length_1| 3) 12) (= (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] {159#true} is VALID [2022-04-27 21:05:28,368 INFO L290 TraceCheckUtils]: 2: Hoare triple {159#true} [68] ULTIMATE.initFINAL-->ULTIMATE.initEXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {159#true} is VALID [2022-04-27 21:05:28,368 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {159#true} {159#true} [88] ULTIMATE.initEXIT-->L-1: AOR: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] LVA: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {159#true} is VALID [2022-04-27 21:05:28,369 INFO L272 TraceCheckUtils]: 4: Hoare triple {159#true} [64] L-1-->mainENTRY: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {159#true} is VALID [2022-04-27 21:05:28,369 INFO L290 TraceCheckUtils]: 5: Hoare triple {159#true} [67] mainENTRY-->L21: Formula: (and (= v_main_~i~0_1 0) (<= 0 (+ |v_main_#t~nondet4_2| 2147483648)) (<= |v_main_#t~nondet4_2| 2147483647) (= v_main_~y~0_1 0) (= v_main_~n~0_1 |v_main_#t~nondet4_2|) (= v_main_~x~0_2 0)) InVars {main_#t~nondet4=|v_main_#t~nondet4_2|} OutVars{main_~i~0=v_main_~i~0_1, main_~y~0=v_main_~y~0_1, main_~n~0=v_main_~n~0_1, main_~x~0=v_main_~x~0_2} AuxVars[] AssignedVars[main_#t~nondet4, main_~x~0, main_~i~0, main_~y~0, main_~n~0] {159#true} is VALID [2022-04-27 21:05:28,372 INFO L290 TraceCheckUtils]: 6: Hoare triple {159#true} [70] L21-->L22-2: Formula: (and (< 0 v_main_~n~0_3) (= v_main_~i~0_2 0)) InVars {main_~n~0=v_main_~n~0_3} OutVars{main_~i~0=v_main_~i~0_2, main_~n~0=v_main_~n~0_3} AuxVars[] AssignedVars[main_~i~0] {164#(and (<= 1 main_~n~0) (= main_~i~0 0))} is VALID [2022-04-27 21:05:28,373 INFO L290 TraceCheckUtils]: 7: Hoare triple {164#(and (<= 1 main_~n~0) (= main_~i~0 0))} [73] L22-2-->L22-3: Formula: (not (< v_main_~i~0_3 v_main_~n~0_4)) InVars {main_~i~0=v_main_~i~0_3, main_~n~0=v_main_~n~0_4} OutVars{main_~i~0=v_main_~i~0_3, main_~n~0=v_main_~n~0_4} AuxVars[] AssignedVars[] {160#false} is VALID [2022-04-27 21:05:28,374 INFO L272 TraceCheckUtils]: 8: Hoare triple {160#false} [75] L22-3-->__VERIFIER_assertENTRY: Formula: (= (ite (= v_main_~x~0_11 0) 1 0) |v___VERIFIER_assert_#in~condInParam_3|) InVars {main_~x~0=v_main_~x~0_11} OutVars{__VERIFIER_assert_#in~cond=|v___VERIFIER_assert_#in~condInParam_3|} AuxVars[] AssignedVars[__VERIFIER_assert_#in~cond, main_~x~0] {160#false} is VALID [2022-04-27 21:05:28,374 INFO L290 TraceCheckUtils]: 9: Hoare triple {160#false} [77] __VERIFIER_assertENTRY-->L10: 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] {160#false} is VALID [2022-04-27 21:05:28,374 INFO L290 TraceCheckUtils]: 10: Hoare triple {160#false} [79] L10-->L11: 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[] {160#false} is VALID [2022-04-27 21:05:28,374 INFO L290 TraceCheckUtils]: 11: Hoare triple {160#false} [83] L11-->__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {160#false} is VALID [2022-04-27 21:05:28,375 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 21:05:28,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-27 21:05:28,375 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157263610] [2022-04-27 21:05:28,375 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1157263610] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-27 21:05:28,375 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-27 21:05:28,375 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-04-27 21:05:28,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73039498] [2022-04-27 21:05:28,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-27 21:05:28,377 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2022-04-27 21:05:28,377 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-27 21:05:28,377 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-27 21:05:28,398 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 12 edges. 12 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-27 21:05:28,399 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-04-27 21:05:28,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-27 21:05:28,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-04-27 21:05:28,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-04-27 21:05:28,400 INFO L87 Difference]: Start difference. First operand 20 states and 22 transitions. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-27 21:05:28,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-27 21:05:28,538 INFO L93 Difference]: Finished difference Result 33 states and 37 transitions. [2022-04-27 21:05:28,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-04-27 21:05:28,539 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2022-04-27 21:05:28,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-27 21:05:28,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-27 21:05:28,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 37 transitions. [2022-04-27 21:05:28,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-27 21:05:28,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 37 transitions. [2022-04-27 21:05:28,556 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 4 states and 37 transitions. [2022-04-27 21:05:28,595 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 37 edges. 37 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-27 21:05:28,598 INFO L225 Difference]: With dead ends: 33 [2022-04-27 21:05:28,598 INFO L226 Difference]: Without dead ends: 26 [2022-04-27 21:05:28,600 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-04-27 21:05:28,603 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 18 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-27 21:05:28,605 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 25 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-27 21:05:28,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2022-04-27 21:05:28,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 21. [2022-04-27 21:05:28,637 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-27 21:05:28,638 INFO L82 GeneralOperation]: Start isEquivalent. First operand 26 states. Second operand has 21 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 14 states have internal predecessors, (15), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-04-27 21:05:28,640 INFO L74 IsIncluded]: Start isIncluded. First operand 26 states. Second operand has 21 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 14 states have internal predecessors, (15), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-04-27 21:05:28,640 INFO L87 Difference]: Start difference. First operand 26 states. Second operand has 21 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 14 states have internal predecessors, (15), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-04-27 21:05:28,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-27 21:05:28,645 INFO L93 Difference]: Finished difference Result 26 states and 30 transitions. [2022-04-27 21:05:28,645 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 30 transitions. [2022-04-27 21:05:28,647 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-27 21:05:28,647 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-27 21:05:28,647 INFO L74 IsIncluded]: Start isIncluded. First operand has 21 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 14 states have internal predecessors, (15), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand 26 states. [2022-04-27 21:05:28,648 INFO L87 Difference]: Start difference. First operand has 21 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 14 states have internal predecessors, (15), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand 26 states. [2022-04-27 21:05:28,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-27 21:05:28,649 INFO L93 Difference]: Finished difference Result 26 states and 30 transitions. [2022-04-27 21:05:28,649 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 30 transitions. [2022-04-27 21:05:28,650 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-27 21:05:28,650 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-27 21:05:28,650 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-27 21:05:28,650 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-27 21:05:28,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 14 states have internal predecessors, (15), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-04-27 21:05:28,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 23 transitions. [2022-04-27 21:05:28,651 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 23 transitions. Word has length 12 [2022-04-27 21:05:28,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-27 21:05:28,652 INFO L495 AbstractCegarLoop]: Abstraction has 21 states and 23 transitions. [2022-04-27 21:05:28,652 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-27 21:05:28,652 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 23 transitions. [2022-04-27 21:05:28,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-04-27 21:05:28,652 INFO L187 NwaCegarLoop]: Found error trace [2022-04-27 21:05:28,652 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-27 21:05:28,652 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-04-27 21:05:28,653 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-27 21:05:28,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-27 21:05:28,653 INFO L85 PathProgramCache]: Analyzing trace with hash -930428893, now seen corresponding path program 1 times [2022-04-27 21:05:28,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-27 21:05:28,653 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [986824220] [2022-04-27 21:05:28,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-27 21:05:28,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-27 21:05:28,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-27 21:05:28,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-27 21:05:28,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-27 21:05:28,745 INFO L290 TraceCheckUtils]: 0: Hoare triple {309#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} [65] 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) (= (select |v_#length_1| 2) 20) (< 0 |v_#StackHeapBarrier_1|) (= |v_#NULL.base_1| 0) (= 1 (select |v_#valid_1| 3)) (= (select |v_#length_1| 3) 12) (= (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] {300#true} is VALID [2022-04-27 21:05:28,745 INFO L290 TraceCheckUtils]: 1: Hoare triple {300#true} [68] ULTIMATE.initFINAL-->ULTIMATE.initEXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {300#true} is VALID [2022-04-27 21:05:28,745 INFO L284 TraceCheckUtils]: 2: Hoare quadruple {300#true} {300#true} [88] ULTIMATE.initEXIT-->L-1: AOR: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] LVA: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {300#true} is VALID [2022-04-27 21:05:28,746 INFO L272 TraceCheckUtils]: 0: Hoare triple {300#true} [63] ULTIMATE.startENTRY-->ULTIMATE.initENTRY: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {309#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} is VALID [2022-04-27 21:05:28,746 INFO L290 TraceCheckUtils]: 1: Hoare triple {309#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} [65] 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) (= (select |v_#length_1| 2) 20) (< 0 |v_#StackHeapBarrier_1|) (= |v_#NULL.base_1| 0) (= 1 (select |v_#valid_1| 3)) (= (select |v_#length_1| 3) 12) (= (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] {300#true} is VALID [2022-04-27 21:05:28,746 INFO L290 TraceCheckUtils]: 2: Hoare triple {300#true} [68] ULTIMATE.initFINAL-->ULTIMATE.initEXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {300#true} is VALID [2022-04-27 21:05:28,746 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {300#true} {300#true} [88] ULTIMATE.initEXIT-->L-1: AOR: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] LVA: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {300#true} is VALID [2022-04-27 21:05:28,746 INFO L272 TraceCheckUtils]: 4: Hoare triple {300#true} [64] L-1-->mainENTRY: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {300#true} is VALID [2022-04-27 21:05:28,747 INFO L290 TraceCheckUtils]: 5: Hoare triple {300#true} [67] mainENTRY-->L21: Formula: (and (= v_main_~i~0_1 0) (<= 0 (+ |v_main_#t~nondet4_2| 2147483648)) (<= |v_main_#t~nondet4_2| 2147483647) (= v_main_~y~0_1 0) (= v_main_~n~0_1 |v_main_#t~nondet4_2|) (= v_main_~x~0_2 0)) InVars {main_#t~nondet4=|v_main_#t~nondet4_2|} OutVars{main_~i~0=v_main_~i~0_1, main_~y~0=v_main_~y~0_1, main_~n~0=v_main_~n~0_1, main_~x~0=v_main_~x~0_2} AuxVars[] AssignedVars[main_#t~nondet4, main_~x~0, main_~i~0, main_~y~0, main_~n~0] {305#(and (= main_~x~0 0) (= main_~y~0 0))} is VALID [2022-04-27 21:05:28,748 INFO L290 TraceCheckUtils]: 6: Hoare triple {305#(and (= main_~x~0 0) (= main_~y~0 0))} [70] L21-->L22-2: Formula: (and (< 0 v_main_~n~0_3) (= v_main_~i~0_2 0)) InVars {main_~n~0=v_main_~n~0_3} OutVars{main_~i~0=v_main_~i~0_2, main_~n~0=v_main_~n~0_3} AuxVars[] AssignedVars[main_~i~0] {305#(and (= main_~x~0 0) (= main_~y~0 0))} is VALID [2022-04-27 21:05:28,748 INFO L290 TraceCheckUtils]: 7: Hoare triple {305#(and (= main_~x~0 0) (= main_~y~0 0))} [74] L22-2-->L25: Formula: (and (< v_main_~i~0_4 v_main_~n~0_5) (= (+ v_main_~x~0_4 (* (- 1) v_main_~y~0_2)) v_main_~x~0_3)) InVars {main_~i~0=v_main_~i~0_4, main_~y~0=v_main_~y~0_2, main_~n~0=v_main_~n~0_5, main_~x~0=v_main_~x~0_4} OutVars{main_~i~0=v_main_~i~0_4, main_~y~0=v_main_~y~0_2, main_~n~0=v_main_~n~0_5, main_~x~0=v_main_~x~0_3} AuxVars[] AssignedVars[main_~x~0] {306#(and (<= main_~x~0 0) (< 0 (+ main_~x~0 1)))} is VALID [2022-04-27 21:05:28,749 INFO L272 TraceCheckUtils]: 8: Hoare triple {306#(and (<= main_~x~0 0) (< 0 (+ main_~x~0 1)))} [76] L25-->__VERIFIER_assertENTRY: Formula: (= |v___VERIFIER_assert_#in~condInParam_1| (ite (= v_main_~x~0_9 0) 1 0)) InVars {main_~x~0=v_main_~x~0_9} OutVars{__VERIFIER_assert_#in~cond=|v___VERIFIER_assert_#in~condInParam_1|} AuxVars[] AssignedVars[__VERIFIER_assert_#in~cond, main_~x~0] {307#(not (= |__VERIFIER_assert_#in~cond| 0))} is VALID [2022-04-27 21:05:28,749 INFO L290 TraceCheckUtils]: 9: Hoare triple {307#(not (= |__VERIFIER_assert_#in~cond| 0))} [77] __VERIFIER_assertENTRY-->L10: 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] {308#(not (= __VERIFIER_assert_~cond 0))} is VALID [2022-04-27 21:05:28,749 INFO L290 TraceCheckUtils]: 10: Hoare triple {308#(not (= __VERIFIER_assert_~cond 0))} [79] L10-->L11: 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[] {301#false} is VALID [2022-04-27 21:05:28,750 INFO L290 TraceCheckUtils]: 11: Hoare triple {301#false} [83] L11-->__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {301#false} is VALID [2022-04-27 21:05:28,750 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 21:05:28,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-27 21:05:28,750 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [986824220] [2022-04-27 21:05:28,750 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [986824220] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-27 21:05:28,750 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-27 21:05:28,750 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-04-27 21:05:28,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066844926] [2022-04-27 21:05:28,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-27 21:05:28,751 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 5 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2022-04-27 21:05:28,751 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-27 21:05:28,751 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 5 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-27 21:05:28,759 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 12 edges. 12 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-27 21:05:28,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-04-27 21:05:28,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-27 21:05:28,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-04-27 21:05:28,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-04-27 21:05:28,760 INFO L87 Difference]: Start difference. First operand 21 states and 23 transitions. Second operand has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 5 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-27 21:05:28,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-27 21:05:28,969 INFO L93 Difference]: Finished difference Result 30 states and 32 transitions. [2022-04-27 21:05:28,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-04-27 21:05:28,970 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 5 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2022-04-27 21:05:28,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-27 21:05:28,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 5 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-27 21:05:28,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 32 transitions. [2022-04-27 21:05:28,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 5 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-27 21:05:28,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 32 transitions. [2022-04-27 21:05:28,973 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 8 states and 32 transitions. [2022-04-27 21:05:28,998 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 32 edges. 32 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-27 21:05:28,999 INFO L225 Difference]: With dead ends: 30 [2022-04-27 21:05:28,999 INFO L226 Difference]: Without dead ends: 28 [2022-04-27 21:05:28,999 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2022-04-27 21:05:29,000 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 24 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-27 21:05:29,001 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 38 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-27 21:05:29,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2022-04-27 21:05:29,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 26. [2022-04-27 21:05:29,008 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-27 21:05:29,008 INFO L82 GeneralOperation]: Start isEquivalent. First operand 28 states. Second operand has 26 states, 16 states have (on average 1.125) internal successors, (18), 18 states have internal predecessors, (18), 6 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2022-04-27 21:05:29,008 INFO L74 IsIncluded]: Start isIncluded. First operand 28 states. Second operand has 26 states, 16 states have (on average 1.125) internal successors, (18), 18 states have internal predecessors, (18), 6 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2022-04-27 21:05:29,008 INFO L87 Difference]: Start difference. First operand 28 states. Second operand has 26 states, 16 states have (on average 1.125) internal successors, (18), 18 states have internal predecessors, (18), 6 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2022-04-27 21:05:29,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-27 21:05:29,010 INFO L93 Difference]: Finished difference Result 28 states and 30 transitions. [2022-04-27 21:05:29,010 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 30 transitions. [2022-04-27 21:05:29,010 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-27 21:05:29,010 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-27 21:05:29,010 INFO L74 IsIncluded]: Start isIncluded. First operand has 26 states, 16 states have (on average 1.125) internal successors, (18), 18 states have internal predecessors, (18), 6 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) Second operand 28 states. [2022-04-27 21:05:29,010 INFO L87 Difference]: Start difference. First operand has 26 states, 16 states have (on average 1.125) internal successors, (18), 18 states have internal predecessors, (18), 6 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) Second operand 28 states. [2022-04-27 21:05:29,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-27 21:05:29,012 INFO L93 Difference]: Finished difference Result 28 states and 30 transitions. [2022-04-27 21:05:29,012 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 30 transitions. [2022-04-27 21:05:29,012 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-27 21:05:29,012 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-27 21:05:29,012 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-27 21:05:29,012 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-27 21:05:29,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 16 states have (on average 1.125) internal successors, (18), 18 states have internal predecessors, (18), 6 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2022-04-27 21:05:29,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 28 transitions. [2022-04-27 21:05:29,014 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 28 transitions. Word has length 12 [2022-04-27 21:05:29,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-27 21:05:29,014 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 28 transitions. [2022-04-27 21:05:29,014 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 5 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-27 21:05:29,014 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 28 transitions. [2022-04-27 21:05:29,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-04-27 21:05:29,015 INFO L187 NwaCegarLoop]: Found error trace [2022-04-27 21:05:29,015 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-27 21:05:29,015 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-04-27 21:05:29,015 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-27 21:05:29,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-27 21:05:29,016 INFO L85 PathProgramCache]: Analyzing trace with hash 231391925, now seen corresponding path program 1 times [2022-04-27 21:05:29,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-27 21:05:29,016 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [370068401] [2022-04-27 21:05:29,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-27 21:05:29,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-27 21:05:29,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-27 21:05:29,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-27 21:05:29,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-27 21:05:29,123 INFO L290 TraceCheckUtils]: 0: Hoare triple {472#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} [65] 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) (= (select |v_#length_1| 2) 20) (< 0 |v_#StackHeapBarrier_1|) (= |v_#NULL.base_1| 0) (= 1 (select |v_#valid_1| 3)) (= (select |v_#length_1| 3) 12) (= (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] {458#true} is VALID [2022-04-27 21:05:29,123 INFO L290 TraceCheckUtils]: 1: Hoare triple {458#true} [68] ULTIMATE.initFINAL-->ULTIMATE.initEXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {458#true} is VALID [2022-04-27 21:05:29,123 INFO L284 TraceCheckUtils]: 2: Hoare quadruple {458#true} {458#true} [88] ULTIMATE.initEXIT-->L-1: AOR: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] LVA: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {458#true} is VALID [2022-04-27 21:05:29,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-04-27 21:05:29,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-27 21:05:29,128 INFO L290 TraceCheckUtils]: 0: Hoare triple {458#true} [77] __VERIFIER_assertENTRY-->L10: 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] {458#true} is VALID [2022-04-27 21:05:29,128 INFO L290 TraceCheckUtils]: 1: Hoare triple {458#true} [80] L10-->L10-2: Formula: (not (= v___VERIFIER_assert_~cond_1 0)) InVars {__VERIFIER_assert_~cond=v___VERIFIER_assert_~cond_1} OutVars{__VERIFIER_assert_~cond=v___VERIFIER_assert_~cond_1} AuxVars[] AssignedVars[] {458#true} is VALID [2022-04-27 21:05:29,129 INFO L290 TraceCheckUtils]: 2: Hoare triple {458#true} [85] L10-2-->__VERIFIER_assertEXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {458#true} is VALID [2022-04-27 21:05:29,129 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {458#true} {464#(= main_~x~0 0)} [90] __VERIFIER_assertEXIT-->L25-1: AOR: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] LVA: Formula: (= |v___VERIFIER_assert_#in~condInParam_1| (ite (= v_main_~x~0_9 0) 1 0)) InVars {main_~x~0=v_main_~x~0_9} OutVars{__VERIFIER_assert_#in~cond=|v___VERIFIER_assert_#in~condInParam_1|} AuxVars[] AssignedVars[__VERIFIER_assert_#in~cond, main_~x~0] {464#(= main_~x~0 0)} is VALID [2022-04-27 21:05:29,130 INFO L272 TraceCheckUtils]: 0: Hoare triple {458#true} [63] ULTIMATE.startENTRY-->ULTIMATE.initENTRY: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {472#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} is VALID [2022-04-27 21:05:29,130 INFO L290 TraceCheckUtils]: 1: Hoare triple {472#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} [65] 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) (= (select |v_#length_1| 2) 20) (< 0 |v_#StackHeapBarrier_1|) (= |v_#NULL.base_1| 0) (= 1 (select |v_#valid_1| 3)) (= (select |v_#length_1| 3) 12) (= (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] {458#true} is VALID [2022-04-27 21:05:29,130 INFO L290 TraceCheckUtils]: 2: Hoare triple {458#true} [68] ULTIMATE.initFINAL-->ULTIMATE.initEXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {458#true} is VALID [2022-04-27 21:05:29,130 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {458#true} {458#true} [88] ULTIMATE.initEXIT-->L-1: AOR: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] LVA: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {458#true} is VALID [2022-04-27 21:05:29,130 INFO L272 TraceCheckUtils]: 4: Hoare triple {458#true} [64] L-1-->mainENTRY: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {458#true} is VALID [2022-04-27 21:05:29,131 INFO L290 TraceCheckUtils]: 5: Hoare triple {458#true} [67] mainENTRY-->L21: Formula: (and (= v_main_~i~0_1 0) (<= 0 (+ |v_main_#t~nondet4_2| 2147483648)) (<= |v_main_#t~nondet4_2| 2147483647) (= v_main_~y~0_1 0) (= v_main_~n~0_1 |v_main_#t~nondet4_2|) (= v_main_~x~0_2 0)) InVars {main_#t~nondet4=|v_main_#t~nondet4_2|} OutVars{main_~i~0=v_main_~i~0_1, main_~y~0=v_main_~y~0_1, main_~n~0=v_main_~n~0_1, main_~x~0=v_main_~x~0_2} AuxVars[] AssignedVars[main_#t~nondet4, main_~x~0, main_~i~0, main_~y~0, main_~n~0] {463#(and (= main_~x~0 0) (= main_~y~0 0))} is VALID [2022-04-27 21:05:29,132 INFO L290 TraceCheckUtils]: 6: Hoare triple {463#(and (= main_~x~0 0) (= main_~y~0 0))} [70] L21-->L22-2: Formula: (and (< 0 v_main_~n~0_3) (= v_main_~i~0_2 0)) InVars {main_~n~0=v_main_~n~0_3} OutVars{main_~i~0=v_main_~i~0_2, main_~n~0=v_main_~n~0_3} AuxVars[] AssignedVars[main_~i~0] {463#(and (= main_~x~0 0) (= main_~y~0 0))} is VALID [2022-04-27 21:05:29,132 INFO L290 TraceCheckUtils]: 7: Hoare triple {463#(and (= main_~x~0 0) (= main_~y~0 0))} [74] L22-2-->L25: Formula: (and (< v_main_~i~0_4 v_main_~n~0_5) (= (+ v_main_~x~0_4 (* (- 1) v_main_~y~0_2)) v_main_~x~0_3)) InVars {main_~i~0=v_main_~i~0_4, main_~y~0=v_main_~y~0_2, main_~n~0=v_main_~n~0_5, main_~x~0=v_main_~x~0_4} OutVars{main_~i~0=v_main_~i~0_4, main_~y~0=v_main_~y~0_2, main_~n~0=v_main_~n~0_5, main_~x~0=v_main_~x~0_3} AuxVars[] AssignedVars[main_~x~0] {464#(= main_~x~0 0)} is VALID [2022-04-27 21:05:29,132 INFO L272 TraceCheckUtils]: 8: Hoare triple {464#(= main_~x~0 0)} [76] L25-->__VERIFIER_assertENTRY: Formula: (= |v___VERIFIER_assert_#in~condInParam_1| (ite (= v_main_~x~0_9 0) 1 0)) InVars {main_~x~0=v_main_~x~0_9} OutVars{__VERIFIER_assert_#in~cond=|v___VERIFIER_assert_#in~condInParam_1|} AuxVars[] AssignedVars[__VERIFIER_assert_#in~cond, main_~x~0] {458#true} is VALID [2022-04-27 21:05:29,132 INFO L290 TraceCheckUtils]: 9: Hoare triple {458#true} [77] __VERIFIER_assertENTRY-->L10: 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] {458#true} is VALID [2022-04-27 21:05:29,133 INFO L290 TraceCheckUtils]: 10: Hoare triple {458#true} [80] L10-->L10-2: Formula: (not (= v___VERIFIER_assert_~cond_1 0)) InVars {__VERIFIER_assert_~cond=v___VERIFIER_assert_~cond_1} OutVars{__VERIFIER_assert_~cond=v___VERIFIER_assert_~cond_1} AuxVars[] AssignedVars[] {458#true} is VALID [2022-04-27 21:05:29,133 INFO L290 TraceCheckUtils]: 11: Hoare triple {458#true} [85] L10-2-->__VERIFIER_assertEXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {458#true} is VALID [2022-04-27 21:05:29,133 INFO L284 TraceCheckUtils]: 12: Hoare quadruple {458#true} {464#(= main_~x~0 0)} [90] __VERIFIER_assertEXIT-->L25-1: AOR: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] LVA: Formula: (= |v___VERIFIER_assert_#in~condInParam_1| (ite (= v_main_~x~0_9 0) 1 0)) InVars {main_~x~0=v_main_~x~0_9} OutVars{__VERIFIER_assert_#in~cond=|v___VERIFIER_assert_#in~condInParam_1|} AuxVars[] AssignedVars[__VERIFIER_assert_#in~cond, main_~x~0] {464#(= main_~x~0 0)} is VALID [2022-04-27 21:05:29,134 INFO L290 TraceCheckUtils]: 13: Hoare triple {464#(= main_~x~0 0)} [78] L25-1-->L27: Formula: (and (= v_main_~y~0_3 |v_main_#t~nondet6_2|) (<= |v_main_#t~nondet6_2| 2147483647) (<= 0 (+ |v_main_#t~nondet6_2| 2147483648))) InVars {main_#t~nondet6=|v_main_#t~nondet6_2|} OutVars{main_~y~0=v_main_~y~0_3} AuxVars[] AssignedVars[main_#t~nondet6, main_~y~0] {464#(= main_~x~0 0)} is VALID [2022-04-27 21:05:29,134 INFO L290 TraceCheckUtils]: 14: Hoare triple {464#(= main_~x~0 0)} [82] L27-->L29: Formula: (and (not (= v_main_~y~0_5 0)) (= v_main_~x~0_6 (+ v_main_~x~0_7 v_main_~y~0_5))) InVars {main_~x~0=v_main_~x~0_7, main_~y~0=v_main_~y~0_5} OutVars{main_~x~0=v_main_~x~0_6, main_~y~0=v_main_~y~0_5} AuxVars[] AssignedVars[main_~x~0] {469#(or (<= 1 main_~x~0) (<= (+ main_~x~0 1) 0))} is VALID [2022-04-27 21:05:29,135 INFO L272 TraceCheckUtils]: 15: Hoare triple {469#(or (<= 1 main_~x~0) (<= (+ main_~x~0 1) 0))} [86] L29-->__VERIFIER_assertENTRY: Formula: (= |v___VERIFIER_assert_#in~condInParam_2| (ite (not (= v_main_~x~0_10 0)) 1 0)) InVars {main_~x~0=v_main_~x~0_10} OutVars{__VERIFIER_assert_#in~cond=|v___VERIFIER_assert_#in~condInParam_2|} AuxVars[] AssignedVars[__VERIFIER_assert_#in~cond, main_~x~0] {470#(not (= |__VERIFIER_assert_#in~cond| 0))} is VALID [2022-04-27 21:05:29,135 INFO L290 TraceCheckUtils]: 16: Hoare triple {470#(not (= |__VERIFIER_assert_#in~cond| 0))} [77] __VERIFIER_assertENTRY-->L10: 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] {471#(not (= __VERIFIER_assert_~cond 0))} is VALID [2022-04-27 21:05:29,135 INFO L290 TraceCheckUtils]: 17: Hoare triple {471#(not (= __VERIFIER_assert_~cond 0))} [79] L10-->L11: 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[] {459#false} is VALID [2022-04-27 21:05:29,136 INFO L290 TraceCheckUtils]: 18: Hoare triple {459#false} [83] L11-->__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {459#false} is VALID [2022-04-27 21:05:29,136 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-27 21:05:29,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-27 21:05:29,136 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [370068401] [2022-04-27 21:05:29,136 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [370068401] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-27 21:05:29,136 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-27 21:05:29,137 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-04-27 21:05:29,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558650771] [2022-04-27 21:05:29,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-27 21:05:29,137 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 6 states have internal predecessors, (13), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 19 [2022-04-27 21:05:29,137 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-27 21:05:29,137 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 8 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 6 states have internal predecessors, (13), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-04-27 21:05:29,148 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 19 edges. 19 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-27 21:05:29,149 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-04-27 21:05:29,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-27 21:05:29,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-04-27 21:05:29,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-04-27 21:05:29,149 INFO L87 Difference]: Start difference. First operand 26 states and 28 transitions. Second operand has 8 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 6 states have internal predecessors, (13), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-04-27 21:05:29,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-27 21:05:29,418 INFO L93 Difference]: Finished difference Result 38 states and 41 transitions. [2022-04-27 21:05:29,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-04-27 21:05:29,418 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 6 states have internal predecessors, (13), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 19 [2022-04-27 21:05:29,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-27 21:05:29,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 6 states have internal predecessors, (13), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-04-27 21:05:29,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 38 transitions. [2022-04-27 21:05:29,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 6 states have internal predecessors, (13), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-04-27 21:05:29,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 38 transitions. [2022-04-27 21:05:29,421 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 9 states and 38 transitions. [2022-04-27 21:05:29,452 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 38 edges. 38 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-27 21:05:29,453 INFO L225 Difference]: With dead ends: 38 [2022-04-27 21:05:29,453 INFO L226 Difference]: Without dead ends: 36 [2022-04-27 21:05:29,453 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2022-04-27 21:05:29,454 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 27 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-27 21:05:29,455 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 43 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-27 21:05:29,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2022-04-27 21:05:29,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 33. [2022-04-27 21:05:29,466 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-27 21:05:29,466 INFO L82 GeneralOperation]: Start isEquivalent. First operand 36 states. Second operand has 33 states, 21 states have (on average 1.0952380952380953) internal successors, (23), 23 states have internal predecessors, (23), 7 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2022-04-27 21:05:29,466 INFO L74 IsIncluded]: Start isIncluded. First operand 36 states. Second operand has 33 states, 21 states have (on average 1.0952380952380953) internal successors, (23), 23 states have internal predecessors, (23), 7 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2022-04-27 21:05:29,467 INFO L87 Difference]: Start difference. First operand 36 states. Second operand has 33 states, 21 states have (on average 1.0952380952380953) internal successors, (23), 23 states have internal predecessors, (23), 7 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2022-04-27 21:05:29,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-27 21:05:29,468 INFO L93 Difference]: Finished difference Result 36 states and 39 transitions. [2022-04-27 21:05:29,468 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 39 transitions. [2022-04-27 21:05:29,469 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-27 21:05:29,469 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-27 21:05:29,469 INFO L74 IsIncluded]: Start isIncluded. First operand has 33 states, 21 states have (on average 1.0952380952380953) internal successors, (23), 23 states have internal predecessors, (23), 7 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) Second operand 36 states. [2022-04-27 21:05:29,469 INFO L87 Difference]: Start difference. First operand has 33 states, 21 states have (on average 1.0952380952380953) internal successors, (23), 23 states have internal predecessors, (23), 7 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) Second operand 36 states. [2022-04-27 21:05:29,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-27 21:05:29,471 INFO L93 Difference]: Finished difference Result 36 states and 39 transitions. [2022-04-27 21:05:29,471 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 39 transitions. [2022-04-27 21:05:29,471 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-27 21:05:29,471 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-27 21:05:29,471 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-27 21:05:29,471 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-27 21:05:29,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 21 states have (on average 1.0952380952380953) internal successors, (23), 23 states have internal predecessors, (23), 7 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2022-04-27 21:05:29,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 35 transitions. [2022-04-27 21:05:29,473 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 35 transitions. Word has length 19 [2022-04-27 21:05:29,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-27 21:05:29,473 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 35 transitions. [2022-04-27 21:05:29,473 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 6 states have internal predecessors, (13), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-04-27 21:05:29,473 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 35 transitions. [2022-04-27 21:05:29,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-04-27 21:05:29,474 INFO L187 NwaCegarLoop]: Found error trace [2022-04-27 21:05:29,474 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-27 21:05:29,474 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-04-27 21:05:29,474 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-27 21:05:29,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-27 21:05:29,475 INFO L85 PathProgramCache]: Analyzing trace with hash -1683544803, now seen corresponding path program 1 times [2022-04-27 21:05:29,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-27 21:05:29,475 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [521285548] [2022-04-27 21:05:29,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-27 21:05:29,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-27 21:05:29,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-27 21:05:29,492 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-04-27 21:05:29,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-27 21:05:29,532 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-04-27 21:05:29,532 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-04-27 21:05:29,533 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-04-27 21:05:29,534 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-04-27 21:05:29,537 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2022-04-27 21:05:29,539 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-04-27 21:05:29,555 WARN L170 areAnnotationChecker]: ULTIMATE.startENTRY has no Hoare annotation [2022-04-27 21:05:29,555 WARN L170 areAnnotationChecker]: ULTIMATE.initENTRY has no Hoare annotation [2022-04-27 21:05:29,555 WARN L170 areAnnotationChecker]: mainENTRY has no Hoare annotation [2022-04-27 21:05:29,555 WARN L170 areAnnotationChecker]: __VERIFIER_assertENTRY has no Hoare annotation [2022-04-27 21:05:29,555 WARN L170 areAnnotationChecker]: ULTIMATE.initFINAL has no Hoare annotation [2022-04-27 21:05:29,555 WARN L170 areAnnotationChecker]: L21 has no Hoare annotation [2022-04-27 21:05:29,555 WARN L170 areAnnotationChecker]: L21 has no Hoare annotation [2022-04-27 21:05:29,555 WARN L170 areAnnotationChecker]: L10 has no Hoare annotation [2022-04-27 21:05:29,556 WARN L170 areAnnotationChecker]: L10 has no Hoare annotation [2022-04-27 21:05:29,556 WARN L170 areAnnotationChecker]: ULTIMATE.initEXIT has no Hoare annotation [2022-04-27 21:05:29,556 WARN L170 areAnnotationChecker]: mainFINAL has no Hoare annotation [2022-04-27 21:05:29,556 WARN L170 areAnnotationChecker]: L22-2 has no Hoare annotation [2022-04-27 21:05:29,556 WARN L170 areAnnotationChecker]: L22-2 has no Hoare annotation [2022-04-27 21:05:29,556 WARN L170 areAnnotationChecker]: L22-2 has no Hoare annotation [2022-04-27 21:05:29,556 WARN L170 areAnnotationChecker]: L11 has no Hoare annotation [2022-04-27 21:05:29,556 WARN L170 areAnnotationChecker]: L11 has no Hoare annotation [2022-04-27 21:05:29,556 WARN L170 areAnnotationChecker]: L10-2 has no Hoare annotation [2022-04-27 21:05:29,556 WARN L170 areAnnotationChecker]: L-1 has no Hoare annotation [2022-04-27 21:05:29,556 WARN L170 areAnnotationChecker]: mainEXIT has no Hoare annotation [2022-04-27 21:05:29,556 WARN L170 areAnnotationChecker]: L22-3 has no Hoare annotation [2022-04-27 21:05:29,556 WARN L170 areAnnotationChecker]: L25 has no Hoare annotation [2022-04-27 21:05:29,556 WARN L170 areAnnotationChecker]: __VERIFIER_assertEXIT has no Hoare annotation [2022-04-27 21:05:29,556 WARN L170 areAnnotationChecker]: __VERIFIER_assertEXIT has no Hoare annotation [2022-04-27 21:05:29,556 WARN L170 areAnnotationChecker]: __VERIFIER_assertEXIT has no Hoare annotation [2022-04-27 21:05:29,556 WARN L170 areAnnotationChecker]: ULTIMATE.startFINAL has no Hoare annotation [2022-04-27 21:05:29,557 WARN L170 areAnnotationChecker]: L25-1 has no Hoare annotation [2022-04-27 21:05:29,557 WARN L170 areAnnotationChecker]: L29-1 has no Hoare annotation [2022-04-27 21:05:29,557 WARN L170 areAnnotationChecker]: L27 has no Hoare annotation [2022-04-27 21:05:29,557 WARN L170 areAnnotationChecker]: L27 has no Hoare annotation [2022-04-27 21:05:29,557 WARN L170 areAnnotationChecker]: L29 has no Hoare annotation [2022-04-27 21:05:29,557 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 21:05:29,557 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.04 09:05:29 BasicIcfg [2022-04-27 21:05:29,557 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-04-27 21:05:29,558 INFO L158 Benchmark]: Toolchain (without parser) took 2265.55ms. Allocated memory was 232.8MB in the beginning and 327.2MB in the end (delta: 94.4MB). Free memory was 179.1MB in the beginning and 216.2MB in the end (delta: -37.1MB). Peak memory consumption was 58.1MB. Max. memory is 8.0GB. [2022-04-27 21:05:29,559 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 232.8MB. Free memory was 195.3MB in the beginning and 195.2MB in the end (delta: 122.3kB). There was no memory consumed. Max. memory is 8.0GB. [2022-04-27 21:05:29,559 INFO L158 Benchmark]: CACSL2BoogieTranslator took 174.98ms. Allocated memory was 232.8MB in the beginning and 327.2MB in the end (delta: 94.4MB). Free memory was 179.0MB in the beginning and 300.6MB in the end (delta: -121.6MB). Peak memory consumption was 8.9MB. Max. memory is 8.0GB. [2022-04-27 21:05:29,559 INFO L158 Benchmark]: Boogie Preprocessor took 20.35ms. Allocated memory is still 327.2MB. Free memory was 300.6MB in the beginning and 299.3MB in the end (delta: 1.3MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-04-27 21:05:29,560 INFO L158 Benchmark]: RCFGBuilder took 219.22ms. Allocated memory is still 327.2MB. Free memory was 299.3MB in the beginning and 288.2MB in the end (delta: 11.1MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2022-04-27 21:05:29,560 INFO L158 Benchmark]: IcfgTransformer took 22.25ms. Allocated memory is still 327.2MB. Free memory was 288.2MB in the beginning and 286.7MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-04-27 21:05:29,560 INFO L158 Benchmark]: TraceAbstraction took 1824.12ms. Allocated memory is still 327.2MB. Free memory was 286.1MB in the beginning and 216.2MB in the end (delta: 69.8MB). Peak memory consumption was 70.3MB. Max. memory is 8.0GB. [2022-04-27 21:05:29,562 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 232.8MB. Free memory was 195.3MB in the beginning and 195.2MB in the end (delta: 122.3kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 174.98ms. Allocated memory was 232.8MB in the beginning and 327.2MB in the end (delta: 94.4MB). Free memory was 179.0MB in the beginning and 300.6MB in the end (delta: -121.6MB). Peak memory consumption was 8.9MB. Max. memory is 8.0GB. * Boogie Preprocessor took 20.35ms. Allocated memory is still 327.2MB. Free memory was 300.6MB in the beginning and 299.3MB in the end (delta: 1.3MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 219.22ms. Allocated memory is still 327.2MB. Free memory was 299.3MB in the beginning and 288.2MB in the end (delta: 11.1MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * IcfgTransformer took 22.25ms. Allocated memory is still 327.2MB. Free memory was 288.2MB in the beginning and 286.7MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * TraceAbstraction took 1824.12ms. Allocated memory is still 327.2MB. Free memory was 286.1MB in the beginning and 216.2MB in the end (delta: 69.8MB). Peak memory consumption was 70.3MB. 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: 11]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L19] int i=0, x=0, y=0; [L20] int n=__VERIFIER_nondet_int(); [L21] COND FALSE !(!(n>0)) [L22] i=0 VAL [i=0, n=1, x=0, y=0] [L22] COND TRUE i