/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/locks/test_locks_5.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-fb4f59a-m [2022-04-28 02:02:32,112 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-04-28 02:02:32,114 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-04-28 02:02:32,151 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-04-28 02:02:32,162 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-04-28 02:02:32,164 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-04-28 02:02:32,164 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-04-28 02:02:32,166 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-04-28 02:02:32,167 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-04-28 02:02:32,167 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-04-28 02:02:32,169 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-04-28 02:02:32,173 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-04-28 02:02:32,174 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-04-28 02:02:32,175 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-04-28 02:02:32,176 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-04-28 02:02:32,176 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-04-28 02:02:32,177 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-04-28 02:02:32,181 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-04-28 02:02:32,185 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-04-28 02:02:32,185 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-04-28 02:02:32,186 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-04-28 02:02:32,186 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/loopacceleration/qvasr/qvasr_64.epf [2022-04-28 02:02:32,199 INFO L113 SettingsManager]: Loading preferences was successful [2022-04-28 02:02:32,199 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-04-28 02:02:32,200 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-04-28 02:02:32,200 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-04-28 02:02:32,200 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-04-28 02:02:32,200 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-04-28 02:02:32,201 INFO L138 SettingsManager]: * Use SBE=true [2022-04-28 02:02:32,201 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-04-28 02:02:32,201 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-04-28 02:02:32,201 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-04-28 02:02:32,201 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-04-28 02:02:32,201 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-04-28 02:02:32,201 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-04-28 02:02:32,201 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-04-28 02:02:32,201 INFO L138 SettingsManager]: * Use constant arrays=true [2022-04-28 02:02:32,201 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-04-28 02:02:32,201 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-04-28 02:02:32,202 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-04-28 02:02:32,202 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-04-28 02:02:32,202 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-28 02:02:32,202 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-04-28 02:02:32,202 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-04-28 02:02:32,202 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-04-28 02:02:32,202 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-04-28 02:02:32,202 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-04-28 02:02:32,202 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-04-28 02:02:32,202 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-04-28 02:02:32,202 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-04-28 02:02:32,203 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-04-28 02:02:32,203 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-04-28 02:02:32,344 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-04-28 02:02:32,361 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-04-28 02:02:32,362 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-04-28 02:02:32,363 INFO L271 PluginConnector]: Initializing CDTParser... [2022-04-28 02:02:32,364 INFO L275 PluginConnector]: CDTParser initialized [2022-04-28 02:02:32,364 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/locks/test_locks_5.c [2022-04-28 02:02:32,401 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ae133ac3b/26f597ac420d4108893f982fdf29905a/FLAGb0fac96a6 [2022-04-28 02:02:32,706 INFO L306 CDTParser]: Found 1 translation units. [2022-04-28 02:02:32,706 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/locks/test_locks_5.c [2022-04-28 02:02:32,712 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ae133ac3b/26f597ac420d4108893f982fdf29905a/FLAGb0fac96a6 [2022-04-28 02:02:33,149 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ae133ac3b/26f597ac420d4108893f982fdf29905a [2022-04-28 02:02:33,150 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-04-28 02:02:33,151 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-04-28 02:02:33,163 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-04-28 02:02:33,163 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-04-28 02:02:33,167 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-04-28 02:02:33,167 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.04 02:02:33" (1/1) ... [2022-04-28 02:02:33,168 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d115d9c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 02:02:33, skipping insertion in model container [2022-04-28 02:02:33,168 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.04 02:02:33" (1/1) ... [2022-04-28 02:02:33,173 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-04-28 02:02:33,184 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-04-28 02:02:33,329 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/locks/test_locks_5.c[2207,2220] [2022-04-28 02:02:33,331 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-28 02:02:33,337 INFO L203 MainTranslator]: Completed pre-run [2022-04-28 02:02:33,350 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/locks/test_locks_5.c[2207,2220] [2022-04-28 02:02:33,350 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-28 02:02:33,358 INFO L208 MainTranslator]: Completed translation [2022-04-28 02:02:33,358 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 02:02:33 WrapperNode [2022-04-28 02:02:33,358 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-04-28 02:02:33,359 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-04-28 02:02:33,360 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-04-28 02:02:33,360 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-04-28 02:02:33,366 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 02:02:33" (1/1) ... [2022-04-28 02:02:33,366 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 02:02:33" (1/1) ... [2022-04-28 02:02:33,370 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 02:02:33" (1/1) ... [2022-04-28 02:02:33,370 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 02:02:33" (1/1) ... [2022-04-28 02:02:33,374 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 02:02:33" (1/1) ... [2022-04-28 02:02:33,377 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 02:02:33" (1/1) ... [2022-04-28 02:02:33,378 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 02:02:33" (1/1) ... [2022-04-28 02:02:33,380 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-04-28 02:02:33,381 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-04-28 02:02:33,381 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-04-28 02:02:33,381 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-04-28 02:02:33,386 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 02:02:33" (1/1) ... [2022-04-28 02:02:33,392 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-28 02:02:33,414 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-28 02:02:33,423 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) [2022-04-28 02:02:33,454 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 [2022-04-28 02:02:33,464 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-04-28 02:02:33,465 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-04-28 02:02:33,465 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-04-28 02:02:33,465 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-04-28 02:02:33,465 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-04-28 02:02:33,465 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-04-28 02:02:33,466 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-04-28 02:02:33,466 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-04-28 02:02:33,468 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-04-28 02:02:33,468 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-04-28 02:02:33,468 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-04-28 02:02:33,468 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-04-28 02:02:33,468 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-04-28 02:02:33,468 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-04-28 02:02:33,468 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-04-28 02:02:33,469 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-04-28 02:02:33,515 INFO L234 CfgBuilder]: Building ICFG [2022-04-28 02:02:33,516 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-04-28 02:02:33,687 INFO L275 CfgBuilder]: Performing block encoding [2022-04-28 02:02:33,692 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-04-28 02:02:33,692 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-04-28 02:02:33,693 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.04 02:02:33 BoogieIcfgContainer [2022-04-28 02:02:33,694 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-04-28 02:02:33,694 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-04-28 02:02:33,694 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-04-28 02:02:33,699 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-04-28 02:02:33,709 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.04 02:02:33" (1/1) ... [2022-04-28 02:02:33,711 INFO L168 ansformationObserver]: Applying ICFG transformation LOOP_ACCELERATION_QVASR [2022-04-28 02:02:33,760 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 28.04 02:02:33 BasicIcfg [2022-04-28 02:02:33,760 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-04-28 02:02:33,762 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-04-28 02:02:33,762 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-04-28 02:02:33,764 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-04-28 02:02:33,764 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.04 02:02:33" (1/4) ... [2022-04-28 02:02:33,765 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e90dbf7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.04 02:02:33, skipping insertion in model container [2022-04-28 02:02:33,765 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 02:02:33" (2/4) ... [2022-04-28 02:02:33,765 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e90dbf7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.04 02:02:33, skipping insertion in model container [2022-04-28 02:02:33,765 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.04 02:02:33" (3/4) ... [2022-04-28 02:02:33,765 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e90dbf7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.04 02:02:33, skipping insertion in model container [2022-04-28 02:02:33,765 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 28.04 02:02:33" (4/4) ... [2022-04-28 02:02:33,766 INFO L111 eAbstractionObserver]: Analyzing ICFG test_locks_5.cqvasr [2022-04-28 02:02:33,792 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-04-28 02:02:33,792 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-04-28 02:02:33,846 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-28 02:02:33,850 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@17b25554, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@5dc6ab0e [2022-04-28 02:02:33,850 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-04-28 02:02:33,860 INFO L276 IsEmpty]: Start isEmpty. Operand has 30 states, 24 states have (on average 1.7916666666666667) internal successors, (43), 25 states have internal predecessors, (43), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-04-28 02:02:33,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-04-28 02:02:33,865 INFO L187 NwaCegarLoop]: Found error trace [2022-04-28 02:02:33,865 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-28 02:02:33,866 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-28 02:02:33,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-28 02:02:33,870 INFO L85 PathProgramCache]: Analyzing trace with hash -655326661, now seen corresponding path program 1 times [2022-04-28 02:02:33,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-28 02:02:33,879 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522258388] [2022-04-28 02:02:33,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-28 02:02:33,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-28 02:02:33,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-28 02:02:34,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-28 02:02:34,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-28 02:02:34,095 INFO L290 TraceCheckUtils]: 0: Hoare triple {39#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} [120] ULTIMATE.initENTRY-->ULTIMATE.initFINAL: Formula: (let ((.cse0 (select |v_#memory_int_1| 1))) (and (= (select |v_#length_1| 2) 15) (= 48 (select .cse0 0)) (= (select |v_#valid_1| 2) 1) (= (select |v_#valid_1| 0) 0) (< 0 |v_#StackHeapBarrier_1|) (= |v_#NULL.base_1| 0) (= 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] {33#true} is VALID [2022-04-28 02:02:34,095 INFO L290 TraceCheckUtils]: 1: Hoare triple {33#true} [123] ULTIMATE.initFINAL-->ULTIMATE.initEXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {33#true} is VALID [2022-04-28 02:02:34,096 INFO L284 TraceCheckUtils]: 2: Hoare quadruple {33#true} {33#true} [163] ULTIMATE.initEXIT-->L-1: AOR: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] LVA: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {33#true} is VALID [2022-04-28 02:02:34,097 INFO L272 TraceCheckUtils]: 0: Hoare triple {33#true} [118] ULTIMATE.startENTRY-->ULTIMATE.initENTRY: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {39#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} is VALID [2022-04-28 02:02:34,097 INFO L290 TraceCheckUtils]: 1: Hoare triple {39#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} [120] ULTIMATE.initENTRY-->ULTIMATE.initFINAL: Formula: (let ((.cse0 (select |v_#memory_int_1| 1))) (and (= (select |v_#length_1| 2) 15) (= 48 (select .cse0 0)) (= (select |v_#valid_1| 2) 1) (= (select |v_#valid_1| 0) 0) (< 0 |v_#StackHeapBarrier_1|) (= |v_#NULL.base_1| 0) (= 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] {33#true} is VALID [2022-04-28 02:02:34,098 INFO L290 TraceCheckUtils]: 2: Hoare triple {33#true} [123] ULTIMATE.initFINAL-->ULTIMATE.initEXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {33#true} is VALID [2022-04-28 02:02:34,099 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {33#true} {33#true} [163] ULTIMATE.initEXIT-->L-1: AOR: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] LVA: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {33#true} is VALID [2022-04-28 02:02:34,099 INFO L272 TraceCheckUtils]: 4: Hoare triple {33#true} [119] L-1-->mainENTRY: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {33#true} is VALID [2022-04-28 02:02:34,102 INFO L290 TraceCheckUtils]: 5: Hoare triple {33#true} [122] mainENTRY-->L85-1: Formula: (and (= v_main_~p4~0_1 |v_main_#t~nondet7_2|) (<= |v_main_#t~nondet8_2| 2147483647) (<= |v_main_#t~nondet5_2| 2147483647) (<= 0 (+ |v_main_#t~nondet8_2| 2147483648)) (<= |v_main_#t~nondet6_2| 2147483647) (= v_main_~p1~0_1 |v_main_#t~nondet4_2|) (= v_main_~p2~0_2 |v_main_#t~nondet5_2|) (= v_main_~p5~0_1 |v_main_#t~nondet8_2|) (<= 0 (+ |v_main_#t~nondet4_2| 2147483648)) (<= 0 (+ |v_main_#t~nondet7_2| 2147483648)) (= v_main_~p3~0_1 |v_main_#t~nondet6_2|) (<= |v_main_#t~nondet4_2| 2147483647) (<= 0 (+ |v_main_#t~nondet6_2| 2147483648)) (<= 0 (+ |v_main_#t~nondet5_2| 2147483648)) (<= |v_main_#t~nondet7_2| 2147483647)) InVars {main_#t~nondet5=|v_main_#t~nondet5_2|, main_#t~nondet4=|v_main_#t~nondet4_2|, main_#t~nondet7=|v_main_#t~nondet7_2|, main_#t~nondet6=|v_main_#t~nondet6_2|, main_#t~nondet8=|v_main_#t~nondet8_2|} OutVars{main_~p5~0=v_main_~p5~0_1, main_~lk2~0=v_main_~lk2~0_4, main_~lk3~0=v_main_~lk3~0_1, main_~p1~0=v_main_~p1~0_1, main_~lk1~0=v_main_~lk1~0_1, main_~lk5~0=v_main_~lk5~0_1, main_~lk4~0=v_main_~lk4~0_1, main_~p3~0=v_main_~p3~0_1, main_~p2~0=v_main_~p2~0_2, main_~p4~0=v_main_~p4~0_1, main_~cond~0=v_main_~cond~0_1} AuxVars[] AssignedVars[main_#t~nondet5, main_#t~nondet4, main_#t~nondet7, main_~lk3~0, main_#t~nondet6, main_~p1~0, main_~lk1~0, main_~lk5~0, main_~p2~0, main_~p4~0, main_#t~nondet8, main_~cond~0, main_~p5~0, main_~lk2~0, main_~lk4~0, main_~p3~0] {33#true} is VALID [2022-04-28 02:02:34,102 INFO L290 TraceCheckUtils]: 6: Hoare triple {33#true} [126] L85-1-->L28: Formula: (and (= |v_main_#t~nondet9_2| v_main_~cond~0_2) (<= 0 (+ |v_main_#t~nondet9_2| 2147483648)) (<= |v_main_#t~nondet9_2| 2147483647)) InVars {main_#t~nondet9=|v_main_#t~nondet9_2|} OutVars{main_~cond~0=v_main_~cond~0_2} AuxVars[] AssignedVars[main_#t~nondet9, main_~cond~0] {33#true} is VALID [2022-04-28 02:02:34,102 INFO L290 TraceCheckUtils]: 7: Hoare triple {33#true} [129] L28-->L43: Formula: (and (= v_main_~lk4~0_2 0) (= v_main_~lk1~0_2 0) (= v_main_~lk3~0_5 0) (= v_main_~lk2~0_5 0) (not (= 0 v_main_~cond~0_4)) (= v_main_~lk5~0_2 0)) InVars {main_~cond~0=v_main_~cond~0_4} OutVars{main_~lk2~0=v_main_~lk2~0_5, main_~lk3~0=v_main_~lk3~0_5, main_~lk1~0=v_main_~lk1~0_2, main_~lk5~0=v_main_~lk5~0_2, main_~lk4~0=v_main_~lk4~0_2, main_~cond~0=v_main_~cond~0_4} AuxVars[] AssignedVars[main_~lk2~0, main_~lk3~0, main_~lk1~0, main_~lk5~0, main_~lk4~0] {33#true} is VALID [2022-04-28 02:02:34,103 INFO L290 TraceCheckUtils]: 8: Hoare triple {33#true} [131] L43-->L43-2: Formula: (and (= v_main_~lk1~0_3 1) (not (= v_main_~p1~0_2 0))) InVars {main_~p1~0=v_main_~p1~0_2} OutVars{main_~p1~0=v_main_~p1~0_2, main_~lk1~0=v_main_~lk1~0_3} AuxVars[] AssignedVars[main_~lk1~0] {38#(= main_~lk1~0 1)} is VALID [2022-04-28 02:02:34,104 INFO L290 TraceCheckUtils]: 9: Hoare triple {38#(= main_~lk1~0 1)} [133] L43-2-->L47-1: Formula: (and (= v_main_~lk2~0_6 1) (not (= v_main_~p2~0_4 0))) InVars {main_~p2~0=v_main_~p2~0_4} OutVars{main_~lk2~0=v_main_~lk2~0_6, main_~p2~0=v_main_~p2~0_4} AuxVars[] AssignedVars[main_~lk2~0] {38#(= main_~lk1~0 1)} is VALID [2022-04-28 02:02:34,105 INFO L290 TraceCheckUtils]: 10: Hoare triple {38#(= main_~lk1~0 1)} [135] L47-1-->L51-1: Formula: (and (= v_main_~lk3~0_6 1) (not (= v_main_~p3~0_4 0))) InVars {main_~p3~0=v_main_~p3~0_4} OutVars{main_~p3~0=v_main_~p3~0_4, main_~lk3~0=v_main_~lk3~0_6} AuxVars[] AssignedVars[main_~lk3~0] {38#(= main_~lk1~0 1)} is VALID [2022-04-28 02:02:34,107 INFO L290 TraceCheckUtils]: 11: Hoare triple {38#(= main_~lk1~0 1)} [137] L51-1-->L55-1: Formula: (and (not (= v_main_~p4~0_4 0)) (= v_main_~lk4~0_6 1)) InVars {main_~p4~0=v_main_~p4~0_4} OutVars{main_~p4~0=v_main_~p4~0_4, main_~lk4~0=v_main_~lk4~0_6} AuxVars[] AssignedVars[main_~lk4~0] {38#(= main_~lk1~0 1)} is VALID [2022-04-28 02:02:34,108 INFO L290 TraceCheckUtils]: 12: Hoare triple {38#(= main_~lk1~0 1)} [139] L55-1-->L59-1: Formula: (and (= v_main_~lk5~0_6 1) (not (= v_main_~p5~0_4 0))) InVars {main_~p5~0=v_main_~p5~0_4} OutVars{main_~p5~0=v_main_~p5~0_4, main_~lk5~0=v_main_~lk5~0_6} AuxVars[] AssignedVars[main_~lk5~0] {38#(= main_~lk1~0 1)} is VALID [2022-04-28 02:02:34,110 INFO L290 TraceCheckUtils]: 13: Hoare triple {38#(= main_~lk1~0 1)} [141] L59-1-->L66: Formula: (not (= v_main_~p1~0_4 0)) InVars {main_~p1~0=v_main_~p1~0_4} OutVars{main_~p1~0=v_main_~p1~0_4} AuxVars[] AssignedVars[] {38#(= main_~lk1~0 1)} is VALID [2022-04-28 02:02:34,111 INFO L290 TraceCheckUtils]: 14: Hoare triple {38#(= main_~lk1~0 1)} [143] L66-->L86-1: Formula: (not (= v_main_~lk1~0_4 1)) InVars {main_~lk1~0=v_main_~lk1~0_4} OutVars{main_~lk1~0=v_main_~lk1~0_4} AuxVars[] AssignedVars[] {34#false} is VALID [2022-04-28 02:02:34,112 INFO L290 TraceCheckUtils]: 15: Hoare triple {34#false} [147] L86-1-->mainErr0ASSERT_VIOLATIONERROR_FUNCTION: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {34#false} is VALID [2022-04-28 02:02:34,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-28 02:02:34,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-28 02:02:34,113 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [522258388] [2022-04-28 02:02:34,113 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [522258388] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-28 02:02:34,113 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-28 02:02:34,113 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-04-28 02:02:34,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854752448] [2022-04-28 02:02:34,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-28 02:02:34,118 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2022-04-28 02:02:34,119 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-28 02:02:34,121 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 02:02:34,145 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 16 edges. 16 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-28 02:02:34,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-04-28 02:02:34,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-28 02:02:34,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-04-28 02:02:34,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-04-28 02:02:34,164 INFO L87 Difference]: Start difference. First operand has 30 states, 24 states have (on average 1.7916666666666667) internal successors, (43), 25 states have internal predecessors, (43), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 02:02:34,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 02:02:34,370 INFO L93 Difference]: Finished difference Result 58 states and 91 transitions. [2022-04-28 02:02:34,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-04-28 02:02:34,371 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2022-04-28 02:02:34,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-28 02:02:34,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 02:02:34,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 91 transitions. [2022-04-28 02:02:34,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 02:02:34,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 91 transitions. [2022-04-28 02:02:34,389 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 4 states and 91 transitions. [2022-04-28 02:02:34,458 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 91 edges. 91 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-28 02:02:34,466 INFO L225 Difference]: With dead ends: 58 [2022-04-28 02:02:34,466 INFO L226 Difference]: Without dead ends: 43 [2022-04-28 02:02:34,469 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-04-28 02:02:34,472 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 89 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-28 02:02:34,472 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 59 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-28 02:02:34,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2022-04-28 02:02:34,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 31. [2022-04-28 02:02:34,494 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-28 02:02:34,495 INFO L82 GeneralOperation]: Start isEquivalent. First operand 43 states. Second operand has 31 states, 27 states have (on average 1.7407407407407407) internal successors, (47), 27 states have internal predecessors, (47), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 02:02:34,496 INFO L74 IsIncluded]: Start isIncluded. First operand 43 states. Second operand has 31 states, 27 states have (on average 1.7407407407407407) internal successors, (47), 27 states have internal predecessors, (47), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 02:02:34,496 INFO L87 Difference]: Start difference. First operand 43 states. Second operand has 31 states, 27 states have (on average 1.7407407407407407) internal successors, (47), 27 states have internal predecessors, (47), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 02:02:34,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 02:02:34,500 INFO L93 Difference]: Finished difference Result 43 states and 69 transitions. [2022-04-28 02:02:34,500 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 69 transitions. [2022-04-28 02:02:34,501 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-28 02:02:34,501 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-28 02:02:34,501 INFO L74 IsIncluded]: Start isIncluded. First operand has 31 states, 27 states have (on average 1.7407407407407407) internal successors, (47), 27 states have internal predecessors, (47), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Second operand 43 states. [2022-04-28 02:02:34,502 INFO L87 Difference]: Start difference. First operand has 31 states, 27 states have (on average 1.7407407407407407) internal successors, (47), 27 states have internal predecessors, (47), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Second operand 43 states. [2022-04-28 02:02:34,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 02:02:34,507 INFO L93 Difference]: Finished difference Result 43 states and 69 transitions. [2022-04-28 02:02:34,507 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 69 transitions. [2022-04-28 02:02:34,508 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-28 02:02:34,508 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-28 02:02:34,508 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-28 02:02:34,508 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-28 02:02:34,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 27 states have (on average 1.7407407407407407) internal successors, (47), 27 states have internal predecessors, (47), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 02:02:34,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 50 transitions. [2022-04-28 02:02:34,515 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 50 transitions. Word has length 16 [2022-04-28 02:02:34,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-28 02:02:34,519 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 50 transitions. [2022-04-28 02:02:34,520 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 02:02:34,520 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 50 transitions. [2022-04-28 02:02:34,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-04-28 02:02:34,521 INFO L187 NwaCegarLoop]: Found error trace [2022-04-28 02:02:34,521 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-28 02:02:34,521 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-04-28 02:02:34,521 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-28 02:02:34,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-28 02:02:34,522 INFO L85 PathProgramCache]: Analyzing trace with hash 1087483674, now seen corresponding path program 1 times [2022-04-28 02:02:34,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-28 02:02:34,522 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [560678080] [2022-04-28 02:02:34,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-28 02:02:34,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-28 02:02:34,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-28 02:02:34,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-28 02:02:34,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-28 02:02:34,585 INFO L290 TraceCheckUtils]: 0: Hoare triple {244#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} [120] ULTIMATE.initENTRY-->ULTIMATE.initFINAL: Formula: (let ((.cse0 (select |v_#memory_int_1| 1))) (and (= (select |v_#length_1| 2) 15) (= 48 (select .cse0 0)) (= (select |v_#valid_1| 2) 1) (= (select |v_#valid_1| 0) 0) (< 0 |v_#StackHeapBarrier_1|) (= |v_#NULL.base_1| 0) (= 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] {238#true} is VALID [2022-04-28 02:02:34,585 INFO L290 TraceCheckUtils]: 1: Hoare triple {238#true} [123] ULTIMATE.initFINAL-->ULTIMATE.initEXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {238#true} is VALID [2022-04-28 02:02:34,586 INFO L284 TraceCheckUtils]: 2: Hoare quadruple {238#true} {238#true} [163] ULTIMATE.initEXIT-->L-1: AOR: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] LVA: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {238#true} is VALID [2022-04-28 02:02:34,586 INFO L272 TraceCheckUtils]: 0: Hoare triple {238#true} [118] ULTIMATE.startENTRY-->ULTIMATE.initENTRY: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {244#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} is VALID [2022-04-28 02:02:34,586 INFO L290 TraceCheckUtils]: 1: Hoare triple {244#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} [120] ULTIMATE.initENTRY-->ULTIMATE.initFINAL: Formula: (let ((.cse0 (select |v_#memory_int_1| 1))) (and (= (select |v_#length_1| 2) 15) (= 48 (select .cse0 0)) (= (select |v_#valid_1| 2) 1) (= (select |v_#valid_1| 0) 0) (< 0 |v_#StackHeapBarrier_1|) (= |v_#NULL.base_1| 0) (= 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] {238#true} is VALID [2022-04-28 02:02:34,587 INFO L290 TraceCheckUtils]: 2: Hoare triple {238#true} [123] ULTIMATE.initFINAL-->ULTIMATE.initEXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {238#true} is VALID [2022-04-28 02:02:34,587 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {238#true} {238#true} [163] ULTIMATE.initEXIT-->L-1: AOR: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] LVA: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {238#true} is VALID [2022-04-28 02:02:34,587 INFO L272 TraceCheckUtils]: 4: Hoare triple {238#true} [119] L-1-->mainENTRY: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {238#true} is VALID [2022-04-28 02:02:34,587 INFO L290 TraceCheckUtils]: 5: Hoare triple {238#true} [122] mainENTRY-->L85-1: Formula: (and (= v_main_~p4~0_1 |v_main_#t~nondet7_2|) (<= |v_main_#t~nondet8_2| 2147483647) (<= |v_main_#t~nondet5_2| 2147483647) (<= 0 (+ |v_main_#t~nondet8_2| 2147483648)) (<= |v_main_#t~nondet6_2| 2147483647) (= v_main_~p1~0_1 |v_main_#t~nondet4_2|) (= v_main_~p2~0_2 |v_main_#t~nondet5_2|) (= v_main_~p5~0_1 |v_main_#t~nondet8_2|) (<= 0 (+ |v_main_#t~nondet4_2| 2147483648)) (<= 0 (+ |v_main_#t~nondet7_2| 2147483648)) (= v_main_~p3~0_1 |v_main_#t~nondet6_2|) (<= |v_main_#t~nondet4_2| 2147483647) (<= 0 (+ |v_main_#t~nondet6_2| 2147483648)) (<= 0 (+ |v_main_#t~nondet5_2| 2147483648)) (<= |v_main_#t~nondet7_2| 2147483647)) InVars {main_#t~nondet5=|v_main_#t~nondet5_2|, main_#t~nondet4=|v_main_#t~nondet4_2|, main_#t~nondet7=|v_main_#t~nondet7_2|, main_#t~nondet6=|v_main_#t~nondet6_2|, main_#t~nondet8=|v_main_#t~nondet8_2|} OutVars{main_~p5~0=v_main_~p5~0_1, main_~lk2~0=v_main_~lk2~0_4, main_~lk3~0=v_main_~lk3~0_1, main_~p1~0=v_main_~p1~0_1, main_~lk1~0=v_main_~lk1~0_1, main_~lk5~0=v_main_~lk5~0_1, main_~lk4~0=v_main_~lk4~0_1, main_~p3~0=v_main_~p3~0_1, main_~p2~0=v_main_~p2~0_2, main_~p4~0=v_main_~p4~0_1, main_~cond~0=v_main_~cond~0_1} AuxVars[] AssignedVars[main_#t~nondet5, main_#t~nondet4, main_#t~nondet7, main_~lk3~0, main_#t~nondet6, main_~p1~0, main_~lk1~0, main_~lk5~0, main_~p2~0, main_~p4~0, main_#t~nondet8, main_~cond~0, main_~p5~0, main_~lk2~0, main_~lk4~0, main_~p3~0] {238#true} is VALID [2022-04-28 02:02:34,587 INFO L290 TraceCheckUtils]: 6: Hoare triple {238#true} [126] L85-1-->L28: Formula: (and (= |v_main_#t~nondet9_2| v_main_~cond~0_2) (<= 0 (+ |v_main_#t~nondet9_2| 2147483648)) (<= |v_main_#t~nondet9_2| 2147483647)) InVars {main_#t~nondet9=|v_main_#t~nondet9_2|} OutVars{main_~cond~0=v_main_~cond~0_2} AuxVars[] AssignedVars[main_#t~nondet9, main_~cond~0] {238#true} is VALID [2022-04-28 02:02:34,587 INFO L290 TraceCheckUtils]: 7: Hoare triple {238#true} [129] L28-->L43: Formula: (and (= v_main_~lk4~0_2 0) (= v_main_~lk1~0_2 0) (= v_main_~lk3~0_5 0) (= v_main_~lk2~0_5 0) (not (= 0 v_main_~cond~0_4)) (= v_main_~lk5~0_2 0)) InVars {main_~cond~0=v_main_~cond~0_4} OutVars{main_~lk2~0=v_main_~lk2~0_5, main_~lk3~0=v_main_~lk3~0_5, main_~lk1~0=v_main_~lk1~0_2, main_~lk5~0=v_main_~lk5~0_2, main_~lk4~0=v_main_~lk4~0_2, main_~cond~0=v_main_~cond~0_4} AuxVars[] AssignedVars[main_~lk2~0, main_~lk3~0, main_~lk1~0, main_~lk5~0, main_~lk4~0] {238#true} is VALID [2022-04-28 02:02:34,588 INFO L290 TraceCheckUtils]: 8: Hoare triple {238#true} [132] L43-->L43-2: Formula: (= v_main_~p1~0_3 0) InVars {main_~p1~0=v_main_~p1~0_3} OutVars{main_~p1~0=v_main_~p1~0_3} AuxVars[] AssignedVars[] {243#(= main_~p1~0 0)} is VALID [2022-04-28 02:02:34,589 INFO L290 TraceCheckUtils]: 9: Hoare triple {243#(= main_~p1~0 0)} [133] L43-2-->L47-1: Formula: (and (= v_main_~lk2~0_6 1) (not (= v_main_~p2~0_4 0))) InVars {main_~p2~0=v_main_~p2~0_4} OutVars{main_~lk2~0=v_main_~lk2~0_6, main_~p2~0=v_main_~p2~0_4} AuxVars[] AssignedVars[main_~lk2~0] {243#(= main_~p1~0 0)} is VALID [2022-04-28 02:02:34,589 INFO L290 TraceCheckUtils]: 10: Hoare triple {243#(= main_~p1~0 0)} [135] L47-1-->L51-1: Formula: (and (= v_main_~lk3~0_6 1) (not (= v_main_~p3~0_4 0))) InVars {main_~p3~0=v_main_~p3~0_4} OutVars{main_~p3~0=v_main_~p3~0_4, main_~lk3~0=v_main_~lk3~0_6} AuxVars[] AssignedVars[main_~lk3~0] {243#(= main_~p1~0 0)} is VALID [2022-04-28 02:02:34,590 INFO L290 TraceCheckUtils]: 11: Hoare triple {243#(= main_~p1~0 0)} [137] L51-1-->L55-1: Formula: (and (not (= v_main_~p4~0_4 0)) (= v_main_~lk4~0_6 1)) InVars {main_~p4~0=v_main_~p4~0_4} OutVars{main_~p4~0=v_main_~p4~0_4, main_~lk4~0=v_main_~lk4~0_6} AuxVars[] AssignedVars[main_~lk4~0] {243#(= main_~p1~0 0)} is VALID [2022-04-28 02:02:34,590 INFO L290 TraceCheckUtils]: 12: Hoare triple {243#(= main_~p1~0 0)} [139] L55-1-->L59-1: Formula: (and (= v_main_~lk5~0_6 1) (not (= v_main_~p5~0_4 0))) InVars {main_~p5~0=v_main_~p5~0_4} OutVars{main_~p5~0=v_main_~p5~0_4, main_~lk5~0=v_main_~lk5~0_6} AuxVars[] AssignedVars[main_~lk5~0] {243#(= main_~p1~0 0)} is VALID [2022-04-28 02:02:34,590 INFO L290 TraceCheckUtils]: 13: Hoare triple {243#(= main_~p1~0 0)} [141] L59-1-->L66: Formula: (not (= v_main_~p1~0_4 0)) InVars {main_~p1~0=v_main_~p1~0_4} OutVars{main_~p1~0=v_main_~p1~0_4} AuxVars[] AssignedVars[] {239#false} is VALID [2022-04-28 02:02:34,590 INFO L290 TraceCheckUtils]: 14: Hoare triple {239#false} [143] L66-->L86-1: Formula: (not (= v_main_~lk1~0_4 1)) InVars {main_~lk1~0=v_main_~lk1~0_4} OutVars{main_~lk1~0=v_main_~lk1~0_4} AuxVars[] AssignedVars[] {239#false} is VALID [2022-04-28 02:02:34,591 INFO L290 TraceCheckUtils]: 15: Hoare triple {239#false} [147] L86-1-->mainErr0ASSERT_VIOLATIONERROR_FUNCTION: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {239#false} is VALID [2022-04-28 02:02:34,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-28 02:02:34,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-28 02:02:34,591 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [560678080] [2022-04-28 02:02:34,591 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [560678080] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-28 02:02:34,591 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-28 02:02:34,591 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-04-28 02:02:34,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196040316] [2022-04-28 02:02:34,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-28 02:02:34,594 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2022-04-28 02:02:34,594 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-28 02:02:34,594 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 02:02:34,603 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 16 edges. 16 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-28 02:02:34,604 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-04-28 02:02:34,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-28 02:02:34,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-04-28 02:02:34,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-04-28 02:02:34,608 INFO L87 Difference]: Start difference. First operand 31 states and 50 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 02:02:34,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 02:02:34,734 INFO L93 Difference]: Finished difference Result 68 states and 113 transitions. [2022-04-28 02:02:34,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-04-28 02:02:34,734 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2022-04-28 02:02:34,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-28 02:02:34,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 02:02:34,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 102 transitions. [2022-04-28 02:02:34,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 02:02:34,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 102 transitions. [2022-04-28 02:02:34,737 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 4 states and 102 transitions. [2022-04-28 02:02:34,821 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 102 edges. 102 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-28 02:02:34,822 INFO L225 Difference]: With dead ends: 68 [2022-04-28 02:02:34,822 INFO L226 Difference]: Without dead ends: 43 [2022-04-28 02:02:34,822 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-04-28 02:02:34,823 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 73 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-28 02:02:34,823 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 55 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-28 02:02:34,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2022-04-28 02:02:34,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 41. [2022-04-28 02:02:34,827 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-28 02:02:34,827 INFO L82 GeneralOperation]: Start isEquivalent. First operand 43 states. Second operand has 41 states, 37 states have (on average 1.7027027027027026) internal successors, (63), 37 states have internal predecessors, (63), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 02:02:34,827 INFO L74 IsIncluded]: Start isIncluded. First operand 43 states. Second operand has 41 states, 37 states have (on average 1.7027027027027026) internal successors, (63), 37 states have internal predecessors, (63), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 02:02:34,828 INFO L87 Difference]: Start difference. First operand 43 states. Second operand has 41 states, 37 states have (on average 1.7027027027027026) internal successors, (63), 37 states have internal predecessors, (63), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 02:02:34,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 02:02:34,834 INFO L93 Difference]: Finished difference Result 43 states and 67 transitions. [2022-04-28 02:02:34,834 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 67 transitions. [2022-04-28 02:02:34,834 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-28 02:02:34,834 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-28 02:02:34,835 INFO L74 IsIncluded]: Start isIncluded. First operand has 41 states, 37 states have (on average 1.7027027027027026) internal successors, (63), 37 states have internal predecessors, (63), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Second operand 43 states. [2022-04-28 02:02:34,835 INFO L87 Difference]: Start difference. First operand has 41 states, 37 states have (on average 1.7027027027027026) internal successors, (63), 37 states have internal predecessors, (63), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Second operand 43 states. [2022-04-28 02:02:34,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 02:02:34,836 INFO L93 Difference]: Finished difference Result 43 states and 67 transitions. [2022-04-28 02:02:34,836 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 67 transitions. [2022-04-28 02:02:34,837 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-28 02:02:34,837 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-28 02:02:34,837 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-28 02:02:34,837 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-28 02:02:34,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 37 states have (on average 1.7027027027027026) internal successors, (63), 37 states have internal predecessors, (63), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 02:02:34,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 66 transitions. [2022-04-28 02:02:34,839 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 66 transitions. Word has length 16 [2022-04-28 02:02:34,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-28 02:02:34,839 INFO L495 AbstractCegarLoop]: Abstraction has 41 states and 66 transitions. [2022-04-28 02:02:34,839 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 02:02:34,839 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 66 transitions. [2022-04-28 02:02:34,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-04-28 02:02:34,839 INFO L187 NwaCegarLoop]: Found error trace [2022-04-28 02:02:34,839 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-28 02:02:34,840 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-04-28 02:02:34,840 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-28 02:02:34,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-28 02:02:34,840 INFO L85 PathProgramCache]: Analyzing trace with hash 1159741911, now seen corresponding path program 1 times [2022-04-28 02:02:34,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-28 02:02:34,840 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [627917321] [2022-04-28 02:02:34,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-28 02:02:34,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-28 02:02:34,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-28 02:02:34,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-28 02:02:34,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-28 02:02:34,876 INFO L290 TraceCheckUtils]: 0: Hoare triple {468#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} [120] ULTIMATE.initENTRY-->ULTIMATE.initFINAL: Formula: (let ((.cse0 (select |v_#memory_int_1| 1))) (and (= (select |v_#length_1| 2) 15) (= 48 (select .cse0 0)) (= (select |v_#valid_1| 2) 1) (= (select |v_#valid_1| 0) 0) (< 0 |v_#StackHeapBarrier_1|) (= |v_#NULL.base_1| 0) (= 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] {462#true} is VALID [2022-04-28 02:02:34,876 INFO L290 TraceCheckUtils]: 1: Hoare triple {462#true} [123] ULTIMATE.initFINAL-->ULTIMATE.initEXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {462#true} is VALID [2022-04-28 02:02:34,877 INFO L284 TraceCheckUtils]: 2: Hoare quadruple {462#true} {462#true} [163] ULTIMATE.initEXIT-->L-1: AOR: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] LVA: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {462#true} is VALID [2022-04-28 02:02:34,877 INFO L272 TraceCheckUtils]: 0: Hoare triple {462#true} [118] ULTIMATE.startENTRY-->ULTIMATE.initENTRY: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {468#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} is VALID [2022-04-28 02:02:34,877 INFO L290 TraceCheckUtils]: 1: Hoare triple {468#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} [120] ULTIMATE.initENTRY-->ULTIMATE.initFINAL: Formula: (let ((.cse0 (select |v_#memory_int_1| 1))) (and (= (select |v_#length_1| 2) 15) (= 48 (select .cse0 0)) (= (select |v_#valid_1| 2) 1) (= (select |v_#valid_1| 0) 0) (< 0 |v_#StackHeapBarrier_1|) (= |v_#NULL.base_1| 0) (= 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] {462#true} is VALID [2022-04-28 02:02:34,878 INFO L290 TraceCheckUtils]: 2: Hoare triple {462#true} [123] ULTIMATE.initFINAL-->ULTIMATE.initEXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {462#true} is VALID [2022-04-28 02:02:34,878 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {462#true} {462#true} [163] ULTIMATE.initEXIT-->L-1: AOR: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] LVA: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {462#true} is VALID [2022-04-28 02:02:34,878 INFO L272 TraceCheckUtils]: 4: Hoare triple {462#true} [119] L-1-->mainENTRY: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {462#true} is VALID [2022-04-28 02:02:34,878 INFO L290 TraceCheckUtils]: 5: Hoare triple {462#true} [122] mainENTRY-->L85-1: Formula: (and (= v_main_~p4~0_1 |v_main_#t~nondet7_2|) (<= |v_main_#t~nondet8_2| 2147483647) (<= |v_main_#t~nondet5_2| 2147483647) (<= 0 (+ |v_main_#t~nondet8_2| 2147483648)) (<= |v_main_#t~nondet6_2| 2147483647) (= v_main_~p1~0_1 |v_main_#t~nondet4_2|) (= v_main_~p2~0_2 |v_main_#t~nondet5_2|) (= v_main_~p5~0_1 |v_main_#t~nondet8_2|) (<= 0 (+ |v_main_#t~nondet4_2| 2147483648)) (<= 0 (+ |v_main_#t~nondet7_2| 2147483648)) (= v_main_~p3~0_1 |v_main_#t~nondet6_2|) (<= |v_main_#t~nondet4_2| 2147483647) (<= 0 (+ |v_main_#t~nondet6_2| 2147483648)) (<= 0 (+ |v_main_#t~nondet5_2| 2147483648)) (<= |v_main_#t~nondet7_2| 2147483647)) InVars {main_#t~nondet5=|v_main_#t~nondet5_2|, main_#t~nondet4=|v_main_#t~nondet4_2|, main_#t~nondet7=|v_main_#t~nondet7_2|, main_#t~nondet6=|v_main_#t~nondet6_2|, main_#t~nondet8=|v_main_#t~nondet8_2|} OutVars{main_~p5~0=v_main_~p5~0_1, main_~lk2~0=v_main_~lk2~0_4, main_~lk3~0=v_main_~lk3~0_1, main_~p1~0=v_main_~p1~0_1, main_~lk1~0=v_main_~lk1~0_1, main_~lk5~0=v_main_~lk5~0_1, main_~lk4~0=v_main_~lk4~0_1, main_~p3~0=v_main_~p3~0_1, main_~p2~0=v_main_~p2~0_2, main_~p4~0=v_main_~p4~0_1, main_~cond~0=v_main_~cond~0_1} AuxVars[] AssignedVars[main_#t~nondet5, main_#t~nondet4, main_#t~nondet7, main_~lk3~0, main_#t~nondet6, main_~p1~0, main_~lk1~0, main_~lk5~0, main_~p2~0, main_~p4~0, main_#t~nondet8, main_~cond~0, main_~p5~0, main_~lk2~0, main_~lk4~0, main_~p3~0] {462#true} is VALID [2022-04-28 02:02:34,878 INFO L290 TraceCheckUtils]: 6: Hoare triple {462#true} [126] L85-1-->L28: Formula: (and (= |v_main_#t~nondet9_2| v_main_~cond~0_2) (<= 0 (+ |v_main_#t~nondet9_2| 2147483648)) (<= |v_main_#t~nondet9_2| 2147483647)) InVars {main_#t~nondet9=|v_main_#t~nondet9_2|} OutVars{main_~cond~0=v_main_~cond~0_2} AuxVars[] AssignedVars[main_#t~nondet9, main_~cond~0] {462#true} is VALID [2022-04-28 02:02:34,878 INFO L290 TraceCheckUtils]: 7: Hoare triple {462#true} [129] L28-->L43: Formula: (and (= v_main_~lk4~0_2 0) (= v_main_~lk1~0_2 0) (= v_main_~lk3~0_5 0) (= v_main_~lk2~0_5 0) (not (= 0 v_main_~cond~0_4)) (= v_main_~lk5~0_2 0)) InVars {main_~cond~0=v_main_~cond~0_4} OutVars{main_~lk2~0=v_main_~lk2~0_5, main_~lk3~0=v_main_~lk3~0_5, main_~lk1~0=v_main_~lk1~0_2, main_~lk5~0=v_main_~lk5~0_2, main_~lk4~0=v_main_~lk4~0_2, main_~cond~0=v_main_~cond~0_4} AuxVars[] AssignedVars[main_~lk2~0, main_~lk3~0, main_~lk1~0, main_~lk5~0, main_~lk4~0] {462#true} is VALID [2022-04-28 02:02:34,879 INFO L290 TraceCheckUtils]: 8: Hoare triple {462#true} [131] L43-->L43-2: Formula: (and (= v_main_~lk1~0_3 1) (not (= v_main_~p1~0_2 0))) InVars {main_~p1~0=v_main_~p1~0_2} OutVars{main_~p1~0=v_main_~p1~0_2, main_~lk1~0=v_main_~lk1~0_3} AuxVars[] AssignedVars[main_~lk1~0] {467#(not (= main_~p1~0 0))} is VALID [2022-04-28 02:02:34,879 INFO L290 TraceCheckUtils]: 9: Hoare triple {467#(not (= main_~p1~0 0))} [133] L43-2-->L47-1: Formula: (and (= v_main_~lk2~0_6 1) (not (= v_main_~p2~0_4 0))) InVars {main_~p2~0=v_main_~p2~0_4} OutVars{main_~lk2~0=v_main_~lk2~0_6, main_~p2~0=v_main_~p2~0_4} AuxVars[] AssignedVars[main_~lk2~0] {467#(not (= main_~p1~0 0))} is VALID [2022-04-28 02:02:34,879 INFO L290 TraceCheckUtils]: 10: Hoare triple {467#(not (= main_~p1~0 0))} [135] L47-1-->L51-1: Formula: (and (= v_main_~lk3~0_6 1) (not (= v_main_~p3~0_4 0))) InVars {main_~p3~0=v_main_~p3~0_4} OutVars{main_~p3~0=v_main_~p3~0_4, main_~lk3~0=v_main_~lk3~0_6} AuxVars[] AssignedVars[main_~lk3~0] {467#(not (= main_~p1~0 0))} is VALID [2022-04-28 02:02:34,880 INFO L290 TraceCheckUtils]: 11: Hoare triple {467#(not (= main_~p1~0 0))} [137] L51-1-->L55-1: Formula: (and (not (= v_main_~p4~0_4 0)) (= v_main_~lk4~0_6 1)) InVars {main_~p4~0=v_main_~p4~0_4} OutVars{main_~p4~0=v_main_~p4~0_4, main_~lk4~0=v_main_~lk4~0_6} AuxVars[] AssignedVars[main_~lk4~0] {467#(not (= main_~p1~0 0))} is VALID [2022-04-28 02:02:34,880 INFO L290 TraceCheckUtils]: 12: Hoare triple {467#(not (= main_~p1~0 0))} [139] L55-1-->L59-1: Formula: (and (= v_main_~lk5~0_6 1) (not (= v_main_~p5~0_4 0))) InVars {main_~p5~0=v_main_~p5~0_4} OutVars{main_~p5~0=v_main_~p5~0_4, main_~lk5~0=v_main_~lk5~0_6} AuxVars[] AssignedVars[main_~lk5~0] {467#(not (= main_~p1~0 0))} is VALID [2022-04-28 02:02:34,880 INFO L290 TraceCheckUtils]: 13: Hoare triple {467#(not (= main_~p1~0 0))} [142] L59-1-->L65-1: Formula: (= v_main_~p1~0_5 0) InVars {main_~p1~0=v_main_~p1~0_5} OutVars{main_~p1~0=v_main_~p1~0_5} AuxVars[] AssignedVars[] {463#false} is VALID [2022-04-28 02:02:34,881 INFO L290 TraceCheckUtils]: 14: Hoare triple {463#false} [145] L65-1-->L71: Formula: (not (= v_main_~p2~0_1 0)) InVars {main_~p2~0=v_main_~p2~0_1} OutVars{main_~p2~0=v_main_~p2~0_1} AuxVars[] AssignedVars[] {463#false} is VALID [2022-04-28 02:02:34,881 INFO L290 TraceCheckUtils]: 15: Hoare triple {463#false} [149] L71-->L86-1: Formula: (not (= v_main_~lk2~0_1 1)) InVars {main_~lk2~0=v_main_~lk2~0_1} OutVars{main_~lk2~0=v_main_~lk2~0_1} AuxVars[] AssignedVars[] {463#false} is VALID [2022-04-28 02:02:34,881 INFO L290 TraceCheckUtils]: 16: Hoare triple {463#false} [147] L86-1-->mainErr0ASSERT_VIOLATIONERROR_FUNCTION: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {463#false} is VALID [2022-04-28 02:02:34,881 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-28 02:02:34,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-28 02:02:34,881 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [627917321] [2022-04-28 02:02:34,881 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [627917321] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-28 02:02:34,882 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-28 02:02:34,882 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-04-28 02:02:34,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662074040] [2022-04-28 02:02:34,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-28 02:02:34,882 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2022-04-28 02:02:34,882 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-28 02:02:34,882 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 02:02:34,893 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 17 edges. 17 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-28 02:02:34,893 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-04-28 02:02:34,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-28 02:02:34,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-04-28 02:02:34,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-04-28 02:02:34,894 INFO L87 Difference]: Start difference. First operand 41 states and 66 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 02:02:34,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 02:02:34,977 INFO L93 Difference]: Finished difference Result 64 states and 100 transitions. [2022-04-28 02:02:34,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-04-28 02:02:34,977 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2022-04-28 02:02:34,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-28 02:02:34,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 02:02:34,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 97 transitions. [2022-04-28 02:02:34,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 02:02:34,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 97 transitions. [2022-04-28 02:02:34,980 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 4 states and 97 transitions. [2022-04-28 02:02:35,052 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 97 edges. 97 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-28 02:02:35,053 INFO L225 Difference]: With dead ends: 64 [2022-04-28 02:02:35,053 INFO L226 Difference]: Without dead ends: 46 [2022-04-28 02:02:35,054 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-04-28 02:02:35,054 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 66 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-28 02:02:35,055 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 63 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-28 02:02:35,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2022-04-28 02:02:35,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 44. [2022-04-28 02:02:35,058 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-28 02:02:35,058 INFO L82 GeneralOperation]: Start isEquivalent. First operand 46 states. Second operand has 44 states, 40 states have (on average 1.625) internal successors, (65), 40 states have internal predecessors, (65), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 02:02:35,058 INFO L74 IsIncluded]: Start isIncluded. First operand 46 states. Second operand has 44 states, 40 states have (on average 1.625) internal successors, (65), 40 states have internal predecessors, (65), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 02:02:35,058 INFO L87 Difference]: Start difference. First operand 46 states. Second operand has 44 states, 40 states have (on average 1.625) internal successors, (65), 40 states have internal predecessors, (65), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 02:02:35,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 02:02:35,059 INFO L93 Difference]: Finished difference Result 46 states and 69 transitions. [2022-04-28 02:02:35,059 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 69 transitions. [2022-04-28 02:02:35,060 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-28 02:02:35,060 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-28 02:02:35,060 INFO L74 IsIncluded]: Start isIncluded. First operand has 44 states, 40 states have (on average 1.625) internal successors, (65), 40 states have internal predecessors, (65), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Second operand 46 states. [2022-04-28 02:02:35,060 INFO L87 Difference]: Start difference. First operand has 44 states, 40 states have (on average 1.625) internal successors, (65), 40 states have internal predecessors, (65), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Second operand 46 states. [2022-04-28 02:02:35,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 02:02:35,061 INFO L93 Difference]: Finished difference Result 46 states and 69 transitions. [2022-04-28 02:02:35,061 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 69 transitions. [2022-04-28 02:02:35,062 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-28 02:02:35,062 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-28 02:02:35,062 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-28 02:02:35,062 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-28 02:02:35,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 40 states have (on average 1.625) internal successors, (65), 40 states have internal predecessors, (65), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 02:02:35,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 68 transitions. [2022-04-28 02:02:35,063 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 68 transitions. Word has length 17 [2022-04-28 02:02:35,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-28 02:02:35,063 INFO L495 AbstractCegarLoop]: Abstraction has 44 states and 68 transitions. [2022-04-28 02:02:35,063 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 02:02:35,063 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 68 transitions. [2022-04-28 02:02:35,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-04-28 02:02:35,064 INFO L187 NwaCegarLoop]: Found error trace [2022-04-28 02:02:35,064 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-28 02:02:35,064 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-04-28 02:02:35,064 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-28 02:02:35,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-28 02:02:35,064 INFO L85 PathProgramCache]: Analyzing trace with hash -647712552, now seen corresponding path program 1 times [2022-04-28 02:02:35,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-28 02:02:35,065 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850827020] [2022-04-28 02:02:35,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-28 02:02:35,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-28 02:02:35,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-28 02:02:35,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-28 02:02:35,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-28 02:02:35,095 INFO L290 TraceCheckUtils]: 0: Hoare triple {699#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} [120] ULTIMATE.initENTRY-->ULTIMATE.initFINAL: Formula: (let ((.cse0 (select |v_#memory_int_1| 1))) (and (= (select |v_#length_1| 2) 15) (= 48 (select .cse0 0)) (= (select |v_#valid_1| 2) 1) (= (select |v_#valid_1| 0) 0) (< 0 |v_#StackHeapBarrier_1|) (= |v_#NULL.base_1| 0) (= 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] {693#true} is VALID [2022-04-28 02:02:35,095 INFO L290 TraceCheckUtils]: 1: Hoare triple {693#true} [123] ULTIMATE.initFINAL-->ULTIMATE.initEXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {693#true} is VALID [2022-04-28 02:02:35,096 INFO L284 TraceCheckUtils]: 2: Hoare quadruple {693#true} {693#true} [163] ULTIMATE.initEXIT-->L-1: AOR: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] LVA: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {693#true} is VALID [2022-04-28 02:02:35,096 INFO L272 TraceCheckUtils]: 0: Hoare triple {693#true} [118] ULTIMATE.startENTRY-->ULTIMATE.initENTRY: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {699#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} is VALID [2022-04-28 02:02:35,096 INFO L290 TraceCheckUtils]: 1: Hoare triple {699#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} [120] ULTIMATE.initENTRY-->ULTIMATE.initFINAL: Formula: (let ((.cse0 (select |v_#memory_int_1| 1))) (and (= (select |v_#length_1| 2) 15) (= 48 (select .cse0 0)) (= (select |v_#valid_1| 2) 1) (= (select |v_#valid_1| 0) 0) (< 0 |v_#StackHeapBarrier_1|) (= |v_#NULL.base_1| 0) (= 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] {693#true} is VALID [2022-04-28 02:02:35,096 INFO L290 TraceCheckUtils]: 2: Hoare triple {693#true} [123] ULTIMATE.initFINAL-->ULTIMATE.initEXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {693#true} is VALID [2022-04-28 02:02:35,096 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {693#true} {693#true} [163] ULTIMATE.initEXIT-->L-1: AOR: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] LVA: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {693#true} is VALID [2022-04-28 02:02:35,097 INFO L272 TraceCheckUtils]: 4: Hoare triple {693#true} [119] L-1-->mainENTRY: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {693#true} is VALID [2022-04-28 02:02:35,097 INFO L290 TraceCheckUtils]: 5: Hoare triple {693#true} [122] mainENTRY-->L85-1: Formula: (and (= v_main_~p4~0_1 |v_main_#t~nondet7_2|) (<= |v_main_#t~nondet8_2| 2147483647) (<= |v_main_#t~nondet5_2| 2147483647) (<= 0 (+ |v_main_#t~nondet8_2| 2147483648)) (<= |v_main_#t~nondet6_2| 2147483647) (= v_main_~p1~0_1 |v_main_#t~nondet4_2|) (= v_main_~p2~0_2 |v_main_#t~nondet5_2|) (= v_main_~p5~0_1 |v_main_#t~nondet8_2|) (<= 0 (+ |v_main_#t~nondet4_2| 2147483648)) (<= 0 (+ |v_main_#t~nondet7_2| 2147483648)) (= v_main_~p3~0_1 |v_main_#t~nondet6_2|) (<= |v_main_#t~nondet4_2| 2147483647) (<= 0 (+ |v_main_#t~nondet6_2| 2147483648)) (<= 0 (+ |v_main_#t~nondet5_2| 2147483648)) (<= |v_main_#t~nondet7_2| 2147483647)) InVars {main_#t~nondet5=|v_main_#t~nondet5_2|, main_#t~nondet4=|v_main_#t~nondet4_2|, main_#t~nondet7=|v_main_#t~nondet7_2|, main_#t~nondet6=|v_main_#t~nondet6_2|, main_#t~nondet8=|v_main_#t~nondet8_2|} OutVars{main_~p5~0=v_main_~p5~0_1, main_~lk2~0=v_main_~lk2~0_4, main_~lk3~0=v_main_~lk3~0_1, main_~p1~0=v_main_~p1~0_1, main_~lk1~0=v_main_~lk1~0_1, main_~lk5~0=v_main_~lk5~0_1, main_~lk4~0=v_main_~lk4~0_1, main_~p3~0=v_main_~p3~0_1, main_~p2~0=v_main_~p2~0_2, main_~p4~0=v_main_~p4~0_1, main_~cond~0=v_main_~cond~0_1} AuxVars[] AssignedVars[main_#t~nondet5, main_#t~nondet4, main_#t~nondet7, main_~lk3~0, main_#t~nondet6, main_~p1~0, main_~lk1~0, main_~lk5~0, main_~p2~0, main_~p4~0, main_#t~nondet8, main_~cond~0, main_~p5~0, main_~lk2~0, main_~lk4~0, main_~p3~0] {693#true} is VALID [2022-04-28 02:02:35,097 INFO L290 TraceCheckUtils]: 6: Hoare triple {693#true} [126] L85-1-->L28: Formula: (and (= |v_main_#t~nondet9_2| v_main_~cond~0_2) (<= 0 (+ |v_main_#t~nondet9_2| 2147483648)) (<= |v_main_#t~nondet9_2| 2147483647)) InVars {main_#t~nondet9=|v_main_#t~nondet9_2|} OutVars{main_~cond~0=v_main_~cond~0_2} AuxVars[] AssignedVars[main_#t~nondet9, main_~cond~0] {693#true} is VALID [2022-04-28 02:02:35,097 INFO L290 TraceCheckUtils]: 7: Hoare triple {693#true} [129] L28-->L43: Formula: (and (= v_main_~lk4~0_2 0) (= v_main_~lk1~0_2 0) (= v_main_~lk3~0_5 0) (= v_main_~lk2~0_5 0) (not (= 0 v_main_~cond~0_4)) (= v_main_~lk5~0_2 0)) InVars {main_~cond~0=v_main_~cond~0_4} OutVars{main_~lk2~0=v_main_~lk2~0_5, main_~lk3~0=v_main_~lk3~0_5, main_~lk1~0=v_main_~lk1~0_2, main_~lk5~0=v_main_~lk5~0_2, main_~lk4~0=v_main_~lk4~0_2, main_~cond~0=v_main_~cond~0_4} AuxVars[] AssignedVars[main_~lk2~0, main_~lk3~0, main_~lk1~0, main_~lk5~0, main_~lk4~0] {693#true} is VALID [2022-04-28 02:02:35,097 INFO L290 TraceCheckUtils]: 8: Hoare triple {693#true} [132] L43-->L43-2: Formula: (= v_main_~p1~0_3 0) InVars {main_~p1~0=v_main_~p1~0_3} OutVars{main_~p1~0=v_main_~p1~0_3} AuxVars[] AssignedVars[] {693#true} is VALID [2022-04-28 02:02:35,098 INFO L290 TraceCheckUtils]: 9: Hoare triple {693#true} [133] L43-2-->L47-1: Formula: (and (= v_main_~lk2~0_6 1) (not (= v_main_~p2~0_4 0))) InVars {main_~p2~0=v_main_~p2~0_4} OutVars{main_~lk2~0=v_main_~lk2~0_6, main_~p2~0=v_main_~p2~0_4} AuxVars[] AssignedVars[main_~lk2~0] {698#(= main_~lk2~0 1)} is VALID [2022-04-28 02:02:35,098 INFO L290 TraceCheckUtils]: 10: Hoare triple {698#(= main_~lk2~0 1)} [135] L47-1-->L51-1: Formula: (and (= v_main_~lk3~0_6 1) (not (= v_main_~p3~0_4 0))) InVars {main_~p3~0=v_main_~p3~0_4} OutVars{main_~p3~0=v_main_~p3~0_4, main_~lk3~0=v_main_~lk3~0_6} AuxVars[] AssignedVars[main_~lk3~0] {698#(= main_~lk2~0 1)} is VALID [2022-04-28 02:02:35,098 INFO L290 TraceCheckUtils]: 11: Hoare triple {698#(= main_~lk2~0 1)} [137] L51-1-->L55-1: Formula: (and (not (= v_main_~p4~0_4 0)) (= v_main_~lk4~0_6 1)) InVars {main_~p4~0=v_main_~p4~0_4} OutVars{main_~p4~0=v_main_~p4~0_4, main_~lk4~0=v_main_~lk4~0_6} AuxVars[] AssignedVars[main_~lk4~0] {698#(= main_~lk2~0 1)} is VALID [2022-04-28 02:02:35,098 INFO L290 TraceCheckUtils]: 12: Hoare triple {698#(= main_~lk2~0 1)} [139] L55-1-->L59-1: Formula: (and (= v_main_~lk5~0_6 1) (not (= v_main_~p5~0_4 0))) InVars {main_~p5~0=v_main_~p5~0_4} OutVars{main_~p5~0=v_main_~p5~0_4, main_~lk5~0=v_main_~lk5~0_6} AuxVars[] AssignedVars[main_~lk5~0] {698#(= main_~lk2~0 1)} is VALID [2022-04-28 02:02:35,099 INFO L290 TraceCheckUtils]: 13: Hoare triple {698#(= main_~lk2~0 1)} [142] L59-1-->L65-1: Formula: (= v_main_~p1~0_5 0) InVars {main_~p1~0=v_main_~p1~0_5} OutVars{main_~p1~0=v_main_~p1~0_5} AuxVars[] AssignedVars[] {698#(= main_~lk2~0 1)} is VALID [2022-04-28 02:02:35,099 INFO L290 TraceCheckUtils]: 14: Hoare triple {698#(= main_~lk2~0 1)} [145] L65-1-->L71: Formula: (not (= v_main_~p2~0_1 0)) InVars {main_~p2~0=v_main_~p2~0_1} OutVars{main_~p2~0=v_main_~p2~0_1} AuxVars[] AssignedVars[] {698#(= main_~lk2~0 1)} is VALID [2022-04-28 02:02:35,099 INFO L290 TraceCheckUtils]: 15: Hoare triple {698#(= main_~lk2~0 1)} [149] L71-->L86-1: Formula: (not (= v_main_~lk2~0_1 1)) InVars {main_~lk2~0=v_main_~lk2~0_1} OutVars{main_~lk2~0=v_main_~lk2~0_1} AuxVars[] AssignedVars[] {694#false} is VALID [2022-04-28 02:02:35,100 INFO L290 TraceCheckUtils]: 16: Hoare triple {694#false} [147] L86-1-->mainErr0ASSERT_VIOLATIONERROR_FUNCTION: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {694#false} is VALID [2022-04-28 02:02:35,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-28 02:02:35,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-28 02:02:35,100 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1850827020] [2022-04-28 02:02:35,100 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1850827020] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-28 02:02:35,100 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-28 02:02:35,100 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-04-28 02:02:35,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785120274] [2022-04-28 02:02:35,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-28 02:02:35,101 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2022-04-28 02:02:35,101 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-28 02:02:35,101 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 02:02:35,110 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 17 edges. 17 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-28 02:02:35,110 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-04-28 02:02:35,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-28 02:02:35,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-04-28 02:02:35,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-04-28 02:02:35,111 INFO L87 Difference]: Start difference. First operand 44 states and 68 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 02:02:35,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 02:02:35,192 INFO L93 Difference]: Finished difference Result 77 states and 121 transitions. [2022-04-28 02:02:35,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-04-28 02:02:35,193 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2022-04-28 02:02:35,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-28 02:02:35,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 02:02:35,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 67 transitions. [2022-04-28 02:02:35,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 02:02:35,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 67 transitions. [2022-04-28 02:02:35,195 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 4 states and 67 transitions. [2022-04-28 02:02:35,254 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 67 edges. 67 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-28 02:02:35,255 INFO L225 Difference]: With dead ends: 77 [2022-04-28 02:02:35,255 INFO L226 Difference]: Without dead ends: 75 [2022-04-28 02:02:35,256 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-04-28 02:02:35,256 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 76 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-28 02:02:35,257 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 47 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-28 02:02:35,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2022-04-28 02:02:35,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 57. [2022-04-28 02:02:35,260 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-28 02:02:35,260 INFO L82 GeneralOperation]: Start isEquivalent. First operand 75 states. Second operand has 57 states, 53 states have (on average 1.6226415094339623) internal successors, (86), 53 states have internal predecessors, (86), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 02:02:35,260 INFO L74 IsIncluded]: Start isIncluded. First operand 75 states. Second operand has 57 states, 53 states have (on average 1.6226415094339623) internal successors, (86), 53 states have internal predecessors, (86), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 02:02:35,261 INFO L87 Difference]: Start difference. First operand 75 states. Second operand has 57 states, 53 states have (on average 1.6226415094339623) internal successors, (86), 53 states have internal predecessors, (86), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 02:02:35,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 02:02:35,262 INFO L93 Difference]: Finished difference Result 75 states and 118 transitions. [2022-04-28 02:02:35,262 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 118 transitions. [2022-04-28 02:02:35,263 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-28 02:02:35,263 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-28 02:02:35,263 INFO L74 IsIncluded]: Start isIncluded. First operand has 57 states, 53 states have (on average 1.6226415094339623) internal successors, (86), 53 states have internal predecessors, (86), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Second operand 75 states. [2022-04-28 02:02:35,263 INFO L87 Difference]: Start difference. First operand has 57 states, 53 states have (on average 1.6226415094339623) internal successors, (86), 53 states have internal predecessors, (86), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Second operand 75 states. [2022-04-28 02:02:35,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 02:02:35,265 INFO L93 Difference]: Finished difference Result 75 states and 118 transitions. [2022-04-28 02:02:35,265 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 118 transitions. [2022-04-28 02:02:35,265 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-28 02:02:35,265 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-28 02:02:35,265 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-28 02:02:35,265 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-28 02:02:35,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 53 states have (on average 1.6226415094339623) internal successors, (86), 53 states have internal predecessors, (86), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 02:02:35,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 89 transitions. [2022-04-28 02:02:35,267 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 89 transitions. Word has length 17 [2022-04-28 02:02:35,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-28 02:02:35,267 INFO L495 AbstractCegarLoop]: Abstraction has 57 states and 89 transitions. [2022-04-28 02:02:35,267 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 02:02:35,267 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 89 transitions. [2022-04-28 02:02:35,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-04-28 02:02:35,268 INFO L187 NwaCegarLoop]: Found error trace [2022-04-28 02:02:35,268 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-28 02:02:35,268 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-04-28 02:02:35,268 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-28 02:02:35,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-28 02:02:35,268 INFO L85 PathProgramCache]: Analyzing trace with hash 1095097783, now seen corresponding path program 1 times [2022-04-28 02:02:35,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-28 02:02:35,268 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [214575622] [2022-04-28 02:02:35,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-28 02:02:35,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-28 02:02:35,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-28 02:02:35,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-28 02:02:35,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-28 02:02:35,297 INFO L290 TraceCheckUtils]: 0: Hoare triple {1015#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} [120] ULTIMATE.initENTRY-->ULTIMATE.initFINAL: Formula: (let ((.cse0 (select |v_#memory_int_1| 1))) (and (= (select |v_#length_1| 2) 15) (= 48 (select .cse0 0)) (= (select |v_#valid_1| 2) 1) (= (select |v_#valid_1| 0) 0) (< 0 |v_#StackHeapBarrier_1|) (= |v_#NULL.base_1| 0) (= 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] {1009#true} is VALID [2022-04-28 02:02:35,297 INFO L290 TraceCheckUtils]: 1: Hoare triple {1009#true} [123] ULTIMATE.initFINAL-->ULTIMATE.initEXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {1009#true} is VALID [2022-04-28 02:02:35,297 INFO L284 TraceCheckUtils]: 2: Hoare quadruple {1009#true} {1009#true} [163] ULTIMATE.initEXIT-->L-1: AOR: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] LVA: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {1009#true} is VALID [2022-04-28 02:02:35,298 INFO L272 TraceCheckUtils]: 0: Hoare triple {1009#true} [118] ULTIMATE.startENTRY-->ULTIMATE.initENTRY: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {1015#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} is VALID [2022-04-28 02:02:35,298 INFO L290 TraceCheckUtils]: 1: Hoare triple {1015#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} [120] ULTIMATE.initENTRY-->ULTIMATE.initFINAL: Formula: (let ((.cse0 (select |v_#memory_int_1| 1))) (and (= (select |v_#length_1| 2) 15) (= 48 (select .cse0 0)) (= (select |v_#valid_1| 2) 1) (= (select |v_#valid_1| 0) 0) (< 0 |v_#StackHeapBarrier_1|) (= |v_#NULL.base_1| 0) (= 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] {1009#true} is VALID [2022-04-28 02:02:35,298 INFO L290 TraceCheckUtils]: 2: Hoare triple {1009#true} [123] ULTIMATE.initFINAL-->ULTIMATE.initEXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {1009#true} is VALID [2022-04-28 02:02:35,298 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {1009#true} {1009#true} [163] ULTIMATE.initEXIT-->L-1: AOR: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] LVA: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {1009#true} is VALID [2022-04-28 02:02:35,298 INFO L272 TraceCheckUtils]: 4: Hoare triple {1009#true} [119] L-1-->mainENTRY: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {1009#true} is VALID [2022-04-28 02:02:35,299 INFO L290 TraceCheckUtils]: 5: Hoare triple {1009#true} [122] mainENTRY-->L85-1: Formula: (and (= v_main_~p4~0_1 |v_main_#t~nondet7_2|) (<= |v_main_#t~nondet8_2| 2147483647) (<= |v_main_#t~nondet5_2| 2147483647) (<= 0 (+ |v_main_#t~nondet8_2| 2147483648)) (<= |v_main_#t~nondet6_2| 2147483647) (= v_main_~p1~0_1 |v_main_#t~nondet4_2|) (= v_main_~p2~0_2 |v_main_#t~nondet5_2|) (= v_main_~p5~0_1 |v_main_#t~nondet8_2|) (<= 0 (+ |v_main_#t~nondet4_2| 2147483648)) (<= 0 (+ |v_main_#t~nondet7_2| 2147483648)) (= v_main_~p3~0_1 |v_main_#t~nondet6_2|) (<= |v_main_#t~nondet4_2| 2147483647) (<= 0 (+ |v_main_#t~nondet6_2| 2147483648)) (<= 0 (+ |v_main_#t~nondet5_2| 2147483648)) (<= |v_main_#t~nondet7_2| 2147483647)) InVars {main_#t~nondet5=|v_main_#t~nondet5_2|, main_#t~nondet4=|v_main_#t~nondet4_2|, main_#t~nondet7=|v_main_#t~nondet7_2|, main_#t~nondet6=|v_main_#t~nondet6_2|, main_#t~nondet8=|v_main_#t~nondet8_2|} OutVars{main_~p5~0=v_main_~p5~0_1, main_~lk2~0=v_main_~lk2~0_4, main_~lk3~0=v_main_~lk3~0_1, main_~p1~0=v_main_~p1~0_1, main_~lk1~0=v_main_~lk1~0_1, main_~lk5~0=v_main_~lk5~0_1, main_~lk4~0=v_main_~lk4~0_1, main_~p3~0=v_main_~p3~0_1, main_~p2~0=v_main_~p2~0_2, main_~p4~0=v_main_~p4~0_1, main_~cond~0=v_main_~cond~0_1} AuxVars[] AssignedVars[main_#t~nondet5, main_#t~nondet4, main_#t~nondet7, main_~lk3~0, main_#t~nondet6, main_~p1~0, main_~lk1~0, main_~lk5~0, main_~p2~0, main_~p4~0, main_#t~nondet8, main_~cond~0, main_~p5~0, main_~lk2~0, main_~lk4~0, main_~p3~0] {1009#true} is VALID [2022-04-28 02:02:35,299 INFO L290 TraceCheckUtils]: 6: Hoare triple {1009#true} [126] L85-1-->L28: Formula: (and (= |v_main_#t~nondet9_2| v_main_~cond~0_2) (<= 0 (+ |v_main_#t~nondet9_2| 2147483648)) (<= |v_main_#t~nondet9_2| 2147483647)) InVars {main_#t~nondet9=|v_main_#t~nondet9_2|} OutVars{main_~cond~0=v_main_~cond~0_2} AuxVars[] AssignedVars[main_#t~nondet9, main_~cond~0] {1009#true} is VALID [2022-04-28 02:02:35,299 INFO L290 TraceCheckUtils]: 7: Hoare triple {1009#true} [129] L28-->L43: Formula: (and (= v_main_~lk4~0_2 0) (= v_main_~lk1~0_2 0) (= v_main_~lk3~0_5 0) (= v_main_~lk2~0_5 0) (not (= 0 v_main_~cond~0_4)) (= v_main_~lk5~0_2 0)) InVars {main_~cond~0=v_main_~cond~0_4} OutVars{main_~lk2~0=v_main_~lk2~0_5, main_~lk3~0=v_main_~lk3~0_5, main_~lk1~0=v_main_~lk1~0_2, main_~lk5~0=v_main_~lk5~0_2, main_~lk4~0=v_main_~lk4~0_2, main_~cond~0=v_main_~cond~0_4} AuxVars[] AssignedVars[main_~lk2~0, main_~lk3~0, main_~lk1~0, main_~lk5~0, main_~lk4~0] {1009#true} is VALID [2022-04-28 02:02:35,299 INFO L290 TraceCheckUtils]: 8: Hoare triple {1009#true} [132] L43-->L43-2: Formula: (= v_main_~p1~0_3 0) InVars {main_~p1~0=v_main_~p1~0_3} OutVars{main_~p1~0=v_main_~p1~0_3} AuxVars[] AssignedVars[] {1009#true} is VALID [2022-04-28 02:02:35,299 INFO L290 TraceCheckUtils]: 9: Hoare triple {1009#true} [134] L43-2-->L47-1: Formula: (= v_main_~p2~0_5 0) InVars {main_~p2~0=v_main_~p2~0_5} OutVars{main_~p2~0=v_main_~p2~0_5} AuxVars[] AssignedVars[] {1014#(= main_~p2~0 0)} is VALID [2022-04-28 02:02:35,304 INFO L290 TraceCheckUtils]: 10: Hoare triple {1014#(= main_~p2~0 0)} [135] L47-1-->L51-1: Formula: (and (= v_main_~lk3~0_6 1) (not (= v_main_~p3~0_4 0))) InVars {main_~p3~0=v_main_~p3~0_4} OutVars{main_~p3~0=v_main_~p3~0_4, main_~lk3~0=v_main_~lk3~0_6} AuxVars[] AssignedVars[main_~lk3~0] {1014#(= main_~p2~0 0)} is VALID [2022-04-28 02:02:35,304 INFO L290 TraceCheckUtils]: 11: Hoare triple {1014#(= main_~p2~0 0)} [137] L51-1-->L55-1: Formula: (and (not (= v_main_~p4~0_4 0)) (= v_main_~lk4~0_6 1)) InVars {main_~p4~0=v_main_~p4~0_4} OutVars{main_~p4~0=v_main_~p4~0_4, main_~lk4~0=v_main_~lk4~0_6} AuxVars[] AssignedVars[main_~lk4~0] {1014#(= main_~p2~0 0)} is VALID [2022-04-28 02:02:35,305 INFO L290 TraceCheckUtils]: 12: Hoare triple {1014#(= main_~p2~0 0)} [139] L55-1-->L59-1: Formula: (and (= v_main_~lk5~0_6 1) (not (= v_main_~p5~0_4 0))) InVars {main_~p5~0=v_main_~p5~0_4} OutVars{main_~p5~0=v_main_~p5~0_4, main_~lk5~0=v_main_~lk5~0_6} AuxVars[] AssignedVars[main_~lk5~0] {1014#(= main_~p2~0 0)} is VALID [2022-04-28 02:02:35,305 INFO L290 TraceCheckUtils]: 13: Hoare triple {1014#(= main_~p2~0 0)} [142] L59-1-->L65-1: Formula: (= v_main_~p1~0_5 0) InVars {main_~p1~0=v_main_~p1~0_5} OutVars{main_~p1~0=v_main_~p1~0_5} AuxVars[] AssignedVars[] {1014#(= main_~p2~0 0)} is VALID [2022-04-28 02:02:35,306 INFO L290 TraceCheckUtils]: 14: Hoare triple {1014#(= main_~p2~0 0)} [145] L65-1-->L71: Formula: (not (= v_main_~p2~0_1 0)) InVars {main_~p2~0=v_main_~p2~0_1} OutVars{main_~p2~0=v_main_~p2~0_1} AuxVars[] AssignedVars[] {1010#false} is VALID [2022-04-28 02:02:35,306 INFO L290 TraceCheckUtils]: 15: Hoare triple {1010#false} [149] L71-->L86-1: Formula: (not (= v_main_~lk2~0_1 1)) InVars {main_~lk2~0=v_main_~lk2~0_1} OutVars{main_~lk2~0=v_main_~lk2~0_1} AuxVars[] AssignedVars[] {1010#false} is VALID [2022-04-28 02:02:35,306 INFO L290 TraceCheckUtils]: 16: Hoare triple {1010#false} [147] L86-1-->mainErr0ASSERT_VIOLATIONERROR_FUNCTION: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {1010#false} is VALID [2022-04-28 02:02:35,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-28 02:02:35,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-28 02:02:35,307 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [214575622] [2022-04-28 02:02:35,307 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [214575622] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-28 02:02:35,307 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-28 02:02:35,307 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-04-28 02:02:35,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553669099] [2022-04-28 02:02:35,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-28 02:02:35,307 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2022-04-28 02:02:35,308 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-28 02:02:35,308 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 02:02:35,320 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 17 edges. 17 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-28 02:02:35,320 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-04-28 02:02:35,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-28 02:02:35,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-04-28 02:02:35,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-04-28 02:02:35,320 INFO L87 Difference]: Start difference. First operand 57 states and 89 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 02:02:35,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 02:02:35,396 INFO L93 Difference]: Finished difference Result 125 states and 199 transitions. [2022-04-28 02:02:35,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-04-28 02:02:35,396 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2022-04-28 02:02:35,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-28 02:02:35,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 02:02:35,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 99 transitions. [2022-04-28 02:02:35,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 02:02:35,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 99 transitions. [2022-04-28 02:02:35,398 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 4 states and 99 transitions. [2022-04-28 02:02:35,454 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 99 edges. 99 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-28 02:02:35,455 INFO L225 Difference]: With dead ends: 125 [2022-04-28 02:02:35,455 INFO L226 Difference]: Without dead ends: 77 [2022-04-28 02:02:35,456 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-04-28 02:02:35,456 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 67 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-28 02:02:35,456 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 57 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-28 02:02:35,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2022-04-28 02:02:35,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 75. [2022-04-28 02:02:35,460 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-28 02:02:35,460 INFO L82 GeneralOperation]: Start isEquivalent. First operand 77 states. Second operand has 75 states, 71 states have (on average 1.5774647887323943) internal successors, (112), 71 states have internal predecessors, (112), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 02:02:35,461 INFO L74 IsIncluded]: Start isIncluded. First operand 77 states. Second operand has 75 states, 71 states have (on average 1.5774647887323943) internal successors, (112), 71 states have internal predecessors, (112), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 02:02:35,461 INFO L87 Difference]: Start difference. First operand 77 states. Second operand has 75 states, 71 states have (on average 1.5774647887323943) internal successors, (112), 71 states have internal predecessors, (112), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 02:02:35,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 02:02:35,462 INFO L93 Difference]: Finished difference Result 77 states and 116 transitions. [2022-04-28 02:02:35,462 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 116 transitions. [2022-04-28 02:02:35,463 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-28 02:02:35,463 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-28 02:02:35,463 INFO L74 IsIncluded]: Start isIncluded. First operand has 75 states, 71 states have (on average 1.5774647887323943) internal successors, (112), 71 states have internal predecessors, (112), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Second operand 77 states. [2022-04-28 02:02:35,463 INFO L87 Difference]: Start difference. First operand has 75 states, 71 states have (on average 1.5774647887323943) internal successors, (112), 71 states have internal predecessors, (112), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Second operand 77 states. [2022-04-28 02:02:35,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 02:02:35,465 INFO L93 Difference]: Finished difference Result 77 states and 116 transitions. [2022-04-28 02:02:35,465 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 116 transitions. [2022-04-28 02:02:35,465 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-28 02:02:35,465 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-28 02:02:35,465 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-28 02:02:35,465 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-28 02:02:35,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 71 states have (on average 1.5774647887323943) internal successors, (112), 71 states have internal predecessors, (112), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 02:02:35,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 115 transitions. [2022-04-28 02:02:35,467 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 115 transitions. Word has length 17 [2022-04-28 02:02:35,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-28 02:02:35,467 INFO L495 AbstractCegarLoop]: Abstraction has 75 states and 115 transitions. [2022-04-28 02:02:35,467 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 02:02:35,467 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 115 transitions. [2022-04-28 02:02:35,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-04-28 02:02:35,468 INFO L187 NwaCegarLoop]: Found error trace [2022-04-28 02:02:35,468 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-28 02:02:35,468 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-04-28 02:02:35,468 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-28 02:02:35,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-28 02:02:35,468 INFO L85 PathProgramCache]: Analyzing trace with hash 1395779414, now seen corresponding path program 1 times [2022-04-28 02:02:35,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-28 02:02:35,468 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824074224] [2022-04-28 02:02:35,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-28 02:02:35,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-28 02:02:35,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-28 02:02:35,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-28 02:02:35,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-28 02:02:35,500 INFO L290 TraceCheckUtils]: 0: Hoare triple {1405#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} [120] ULTIMATE.initENTRY-->ULTIMATE.initFINAL: Formula: (let ((.cse0 (select |v_#memory_int_1| 1))) (and (= (select |v_#length_1| 2) 15) (= 48 (select .cse0 0)) (= (select |v_#valid_1| 2) 1) (= (select |v_#valid_1| 0) 0) (< 0 |v_#StackHeapBarrier_1|) (= |v_#NULL.base_1| 0) (= 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] {1399#true} is VALID [2022-04-28 02:02:35,500 INFO L290 TraceCheckUtils]: 1: Hoare triple {1399#true} [123] ULTIMATE.initFINAL-->ULTIMATE.initEXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {1399#true} is VALID [2022-04-28 02:02:35,501 INFO L284 TraceCheckUtils]: 2: Hoare quadruple {1399#true} {1399#true} [163] ULTIMATE.initEXIT-->L-1: AOR: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] LVA: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {1399#true} is VALID [2022-04-28 02:02:35,501 INFO L272 TraceCheckUtils]: 0: Hoare triple {1399#true} [118] ULTIMATE.startENTRY-->ULTIMATE.initENTRY: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {1405#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} is VALID [2022-04-28 02:02:35,501 INFO L290 TraceCheckUtils]: 1: Hoare triple {1405#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} [120] ULTIMATE.initENTRY-->ULTIMATE.initFINAL: Formula: (let ((.cse0 (select |v_#memory_int_1| 1))) (and (= (select |v_#length_1| 2) 15) (= 48 (select .cse0 0)) (= (select |v_#valid_1| 2) 1) (= (select |v_#valid_1| 0) 0) (< 0 |v_#StackHeapBarrier_1|) (= |v_#NULL.base_1| 0) (= 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] {1399#true} is VALID [2022-04-28 02:02:35,501 INFO L290 TraceCheckUtils]: 2: Hoare triple {1399#true} [123] ULTIMATE.initFINAL-->ULTIMATE.initEXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {1399#true} is VALID [2022-04-28 02:02:35,501 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {1399#true} {1399#true} [163] ULTIMATE.initEXIT-->L-1: AOR: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] LVA: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {1399#true} is VALID [2022-04-28 02:02:35,502 INFO L272 TraceCheckUtils]: 4: Hoare triple {1399#true} [119] L-1-->mainENTRY: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {1399#true} is VALID [2022-04-28 02:02:35,502 INFO L290 TraceCheckUtils]: 5: Hoare triple {1399#true} [122] mainENTRY-->L85-1: Formula: (and (= v_main_~p4~0_1 |v_main_#t~nondet7_2|) (<= |v_main_#t~nondet8_2| 2147483647) (<= |v_main_#t~nondet5_2| 2147483647) (<= 0 (+ |v_main_#t~nondet8_2| 2147483648)) (<= |v_main_#t~nondet6_2| 2147483647) (= v_main_~p1~0_1 |v_main_#t~nondet4_2|) (= v_main_~p2~0_2 |v_main_#t~nondet5_2|) (= v_main_~p5~0_1 |v_main_#t~nondet8_2|) (<= 0 (+ |v_main_#t~nondet4_2| 2147483648)) (<= 0 (+ |v_main_#t~nondet7_2| 2147483648)) (= v_main_~p3~0_1 |v_main_#t~nondet6_2|) (<= |v_main_#t~nondet4_2| 2147483647) (<= 0 (+ |v_main_#t~nondet6_2| 2147483648)) (<= 0 (+ |v_main_#t~nondet5_2| 2147483648)) (<= |v_main_#t~nondet7_2| 2147483647)) InVars {main_#t~nondet5=|v_main_#t~nondet5_2|, main_#t~nondet4=|v_main_#t~nondet4_2|, main_#t~nondet7=|v_main_#t~nondet7_2|, main_#t~nondet6=|v_main_#t~nondet6_2|, main_#t~nondet8=|v_main_#t~nondet8_2|} OutVars{main_~p5~0=v_main_~p5~0_1, main_~lk2~0=v_main_~lk2~0_4, main_~lk3~0=v_main_~lk3~0_1, main_~p1~0=v_main_~p1~0_1, main_~lk1~0=v_main_~lk1~0_1, main_~lk5~0=v_main_~lk5~0_1, main_~lk4~0=v_main_~lk4~0_1, main_~p3~0=v_main_~p3~0_1, main_~p2~0=v_main_~p2~0_2, main_~p4~0=v_main_~p4~0_1, main_~cond~0=v_main_~cond~0_1} AuxVars[] AssignedVars[main_#t~nondet5, main_#t~nondet4, main_#t~nondet7, main_~lk3~0, main_#t~nondet6, main_~p1~0, main_~lk1~0, main_~lk5~0, main_~p2~0, main_~p4~0, main_#t~nondet8, main_~cond~0, main_~p5~0, main_~lk2~0, main_~lk4~0, main_~p3~0] {1399#true} is VALID [2022-04-28 02:02:35,502 INFO L290 TraceCheckUtils]: 6: Hoare triple {1399#true} [126] L85-1-->L28: Formula: (and (= |v_main_#t~nondet9_2| v_main_~cond~0_2) (<= 0 (+ |v_main_#t~nondet9_2| 2147483648)) (<= |v_main_#t~nondet9_2| 2147483647)) InVars {main_#t~nondet9=|v_main_#t~nondet9_2|} OutVars{main_~cond~0=v_main_~cond~0_2} AuxVars[] AssignedVars[main_#t~nondet9, main_~cond~0] {1399#true} is VALID [2022-04-28 02:02:35,502 INFO L290 TraceCheckUtils]: 7: Hoare triple {1399#true} [129] L28-->L43: Formula: (and (= v_main_~lk4~0_2 0) (= v_main_~lk1~0_2 0) (= v_main_~lk3~0_5 0) (= v_main_~lk2~0_5 0) (not (= 0 v_main_~cond~0_4)) (= v_main_~lk5~0_2 0)) InVars {main_~cond~0=v_main_~cond~0_4} OutVars{main_~lk2~0=v_main_~lk2~0_5, main_~lk3~0=v_main_~lk3~0_5, main_~lk1~0=v_main_~lk1~0_2, main_~lk5~0=v_main_~lk5~0_2, main_~lk4~0=v_main_~lk4~0_2, main_~cond~0=v_main_~cond~0_4} AuxVars[] AssignedVars[main_~lk2~0, main_~lk3~0, main_~lk1~0, main_~lk5~0, main_~lk4~0] {1399#true} is VALID [2022-04-28 02:02:35,502 INFO L290 TraceCheckUtils]: 8: Hoare triple {1399#true} [132] L43-->L43-2: Formula: (= v_main_~p1~0_3 0) InVars {main_~p1~0=v_main_~p1~0_3} OutVars{main_~p1~0=v_main_~p1~0_3} AuxVars[] AssignedVars[] {1399#true} is VALID [2022-04-28 02:02:35,502 INFO L290 TraceCheckUtils]: 9: Hoare triple {1399#true} [133] L43-2-->L47-1: Formula: (and (= v_main_~lk2~0_6 1) (not (= v_main_~p2~0_4 0))) InVars {main_~p2~0=v_main_~p2~0_4} OutVars{main_~lk2~0=v_main_~lk2~0_6, main_~p2~0=v_main_~p2~0_4} AuxVars[] AssignedVars[main_~lk2~0] {1404#(not (= main_~p2~0 0))} is VALID [2022-04-28 02:02:35,503 INFO L290 TraceCheckUtils]: 10: Hoare triple {1404#(not (= main_~p2~0 0))} [135] L47-1-->L51-1: Formula: (and (= v_main_~lk3~0_6 1) (not (= v_main_~p3~0_4 0))) InVars {main_~p3~0=v_main_~p3~0_4} OutVars{main_~p3~0=v_main_~p3~0_4, main_~lk3~0=v_main_~lk3~0_6} AuxVars[] AssignedVars[main_~lk3~0] {1404#(not (= main_~p2~0 0))} is VALID [2022-04-28 02:02:35,503 INFO L290 TraceCheckUtils]: 11: Hoare triple {1404#(not (= main_~p2~0 0))} [137] L51-1-->L55-1: Formula: (and (not (= v_main_~p4~0_4 0)) (= v_main_~lk4~0_6 1)) InVars {main_~p4~0=v_main_~p4~0_4} OutVars{main_~p4~0=v_main_~p4~0_4, main_~lk4~0=v_main_~lk4~0_6} AuxVars[] AssignedVars[main_~lk4~0] {1404#(not (= main_~p2~0 0))} is VALID [2022-04-28 02:02:35,503 INFO L290 TraceCheckUtils]: 12: Hoare triple {1404#(not (= main_~p2~0 0))} [139] L55-1-->L59-1: Formula: (and (= v_main_~lk5~0_6 1) (not (= v_main_~p5~0_4 0))) InVars {main_~p5~0=v_main_~p5~0_4} OutVars{main_~p5~0=v_main_~p5~0_4, main_~lk5~0=v_main_~lk5~0_6} AuxVars[] AssignedVars[main_~lk5~0] {1404#(not (= main_~p2~0 0))} is VALID [2022-04-28 02:02:35,504 INFO L290 TraceCheckUtils]: 13: Hoare triple {1404#(not (= main_~p2~0 0))} [142] L59-1-->L65-1: Formula: (= v_main_~p1~0_5 0) InVars {main_~p1~0=v_main_~p1~0_5} OutVars{main_~p1~0=v_main_~p1~0_5} AuxVars[] AssignedVars[] {1404#(not (= main_~p2~0 0))} is VALID [2022-04-28 02:02:35,504 INFO L290 TraceCheckUtils]: 14: Hoare triple {1404#(not (= main_~p2~0 0))} [146] L65-1-->L70-1: Formula: (= v_main_~p2~0_3 0) InVars {main_~p2~0=v_main_~p2~0_3} OutVars{main_~p2~0=v_main_~p2~0_3} AuxVars[] AssignedVars[] {1400#false} is VALID [2022-04-28 02:02:35,504 INFO L290 TraceCheckUtils]: 15: Hoare triple {1400#false} [151] L70-1-->L76: Formula: (not (= v_main_~p3~0_2 0)) InVars {main_~p3~0=v_main_~p3~0_2} OutVars{main_~p3~0=v_main_~p3~0_2} AuxVars[] AssignedVars[] {1400#false} is VALID [2022-04-28 02:02:35,504 INFO L290 TraceCheckUtils]: 16: Hoare triple {1400#false} [153] L76-->L86-1: Formula: (not (= v_main_~lk3~0_2 1)) InVars {main_~lk3~0=v_main_~lk3~0_2} OutVars{main_~lk3~0=v_main_~lk3~0_2} AuxVars[] AssignedVars[] {1400#false} is VALID [2022-04-28 02:02:35,505 INFO L290 TraceCheckUtils]: 17: Hoare triple {1400#false} [147] L86-1-->mainErr0ASSERT_VIOLATIONERROR_FUNCTION: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {1400#false} is VALID [2022-04-28 02:02:35,505 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-28 02:02:35,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-28 02:02:35,505 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824074224] [2022-04-28 02:02:35,505 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [824074224] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-28 02:02:35,505 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-28 02:02:35,505 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-04-28 02:02:35,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668797163] [2022-04-28 02:02:35,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-28 02:02:35,506 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 18 [2022-04-28 02:02:35,506 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-28 02:02:35,506 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 02:02:35,515 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 18 edges. 18 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-28 02:02:35,516 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-04-28 02:02:35,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-28 02:02:35,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-04-28 02:02:35,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-04-28 02:02:35,516 INFO L87 Difference]: Start difference. First operand 75 states and 115 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 02:02:35,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 02:02:35,594 INFO L93 Difference]: Finished difference Result 112 states and 170 transitions. [2022-04-28 02:02:35,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-04-28 02:02:35,594 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 18 [2022-04-28 02:02:35,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-28 02:02:35,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 02:02:35,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 94 transitions. [2022-04-28 02:02:35,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 02:02:35,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 94 transitions. [2022-04-28 02:02:35,597 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 4 states and 94 transitions. [2022-04-28 02:02:35,656 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 94 edges. 94 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-28 02:02:35,659 INFO L225 Difference]: With dead ends: 112 [2022-04-28 02:02:35,659 INFO L226 Difference]: Without dead ends: 79 [2022-04-28 02:02:35,660 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-04-28 02:02:35,663 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 65 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-28 02:02:35,664 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 60 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-28 02:02:35,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2022-04-28 02:02:35,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 77. [2022-04-28 02:02:35,672 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-28 02:02:35,672 INFO L82 GeneralOperation]: Start isEquivalent. First operand 79 states. Second operand has 77 states, 73 states have (on average 1.5342465753424657) internal successors, (112), 73 states have internal predecessors, (112), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 02:02:35,672 INFO L74 IsIncluded]: Start isIncluded. First operand 79 states. Second operand has 77 states, 73 states have (on average 1.5342465753424657) internal successors, (112), 73 states have internal predecessors, (112), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 02:02:35,673 INFO L87 Difference]: Start difference. First operand 79 states. Second operand has 77 states, 73 states have (on average 1.5342465753424657) internal successors, (112), 73 states have internal predecessors, (112), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 02:02:35,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 02:02:35,674 INFO L93 Difference]: Finished difference Result 79 states and 116 transitions. [2022-04-28 02:02:35,674 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 116 transitions. [2022-04-28 02:02:35,674 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-28 02:02:35,675 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-28 02:02:35,675 INFO L74 IsIncluded]: Start isIncluded. First operand has 77 states, 73 states have (on average 1.5342465753424657) internal successors, (112), 73 states have internal predecessors, (112), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Second operand 79 states. [2022-04-28 02:02:35,675 INFO L87 Difference]: Start difference. First operand has 77 states, 73 states have (on average 1.5342465753424657) internal successors, (112), 73 states have internal predecessors, (112), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Second operand 79 states. [2022-04-28 02:02:35,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 02:02:35,677 INFO L93 Difference]: Finished difference Result 79 states and 116 transitions. [2022-04-28 02:02:35,677 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 116 transitions. [2022-04-28 02:02:35,677 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-28 02:02:35,677 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-28 02:02:35,677 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-28 02:02:35,677 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-28 02:02:35,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 73 states have (on average 1.5342465753424657) internal successors, (112), 73 states have internal predecessors, (112), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 02:02:35,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 115 transitions. [2022-04-28 02:02:35,679 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 115 transitions. Word has length 18 [2022-04-28 02:02:35,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-28 02:02:35,679 INFO L495 AbstractCegarLoop]: Abstraction has 77 states and 115 transitions. [2022-04-28 02:02:35,679 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 02:02:35,679 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 115 transitions. [2022-04-28 02:02:35,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-04-28 02:02:35,679 INFO L187 NwaCegarLoop]: Found error trace [2022-04-28 02:02:35,679 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-28 02:02:35,679 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-04-28 02:02:35,679 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-28 02:02:35,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-28 02:02:35,680 INFO L85 PathProgramCache]: Analyzing trace with hash -411675049, now seen corresponding path program 1 times [2022-04-28 02:02:35,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-28 02:02:35,680 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1892516248] [2022-04-28 02:02:35,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-28 02:02:35,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-28 02:02:35,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-28 02:02:35,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-28 02:02:35,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-28 02:02:35,705 INFO L290 TraceCheckUtils]: 0: Hoare triple {1788#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} [120] ULTIMATE.initENTRY-->ULTIMATE.initFINAL: Formula: (let ((.cse0 (select |v_#memory_int_1| 1))) (and (= (select |v_#length_1| 2) 15) (= 48 (select .cse0 0)) (= (select |v_#valid_1| 2) 1) (= (select |v_#valid_1| 0) 0) (< 0 |v_#StackHeapBarrier_1|) (= |v_#NULL.base_1| 0) (= 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] {1782#true} is VALID [2022-04-28 02:02:35,705 INFO L290 TraceCheckUtils]: 1: Hoare triple {1782#true} [123] ULTIMATE.initFINAL-->ULTIMATE.initEXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {1782#true} is VALID [2022-04-28 02:02:35,705 INFO L284 TraceCheckUtils]: 2: Hoare quadruple {1782#true} {1782#true} [163] ULTIMATE.initEXIT-->L-1: AOR: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] LVA: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {1782#true} is VALID [2022-04-28 02:02:35,706 INFO L272 TraceCheckUtils]: 0: Hoare triple {1782#true} [118] ULTIMATE.startENTRY-->ULTIMATE.initENTRY: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {1788#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} is VALID [2022-04-28 02:02:35,706 INFO L290 TraceCheckUtils]: 1: Hoare triple {1788#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} [120] ULTIMATE.initENTRY-->ULTIMATE.initFINAL: Formula: (let ((.cse0 (select |v_#memory_int_1| 1))) (and (= (select |v_#length_1| 2) 15) (= 48 (select .cse0 0)) (= (select |v_#valid_1| 2) 1) (= (select |v_#valid_1| 0) 0) (< 0 |v_#StackHeapBarrier_1|) (= |v_#NULL.base_1| 0) (= 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] {1782#true} is VALID [2022-04-28 02:02:35,706 INFO L290 TraceCheckUtils]: 2: Hoare triple {1782#true} [123] ULTIMATE.initFINAL-->ULTIMATE.initEXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {1782#true} is VALID [2022-04-28 02:02:35,706 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {1782#true} {1782#true} [163] ULTIMATE.initEXIT-->L-1: AOR: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] LVA: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {1782#true} is VALID [2022-04-28 02:02:35,706 INFO L272 TraceCheckUtils]: 4: Hoare triple {1782#true} [119] L-1-->mainENTRY: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {1782#true} is VALID [2022-04-28 02:02:35,706 INFO L290 TraceCheckUtils]: 5: Hoare triple {1782#true} [122] mainENTRY-->L85-1: Formula: (and (= v_main_~p4~0_1 |v_main_#t~nondet7_2|) (<= |v_main_#t~nondet8_2| 2147483647) (<= |v_main_#t~nondet5_2| 2147483647) (<= 0 (+ |v_main_#t~nondet8_2| 2147483648)) (<= |v_main_#t~nondet6_2| 2147483647) (= v_main_~p1~0_1 |v_main_#t~nondet4_2|) (= v_main_~p2~0_2 |v_main_#t~nondet5_2|) (= v_main_~p5~0_1 |v_main_#t~nondet8_2|) (<= 0 (+ |v_main_#t~nondet4_2| 2147483648)) (<= 0 (+ |v_main_#t~nondet7_2| 2147483648)) (= v_main_~p3~0_1 |v_main_#t~nondet6_2|) (<= |v_main_#t~nondet4_2| 2147483647) (<= 0 (+ |v_main_#t~nondet6_2| 2147483648)) (<= 0 (+ |v_main_#t~nondet5_2| 2147483648)) (<= |v_main_#t~nondet7_2| 2147483647)) InVars {main_#t~nondet5=|v_main_#t~nondet5_2|, main_#t~nondet4=|v_main_#t~nondet4_2|, main_#t~nondet7=|v_main_#t~nondet7_2|, main_#t~nondet6=|v_main_#t~nondet6_2|, main_#t~nondet8=|v_main_#t~nondet8_2|} OutVars{main_~p5~0=v_main_~p5~0_1, main_~lk2~0=v_main_~lk2~0_4, main_~lk3~0=v_main_~lk3~0_1, main_~p1~0=v_main_~p1~0_1, main_~lk1~0=v_main_~lk1~0_1, main_~lk5~0=v_main_~lk5~0_1, main_~lk4~0=v_main_~lk4~0_1, main_~p3~0=v_main_~p3~0_1, main_~p2~0=v_main_~p2~0_2, main_~p4~0=v_main_~p4~0_1, main_~cond~0=v_main_~cond~0_1} AuxVars[] AssignedVars[main_#t~nondet5, main_#t~nondet4, main_#t~nondet7, main_~lk3~0, main_#t~nondet6, main_~p1~0, main_~lk1~0, main_~lk5~0, main_~p2~0, main_~p4~0, main_#t~nondet8, main_~cond~0, main_~p5~0, main_~lk2~0, main_~lk4~0, main_~p3~0] {1782#true} is VALID [2022-04-28 02:02:35,706 INFO L290 TraceCheckUtils]: 6: Hoare triple {1782#true} [126] L85-1-->L28: Formula: (and (= |v_main_#t~nondet9_2| v_main_~cond~0_2) (<= 0 (+ |v_main_#t~nondet9_2| 2147483648)) (<= |v_main_#t~nondet9_2| 2147483647)) InVars {main_#t~nondet9=|v_main_#t~nondet9_2|} OutVars{main_~cond~0=v_main_~cond~0_2} AuxVars[] AssignedVars[main_#t~nondet9, main_~cond~0] {1782#true} is VALID [2022-04-28 02:02:35,706 INFO L290 TraceCheckUtils]: 7: Hoare triple {1782#true} [129] L28-->L43: Formula: (and (= v_main_~lk4~0_2 0) (= v_main_~lk1~0_2 0) (= v_main_~lk3~0_5 0) (= v_main_~lk2~0_5 0) (not (= 0 v_main_~cond~0_4)) (= v_main_~lk5~0_2 0)) InVars {main_~cond~0=v_main_~cond~0_4} OutVars{main_~lk2~0=v_main_~lk2~0_5, main_~lk3~0=v_main_~lk3~0_5, main_~lk1~0=v_main_~lk1~0_2, main_~lk5~0=v_main_~lk5~0_2, main_~lk4~0=v_main_~lk4~0_2, main_~cond~0=v_main_~cond~0_4} AuxVars[] AssignedVars[main_~lk2~0, main_~lk3~0, main_~lk1~0, main_~lk5~0, main_~lk4~0] {1782#true} is VALID [2022-04-28 02:02:35,707 INFO L290 TraceCheckUtils]: 8: Hoare triple {1782#true} [132] L43-->L43-2: Formula: (= v_main_~p1~0_3 0) InVars {main_~p1~0=v_main_~p1~0_3} OutVars{main_~p1~0=v_main_~p1~0_3} AuxVars[] AssignedVars[] {1782#true} is VALID [2022-04-28 02:02:35,707 INFO L290 TraceCheckUtils]: 9: Hoare triple {1782#true} [134] L43-2-->L47-1: Formula: (= v_main_~p2~0_5 0) InVars {main_~p2~0=v_main_~p2~0_5} OutVars{main_~p2~0=v_main_~p2~0_5} AuxVars[] AssignedVars[] {1782#true} is VALID [2022-04-28 02:02:35,707 INFO L290 TraceCheckUtils]: 10: Hoare triple {1782#true} [135] L47-1-->L51-1: Formula: (and (= v_main_~lk3~0_6 1) (not (= v_main_~p3~0_4 0))) InVars {main_~p3~0=v_main_~p3~0_4} OutVars{main_~p3~0=v_main_~p3~0_4, main_~lk3~0=v_main_~lk3~0_6} AuxVars[] AssignedVars[main_~lk3~0] {1787#(= main_~lk3~0 1)} is VALID [2022-04-28 02:02:35,707 INFO L290 TraceCheckUtils]: 11: Hoare triple {1787#(= main_~lk3~0 1)} [137] L51-1-->L55-1: Formula: (and (not (= v_main_~p4~0_4 0)) (= v_main_~lk4~0_6 1)) InVars {main_~p4~0=v_main_~p4~0_4} OutVars{main_~p4~0=v_main_~p4~0_4, main_~lk4~0=v_main_~lk4~0_6} AuxVars[] AssignedVars[main_~lk4~0] {1787#(= main_~lk3~0 1)} is VALID [2022-04-28 02:02:35,708 INFO L290 TraceCheckUtils]: 12: Hoare triple {1787#(= main_~lk3~0 1)} [139] L55-1-->L59-1: Formula: (and (= v_main_~lk5~0_6 1) (not (= v_main_~p5~0_4 0))) InVars {main_~p5~0=v_main_~p5~0_4} OutVars{main_~p5~0=v_main_~p5~0_4, main_~lk5~0=v_main_~lk5~0_6} AuxVars[] AssignedVars[main_~lk5~0] {1787#(= main_~lk3~0 1)} is VALID [2022-04-28 02:02:35,708 INFO L290 TraceCheckUtils]: 13: Hoare triple {1787#(= main_~lk3~0 1)} [142] L59-1-->L65-1: Formula: (= v_main_~p1~0_5 0) InVars {main_~p1~0=v_main_~p1~0_5} OutVars{main_~p1~0=v_main_~p1~0_5} AuxVars[] AssignedVars[] {1787#(= main_~lk3~0 1)} is VALID [2022-04-28 02:02:35,708 INFO L290 TraceCheckUtils]: 14: Hoare triple {1787#(= main_~lk3~0 1)} [146] L65-1-->L70-1: Formula: (= v_main_~p2~0_3 0) InVars {main_~p2~0=v_main_~p2~0_3} OutVars{main_~p2~0=v_main_~p2~0_3} AuxVars[] AssignedVars[] {1787#(= main_~lk3~0 1)} is VALID [2022-04-28 02:02:35,708 INFO L290 TraceCheckUtils]: 15: Hoare triple {1787#(= main_~lk3~0 1)} [151] L70-1-->L76: Formula: (not (= v_main_~p3~0_2 0)) InVars {main_~p3~0=v_main_~p3~0_2} OutVars{main_~p3~0=v_main_~p3~0_2} AuxVars[] AssignedVars[] {1787#(= main_~lk3~0 1)} is VALID [2022-04-28 02:02:35,709 INFO L290 TraceCheckUtils]: 16: Hoare triple {1787#(= main_~lk3~0 1)} [153] L76-->L86-1: Formula: (not (= v_main_~lk3~0_2 1)) InVars {main_~lk3~0=v_main_~lk3~0_2} OutVars{main_~lk3~0=v_main_~lk3~0_2} AuxVars[] AssignedVars[] {1783#false} is VALID [2022-04-28 02:02:35,709 INFO L290 TraceCheckUtils]: 17: Hoare triple {1783#false} [147] L86-1-->mainErr0ASSERT_VIOLATIONERROR_FUNCTION: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {1783#false} is VALID [2022-04-28 02:02:35,709 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-28 02:02:35,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-28 02:02:35,709 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1892516248] [2022-04-28 02:02:35,709 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1892516248] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-28 02:02:35,709 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-28 02:02:35,709 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-04-28 02:02:35,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691172701] [2022-04-28 02:02:35,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-28 02:02:35,710 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 18 [2022-04-28 02:02:35,710 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-28 02:02:35,710 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 02:02:35,719 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 18 edges. 18 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-28 02:02:35,719 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-04-28 02:02:35,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-28 02:02:35,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-04-28 02:02:35,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-04-28 02:02:35,719 INFO L87 Difference]: Start difference. First operand 77 states and 115 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 02:02:35,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 02:02:35,793 INFO L93 Difference]: Finished difference Result 133 states and 201 transitions. [2022-04-28 02:02:35,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-04-28 02:02:35,793 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 18 [2022-04-28 02:02:35,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-28 02:02:35,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 02:02:35,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 63 transitions. [2022-04-28 02:02:35,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 02:02:35,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 63 transitions. [2022-04-28 02:02:35,795 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 4 states and 63 transitions. [2022-04-28 02:02:35,851 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 63 edges. 63 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-28 02:02:35,853 INFO L225 Difference]: With dead ends: 133 [2022-04-28 02:02:35,853 INFO L226 Difference]: Without dead ends: 131 [2022-04-28 02:02:35,853 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-04-28 02:02:35,854 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 69 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-28 02:02:35,854 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 46 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-28 02:02:35,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2022-04-28 02:02:35,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 105. [2022-04-28 02:02:35,858 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-28 02:02:35,858 INFO L82 GeneralOperation]: Start isEquivalent. First operand 131 states. Second operand has 105 states, 101 states have (on average 1.504950495049505) internal successors, (152), 101 states have internal predecessors, (152), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 02:02:35,858 INFO L74 IsIncluded]: Start isIncluded. First operand 131 states. Second operand has 105 states, 101 states have (on average 1.504950495049505) internal successors, (152), 101 states have internal predecessors, (152), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 02:02:35,859 INFO L87 Difference]: Start difference. First operand 131 states. Second operand has 105 states, 101 states have (on average 1.504950495049505) internal successors, (152), 101 states have internal predecessors, (152), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 02:02:35,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 02:02:35,862 INFO L93 Difference]: Finished difference Result 131 states and 196 transitions. [2022-04-28 02:02:35,862 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 196 transitions. [2022-04-28 02:02:35,862 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-28 02:02:35,862 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-28 02:02:35,862 INFO L74 IsIncluded]: Start isIncluded. First operand has 105 states, 101 states have (on average 1.504950495049505) internal successors, (152), 101 states have internal predecessors, (152), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Second operand 131 states. [2022-04-28 02:02:35,862 INFO L87 Difference]: Start difference. First operand has 105 states, 101 states have (on average 1.504950495049505) internal successors, (152), 101 states have internal predecessors, (152), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Second operand 131 states. [2022-04-28 02:02:35,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 02:02:35,865 INFO L93 Difference]: Finished difference Result 131 states and 196 transitions. [2022-04-28 02:02:35,865 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 196 transitions. [2022-04-28 02:02:35,865 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-28 02:02:35,866 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-28 02:02:35,866 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-28 02:02:35,866 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-28 02:02:35,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 101 states have (on average 1.504950495049505) internal successors, (152), 101 states have internal predecessors, (152), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 02:02:35,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 155 transitions. [2022-04-28 02:02:35,868 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 155 transitions. Word has length 18 [2022-04-28 02:02:35,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-28 02:02:35,868 INFO L495 AbstractCegarLoop]: Abstraction has 105 states and 155 transitions. [2022-04-28 02:02:35,868 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 02:02:35,868 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 155 transitions. [2022-04-28 02:02:35,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-04-28 02:02:35,869 INFO L187 NwaCegarLoop]: Found error trace [2022-04-28 02:02:35,869 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-28 02:02:35,869 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-04-28 02:02:35,869 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-28 02:02:35,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-28 02:02:35,869 INFO L85 PathProgramCache]: Analyzing trace with hash 1331135286, now seen corresponding path program 1 times [2022-04-28 02:02:35,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-28 02:02:35,869 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1029777970] [2022-04-28 02:02:35,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-28 02:02:35,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-28 02:02:35,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-28 02:02:35,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-28 02:02:35,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-28 02:02:35,895 INFO L290 TraceCheckUtils]: 0: Hoare triple {2326#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} [120] ULTIMATE.initENTRY-->ULTIMATE.initFINAL: Formula: (let ((.cse0 (select |v_#memory_int_1| 1))) (and (= (select |v_#length_1| 2) 15) (= 48 (select .cse0 0)) (= (select |v_#valid_1| 2) 1) (= (select |v_#valid_1| 0) 0) (< 0 |v_#StackHeapBarrier_1|) (= |v_#NULL.base_1| 0) (= 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] {2320#true} is VALID [2022-04-28 02:02:35,895 INFO L290 TraceCheckUtils]: 1: Hoare triple {2320#true} [123] ULTIMATE.initFINAL-->ULTIMATE.initEXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {2320#true} is VALID [2022-04-28 02:02:35,895 INFO L284 TraceCheckUtils]: 2: Hoare quadruple {2320#true} {2320#true} [163] ULTIMATE.initEXIT-->L-1: AOR: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] LVA: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {2320#true} is VALID [2022-04-28 02:02:35,895 INFO L272 TraceCheckUtils]: 0: Hoare triple {2320#true} [118] ULTIMATE.startENTRY-->ULTIMATE.initENTRY: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {2326#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} is VALID [2022-04-28 02:02:35,895 INFO L290 TraceCheckUtils]: 1: Hoare triple {2326#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} [120] ULTIMATE.initENTRY-->ULTIMATE.initFINAL: Formula: (let ((.cse0 (select |v_#memory_int_1| 1))) (and (= (select |v_#length_1| 2) 15) (= 48 (select .cse0 0)) (= (select |v_#valid_1| 2) 1) (= (select |v_#valid_1| 0) 0) (< 0 |v_#StackHeapBarrier_1|) (= |v_#NULL.base_1| 0) (= 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] {2320#true} is VALID [2022-04-28 02:02:35,896 INFO L290 TraceCheckUtils]: 2: Hoare triple {2320#true} [123] ULTIMATE.initFINAL-->ULTIMATE.initEXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {2320#true} is VALID [2022-04-28 02:02:35,896 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {2320#true} {2320#true} [163] ULTIMATE.initEXIT-->L-1: AOR: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] LVA: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {2320#true} is VALID [2022-04-28 02:02:35,896 INFO L272 TraceCheckUtils]: 4: Hoare triple {2320#true} [119] L-1-->mainENTRY: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {2320#true} is VALID [2022-04-28 02:02:35,896 INFO L290 TraceCheckUtils]: 5: Hoare triple {2320#true} [122] mainENTRY-->L85-1: Formula: (and (= v_main_~p4~0_1 |v_main_#t~nondet7_2|) (<= |v_main_#t~nondet8_2| 2147483647) (<= |v_main_#t~nondet5_2| 2147483647) (<= 0 (+ |v_main_#t~nondet8_2| 2147483648)) (<= |v_main_#t~nondet6_2| 2147483647) (= v_main_~p1~0_1 |v_main_#t~nondet4_2|) (= v_main_~p2~0_2 |v_main_#t~nondet5_2|) (= v_main_~p5~0_1 |v_main_#t~nondet8_2|) (<= 0 (+ |v_main_#t~nondet4_2| 2147483648)) (<= 0 (+ |v_main_#t~nondet7_2| 2147483648)) (= v_main_~p3~0_1 |v_main_#t~nondet6_2|) (<= |v_main_#t~nondet4_2| 2147483647) (<= 0 (+ |v_main_#t~nondet6_2| 2147483648)) (<= 0 (+ |v_main_#t~nondet5_2| 2147483648)) (<= |v_main_#t~nondet7_2| 2147483647)) InVars {main_#t~nondet5=|v_main_#t~nondet5_2|, main_#t~nondet4=|v_main_#t~nondet4_2|, main_#t~nondet7=|v_main_#t~nondet7_2|, main_#t~nondet6=|v_main_#t~nondet6_2|, main_#t~nondet8=|v_main_#t~nondet8_2|} OutVars{main_~p5~0=v_main_~p5~0_1, main_~lk2~0=v_main_~lk2~0_4, main_~lk3~0=v_main_~lk3~0_1, main_~p1~0=v_main_~p1~0_1, main_~lk1~0=v_main_~lk1~0_1, main_~lk5~0=v_main_~lk5~0_1, main_~lk4~0=v_main_~lk4~0_1, main_~p3~0=v_main_~p3~0_1, main_~p2~0=v_main_~p2~0_2, main_~p4~0=v_main_~p4~0_1, main_~cond~0=v_main_~cond~0_1} AuxVars[] AssignedVars[main_#t~nondet5, main_#t~nondet4, main_#t~nondet7, main_~lk3~0, main_#t~nondet6, main_~p1~0, main_~lk1~0, main_~lk5~0, main_~p2~0, main_~p4~0, main_#t~nondet8, main_~cond~0, main_~p5~0, main_~lk2~0, main_~lk4~0, main_~p3~0] {2320#true} is VALID [2022-04-28 02:02:35,896 INFO L290 TraceCheckUtils]: 6: Hoare triple {2320#true} [126] L85-1-->L28: Formula: (and (= |v_main_#t~nondet9_2| v_main_~cond~0_2) (<= 0 (+ |v_main_#t~nondet9_2| 2147483648)) (<= |v_main_#t~nondet9_2| 2147483647)) InVars {main_#t~nondet9=|v_main_#t~nondet9_2|} OutVars{main_~cond~0=v_main_~cond~0_2} AuxVars[] AssignedVars[main_#t~nondet9, main_~cond~0] {2320#true} is VALID [2022-04-28 02:02:35,896 INFO L290 TraceCheckUtils]: 7: Hoare triple {2320#true} [129] L28-->L43: Formula: (and (= v_main_~lk4~0_2 0) (= v_main_~lk1~0_2 0) (= v_main_~lk3~0_5 0) (= v_main_~lk2~0_5 0) (not (= 0 v_main_~cond~0_4)) (= v_main_~lk5~0_2 0)) InVars {main_~cond~0=v_main_~cond~0_4} OutVars{main_~lk2~0=v_main_~lk2~0_5, main_~lk3~0=v_main_~lk3~0_5, main_~lk1~0=v_main_~lk1~0_2, main_~lk5~0=v_main_~lk5~0_2, main_~lk4~0=v_main_~lk4~0_2, main_~cond~0=v_main_~cond~0_4} AuxVars[] AssignedVars[main_~lk2~0, main_~lk3~0, main_~lk1~0, main_~lk5~0, main_~lk4~0] {2320#true} is VALID [2022-04-28 02:02:35,896 INFO L290 TraceCheckUtils]: 8: Hoare triple {2320#true} [132] L43-->L43-2: Formula: (= v_main_~p1~0_3 0) InVars {main_~p1~0=v_main_~p1~0_3} OutVars{main_~p1~0=v_main_~p1~0_3} AuxVars[] AssignedVars[] {2320#true} is VALID [2022-04-28 02:02:35,896 INFO L290 TraceCheckUtils]: 9: Hoare triple {2320#true} [134] L43-2-->L47-1: Formula: (= v_main_~p2~0_5 0) InVars {main_~p2~0=v_main_~p2~0_5} OutVars{main_~p2~0=v_main_~p2~0_5} AuxVars[] AssignedVars[] {2320#true} is VALID [2022-04-28 02:02:35,897 INFO L290 TraceCheckUtils]: 10: Hoare triple {2320#true} [136] L47-1-->L51-1: Formula: (= v_main_~p3~0_5 0) InVars {main_~p3~0=v_main_~p3~0_5} OutVars{main_~p3~0=v_main_~p3~0_5} AuxVars[] AssignedVars[] {2325#(= main_~p3~0 0)} is VALID [2022-04-28 02:02:35,897 INFO L290 TraceCheckUtils]: 11: Hoare triple {2325#(= main_~p3~0 0)} [137] L51-1-->L55-1: Formula: (and (not (= v_main_~p4~0_4 0)) (= v_main_~lk4~0_6 1)) InVars {main_~p4~0=v_main_~p4~0_4} OutVars{main_~p4~0=v_main_~p4~0_4, main_~lk4~0=v_main_~lk4~0_6} AuxVars[] AssignedVars[main_~lk4~0] {2325#(= main_~p3~0 0)} is VALID [2022-04-28 02:02:35,897 INFO L290 TraceCheckUtils]: 12: Hoare triple {2325#(= main_~p3~0 0)} [139] L55-1-->L59-1: Formula: (and (= v_main_~lk5~0_6 1) (not (= v_main_~p5~0_4 0))) InVars {main_~p5~0=v_main_~p5~0_4} OutVars{main_~p5~0=v_main_~p5~0_4, main_~lk5~0=v_main_~lk5~0_6} AuxVars[] AssignedVars[main_~lk5~0] {2325#(= main_~p3~0 0)} is VALID [2022-04-28 02:02:35,897 INFO L290 TraceCheckUtils]: 13: Hoare triple {2325#(= main_~p3~0 0)} [142] L59-1-->L65-1: Formula: (= v_main_~p1~0_5 0) InVars {main_~p1~0=v_main_~p1~0_5} OutVars{main_~p1~0=v_main_~p1~0_5} AuxVars[] AssignedVars[] {2325#(= main_~p3~0 0)} is VALID [2022-04-28 02:02:35,898 INFO L290 TraceCheckUtils]: 14: Hoare triple {2325#(= main_~p3~0 0)} [146] L65-1-->L70-1: Formula: (= v_main_~p2~0_3 0) InVars {main_~p2~0=v_main_~p2~0_3} OutVars{main_~p2~0=v_main_~p2~0_3} AuxVars[] AssignedVars[] {2325#(= main_~p3~0 0)} is VALID [2022-04-28 02:02:35,898 INFO L290 TraceCheckUtils]: 15: Hoare triple {2325#(= main_~p3~0 0)} [151] L70-1-->L76: Formula: (not (= v_main_~p3~0_2 0)) InVars {main_~p3~0=v_main_~p3~0_2} OutVars{main_~p3~0=v_main_~p3~0_2} AuxVars[] AssignedVars[] {2321#false} is VALID [2022-04-28 02:02:35,898 INFO L290 TraceCheckUtils]: 16: Hoare triple {2321#false} [153] L76-->L86-1: Formula: (not (= v_main_~lk3~0_2 1)) InVars {main_~lk3~0=v_main_~lk3~0_2} OutVars{main_~lk3~0=v_main_~lk3~0_2} AuxVars[] AssignedVars[] {2321#false} is VALID [2022-04-28 02:02:35,898 INFO L290 TraceCheckUtils]: 17: Hoare triple {2321#false} [147] L86-1-->mainErr0ASSERT_VIOLATIONERROR_FUNCTION: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {2321#false} is VALID [2022-04-28 02:02:35,898 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-28 02:02:35,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-28 02:02:35,898 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1029777970] [2022-04-28 02:02:35,898 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1029777970] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-28 02:02:35,898 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-28 02:02:35,898 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-04-28 02:02:35,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222667609] [2022-04-28 02:02:35,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-28 02:02:35,899 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 18 [2022-04-28 02:02:35,899 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-28 02:02:35,899 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 02:02:35,908 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 18 edges. 18 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-28 02:02:35,908 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-04-28 02:02:35,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-28 02:02:35,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-04-28 02:02:35,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-04-28 02:02:35,908 INFO L87 Difference]: Start difference. First operand 105 states and 155 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 02:02:35,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 02:02:35,981 INFO L93 Difference]: Finished difference Result 233 states and 345 transitions. [2022-04-28 02:02:35,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-04-28 02:02:35,982 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 18 [2022-04-28 02:02:35,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-28 02:02:35,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 02:02:35,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 96 transitions. [2022-04-28 02:02:35,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 02:02:35,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 96 transitions. [2022-04-28 02:02:35,984 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 4 states and 96 transitions. [2022-04-28 02:02:36,042 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 96 edges. 96 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-28 02:02:36,044 INFO L225 Difference]: With dead ends: 233 [2022-04-28 02:02:36,044 INFO L226 Difference]: Without dead ends: 139 [2022-04-28 02:02:36,044 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-04-28 02:02:36,045 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 61 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-28 02:02:36,045 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 59 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-28 02:02:36,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2022-04-28 02:02:36,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 137. [2022-04-28 02:02:36,050 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-28 02:02:36,050 INFO L82 GeneralOperation]: Start isEquivalent. First operand 139 states. Second operand has 137 states, 133 states have (on average 1.443609022556391) internal successors, (192), 133 states have internal predecessors, (192), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 02:02:36,050 INFO L74 IsIncluded]: Start isIncluded. First operand 139 states. Second operand has 137 states, 133 states have (on average 1.443609022556391) internal successors, (192), 133 states have internal predecessors, (192), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 02:02:36,051 INFO L87 Difference]: Start difference. First operand 139 states. Second operand has 137 states, 133 states have (on average 1.443609022556391) internal successors, (192), 133 states have internal predecessors, (192), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 02:02:36,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 02:02:36,053 INFO L93 Difference]: Finished difference Result 139 states and 196 transitions. [2022-04-28 02:02:36,053 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 196 transitions. [2022-04-28 02:02:36,054 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-28 02:02:36,054 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-28 02:02:36,054 INFO L74 IsIncluded]: Start isIncluded. First operand has 137 states, 133 states have (on average 1.443609022556391) internal successors, (192), 133 states have internal predecessors, (192), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Second operand 139 states. [2022-04-28 02:02:36,054 INFO L87 Difference]: Start difference. First operand has 137 states, 133 states have (on average 1.443609022556391) internal successors, (192), 133 states have internal predecessors, (192), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Second operand 139 states. [2022-04-28 02:02:36,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 02:02:36,057 INFO L93 Difference]: Finished difference Result 139 states and 196 transitions. [2022-04-28 02:02:36,057 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 196 transitions. [2022-04-28 02:02:36,057 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-28 02:02:36,057 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-28 02:02:36,057 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-28 02:02:36,057 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-28 02:02:36,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 133 states have (on average 1.443609022556391) internal successors, (192), 133 states have internal predecessors, (192), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 02:02:36,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 195 transitions. [2022-04-28 02:02:36,060 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 195 transitions. Word has length 18 [2022-04-28 02:02:36,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-28 02:02:36,061 INFO L495 AbstractCegarLoop]: Abstraction has 137 states and 195 transitions. [2022-04-28 02:02:36,061 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 02:02:36,061 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 195 transitions. [2022-04-28 02:02:36,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-04-28 02:02:36,061 INFO L187 NwaCegarLoop]: Found error trace [2022-04-28 02:02:36,061 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-28 02:02:36,061 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-04-28 02:02:36,061 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-28 02:02:36,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-28 02:02:36,062 INFO L85 PathProgramCache]: Analyzing trace with hash 123007539, now seen corresponding path program 1 times [2022-04-28 02:02:36,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-28 02:02:36,062 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055369050] [2022-04-28 02:02:36,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-28 02:02:36,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-28 02:02:36,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-28 02:02:36,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-28 02:02:36,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-28 02:02:36,085 INFO L290 TraceCheckUtils]: 0: Hoare triple {3020#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} [120] ULTIMATE.initENTRY-->ULTIMATE.initFINAL: Formula: (let ((.cse0 (select |v_#memory_int_1| 1))) (and (= (select |v_#length_1| 2) 15) (= 48 (select .cse0 0)) (= (select |v_#valid_1| 2) 1) (= (select |v_#valid_1| 0) 0) (< 0 |v_#StackHeapBarrier_1|) (= |v_#NULL.base_1| 0) (= 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] {3014#true} is VALID [2022-04-28 02:02:36,085 INFO L290 TraceCheckUtils]: 1: Hoare triple {3014#true} [123] ULTIMATE.initFINAL-->ULTIMATE.initEXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {3014#true} is VALID [2022-04-28 02:02:36,085 INFO L284 TraceCheckUtils]: 2: Hoare quadruple {3014#true} {3014#true} [163] ULTIMATE.initEXIT-->L-1: AOR: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] LVA: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {3014#true} is VALID [2022-04-28 02:02:36,086 INFO L272 TraceCheckUtils]: 0: Hoare triple {3014#true} [118] ULTIMATE.startENTRY-->ULTIMATE.initENTRY: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {3020#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} is VALID [2022-04-28 02:02:36,086 INFO L290 TraceCheckUtils]: 1: Hoare triple {3020#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} [120] ULTIMATE.initENTRY-->ULTIMATE.initFINAL: Formula: (let ((.cse0 (select |v_#memory_int_1| 1))) (and (= (select |v_#length_1| 2) 15) (= 48 (select .cse0 0)) (= (select |v_#valid_1| 2) 1) (= (select |v_#valid_1| 0) 0) (< 0 |v_#StackHeapBarrier_1|) (= |v_#NULL.base_1| 0) (= 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] {3014#true} is VALID [2022-04-28 02:02:36,086 INFO L290 TraceCheckUtils]: 2: Hoare triple {3014#true} [123] ULTIMATE.initFINAL-->ULTIMATE.initEXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {3014#true} is VALID [2022-04-28 02:02:36,086 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {3014#true} {3014#true} [163] ULTIMATE.initEXIT-->L-1: AOR: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] LVA: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {3014#true} is VALID [2022-04-28 02:02:36,086 INFO L272 TraceCheckUtils]: 4: Hoare triple {3014#true} [119] L-1-->mainENTRY: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {3014#true} is VALID [2022-04-28 02:02:36,086 INFO L290 TraceCheckUtils]: 5: Hoare triple {3014#true} [122] mainENTRY-->L85-1: Formula: (and (= v_main_~p4~0_1 |v_main_#t~nondet7_2|) (<= |v_main_#t~nondet8_2| 2147483647) (<= |v_main_#t~nondet5_2| 2147483647) (<= 0 (+ |v_main_#t~nondet8_2| 2147483648)) (<= |v_main_#t~nondet6_2| 2147483647) (= v_main_~p1~0_1 |v_main_#t~nondet4_2|) (= v_main_~p2~0_2 |v_main_#t~nondet5_2|) (= v_main_~p5~0_1 |v_main_#t~nondet8_2|) (<= 0 (+ |v_main_#t~nondet4_2| 2147483648)) (<= 0 (+ |v_main_#t~nondet7_2| 2147483648)) (= v_main_~p3~0_1 |v_main_#t~nondet6_2|) (<= |v_main_#t~nondet4_2| 2147483647) (<= 0 (+ |v_main_#t~nondet6_2| 2147483648)) (<= 0 (+ |v_main_#t~nondet5_2| 2147483648)) (<= |v_main_#t~nondet7_2| 2147483647)) InVars {main_#t~nondet5=|v_main_#t~nondet5_2|, main_#t~nondet4=|v_main_#t~nondet4_2|, main_#t~nondet7=|v_main_#t~nondet7_2|, main_#t~nondet6=|v_main_#t~nondet6_2|, main_#t~nondet8=|v_main_#t~nondet8_2|} OutVars{main_~p5~0=v_main_~p5~0_1, main_~lk2~0=v_main_~lk2~0_4, main_~lk3~0=v_main_~lk3~0_1, main_~p1~0=v_main_~p1~0_1, main_~lk1~0=v_main_~lk1~0_1, main_~lk5~0=v_main_~lk5~0_1, main_~lk4~0=v_main_~lk4~0_1, main_~p3~0=v_main_~p3~0_1, main_~p2~0=v_main_~p2~0_2, main_~p4~0=v_main_~p4~0_1, main_~cond~0=v_main_~cond~0_1} AuxVars[] AssignedVars[main_#t~nondet5, main_#t~nondet4, main_#t~nondet7, main_~lk3~0, main_#t~nondet6, main_~p1~0, main_~lk1~0, main_~lk5~0, main_~p2~0, main_~p4~0, main_#t~nondet8, main_~cond~0, main_~p5~0, main_~lk2~0, main_~lk4~0, main_~p3~0] {3014#true} is VALID [2022-04-28 02:02:36,086 INFO L290 TraceCheckUtils]: 6: Hoare triple {3014#true} [126] L85-1-->L28: Formula: (and (= |v_main_#t~nondet9_2| v_main_~cond~0_2) (<= 0 (+ |v_main_#t~nondet9_2| 2147483648)) (<= |v_main_#t~nondet9_2| 2147483647)) InVars {main_#t~nondet9=|v_main_#t~nondet9_2|} OutVars{main_~cond~0=v_main_~cond~0_2} AuxVars[] AssignedVars[main_#t~nondet9, main_~cond~0] {3014#true} is VALID [2022-04-28 02:02:36,086 INFO L290 TraceCheckUtils]: 7: Hoare triple {3014#true} [129] L28-->L43: Formula: (and (= v_main_~lk4~0_2 0) (= v_main_~lk1~0_2 0) (= v_main_~lk3~0_5 0) (= v_main_~lk2~0_5 0) (not (= 0 v_main_~cond~0_4)) (= v_main_~lk5~0_2 0)) InVars {main_~cond~0=v_main_~cond~0_4} OutVars{main_~lk2~0=v_main_~lk2~0_5, main_~lk3~0=v_main_~lk3~0_5, main_~lk1~0=v_main_~lk1~0_2, main_~lk5~0=v_main_~lk5~0_2, main_~lk4~0=v_main_~lk4~0_2, main_~cond~0=v_main_~cond~0_4} AuxVars[] AssignedVars[main_~lk2~0, main_~lk3~0, main_~lk1~0, main_~lk5~0, main_~lk4~0] {3014#true} is VALID [2022-04-28 02:02:36,086 INFO L290 TraceCheckUtils]: 8: Hoare triple {3014#true} [132] L43-->L43-2: Formula: (= v_main_~p1~0_3 0) InVars {main_~p1~0=v_main_~p1~0_3} OutVars{main_~p1~0=v_main_~p1~0_3} AuxVars[] AssignedVars[] {3014#true} is VALID [2022-04-28 02:02:36,087 INFO L290 TraceCheckUtils]: 9: Hoare triple {3014#true} [134] L43-2-->L47-1: Formula: (= v_main_~p2~0_5 0) InVars {main_~p2~0=v_main_~p2~0_5} OutVars{main_~p2~0=v_main_~p2~0_5} AuxVars[] AssignedVars[] {3014#true} is VALID [2022-04-28 02:02:36,087 INFO L290 TraceCheckUtils]: 10: Hoare triple {3014#true} [135] L47-1-->L51-1: Formula: (and (= v_main_~lk3~0_6 1) (not (= v_main_~p3~0_4 0))) InVars {main_~p3~0=v_main_~p3~0_4} OutVars{main_~p3~0=v_main_~p3~0_4, main_~lk3~0=v_main_~lk3~0_6} AuxVars[] AssignedVars[main_~lk3~0] {3019#(not (= main_~p3~0 0))} is VALID [2022-04-28 02:02:36,087 INFO L290 TraceCheckUtils]: 11: Hoare triple {3019#(not (= main_~p3~0 0))} [137] L51-1-->L55-1: Formula: (and (not (= v_main_~p4~0_4 0)) (= v_main_~lk4~0_6 1)) InVars {main_~p4~0=v_main_~p4~0_4} OutVars{main_~p4~0=v_main_~p4~0_4, main_~lk4~0=v_main_~lk4~0_6} AuxVars[] AssignedVars[main_~lk4~0] {3019#(not (= main_~p3~0 0))} is VALID [2022-04-28 02:02:36,087 INFO L290 TraceCheckUtils]: 12: Hoare triple {3019#(not (= main_~p3~0 0))} [139] L55-1-->L59-1: Formula: (and (= v_main_~lk5~0_6 1) (not (= v_main_~p5~0_4 0))) InVars {main_~p5~0=v_main_~p5~0_4} OutVars{main_~p5~0=v_main_~p5~0_4, main_~lk5~0=v_main_~lk5~0_6} AuxVars[] AssignedVars[main_~lk5~0] {3019#(not (= main_~p3~0 0))} is VALID [2022-04-28 02:02:36,088 INFO L290 TraceCheckUtils]: 13: Hoare triple {3019#(not (= main_~p3~0 0))} [142] L59-1-->L65-1: Formula: (= v_main_~p1~0_5 0) InVars {main_~p1~0=v_main_~p1~0_5} OutVars{main_~p1~0=v_main_~p1~0_5} AuxVars[] AssignedVars[] {3019#(not (= main_~p3~0 0))} is VALID [2022-04-28 02:02:36,088 INFO L290 TraceCheckUtils]: 14: Hoare triple {3019#(not (= main_~p3~0 0))} [146] L65-1-->L70-1: Formula: (= v_main_~p2~0_3 0) InVars {main_~p2~0=v_main_~p2~0_3} OutVars{main_~p2~0=v_main_~p2~0_3} AuxVars[] AssignedVars[] {3019#(not (= main_~p3~0 0))} is VALID [2022-04-28 02:02:36,088 INFO L290 TraceCheckUtils]: 15: Hoare triple {3019#(not (= main_~p3~0 0))} [152] L70-1-->L75-1: Formula: (= v_main_~p3~0_3 0) InVars {main_~p3~0=v_main_~p3~0_3} OutVars{main_~p3~0=v_main_~p3~0_3} AuxVars[] AssignedVars[] {3015#false} is VALID [2022-04-28 02:02:36,088 INFO L290 TraceCheckUtils]: 16: Hoare triple {3015#false} [155] L75-1-->L81: Formula: (not (= v_main_~p4~0_2 0)) InVars {main_~p4~0=v_main_~p4~0_2} OutVars{main_~p4~0=v_main_~p4~0_2} AuxVars[] AssignedVars[] {3015#false} is VALID [2022-04-28 02:02:36,088 INFO L290 TraceCheckUtils]: 17: Hoare triple {3015#false} [157] L81-->L86-1: Formula: (not (= v_main_~lk4~0_3 1)) InVars {main_~lk4~0=v_main_~lk4~0_3} OutVars{main_~lk4~0=v_main_~lk4~0_3} AuxVars[] AssignedVars[] {3015#false} is VALID [2022-04-28 02:02:36,089 INFO L290 TraceCheckUtils]: 18: Hoare triple {3015#false} [147] L86-1-->mainErr0ASSERT_VIOLATIONERROR_FUNCTION: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {3015#false} is VALID [2022-04-28 02:02:36,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-28 02:02:36,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-28 02:02:36,089 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2055369050] [2022-04-28 02:02:36,089 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2055369050] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-28 02:02:36,089 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-28 02:02:36,089 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-04-28 02:02:36,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658920941] [2022-04-28 02:02:36,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-28 02:02:36,089 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 3 states have internal predecessors, (16), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 19 [2022-04-28 02:02:36,089 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-28 02:02:36,090 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 4 states, 4 states have (on average 4.0) internal successors, (16), 3 states have internal predecessors, (16), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 02:02:36,099 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 19 edges. 19 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-28 02:02:36,099 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-04-28 02:02:36,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-28 02:02:36,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-04-28 02:02:36,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-04-28 02:02:36,100 INFO L87 Difference]: Start difference. First operand 137 states and 195 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 3 states have internal predecessors, (16), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 02:02:36,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 02:02:36,167 INFO L93 Difference]: Finished difference Result 205 states and 289 transitions. [2022-04-28 02:02:36,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-04-28 02:02:36,167 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 3 states have internal predecessors, (16), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 19 [2022-04-28 02:02:36,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-28 02:02:36,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 3 states have internal predecessors, (16), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 02:02:36,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 91 transitions. [2022-04-28 02:02:36,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 3 states have internal predecessors, (16), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 02:02:36,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 91 transitions. [2022-04-28 02:02:36,169 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 4 states and 91 transitions. [2022-04-28 02:02:36,227 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 91 edges. 91 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-28 02:02:36,228 INFO L225 Difference]: With dead ends: 205 [2022-04-28 02:02:36,228 INFO L226 Difference]: Without dead ends: 143 [2022-04-28 02:02:36,229 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-04-28 02:02:36,229 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 64 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-28 02:02:36,229 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 57 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-28 02:02:36,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2022-04-28 02:02:36,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 141. [2022-04-28 02:02:36,233 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-28 02:02:36,233 INFO L82 GeneralOperation]: Start isEquivalent. First operand 143 states. Second operand has 141 states, 137 states have (on average 1.4014598540145986) internal successors, (192), 137 states have internal predecessors, (192), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 02:02:36,234 INFO L74 IsIncluded]: Start isIncluded. First operand 143 states. Second operand has 141 states, 137 states have (on average 1.4014598540145986) internal successors, (192), 137 states have internal predecessors, (192), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 02:02:36,234 INFO L87 Difference]: Start difference. First operand 143 states. Second operand has 141 states, 137 states have (on average 1.4014598540145986) internal successors, (192), 137 states have internal predecessors, (192), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 02:02:36,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 02:02:36,237 INFO L93 Difference]: Finished difference Result 143 states and 196 transitions. [2022-04-28 02:02:36,237 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 196 transitions. [2022-04-28 02:02:36,237 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-28 02:02:36,237 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-28 02:02:36,237 INFO L74 IsIncluded]: Start isIncluded. First operand has 141 states, 137 states have (on average 1.4014598540145986) internal successors, (192), 137 states have internal predecessors, (192), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Second operand 143 states. [2022-04-28 02:02:36,237 INFO L87 Difference]: Start difference. First operand has 141 states, 137 states have (on average 1.4014598540145986) internal successors, (192), 137 states have internal predecessors, (192), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Second operand 143 states. [2022-04-28 02:02:36,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 02:02:36,239 INFO L93 Difference]: Finished difference Result 143 states and 196 transitions. [2022-04-28 02:02:36,239 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 196 transitions. [2022-04-28 02:02:36,240 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-28 02:02:36,240 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-28 02:02:36,240 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-28 02:02:36,240 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-28 02:02:36,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 137 states have (on average 1.4014598540145986) internal successors, (192), 137 states have internal predecessors, (192), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 02:02:36,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 195 transitions. [2022-04-28 02:02:36,242 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 195 transitions. Word has length 19 [2022-04-28 02:02:36,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-28 02:02:36,242 INFO L495 AbstractCegarLoop]: Abstraction has 141 states and 195 transitions. [2022-04-28 02:02:36,242 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 3 states have internal predecessors, (16), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 02:02:36,242 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 195 transitions. [2022-04-28 02:02:36,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-04-28 02:02:36,242 INFO L187 NwaCegarLoop]: Found error trace [2022-04-28 02:02:36,242 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-28 02:02:36,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-04-28 02:02:36,243 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-28 02:02:36,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-28 02:02:36,243 INFO L85 PathProgramCache]: Analyzing trace with hash -1684446924, now seen corresponding path program 1 times [2022-04-28 02:02:36,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-28 02:02:36,243 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488158923] [2022-04-28 02:02:36,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-28 02:02:36,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-28 02:02:36,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-28 02:02:36,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-28 02:02:36,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-28 02:02:36,265 INFO L290 TraceCheckUtils]: 0: Hoare triple {3698#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} [120] ULTIMATE.initENTRY-->ULTIMATE.initFINAL: Formula: (let ((.cse0 (select |v_#memory_int_1| 1))) (and (= (select |v_#length_1| 2) 15) (= 48 (select .cse0 0)) (= (select |v_#valid_1| 2) 1) (= (select |v_#valid_1| 0) 0) (< 0 |v_#StackHeapBarrier_1|) (= |v_#NULL.base_1| 0) (= 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] {3692#true} is VALID [2022-04-28 02:02:36,266 INFO L290 TraceCheckUtils]: 1: Hoare triple {3692#true} [123] ULTIMATE.initFINAL-->ULTIMATE.initEXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {3692#true} is VALID [2022-04-28 02:02:36,266 INFO L284 TraceCheckUtils]: 2: Hoare quadruple {3692#true} {3692#true} [163] ULTIMATE.initEXIT-->L-1: AOR: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] LVA: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {3692#true} is VALID [2022-04-28 02:02:36,266 INFO L272 TraceCheckUtils]: 0: Hoare triple {3692#true} [118] ULTIMATE.startENTRY-->ULTIMATE.initENTRY: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {3698#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} is VALID [2022-04-28 02:02:36,266 INFO L290 TraceCheckUtils]: 1: Hoare triple {3698#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} [120] ULTIMATE.initENTRY-->ULTIMATE.initFINAL: Formula: (let ((.cse0 (select |v_#memory_int_1| 1))) (and (= (select |v_#length_1| 2) 15) (= 48 (select .cse0 0)) (= (select |v_#valid_1| 2) 1) (= (select |v_#valid_1| 0) 0) (< 0 |v_#StackHeapBarrier_1|) (= |v_#NULL.base_1| 0) (= 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] {3692#true} is VALID [2022-04-28 02:02:36,266 INFO L290 TraceCheckUtils]: 2: Hoare triple {3692#true} [123] ULTIMATE.initFINAL-->ULTIMATE.initEXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {3692#true} is VALID [2022-04-28 02:02:36,266 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {3692#true} {3692#true} [163] ULTIMATE.initEXIT-->L-1: AOR: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] LVA: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {3692#true} is VALID [2022-04-28 02:02:36,266 INFO L272 TraceCheckUtils]: 4: Hoare triple {3692#true} [119] L-1-->mainENTRY: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {3692#true} is VALID [2022-04-28 02:02:36,267 INFO L290 TraceCheckUtils]: 5: Hoare triple {3692#true} [122] mainENTRY-->L85-1: Formula: (and (= v_main_~p4~0_1 |v_main_#t~nondet7_2|) (<= |v_main_#t~nondet8_2| 2147483647) (<= |v_main_#t~nondet5_2| 2147483647) (<= 0 (+ |v_main_#t~nondet8_2| 2147483648)) (<= |v_main_#t~nondet6_2| 2147483647) (= v_main_~p1~0_1 |v_main_#t~nondet4_2|) (= v_main_~p2~0_2 |v_main_#t~nondet5_2|) (= v_main_~p5~0_1 |v_main_#t~nondet8_2|) (<= 0 (+ |v_main_#t~nondet4_2| 2147483648)) (<= 0 (+ |v_main_#t~nondet7_2| 2147483648)) (= v_main_~p3~0_1 |v_main_#t~nondet6_2|) (<= |v_main_#t~nondet4_2| 2147483647) (<= 0 (+ |v_main_#t~nondet6_2| 2147483648)) (<= 0 (+ |v_main_#t~nondet5_2| 2147483648)) (<= |v_main_#t~nondet7_2| 2147483647)) InVars {main_#t~nondet5=|v_main_#t~nondet5_2|, main_#t~nondet4=|v_main_#t~nondet4_2|, main_#t~nondet7=|v_main_#t~nondet7_2|, main_#t~nondet6=|v_main_#t~nondet6_2|, main_#t~nondet8=|v_main_#t~nondet8_2|} OutVars{main_~p5~0=v_main_~p5~0_1, main_~lk2~0=v_main_~lk2~0_4, main_~lk3~0=v_main_~lk3~0_1, main_~p1~0=v_main_~p1~0_1, main_~lk1~0=v_main_~lk1~0_1, main_~lk5~0=v_main_~lk5~0_1, main_~lk4~0=v_main_~lk4~0_1, main_~p3~0=v_main_~p3~0_1, main_~p2~0=v_main_~p2~0_2, main_~p4~0=v_main_~p4~0_1, main_~cond~0=v_main_~cond~0_1} AuxVars[] AssignedVars[main_#t~nondet5, main_#t~nondet4, main_#t~nondet7, main_~lk3~0, main_#t~nondet6, main_~p1~0, main_~lk1~0, main_~lk5~0, main_~p2~0, main_~p4~0, main_#t~nondet8, main_~cond~0, main_~p5~0, main_~lk2~0, main_~lk4~0, main_~p3~0] {3692#true} is VALID [2022-04-28 02:02:36,267 INFO L290 TraceCheckUtils]: 6: Hoare triple {3692#true} [126] L85-1-->L28: Formula: (and (= |v_main_#t~nondet9_2| v_main_~cond~0_2) (<= 0 (+ |v_main_#t~nondet9_2| 2147483648)) (<= |v_main_#t~nondet9_2| 2147483647)) InVars {main_#t~nondet9=|v_main_#t~nondet9_2|} OutVars{main_~cond~0=v_main_~cond~0_2} AuxVars[] AssignedVars[main_#t~nondet9, main_~cond~0] {3692#true} is VALID [2022-04-28 02:02:36,267 INFO L290 TraceCheckUtils]: 7: Hoare triple {3692#true} [129] L28-->L43: Formula: (and (= v_main_~lk4~0_2 0) (= v_main_~lk1~0_2 0) (= v_main_~lk3~0_5 0) (= v_main_~lk2~0_5 0) (not (= 0 v_main_~cond~0_4)) (= v_main_~lk5~0_2 0)) InVars {main_~cond~0=v_main_~cond~0_4} OutVars{main_~lk2~0=v_main_~lk2~0_5, main_~lk3~0=v_main_~lk3~0_5, main_~lk1~0=v_main_~lk1~0_2, main_~lk5~0=v_main_~lk5~0_2, main_~lk4~0=v_main_~lk4~0_2, main_~cond~0=v_main_~cond~0_4} AuxVars[] AssignedVars[main_~lk2~0, main_~lk3~0, main_~lk1~0, main_~lk5~0, main_~lk4~0] {3692#true} is VALID [2022-04-28 02:02:36,267 INFO L290 TraceCheckUtils]: 8: Hoare triple {3692#true} [132] L43-->L43-2: Formula: (= v_main_~p1~0_3 0) InVars {main_~p1~0=v_main_~p1~0_3} OutVars{main_~p1~0=v_main_~p1~0_3} AuxVars[] AssignedVars[] {3692#true} is VALID [2022-04-28 02:02:36,267 INFO L290 TraceCheckUtils]: 9: Hoare triple {3692#true} [134] L43-2-->L47-1: Formula: (= v_main_~p2~0_5 0) InVars {main_~p2~0=v_main_~p2~0_5} OutVars{main_~p2~0=v_main_~p2~0_5} AuxVars[] AssignedVars[] {3692#true} is VALID [2022-04-28 02:02:36,267 INFO L290 TraceCheckUtils]: 10: Hoare triple {3692#true} [136] L47-1-->L51-1: Formula: (= v_main_~p3~0_5 0) InVars {main_~p3~0=v_main_~p3~0_5} OutVars{main_~p3~0=v_main_~p3~0_5} AuxVars[] AssignedVars[] {3692#true} is VALID [2022-04-28 02:02:36,267 INFO L290 TraceCheckUtils]: 11: Hoare triple {3692#true} [137] L51-1-->L55-1: Formula: (and (not (= v_main_~p4~0_4 0)) (= v_main_~lk4~0_6 1)) InVars {main_~p4~0=v_main_~p4~0_4} OutVars{main_~p4~0=v_main_~p4~0_4, main_~lk4~0=v_main_~lk4~0_6} AuxVars[] AssignedVars[main_~lk4~0] {3697#(= main_~lk4~0 1)} is VALID [2022-04-28 02:02:36,268 INFO L290 TraceCheckUtils]: 12: Hoare triple {3697#(= main_~lk4~0 1)} [139] L55-1-->L59-1: Formula: (and (= v_main_~lk5~0_6 1) (not (= v_main_~p5~0_4 0))) InVars {main_~p5~0=v_main_~p5~0_4} OutVars{main_~p5~0=v_main_~p5~0_4, main_~lk5~0=v_main_~lk5~0_6} AuxVars[] AssignedVars[main_~lk5~0] {3697#(= main_~lk4~0 1)} is VALID [2022-04-28 02:02:36,268 INFO L290 TraceCheckUtils]: 13: Hoare triple {3697#(= main_~lk4~0 1)} [142] L59-1-->L65-1: Formula: (= v_main_~p1~0_5 0) InVars {main_~p1~0=v_main_~p1~0_5} OutVars{main_~p1~0=v_main_~p1~0_5} AuxVars[] AssignedVars[] {3697#(= main_~lk4~0 1)} is VALID [2022-04-28 02:02:36,268 INFO L290 TraceCheckUtils]: 14: Hoare triple {3697#(= main_~lk4~0 1)} [146] L65-1-->L70-1: Formula: (= v_main_~p2~0_3 0) InVars {main_~p2~0=v_main_~p2~0_3} OutVars{main_~p2~0=v_main_~p2~0_3} AuxVars[] AssignedVars[] {3697#(= main_~lk4~0 1)} is VALID [2022-04-28 02:02:36,268 INFO L290 TraceCheckUtils]: 15: Hoare triple {3697#(= main_~lk4~0 1)} [152] L70-1-->L75-1: Formula: (= v_main_~p3~0_3 0) InVars {main_~p3~0=v_main_~p3~0_3} OutVars{main_~p3~0=v_main_~p3~0_3} AuxVars[] AssignedVars[] {3697#(= main_~lk4~0 1)} is VALID [2022-04-28 02:02:36,269 INFO L290 TraceCheckUtils]: 16: Hoare triple {3697#(= main_~lk4~0 1)} [155] L75-1-->L81: Formula: (not (= v_main_~p4~0_2 0)) InVars {main_~p4~0=v_main_~p4~0_2} OutVars{main_~p4~0=v_main_~p4~0_2} AuxVars[] AssignedVars[] {3697#(= main_~lk4~0 1)} is VALID [2022-04-28 02:02:36,269 INFO L290 TraceCheckUtils]: 17: Hoare triple {3697#(= main_~lk4~0 1)} [157] L81-->L86-1: Formula: (not (= v_main_~lk4~0_3 1)) InVars {main_~lk4~0=v_main_~lk4~0_3} OutVars{main_~lk4~0=v_main_~lk4~0_3} AuxVars[] AssignedVars[] {3693#false} is VALID [2022-04-28 02:02:36,269 INFO L290 TraceCheckUtils]: 18: Hoare triple {3693#false} [147] L86-1-->mainErr0ASSERT_VIOLATIONERROR_FUNCTION: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {3693#false} is VALID [2022-04-28 02:02:36,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-28 02:02:36,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-28 02:02:36,269 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488158923] [2022-04-28 02:02:36,269 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [488158923] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-28 02:02:36,269 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-28 02:02:36,269 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-04-28 02:02:36,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231619942] [2022-04-28 02:02:36,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-28 02:02:36,270 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 3 states have internal predecessors, (16), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 19 [2022-04-28 02:02:36,270 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-28 02:02:36,270 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 4 states, 4 states have (on average 4.0) internal successors, (16), 3 states have internal predecessors, (16), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 02:02:36,280 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 19 edges. 19 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-28 02:02:36,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-04-28 02:02:36,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-28 02:02:36,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-04-28 02:02:36,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-04-28 02:02:36,280 INFO L87 Difference]: Start difference. First operand 141 states and 195 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 3 states have internal predecessors, (16), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 02:02:36,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 02:02:36,361 INFO L93 Difference]: Finished difference Result 237 states and 329 transitions. [2022-04-28 02:02:36,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-04-28 02:02:36,361 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 3 states have internal predecessors, (16), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 19 [2022-04-28 02:02:36,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-28 02:02:36,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 3 states have internal predecessors, (16), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 02:02:36,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 59 transitions. [2022-04-28 02:02:36,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 3 states have internal predecessors, (16), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 02:02:36,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 59 transitions. [2022-04-28 02:02:36,363 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 4 states and 59 transitions. [2022-04-28 02:02:36,395 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 59 edges. 59 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-28 02:02:36,398 INFO L225 Difference]: With dead ends: 237 [2022-04-28 02:02:36,398 INFO L226 Difference]: Without dead ends: 235 [2022-04-28 02:02:36,399 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-04-28 02:02:36,399 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 62 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-28 02:02:36,399 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 45 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-28 02:02:36,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2022-04-28 02:02:36,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 201. [2022-04-28 02:02:36,404 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-28 02:02:36,404 INFO L82 GeneralOperation]: Start isEquivalent. First operand 235 states. Second operand has 201 states, 197 states have (on average 1.3604060913705585) internal successors, (268), 197 states have internal predecessors, (268), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 02:02:36,404 INFO L74 IsIncluded]: Start isIncluded. First operand 235 states. Second operand has 201 states, 197 states have (on average 1.3604060913705585) internal successors, (268), 197 states have internal predecessors, (268), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 02:02:36,405 INFO L87 Difference]: Start difference. First operand 235 states. Second operand has 201 states, 197 states have (on average 1.3604060913705585) internal successors, (268), 197 states have internal predecessors, (268), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 02:02:36,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 02:02:36,408 INFO L93 Difference]: Finished difference Result 235 states and 320 transitions. [2022-04-28 02:02:36,408 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 320 transitions. [2022-04-28 02:02:36,409 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-28 02:02:36,409 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-28 02:02:36,409 INFO L74 IsIncluded]: Start isIncluded. First operand has 201 states, 197 states have (on average 1.3604060913705585) internal successors, (268), 197 states have internal predecessors, (268), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Second operand 235 states. [2022-04-28 02:02:36,409 INFO L87 Difference]: Start difference. First operand has 201 states, 197 states have (on average 1.3604060913705585) internal successors, (268), 197 states have internal predecessors, (268), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Second operand 235 states. [2022-04-28 02:02:36,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 02:02:36,413 INFO L93 Difference]: Finished difference Result 235 states and 320 transitions. [2022-04-28 02:02:36,413 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 320 transitions. [2022-04-28 02:02:36,413 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-28 02:02:36,413 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-28 02:02:36,413 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-28 02:02:36,413 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-28 02:02:36,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 201 states, 197 states have (on average 1.3604060913705585) internal successors, (268), 197 states have internal predecessors, (268), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 02:02:36,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 271 transitions. [2022-04-28 02:02:36,417 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 271 transitions. Word has length 19 [2022-04-28 02:02:36,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-28 02:02:36,417 INFO L495 AbstractCegarLoop]: Abstraction has 201 states and 271 transitions. [2022-04-28 02:02:36,417 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 3 states have internal predecessors, (16), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 02:02:36,417 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 271 transitions. [2022-04-28 02:02:36,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-04-28 02:02:36,417 INFO L187 NwaCegarLoop]: Found error trace [2022-04-28 02:02:36,417 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-28 02:02:36,417 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-04-28 02:02:36,417 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-28 02:02:36,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-28 02:02:36,418 INFO L85 PathProgramCache]: Analyzing trace with hash 58363411, now seen corresponding path program 1 times [2022-04-28 02:02:36,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-28 02:02:36,418 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [719446766] [2022-04-28 02:02:36,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-28 02:02:36,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-28 02:02:36,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-28 02:02:36,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-28 02:02:36,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-28 02:02:36,456 INFO L290 TraceCheckUtils]: 0: Hoare triple {4656#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} [120] ULTIMATE.initENTRY-->ULTIMATE.initFINAL: Formula: (let ((.cse0 (select |v_#memory_int_1| 1))) (and (= (select |v_#length_1| 2) 15) (= 48 (select .cse0 0)) (= (select |v_#valid_1| 2) 1) (= (select |v_#valid_1| 0) 0) (< 0 |v_#StackHeapBarrier_1|) (= |v_#NULL.base_1| 0) (= 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] {4650#true} is VALID [2022-04-28 02:02:36,456 INFO L290 TraceCheckUtils]: 1: Hoare triple {4650#true} [123] ULTIMATE.initFINAL-->ULTIMATE.initEXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {4650#true} is VALID [2022-04-28 02:02:36,456 INFO L284 TraceCheckUtils]: 2: Hoare quadruple {4650#true} {4650#true} [163] ULTIMATE.initEXIT-->L-1: AOR: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] LVA: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {4650#true} is VALID [2022-04-28 02:02:36,457 INFO L272 TraceCheckUtils]: 0: Hoare triple {4650#true} [118] ULTIMATE.startENTRY-->ULTIMATE.initENTRY: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {4656#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} is VALID [2022-04-28 02:02:36,457 INFO L290 TraceCheckUtils]: 1: Hoare triple {4656#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} [120] ULTIMATE.initENTRY-->ULTIMATE.initFINAL: Formula: (let ((.cse0 (select |v_#memory_int_1| 1))) (and (= (select |v_#length_1| 2) 15) (= 48 (select .cse0 0)) (= (select |v_#valid_1| 2) 1) (= (select |v_#valid_1| 0) 0) (< 0 |v_#StackHeapBarrier_1|) (= |v_#NULL.base_1| 0) (= 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] {4650#true} is VALID [2022-04-28 02:02:36,457 INFO L290 TraceCheckUtils]: 2: Hoare triple {4650#true} [123] ULTIMATE.initFINAL-->ULTIMATE.initEXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {4650#true} is VALID [2022-04-28 02:02:36,457 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {4650#true} {4650#true} [163] ULTIMATE.initEXIT-->L-1: AOR: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] LVA: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {4650#true} is VALID [2022-04-28 02:02:36,457 INFO L272 TraceCheckUtils]: 4: Hoare triple {4650#true} [119] L-1-->mainENTRY: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {4650#true} is VALID [2022-04-28 02:02:36,457 INFO L290 TraceCheckUtils]: 5: Hoare triple {4650#true} [122] mainENTRY-->L85-1: Formula: (and (= v_main_~p4~0_1 |v_main_#t~nondet7_2|) (<= |v_main_#t~nondet8_2| 2147483647) (<= |v_main_#t~nondet5_2| 2147483647) (<= 0 (+ |v_main_#t~nondet8_2| 2147483648)) (<= |v_main_#t~nondet6_2| 2147483647) (= v_main_~p1~0_1 |v_main_#t~nondet4_2|) (= v_main_~p2~0_2 |v_main_#t~nondet5_2|) (= v_main_~p5~0_1 |v_main_#t~nondet8_2|) (<= 0 (+ |v_main_#t~nondet4_2| 2147483648)) (<= 0 (+ |v_main_#t~nondet7_2| 2147483648)) (= v_main_~p3~0_1 |v_main_#t~nondet6_2|) (<= |v_main_#t~nondet4_2| 2147483647) (<= 0 (+ |v_main_#t~nondet6_2| 2147483648)) (<= 0 (+ |v_main_#t~nondet5_2| 2147483648)) (<= |v_main_#t~nondet7_2| 2147483647)) InVars {main_#t~nondet5=|v_main_#t~nondet5_2|, main_#t~nondet4=|v_main_#t~nondet4_2|, main_#t~nondet7=|v_main_#t~nondet7_2|, main_#t~nondet6=|v_main_#t~nondet6_2|, main_#t~nondet8=|v_main_#t~nondet8_2|} OutVars{main_~p5~0=v_main_~p5~0_1, main_~lk2~0=v_main_~lk2~0_4, main_~lk3~0=v_main_~lk3~0_1, main_~p1~0=v_main_~p1~0_1, main_~lk1~0=v_main_~lk1~0_1, main_~lk5~0=v_main_~lk5~0_1, main_~lk4~0=v_main_~lk4~0_1, main_~p3~0=v_main_~p3~0_1, main_~p2~0=v_main_~p2~0_2, main_~p4~0=v_main_~p4~0_1, main_~cond~0=v_main_~cond~0_1} AuxVars[] AssignedVars[main_#t~nondet5, main_#t~nondet4, main_#t~nondet7, main_~lk3~0, main_#t~nondet6, main_~p1~0, main_~lk1~0, main_~lk5~0, main_~p2~0, main_~p4~0, main_#t~nondet8, main_~cond~0, main_~p5~0, main_~lk2~0, main_~lk4~0, main_~p3~0] {4650#true} is VALID [2022-04-28 02:02:36,457 INFO L290 TraceCheckUtils]: 6: Hoare triple {4650#true} [126] L85-1-->L28: Formula: (and (= |v_main_#t~nondet9_2| v_main_~cond~0_2) (<= 0 (+ |v_main_#t~nondet9_2| 2147483648)) (<= |v_main_#t~nondet9_2| 2147483647)) InVars {main_#t~nondet9=|v_main_#t~nondet9_2|} OutVars{main_~cond~0=v_main_~cond~0_2} AuxVars[] AssignedVars[main_#t~nondet9, main_~cond~0] {4650#true} is VALID [2022-04-28 02:02:36,457 INFO L290 TraceCheckUtils]: 7: Hoare triple {4650#true} [129] L28-->L43: Formula: (and (= v_main_~lk4~0_2 0) (= v_main_~lk1~0_2 0) (= v_main_~lk3~0_5 0) (= v_main_~lk2~0_5 0) (not (= 0 v_main_~cond~0_4)) (= v_main_~lk5~0_2 0)) InVars {main_~cond~0=v_main_~cond~0_4} OutVars{main_~lk2~0=v_main_~lk2~0_5, main_~lk3~0=v_main_~lk3~0_5, main_~lk1~0=v_main_~lk1~0_2, main_~lk5~0=v_main_~lk5~0_2, main_~lk4~0=v_main_~lk4~0_2, main_~cond~0=v_main_~cond~0_4} AuxVars[] AssignedVars[main_~lk2~0, main_~lk3~0, main_~lk1~0, main_~lk5~0, main_~lk4~0] {4650#true} is VALID [2022-04-28 02:02:36,458 INFO L290 TraceCheckUtils]: 8: Hoare triple {4650#true} [132] L43-->L43-2: Formula: (= v_main_~p1~0_3 0) InVars {main_~p1~0=v_main_~p1~0_3} OutVars{main_~p1~0=v_main_~p1~0_3} AuxVars[] AssignedVars[] {4650#true} is VALID [2022-04-28 02:02:36,458 INFO L290 TraceCheckUtils]: 9: Hoare triple {4650#true} [134] L43-2-->L47-1: Formula: (= v_main_~p2~0_5 0) InVars {main_~p2~0=v_main_~p2~0_5} OutVars{main_~p2~0=v_main_~p2~0_5} AuxVars[] AssignedVars[] {4650#true} is VALID [2022-04-28 02:02:36,458 INFO L290 TraceCheckUtils]: 10: Hoare triple {4650#true} [136] L47-1-->L51-1: Formula: (= v_main_~p3~0_5 0) InVars {main_~p3~0=v_main_~p3~0_5} OutVars{main_~p3~0=v_main_~p3~0_5} AuxVars[] AssignedVars[] {4650#true} is VALID [2022-04-28 02:02:36,458 INFO L290 TraceCheckUtils]: 11: Hoare triple {4650#true} [138] L51-1-->L55-1: Formula: (= v_main_~p4~0_5 0) InVars {main_~p4~0=v_main_~p4~0_5} OutVars{main_~p4~0=v_main_~p4~0_5} AuxVars[] AssignedVars[] {4655#(= main_~p4~0 0)} is VALID [2022-04-28 02:02:36,458 INFO L290 TraceCheckUtils]: 12: Hoare triple {4655#(= main_~p4~0 0)} [139] L55-1-->L59-1: Formula: (and (= v_main_~lk5~0_6 1) (not (= v_main_~p5~0_4 0))) InVars {main_~p5~0=v_main_~p5~0_4} OutVars{main_~p5~0=v_main_~p5~0_4, main_~lk5~0=v_main_~lk5~0_6} AuxVars[] AssignedVars[main_~lk5~0] {4655#(= main_~p4~0 0)} is VALID [2022-04-28 02:02:36,459 INFO L290 TraceCheckUtils]: 13: Hoare triple {4655#(= main_~p4~0 0)} [142] L59-1-->L65-1: Formula: (= v_main_~p1~0_5 0) InVars {main_~p1~0=v_main_~p1~0_5} OutVars{main_~p1~0=v_main_~p1~0_5} AuxVars[] AssignedVars[] {4655#(= main_~p4~0 0)} is VALID [2022-04-28 02:02:36,459 INFO L290 TraceCheckUtils]: 14: Hoare triple {4655#(= main_~p4~0 0)} [146] L65-1-->L70-1: Formula: (= v_main_~p2~0_3 0) InVars {main_~p2~0=v_main_~p2~0_3} OutVars{main_~p2~0=v_main_~p2~0_3} AuxVars[] AssignedVars[] {4655#(= main_~p4~0 0)} is VALID [2022-04-28 02:02:36,459 INFO L290 TraceCheckUtils]: 15: Hoare triple {4655#(= main_~p4~0 0)} [152] L70-1-->L75-1: Formula: (= v_main_~p3~0_3 0) InVars {main_~p3~0=v_main_~p3~0_3} OutVars{main_~p3~0=v_main_~p3~0_3} AuxVars[] AssignedVars[] {4655#(= main_~p4~0 0)} is VALID [2022-04-28 02:02:36,459 INFO L290 TraceCheckUtils]: 16: Hoare triple {4655#(= main_~p4~0 0)} [155] L75-1-->L81: Formula: (not (= v_main_~p4~0_2 0)) InVars {main_~p4~0=v_main_~p4~0_2} OutVars{main_~p4~0=v_main_~p4~0_2} AuxVars[] AssignedVars[] {4651#false} is VALID [2022-04-28 02:02:36,459 INFO L290 TraceCheckUtils]: 17: Hoare triple {4651#false} [157] L81-->L86-1: Formula: (not (= v_main_~lk4~0_3 1)) InVars {main_~lk4~0=v_main_~lk4~0_3} OutVars{main_~lk4~0=v_main_~lk4~0_3} AuxVars[] AssignedVars[] {4651#false} is VALID [2022-04-28 02:02:36,460 INFO L290 TraceCheckUtils]: 18: Hoare triple {4651#false} [147] L86-1-->mainErr0ASSERT_VIOLATIONERROR_FUNCTION: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {4651#false} is VALID [2022-04-28 02:02:36,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-28 02:02:36,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-28 02:02:36,460 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [719446766] [2022-04-28 02:02:36,460 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [719446766] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-28 02:02:36,460 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-28 02:02:36,460 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-04-28 02:02:36,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74082725] [2022-04-28 02:02:36,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-28 02:02:36,460 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 3 states have internal predecessors, (16), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 19 [2022-04-28 02:02:36,461 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-28 02:02:36,461 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 4 states, 4 states have (on average 4.0) internal successors, (16), 3 states have internal predecessors, (16), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 02:02:36,470 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 19 edges. 19 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-28 02:02:36,470 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-04-28 02:02:36,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-28 02:02:36,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-04-28 02:02:36,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-04-28 02:02:36,470 INFO L87 Difference]: Start difference. First operand 201 states and 271 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 3 states have internal predecessors, (16), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 02:02:36,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 02:02:36,542 INFO L93 Difference]: Finished difference Result 445 states and 593 transitions. [2022-04-28 02:02:36,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-04-28 02:02:36,543 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 3 states have internal predecessors, (16), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 19 [2022-04-28 02:02:36,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-28 02:02:36,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 3 states have internal predecessors, (16), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 02:02:36,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 93 transitions. [2022-04-28 02:02:36,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 3 states have internal predecessors, (16), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 02:02:36,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 93 transitions. [2022-04-28 02:02:36,545 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 4 states and 93 transitions. [2022-04-28 02:02:36,593 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 93 edges. 93 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-28 02:02:36,597 INFO L225 Difference]: With dead ends: 445 [2022-04-28 02:02:36,597 INFO L226 Difference]: Without dead ends: 259 [2022-04-28 02:02:36,598 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-04-28 02:02:36,599 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 55 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-28 02:02:36,599 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 61 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-28 02:02:36,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2022-04-28 02:02:36,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 257. [2022-04-28 02:02:36,605 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-28 02:02:36,606 INFO L82 GeneralOperation]: Start isEquivalent. First operand 259 states. Second operand has 257 states, 253 states have (on average 1.2806324110671936) internal successors, (324), 253 states have internal predecessors, (324), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 02:02:36,606 INFO L74 IsIncluded]: Start isIncluded. First operand 259 states. Second operand has 257 states, 253 states have (on average 1.2806324110671936) internal successors, (324), 253 states have internal predecessors, (324), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 02:02:36,616 INFO L87 Difference]: Start difference. First operand 259 states. Second operand has 257 states, 253 states have (on average 1.2806324110671936) internal successors, (324), 253 states have internal predecessors, (324), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 02:02:36,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 02:02:36,620 INFO L93 Difference]: Finished difference Result 259 states and 328 transitions. [2022-04-28 02:02:36,620 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 328 transitions. [2022-04-28 02:02:36,621 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-28 02:02:36,621 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-28 02:02:36,622 INFO L74 IsIncluded]: Start isIncluded. First operand has 257 states, 253 states have (on average 1.2806324110671936) internal successors, (324), 253 states have internal predecessors, (324), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Second operand 259 states. [2022-04-28 02:02:36,622 INFO L87 Difference]: Start difference. First operand has 257 states, 253 states have (on average 1.2806324110671936) internal successors, (324), 253 states have internal predecessors, (324), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Second operand 259 states. [2022-04-28 02:02:36,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 02:02:36,626 INFO L93 Difference]: Finished difference Result 259 states and 328 transitions. [2022-04-28 02:02:36,626 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 328 transitions. [2022-04-28 02:02:36,626 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-28 02:02:36,626 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-28 02:02:36,627 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-28 02:02:36,627 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-28 02:02:36,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 257 states, 253 states have (on average 1.2806324110671936) internal successors, (324), 253 states have internal predecessors, (324), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 02:02:36,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 327 transitions. [2022-04-28 02:02:36,639 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 327 transitions. Word has length 19 [2022-04-28 02:02:36,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-28 02:02:36,639 INFO L495 AbstractCegarLoop]: Abstraction has 257 states and 327 transitions. [2022-04-28 02:02:36,639 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 3 states have internal predecessors, (16), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 02:02:36,639 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 327 transitions. [2022-04-28 02:02:36,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-04-28 02:02:36,639 INFO L187 NwaCegarLoop]: Found error trace [2022-04-28 02:02:36,639 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-28 02:02:36,639 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-04-28 02:02:36,640 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-28 02:02:36,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-28 02:02:36,640 INFO L85 PathProgramCache]: Analyzing trace with hash -678214798, now seen corresponding path program 1 times [2022-04-28 02:02:36,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-28 02:02:36,640 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862008534] [2022-04-28 02:02:36,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-28 02:02:36,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-28 02:02:36,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-28 02:02:36,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-28 02:02:36,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-28 02:02:36,673 INFO L290 TraceCheckUtils]: 0: Hoare triple {5942#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} [120] ULTIMATE.initENTRY-->ULTIMATE.initFINAL: Formula: (let ((.cse0 (select |v_#memory_int_1| 1))) (and (= (select |v_#length_1| 2) 15) (= 48 (select .cse0 0)) (= (select |v_#valid_1| 2) 1) (= (select |v_#valid_1| 0) 0) (< 0 |v_#StackHeapBarrier_1|) (= |v_#NULL.base_1| 0) (= 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] {5936#true} is VALID [2022-04-28 02:02:36,674 INFO L290 TraceCheckUtils]: 1: Hoare triple {5936#true} [123] ULTIMATE.initFINAL-->ULTIMATE.initEXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {5936#true} is VALID [2022-04-28 02:02:36,674 INFO L284 TraceCheckUtils]: 2: Hoare quadruple {5936#true} {5936#true} [163] ULTIMATE.initEXIT-->L-1: AOR: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] LVA: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {5936#true} is VALID [2022-04-28 02:02:36,674 INFO L272 TraceCheckUtils]: 0: Hoare triple {5936#true} [118] ULTIMATE.startENTRY-->ULTIMATE.initENTRY: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {5942#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} is VALID [2022-04-28 02:02:36,674 INFO L290 TraceCheckUtils]: 1: Hoare triple {5942#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} [120] ULTIMATE.initENTRY-->ULTIMATE.initFINAL: Formula: (let ((.cse0 (select |v_#memory_int_1| 1))) (and (= (select |v_#length_1| 2) 15) (= 48 (select .cse0 0)) (= (select |v_#valid_1| 2) 1) (= (select |v_#valid_1| 0) 0) (< 0 |v_#StackHeapBarrier_1|) (= |v_#NULL.base_1| 0) (= 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] {5936#true} is VALID [2022-04-28 02:02:36,675 INFO L290 TraceCheckUtils]: 2: Hoare triple {5936#true} [123] ULTIMATE.initFINAL-->ULTIMATE.initEXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {5936#true} is VALID [2022-04-28 02:02:36,675 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {5936#true} {5936#true} [163] ULTIMATE.initEXIT-->L-1: AOR: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] LVA: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {5936#true} is VALID [2022-04-28 02:02:36,675 INFO L272 TraceCheckUtils]: 4: Hoare triple {5936#true} [119] L-1-->mainENTRY: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {5936#true} is VALID [2022-04-28 02:02:36,675 INFO L290 TraceCheckUtils]: 5: Hoare triple {5936#true} [122] mainENTRY-->L85-1: Formula: (and (= v_main_~p4~0_1 |v_main_#t~nondet7_2|) (<= |v_main_#t~nondet8_2| 2147483647) (<= |v_main_#t~nondet5_2| 2147483647) (<= 0 (+ |v_main_#t~nondet8_2| 2147483648)) (<= |v_main_#t~nondet6_2| 2147483647) (= v_main_~p1~0_1 |v_main_#t~nondet4_2|) (= v_main_~p2~0_2 |v_main_#t~nondet5_2|) (= v_main_~p5~0_1 |v_main_#t~nondet8_2|) (<= 0 (+ |v_main_#t~nondet4_2| 2147483648)) (<= 0 (+ |v_main_#t~nondet7_2| 2147483648)) (= v_main_~p3~0_1 |v_main_#t~nondet6_2|) (<= |v_main_#t~nondet4_2| 2147483647) (<= 0 (+ |v_main_#t~nondet6_2| 2147483648)) (<= 0 (+ |v_main_#t~nondet5_2| 2147483648)) (<= |v_main_#t~nondet7_2| 2147483647)) InVars {main_#t~nondet5=|v_main_#t~nondet5_2|, main_#t~nondet4=|v_main_#t~nondet4_2|, main_#t~nondet7=|v_main_#t~nondet7_2|, main_#t~nondet6=|v_main_#t~nondet6_2|, main_#t~nondet8=|v_main_#t~nondet8_2|} OutVars{main_~p5~0=v_main_~p5~0_1, main_~lk2~0=v_main_~lk2~0_4, main_~lk3~0=v_main_~lk3~0_1, main_~p1~0=v_main_~p1~0_1, main_~lk1~0=v_main_~lk1~0_1, main_~lk5~0=v_main_~lk5~0_1, main_~lk4~0=v_main_~lk4~0_1, main_~p3~0=v_main_~p3~0_1, main_~p2~0=v_main_~p2~0_2, main_~p4~0=v_main_~p4~0_1, main_~cond~0=v_main_~cond~0_1} AuxVars[] AssignedVars[main_#t~nondet5, main_#t~nondet4, main_#t~nondet7, main_~lk3~0, main_#t~nondet6, main_~p1~0, main_~lk1~0, main_~lk5~0, main_~p2~0, main_~p4~0, main_#t~nondet8, main_~cond~0, main_~p5~0, main_~lk2~0, main_~lk4~0, main_~p3~0] {5936#true} is VALID [2022-04-28 02:02:36,675 INFO L290 TraceCheckUtils]: 6: Hoare triple {5936#true} [126] L85-1-->L28: Formula: (and (= |v_main_#t~nondet9_2| v_main_~cond~0_2) (<= 0 (+ |v_main_#t~nondet9_2| 2147483648)) (<= |v_main_#t~nondet9_2| 2147483647)) InVars {main_#t~nondet9=|v_main_#t~nondet9_2|} OutVars{main_~cond~0=v_main_~cond~0_2} AuxVars[] AssignedVars[main_#t~nondet9, main_~cond~0] {5936#true} is VALID [2022-04-28 02:02:36,675 INFO L290 TraceCheckUtils]: 7: Hoare triple {5936#true} [129] L28-->L43: Formula: (and (= v_main_~lk4~0_2 0) (= v_main_~lk1~0_2 0) (= v_main_~lk3~0_5 0) (= v_main_~lk2~0_5 0) (not (= 0 v_main_~cond~0_4)) (= v_main_~lk5~0_2 0)) InVars {main_~cond~0=v_main_~cond~0_4} OutVars{main_~lk2~0=v_main_~lk2~0_5, main_~lk3~0=v_main_~lk3~0_5, main_~lk1~0=v_main_~lk1~0_2, main_~lk5~0=v_main_~lk5~0_2, main_~lk4~0=v_main_~lk4~0_2, main_~cond~0=v_main_~cond~0_4} AuxVars[] AssignedVars[main_~lk2~0, main_~lk3~0, main_~lk1~0, main_~lk5~0, main_~lk4~0] {5936#true} is VALID [2022-04-28 02:02:36,675 INFO L290 TraceCheckUtils]: 8: Hoare triple {5936#true} [132] L43-->L43-2: Formula: (= v_main_~p1~0_3 0) InVars {main_~p1~0=v_main_~p1~0_3} OutVars{main_~p1~0=v_main_~p1~0_3} AuxVars[] AssignedVars[] {5936#true} is VALID [2022-04-28 02:02:36,675 INFO L290 TraceCheckUtils]: 9: Hoare triple {5936#true} [134] L43-2-->L47-1: Formula: (= v_main_~p2~0_5 0) InVars {main_~p2~0=v_main_~p2~0_5} OutVars{main_~p2~0=v_main_~p2~0_5} AuxVars[] AssignedVars[] {5936#true} is VALID [2022-04-28 02:02:36,675 INFO L290 TraceCheckUtils]: 10: Hoare triple {5936#true} [136] L47-1-->L51-1: Formula: (= v_main_~p3~0_5 0) InVars {main_~p3~0=v_main_~p3~0_5} OutVars{main_~p3~0=v_main_~p3~0_5} AuxVars[] AssignedVars[] {5936#true} is VALID [2022-04-28 02:02:36,676 INFO L290 TraceCheckUtils]: 11: Hoare triple {5936#true} [137] L51-1-->L55-1: Formula: (and (not (= v_main_~p4~0_4 0)) (= v_main_~lk4~0_6 1)) InVars {main_~p4~0=v_main_~p4~0_4} OutVars{main_~p4~0=v_main_~p4~0_4, main_~lk4~0=v_main_~lk4~0_6} AuxVars[] AssignedVars[main_~lk4~0] {5941#(not (= main_~p4~0 0))} is VALID [2022-04-28 02:02:36,676 INFO L290 TraceCheckUtils]: 12: Hoare triple {5941#(not (= main_~p4~0 0))} [139] L55-1-->L59-1: Formula: (and (= v_main_~lk5~0_6 1) (not (= v_main_~p5~0_4 0))) InVars {main_~p5~0=v_main_~p5~0_4} OutVars{main_~p5~0=v_main_~p5~0_4, main_~lk5~0=v_main_~lk5~0_6} AuxVars[] AssignedVars[main_~lk5~0] {5941#(not (= main_~p4~0 0))} is VALID [2022-04-28 02:02:36,677 INFO L290 TraceCheckUtils]: 13: Hoare triple {5941#(not (= main_~p4~0 0))} [142] L59-1-->L65-1: Formula: (= v_main_~p1~0_5 0) InVars {main_~p1~0=v_main_~p1~0_5} OutVars{main_~p1~0=v_main_~p1~0_5} AuxVars[] AssignedVars[] {5941#(not (= main_~p4~0 0))} is VALID [2022-04-28 02:02:36,677 INFO L290 TraceCheckUtils]: 14: Hoare triple {5941#(not (= main_~p4~0 0))} [146] L65-1-->L70-1: Formula: (= v_main_~p2~0_3 0) InVars {main_~p2~0=v_main_~p2~0_3} OutVars{main_~p2~0=v_main_~p2~0_3} AuxVars[] AssignedVars[] {5941#(not (= main_~p4~0 0))} is VALID [2022-04-28 02:02:36,678 INFO L290 TraceCheckUtils]: 15: Hoare triple {5941#(not (= main_~p4~0 0))} [152] L70-1-->L75-1: Formula: (= v_main_~p3~0_3 0) InVars {main_~p3~0=v_main_~p3~0_3} OutVars{main_~p3~0=v_main_~p3~0_3} AuxVars[] AssignedVars[] {5941#(not (= main_~p4~0 0))} is VALID [2022-04-28 02:02:36,680 INFO L290 TraceCheckUtils]: 16: Hoare triple {5941#(not (= main_~p4~0 0))} [156] L75-1-->L80-1: Formula: (= v_main_~p4~0_3 0) InVars {main_~p4~0=v_main_~p4~0_3} OutVars{main_~p4~0=v_main_~p4~0_3} AuxVars[] AssignedVars[] {5937#false} is VALID [2022-04-28 02:02:36,681 INFO L290 TraceCheckUtils]: 17: Hoare triple {5937#false} [159] L80-1-->L86: Formula: (not (= v_main_~p5~0_2 0)) InVars {main_~p5~0=v_main_~p5~0_2} OutVars{main_~p5~0=v_main_~p5~0_2} AuxVars[] AssignedVars[] {5937#false} is VALID [2022-04-28 02:02:36,687 INFO L290 TraceCheckUtils]: 18: Hoare triple {5937#false} [161] L86-->L86-1: Formula: (not (= v_main_~lk5~0_3 1)) InVars {main_~lk5~0=v_main_~lk5~0_3} OutVars{main_~lk5~0=v_main_~lk5~0_3} AuxVars[] AssignedVars[] {5937#false} is VALID [2022-04-28 02:02:36,687 INFO L290 TraceCheckUtils]: 19: Hoare triple {5937#false} [147] L86-1-->mainErr0ASSERT_VIOLATIONERROR_FUNCTION: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {5937#false} is VALID [2022-04-28 02:02:36,687 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-28 02:02:36,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-28 02:02:36,688 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862008534] [2022-04-28 02:02:36,688 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [862008534] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-28 02:02:36,688 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-28 02:02:36,688 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-04-28 02:02:36,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262512712] [2022-04-28 02:02:36,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-28 02:02:36,688 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 20 [2022-04-28 02:02:36,688 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-28 02:02:36,688 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 4 states, 4 states have (on average 4.25) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 02:02:36,699 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 20 edges. 20 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-28 02:02:36,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-04-28 02:02:36,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-28 02:02:36,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-04-28 02:02:36,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-04-28 02:02:36,700 INFO L87 Difference]: Start difference. First operand 257 states and 327 transitions. Second operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 02:02:36,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 02:02:36,771 INFO L93 Difference]: Finished difference Result 385 states and 485 transitions. [2022-04-28 02:02:36,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-04-28 02:02:36,771 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 20 [2022-04-28 02:02:36,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-28 02:02:36,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 02:02:36,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 88 transitions. [2022-04-28 02:02:36,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 02:02:36,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 88 transitions. [2022-04-28 02:02:36,774 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 4 states and 88 transitions. [2022-04-28 02:02:36,819 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 88 edges. 88 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-28 02:02:36,823 INFO L225 Difference]: With dead ends: 385 [2022-04-28 02:02:36,823 INFO L226 Difference]: Without dead ends: 267 [2022-04-28 02:02:36,824 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-04-28 02:02:36,824 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 63 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-28 02:02:36,825 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 54 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-28 02:02:36,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2022-04-28 02:02:36,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 265. [2022-04-28 02:02:36,830 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-28 02:02:36,830 INFO L82 GeneralOperation]: Start isEquivalent. First operand 267 states. Second operand has 265 states, 261 states have (on average 1.2413793103448276) internal successors, (324), 261 states have internal predecessors, (324), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 02:02:36,830 INFO L74 IsIncluded]: Start isIncluded. First operand 267 states. Second operand has 265 states, 261 states have (on average 1.2413793103448276) internal successors, (324), 261 states have internal predecessors, (324), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 02:02:36,830 INFO L87 Difference]: Start difference. First operand 267 states. Second operand has 265 states, 261 states have (on average 1.2413793103448276) internal successors, (324), 261 states have internal predecessors, (324), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 02:02:36,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 02:02:36,835 INFO L93 Difference]: Finished difference Result 267 states and 328 transitions. [2022-04-28 02:02:36,835 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 328 transitions. [2022-04-28 02:02:36,835 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-28 02:02:36,835 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-28 02:02:36,835 INFO L74 IsIncluded]: Start isIncluded. First operand has 265 states, 261 states have (on average 1.2413793103448276) internal successors, (324), 261 states have internal predecessors, (324), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Second operand 267 states. [2022-04-28 02:02:36,835 INFO L87 Difference]: Start difference. First operand has 265 states, 261 states have (on average 1.2413793103448276) internal successors, (324), 261 states have internal predecessors, (324), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Second operand 267 states. [2022-04-28 02:02:36,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 02:02:36,840 INFO L93 Difference]: Finished difference Result 267 states and 328 transitions. [2022-04-28 02:02:36,840 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 328 transitions. [2022-04-28 02:02:36,840 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-28 02:02:36,840 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-28 02:02:36,840 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-28 02:02:36,840 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-28 02:02:36,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 265 states, 261 states have (on average 1.2413793103448276) internal successors, (324), 261 states have internal predecessors, (324), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 02:02:36,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 327 transitions. [2022-04-28 02:02:36,845 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 327 transitions. Word has length 20 [2022-04-28 02:02:36,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-28 02:02:36,845 INFO L495 AbstractCegarLoop]: Abstraction has 265 states and 327 transitions. [2022-04-28 02:02:36,845 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 02:02:36,846 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 327 transitions. [2022-04-28 02:02:36,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-04-28 02:02:36,846 INFO L187 NwaCegarLoop]: Found error trace [2022-04-28 02:02:36,846 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-28 02:02:36,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-04-28 02:02:36,846 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-28 02:02:36,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-28 02:02:36,846 INFO L85 PathProgramCache]: Analyzing trace with hash 1809298035, now seen corresponding path program 1 times [2022-04-28 02:02:36,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-28 02:02:36,847 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1214377305] [2022-04-28 02:02:36,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-28 02:02:36,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-28 02:02:36,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-28 02:02:36,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-28 02:02:36,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-28 02:02:36,891 INFO L290 TraceCheckUtils]: 0: Hoare triple {7192#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} [120] ULTIMATE.initENTRY-->ULTIMATE.initFINAL: Formula: (let ((.cse0 (select |v_#memory_int_1| 1))) (and (= (select |v_#length_1| 2) 15) (= 48 (select .cse0 0)) (= (select |v_#valid_1| 2) 1) (= (select |v_#valid_1| 0) 0) (< 0 |v_#StackHeapBarrier_1|) (= |v_#NULL.base_1| 0) (= 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] {7186#true} is VALID [2022-04-28 02:02:36,891 INFO L290 TraceCheckUtils]: 1: Hoare triple {7186#true} [123] ULTIMATE.initFINAL-->ULTIMATE.initEXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {7186#true} is VALID [2022-04-28 02:02:36,891 INFO L284 TraceCheckUtils]: 2: Hoare quadruple {7186#true} {7186#true} [163] ULTIMATE.initEXIT-->L-1: AOR: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] LVA: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {7186#true} is VALID [2022-04-28 02:02:36,892 INFO L272 TraceCheckUtils]: 0: Hoare triple {7186#true} [118] ULTIMATE.startENTRY-->ULTIMATE.initENTRY: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {7192#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} is VALID [2022-04-28 02:02:36,892 INFO L290 TraceCheckUtils]: 1: Hoare triple {7192#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} [120] ULTIMATE.initENTRY-->ULTIMATE.initFINAL: Formula: (let ((.cse0 (select |v_#memory_int_1| 1))) (and (= (select |v_#length_1| 2) 15) (= 48 (select .cse0 0)) (= (select |v_#valid_1| 2) 1) (= (select |v_#valid_1| 0) 0) (< 0 |v_#StackHeapBarrier_1|) (= |v_#NULL.base_1| 0) (= 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] {7186#true} is VALID [2022-04-28 02:02:36,892 INFO L290 TraceCheckUtils]: 2: Hoare triple {7186#true} [123] ULTIMATE.initFINAL-->ULTIMATE.initEXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {7186#true} is VALID [2022-04-28 02:02:36,892 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {7186#true} {7186#true} [163] ULTIMATE.initEXIT-->L-1: AOR: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] LVA: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {7186#true} is VALID [2022-04-28 02:02:36,892 INFO L272 TraceCheckUtils]: 4: Hoare triple {7186#true} [119] L-1-->mainENTRY: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {7186#true} is VALID [2022-04-28 02:02:36,892 INFO L290 TraceCheckUtils]: 5: Hoare triple {7186#true} [122] mainENTRY-->L85-1: Formula: (and (= v_main_~p4~0_1 |v_main_#t~nondet7_2|) (<= |v_main_#t~nondet8_2| 2147483647) (<= |v_main_#t~nondet5_2| 2147483647) (<= 0 (+ |v_main_#t~nondet8_2| 2147483648)) (<= |v_main_#t~nondet6_2| 2147483647) (= v_main_~p1~0_1 |v_main_#t~nondet4_2|) (= v_main_~p2~0_2 |v_main_#t~nondet5_2|) (= v_main_~p5~0_1 |v_main_#t~nondet8_2|) (<= 0 (+ |v_main_#t~nondet4_2| 2147483648)) (<= 0 (+ |v_main_#t~nondet7_2| 2147483648)) (= v_main_~p3~0_1 |v_main_#t~nondet6_2|) (<= |v_main_#t~nondet4_2| 2147483647) (<= 0 (+ |v_main_#t~nondet6_2| 2147483648)) (<= 0 (+ |v_main_#t~nondet5_2| 2147483648)) (<= |v_main_#t~nondet7_2| 2147483647)) InVars {main_#t~nondet5=|v_main_#t~nondet5_2|, main_#t~nondet4=|v_main_#t~nondet4_2|, main_#t~nondet7=|v_main_#t~nondet7_2|, main_#t~nondet6=|v_main_#t~nondet6_2|, main_#t~nondet8=|v_main_#t~nondet8_2|} OutVars{main_~p5~0=v_main_~p5~0_1, main_~lk2~0=v_main_~lk2~0_4, main_~lk3~0=v_main_~lk3~0_1, main_~p1~0=v_main_~p1~0_1, main_~lk1~0=v_main_~lk1~0_1, main_~lk5~0=v_main_~lk5~0_1, main_~lk4~0=v_main_~lk4~0_1, main_~p3~0=v_main_~p3~0_1, main_~p2~0=v_main_~p2~0_2, main_~p4~0=v_main_~p4~0_1, main_~cond~0=v_main_~cond~0_1} AuxVars[] AssignedVars[main_#t~nondet5, main_#t~nondet4, main_#t~nondet7, main_~lk3~0, main_#t~nondet6, main_~p1~0, main_~lk1~0, main_~lk5~0, main_~p2~0, main_~p4~0, main_#t~nondet8, main_~cond~0, main_~p5~0, main_~lk2~0, main_~lk4~0, main_~p3~0] {7186#true} is VALID [2022-04-28 02:02:36,892 INFO L290 TraceCheckUtils]: 6: Hoare triple {7186#true} [126] L85-1-->L28: Formula: (and (= |v_main_#t~nondet9_2| v_main_~cond~0_2) (<= 0 (+ |v_main_#t~nondet9_2| 2147483648)) (<= |v_main_#t~nondet9_2| 2147483647)) InVars {main_#t~nondet9=|v_main_#t~nondet9_2|} OutVars{main_~cond~0=v_main_~cond~0_2} AuxVars[] AssignedVars[main_#t~nondet9, main_~cond~0] {7186#true} is VALID [2022-04-28 02:02:36,892 INFO L290 TraceCheckUtils]: 7: Hoare triple {7186#true} [129] L28-->L43: Formula: (and (= v_main_~lk4~0_2 0) (= v_main_~lk1~0_2 0) (= v_main_~lk3~0_5 0) (= v_main_~lk2~0_5 0) (not (= 0 v_main_~cond~0_4)) (= v_main_~lk5~0_2 0)) InVars {main_~cond~0=v_main_~cond~0_4} OutVars{main_~lk2~0=v_main_~lk2~0_5, main_~lk3~0=v_main_~lk3~0_5, main_~lk1~0=v_main_~lk1~0_2, main_~lk5~0=v_main_~lk5~0_2, main_~lk4~0=v_main_~lk4~0_2, main_~cond~0=v_main_~cond~0_4} AuxVars[] AssignedVars[main_~lk2~0, main_~lk3~0, main_~lk1~0, main_~lk5~0, main_~lk4~0] {7186#true} is VALID [2022-04-28 02:02:36,892 INFO L290 TraceCheckUtils]: 8: Hoare triple {7186#true} [132] L43-->L43-2: Formula: (= v_main_~p1~0_3 0) InVars {main_~p1~0=v_main_~p1~0_3} OutVars{main_~p1~0=v_main_~p1~0_3} AuxVars[] AssignedVars[] {7186#true} is VALID [2022-04-28 02:02:36,892 INFO L290 TraceCheckUtils]: 9: Hoare triple {7186#true} [134] L43-2-->L47-1: Formula: (= v_main_~p2~0_5 0) InVars {main_~p2~0=v_main_~p2~0_5} OutVars{main_~p2~0=v_main_~p2~0_5} AuxVars[] AssignedVars[] {7186#true} is VALID [2022-04-28 02:02:36,892 INFO L290 TraceCheckUtils]: 10: Hoare triple {7186#true} [136] L47-1-->L51-1: Formula: (= v_main_~p3~0_5 0) InVars {main_~p3~0=v_main_~p3~0_5} OutVars{main_~p3~0=v_main_~p3~0_5} AuxVars[] AssignedVars[] {7186#true} is VALID [2022-04-28 02:02:36,893 INFO L290 TraceCheckUtils]: 11: Hoare triple {7186#true} [138] L51-1-->L55-1: Formula: (= v_main_~p4~0_5 0) InVars {main_~p4~0=v_main_~p4~0_5} OutVars{main_~p4~0=v_main_~p4~0_5} AuxVars[] AssignedVars[] {7186#true} is VALID [2022-04-28 02:02:36,896 INFO L290 TraceCheckUtils]: 12: Hoare triple {7186#true} [139] L55-1-->L59-1: Formula: (and (= v_main_~lk5~0_6 1) (not (= v_main_~p5~0_4 0))) InVars {main_~p5~0=v_main_~p5~0_4} OutVars{main_~p5~0=v_main_~p5~0_4, main_~lk5~0=v_main_~lk5~0_6} AuxVars[] AssignedVars[main_~lk5~0] {7191#(= main_~lk5~0 1)} is VALID [2022-04-28 02:02:36,896 INFO L290 TraceCheckUtils]: 13: Hoare triple {7191#(= main_~lk5~0 1)} [142] L59-1-->L65-1: Formula: (= v_main_~p1~0_5 0) InVars {main_~p1~0=v_main_~p1~0_5} OutVars{main_~p1~0=v_main_~p1~0_5} AuxVars[] AssignedVars[] {7191#(= main_~lk5~0 1)} is VALID [2022-04-28 02:02:36,896 INFO L290 TraceCheckUtils]: 14: Hoare triple {7191#(= main_~lk5~0 1)} [146] L65-1-->L70-1: Formula: (= v_main_~p2~0_3 0) InVars {main_~p2~0=v_main_~p2~0_3} OutVars{main_~p2~0=v_main_~p2~0_3} AuxVars[] AssignedVars[] {7191#(= main_~lk5~0 1)} is VALID [2022-04-28 02:02:36,897 INFO L290 TraceCheckUtils]: 15: Hoare triple {7191#(= main_~lk5~0 1)} [152] L70-1-->L75-1: Formula: (= v_main_~p3~0_3 0) InVars {main_~p3~0=v_main_~p3~0_3} OutVars{main_~p3~0=v_main_~p3~0_3} AuxVars[] AssignedVars[] {7191#(= main_~lk5~0 1)} is VALID [2022-04-28 02:02:36,897 INFO L290 TraceCheckUtils]: 16: Hoare triple {7191#(= main_~lk5~0 1)} [156] L75-1-->L80-1: Formula: (= v_main_~p4~0_3 0) InVars {main_~p4~0=v_main_~p4~0_3} OutVars{main_~p4~0=v_main_~p4~0_3} AuxVars[] AssignedVars[] {7191#(= main_~lk5~0 1)} is VALID [2022-04-28 02:02:36,897 INFO L290 TraceCheckUtils]: 17: Hoare triple {7191#(= main_~lk5~0 1)} [159] L80-1-->L86: Formula: (not (= v_main_~p5~0_2 0)) InVars {main_~p5~0=v_main_~p5~0_2} OutVars{main_~p5~0=v_main_~p5~0_2} AuxVars[] AssignedVars[] {7191#(= main_~lk5~0 1)} is VALID [2022-04-28 02:02:36,897 INFO L290 TraceCheckUtils]: 18: Hoare triple {7191#(= main_~lk5~0 1)} [161] L86-->L86-1: Formula: (not (= v_main_~lk5~0_3 1)) InVars {main_~lk5~0=v_main_~lk5~0_3} OutVars{main_~lk5~0=v_main_~lk5~0_3} AuxVars[] AssignedVars[] {7187#false} is VALID [2022-04-28 02:02:36,897 INFO L290 TraceCheckUtils]: 19: Hoare triple {7187#false} [147] L86-1-->mainErr0ASSERT_VIOLATIONERROR_FUNCTION: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {7187#false} is VALID [2022-04-28 02:02:36,898 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-28 02:02:36,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-28 02:02:36,898 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1214377305] [2022-04-28 02:02:36,898 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1214377305] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-28 02:02:36,898 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-28 02:02:36,898 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-04-28 02:02:36,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326157634] [2022-04-28 02:02:36,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-28 02:02:36,898 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 20 [2022-04-28 02:02:36,898 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-28 02:02:36,898 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 4 states, 4 states have (on average 4.25) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 02:02:36,909 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 20 edges. 20 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-28 02:02:36,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-04-28 02:02:36,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-28 02:02:36,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-04-28 02:02:36,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-04-28 02:02:36,909 INFO L87 Difference]: Start difference. First operand 265 states and 327 transitions. Second operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 02:02:36,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 02:02:36,980 INFO L93 Difference]: Finished difference Result 427 states and 520 transitions. [2022-04-28 02:02:36,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-04-28 02:02:36,980 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 20 [2022-04-28 02:02:36,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-28 02:02:36,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 02:02:36,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 54 transitions. [2022-04-28 02:02:36,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 02:02:36,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 54 transitions. [2022-04-28 02:02:36,982 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 4 states and 54 transitions. [2022-04-28 02:02:37,012 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 54 edges. 54 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-28 02:02:37,019 INFO L225 Difference]: With dead ends: 427 [2022-04-28 02:02:37,019 INFO L226 Difference]: Without dead ends: 425 [2022-04-28 02:02:37,019 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-04-28 02:02:37,020 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 54 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-28 02:02:37,020 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 43 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-28 02:02:37,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 425 states. [2022-04-28 02:02:37,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 425 to 393. [2022-04-28 02:02:37,027 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-28 02:02:37,027 INFO L82 GeneralOperation]: Start isEquivalent. First operand 425 states. Second operand has 393 states, 389 states have (on average 1.2030848329048842) internal successors, (468), 389 states have internal predecessors, (468), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 02:02:37,028 INFO L74 IsIncluded]: Start isIncluded. First operand 425 states. Second operand has 393 states, 389 states have (on average 1.2030848329048842) internal successors, (468), 389 states have internal predecessors, (468), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 02:02:37,028 INFO L87 Difference]: Start difference. First operand 425 states. Second operand has 393 states, 389 states have (on average 1.2030848329048842) internal successors, (468), 389 states have internal predecessors, (468), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 02:02:37,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 02:02:37,036 INFO L93 Difference]: Finished difference Result 425 states and 503 transitions. [2022-04-28 02:02:37,036 INFO L276 IsEmpty]: Start isEmpty. Operand 425 states and 503 transitions. [2022-04-28 02:02:37,037 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-28 02:02:37,037 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-28 02:02:37,037 INFO L74 IsIncluded]: Start isIncluded. First operand has 393 states, 389 states have (on average 1.2030848329048842) internal successors, (468), 389 states have internal predecessors, (468), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Second operand 425 states. [2022-04-28 02:02:37,038 INFO L87 Difference]: Start difference. First operand has 393 states, 389 states have (on average 1.2030848329048842) internal successors, (468), 389 states have internal predecessors, (468), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Second operand 425 states. [2022-04-28 02:02:37,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 02:02:37,046 INFO L93 Difference]: Finished difference Result 425 states and 503 transitions. [2022-04-28 02:02:37,046 INFO L276 IsEmpty]: Start isEmpty. Operand 425 states and 503 transitions. [2022-04-28 02:02:37,046 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-28 02:02:37,046 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-28 02:02:37,046 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-28 02:02:37,046 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-28 02:02:37,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 393 states, 389 states have (on average 1.2030848329048842) internal successors, (468), 389 states have internal predecessors, (468), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 02:02:37,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 471 transitions. [2022-04-28 02:02:37,054 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 471 transitions. Word has length 20 [2022-04-28 02:02:37,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-28 02:02:37,054 INFO L495 AbstractCegarLoop]: Abstraction has 393 states and 471 transitions. [2022-04-28 02:02:37,054 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 02:02:37,055 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 471 transitions. [2022-04-28 02:02:37,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-04-28 02:02:37,055 INFO L187 NwaCegarLoop]: Found error trace [2022-04-28 02:02:37,055 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-28 02:02:37,055 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-04-28 02:02:37,055 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-28 02:02:37,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-28 02:02:37,056 INFO L85 PathProgramCache]: Analyzing trace with hash -742858926, now seen corresponding path program 1 times [2022-04-28 02:02:37,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-28 02:02:37,056 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66399517] [2022-04-28 02:02:37,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-28 02:02:37,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-28 02:02:37,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-28 02:02:37,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-28 02:02:37,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-28 02:02:37,078 INFO L290 TraceCheckUtils]: 0: Hoare triple {8935#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} [120] ULTIMATE.initENTRY-->ULTIMATE.initFINAL: Formula: (let ((.cse0 (select |v_#memory_int_1| 1))) (and (= (select |v_#length_1| 2) 15) (= 48 (select .cse0 0)) (= (select |v_#valid_1| 2) 1) (= (select |v_#valid_1| 0) 0) (< 0 |v_#StackHeapBarrier_1|) (= |v_#NULL.base_1| 0) (= 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] {8929#true} is VALID [2022-04-28 02:02:37,078 INFO L290 TraceCheckUtils]: 1: Hoare triple {8929#true} [123] ULTIMATE.initFINAL-->ULTIMATE.initEXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {8929#true} is VALID [2022-04-28 02:02:37,078 INFO L284 TraceCheckUtils]: 2: Hoare quadruple {8929#true} {8929#true} [163] ULTIMATE.initEXIT-->L-1: AOR: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] LVA: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {8929#true} is VALID [2022-04-28 02:02:37,079 INFO L272 TraceCheckUtils]: 0: Hoare triple {8929#true} [118] ULTIMATE.startENTRY-->ULTIMATE.initENTRY: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {8935#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} is VALID [2022-04-28 02:02:37,079 INFO L290 TraceCheckUtils]: 1: Hoare triple {8935#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} [120] ULTIMATE.initENTRY-->ULTIMATE.initFINAL: Formula: (let ((.cse0 (select |v_#memory_int_1| 1))) (and (= (select |v_#length_1| 2) 15) (= 48 (select .cse0 0)) (= (select |v_#valid_1| 2) 1) (= (select |v_#valid_1| 0) 0) (< 0 |v_#StackHeapBarrier_1|) (= |v_#NULL.base_1| 0) (= 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] {8929#true} is VALID [2022-04-28 02:02:37,079 INFO L290 TraceCheckUtils]: 2: Hoare triple {8929#true} [123] ULTIMATE.initFINAL-->ULTIMATE.initEXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {8929#true} is VALID [2022-04-28 02:02:37,079 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {8929#true} {8929#true} [163] ULTIMATE.initEXIT-->L-1: AOR: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] LVA: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {8929#true} is VALID [2022-04-28 02:02:37,079 INFO L272 TraceCheckUtils]: 4: Hoare triple {8929#true} [119] L-1-->mainENTRY: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {8929#true} is VALID [2022-04-28 02:02:37,079 INFO L290 TraceCheckUtils]: 5: Hoare triple {8929#true} [122] mainENTRY-->L85-1: Formula: (and (= v_main_~p4~0_1 |v_main_#t~nondet7_2|) (<= |v_main_#t~nondet8_2| 2147483647) (<= |v_main_#t~nondet5_2| 2147483647) (<= 0 (+ |v_main_#t~nondet8_2| 2147483648)) (<= |v_main_#t~nondet6_2| 2147483647) (= v_main_~p1~0_1 |v_main_#t~nondet4_2|) (= v_main_~p2~0_2 |v_main_#t~nondet5_2|) (= v_main_~p5~0_1 |v_main_#t~nondet8_2|) (<= 0 (+ |v_main_#t~nondet4_2| 2147483648)) (<= 0 (+ |v_main_#t~nondet7_2| 2147483648)) (= v_main_~p3~0_1 |v_main_#t~nondet6_2|) (<= |v_main_#t~nondet4_2| 2147483647) (<= 0 (+ |v_main_#t~nondet6_2| 2147483648)) (<= 0 (+ |v_main_#t~nondet5_2| 2147483648)) (<= |v_main_#t~nondet7_2| 2147483647)) InVars {main_#t~nondet5=|v_main_#t~nondet5_2|, main_#t~nondet4=|v_main_#t~nondet4_2|, main_#t~nondet7=|v_main_#t~nondet7_2|, main_#t~nondet6=|v_main_#t~nondet6_2|, main_#t~nondet8=|v_main_#t~nondet8_2|} OutVars{main_~p5~0=v_main_~p5~0_1, main_~lk2~0=v_main_~lk2~0_4, main_~lk3~0=v_main_~lk3~0_1, main_~p1~0=v_main_~p1~0_1, main_~lk1~0=v_main_~lk1~0_1, main_~lk5~0=v_main_~lk5~0_1, main_~lk4~0=v_main_~lk4~0_1, main_~p3~0=v_main_~p3~0_1, main_~p2~0=v_main_~p2~0_2, main_~p4~0=v_main_~p4~0_1, main_~cond~0=v_main_~cond~0_1} AuxVars[] AssignedVars[main_#t~nondet5, main_#t~nondet4, main_#t~nondet7, main_~lk3~0, main_#t~nondet6, main_~p1~0, main_~lk1~0, main_~lk5~0, main_~p2~0, main_~p4~0, main_#t~nondet8, main_~cond~0, main_~p5~0, main_~lk2~0, main_~lk4~0, main_~p3~0] {8929#true} is VALID [2022-04-28 02:02:37,079 INFO L290 TraceCheckUtils]: 6: Hoare triple {8929#true} [126] L85-1-->L28: Formula: (and (= |v_main_#t~nondet9_2| v_main_~cond~0_2) (<= 0 (+ |v_main_#t~nondet9_2| 2147483648)) (<= |v_main_#t~nondet9_2| 2147483647)) InVars {main_#t~nondet9=|v_main_#t~nondet9_2|} OutVars{main_~cond~0=v_main_~cond~0_2} AuxVars[] AssignedVars[main_#t~nondet9, main_~cond~0] {8929#true} is VALID [2022-04-28 02:02:37,079 INFO L290 TraceCheckUtils]: 7: Hoare triple {8929#true} [129] L28-->L43: Formula: (and (= v_main_~lk4~0_2 0) (= v_main_~lk1~0_2 0) (= v_main_~lk3~0_5 0) (= v_main_~lk2~0_5 0) (not (= 0 v_main_~cond~0_4)) (= v_main_~lk5~0_2 0)) InVars {main_~cond~0=v_main_~cond~0_4} OutVars{main_~lk2~0=v_main_~lk2~0_5, main_~lk3~0=v_main_~lk3~0_5, main_~lk1~0=v_main_~lk1~0_2, main_~lk5~0=v_main_~lk5~0_2, main_~lk4~0=v_main_~lk4~0_2, main_~cond~0=v_main_~cond~0_4} AuxVars[] AssignedVars[main_~lk2~0, main_~lk3~0, main_~lk1~0, main_~lk5~0, main_~lk4~0] {8929#true} is VALID [2022-04-28 02:02:37,079 INFO L290 TraceCheckUtils]: 8: Hoare triple {8929#true} [132] L43-->L43-2: Formula: (= v_main_~p1~0_3 0) InVars {main_~p1~0=v_main_~p1~0_3} OutVars{main_~p1~0=v_main_~p1~0_3} AuxVars[] AssignedVars[] {8929#true} is VALID [2022-04-28 02:02:37,080 INFO L290 TraceCheckUtils]: 9: Hoare triple {8929#true} [134] L43-2-->L47-1: Formula: (= v_main_~p2~0_5 0) InVars {main_~p2~0=v_main_~p2~0_5} OutVars{main_~p2~0=v_main_~p2~0_5} AuxVars[] AssignedVars[] {8929#true} is VALID [2022-04-28 02:02:37,080 INFO L290 TraceCheckUtils]: 10: Hoare triple {8929#true} [136] L47-1-->L51-1: Formula: (= v_main_~p3~0_5 0) InVars {main_~p3~0=v_main_~p3~0_5} OutVars{main_~p3~0=v_main_~p3~0_5} AuxVars[] AssignedVars[] {8929#true} is VALID [2022-04-28 02:02:37,080 INFO L290 TraceCheckUtils]: 11: Hoare triple {8929#true} [138] L51-1-->L55-1: Formula: (= v_main_~p4~0_5 0) InVars {main_~p4~0=v_main_~p4~0_5} OutVars{main_~p4~0=v_main_~p4~0_5} AuxVars[] AssignedVars[] {8929#true} is VALID [2022-04-28 02:02:37,080 INFO L290 TraceCheckUtils]: 12: Hoare triple {8929#true} [140] L55-1-->L59-1: Formula: (= v_main_~p5~0_5 0) InVars {main_~p5~0=v_main_~p5~0_5} OutVars{main_~p5~0=v_main_~p5~0_5} AuxVars[] AssignedVars[] {8934#(= main_~p5~0 0)} is VALID [2022-04-28 02:02:37,080 INFO L290 TraceCheckUtils]: 13: Hoare triple {8934#(= main_~p5~0 0)} [142] L59-1-->L65-1: Formula: (= v_main_~p1~0_5 0) InVars {main_~p1~0=v_main_~p1~0_5} OutVars{main_~p1~0=v_main_~p1~0_5} AuxVars[] AssignedVars[] {8934#(= main_~p5~0 0)} is VALID [2022-04-28 02:02:37,080 INFO L290 TraceCheckUtils]: 14: Hoare triple {8934#(= main_~p5~0 0)} [146] L65-1-->L70-1: Formula: (= v_main_~p2~0_3 0) InVars {main_~p2~0=v_main_~p2~0_3} OutVars{main_~p2~0=v_main_~p2~0_3} AuxVars[] AssignedVars[] {8934#(= main_~p5~0 0)} is VALID [2022-04-28 02:02:37,081 INFO L290 TraceCheckUtils]: 15: Hoare triple {8934#(= main_~p5~0 0)} [152] L70-1-->L75-1: Formula: (= v_main_~p3~0_3 0) InVars {main_~p3~0=v_main_~p3~0_3} OutVars{main_~p3~0=v_main_~p3~0_3} AuxVars[] AssignedVars[] {8934#(= main_~p5~0 0)} is VALID [2022-04-28 02:02:37,081 INFO L290 TraceCheckUtils]: 16: Hoare triple {8934#(= main_~p5~0 0)} [156] L75-1-->L80-1: Formula: (= v_main_~p4~0_3 0) InVars {main_~p4~0=v_main_~p4~0_3} OutVars{main_~p4~0=v_main_~p4~0_3} AuxVars[] AssignedVars[] {8934#(= main_~p5~0 0)} is VALID [2022-04-28 02:02:37,081 INFO L290 TraceCheckUtils]: 17: Hoare triple {8934#(= main_~p5~0 0)} [159] L80-1-->L86: Formula: (not (= v_main_~p5~0_2 0)) InVars {main_~p5~0=v_main_~p5~0_2} OutVars{main_~p5~0=v_main_~p5~0_2} AuxVars[] AssignedVars[] {8930#false} is VALID [2022-04-28 02:02:37,081 INFO L290 TraceCheckUtils]: 18: Hoare triple {8930#false} [161] L86-->L86-1: Formula: (not (= v_main_~lk5~0_3 1)) InVars {main_~lk5~0=v_main_~lk5~0_3} OutVars{main_~lk5~0=v_main_~lk5~0_3} AuxVars[] AssignedVars[] {8930#false} is VALID [2022-04-28 02:02:37,081 INFO L290 TraceCheckUtils]: 19: Hoare triple {8930#false} [147] L86-1-->mainErr0ASSERT_VIOLATIONERROR_FUNCTION: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {8930#false} is VALID [2022-04-28 02:02:37,081 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-28 02:02:37,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-28 02:02:37,082 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [66399517] [2022-04-28 02:02:37,082 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [66399517] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-28 02:02:37,082 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-28 02:02:37,082 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-04-28 02:02:37,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392938107] [2022-04-28 02:02:37,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-28 02:02:37,082 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 20 [2022-04-28 02:02:37,082 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-28 02:02:37,082 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 4 states, 4 states have (on average 4.25) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 02:02:37,092 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 20 edges. 20 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-28 02:02:37,092 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-04-28 02:02:37,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-28 02:02:37,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-04-28 02:02:37,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-04-28 02:02:37,093 INFO L87 Difference]: Start difference. First operand 393 states and 471 transitions. Second operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 02:02:37,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 02:02:37,186 INFO L93 Difference]: Finished difference Result 857 states and 999 transitions. [2022-04-28 02:02:37,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-04-28 02:02:37,187 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 20 [2022-04-28 02:02:37,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-28 02:02:37,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 02:02:37,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 88 transitions. [2022-04-28 02:02:37,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 02:02:37,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 88 transitions. [2022-04-28 02:02:37,188 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 4 states and 88 transitions. [2022-04-28 02:02:37,234 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 88 edges. 88 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-28 02:02:37,234 INFO L225 Difference]: With dead ends: 857 [2022-04-28 02:02:37,234 INFO L226 Difference]: Without dead ends: 0 [2022-04-28 02:02:37,235 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-04-28 02:02:37,235 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 46 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-28 02:02:37,235 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 62 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-28 02:02:37,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-04-28 02:02:37,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-04-28 02:02:37,236 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-28 02:02:37,236 INFO L82 GeneralOperation]: Start isEquivalent. First operand 0 states. Second operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-28 02:02:37,236 INFO L74 IsIncluded]: Start isIncluded. First operand 0 states. Second operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-28 02:02:37,236 INFO L87 Difference]: Start difference. First operand 0 states. Second operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-28 02:02:37,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 02:02:37,236 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2022-04-28 02:02:37,236 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-04-28 02:02:37,236 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-28 02:02:37,236 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-28 02:02:37,236 INFO L74 IsIncluded]: Start isIncluded. First operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand 0 states. [2022-04-28 02:02:37,236 INFO L87 Difference]: Start difference. First operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand 0 states. [2022-04-28 02:02:37,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 02:02:37,236 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2022-04-28 02:02:37,237 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-04-28 02:02:37,237 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-28 02:02:37,237 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-28 02:02:37,237 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-28 02:02:37,237 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-28 02:02:37,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-28 02:02:37,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-04-28 02:02:37,237 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 20 [2022-04-28 02:02:37,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-28 02:02:37,237 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-04-28 02:02:37,237 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 02:02:37,237 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-04-28 02:02:37,237 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-28 02:02:37,239 INFO L805 garLoopResultBuilder]: Registering result SAFE for location mainErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-04-28 02:02:37,239 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-04-28 02:02:37,241 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-04-28 02:02:37,537 INFO L895 garLoopResultBuilder]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|)) [2022-04-28 02:02:37,537 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2022-04-28 02:02:37,537 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2022-04-28 02:02:37,537 INFO L902 garLoopResultBuilder]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2022-04-28 02:02:37,537 INFO L902 garLoopResultBuilder]: At program point L-1(line -1) the Hoare annotation is: true [2022-04-28 02:02:37,537 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-04-28 02:02:37,537 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-04-28 02:02:37,537 INFO L902 garLoopResultBuilder]: At program point mainENTRY(lines 6 95) the Hoare annotation is: true [2022-04-28 02:02:37,537 INFO L902 garLoopResultBuilder]: At program point L85-1(lines 26 90) the Hoare annotation is: true [2022-04-28 02:02:37,537 INFO L902 garLoopResultBuilder]: At program point L91(lines 7 95) the Hoare annotation is: true [2022-04-28 02:02:37,537 INFO L899 garLoopResultBuilder]: For program point L28(lines 28 30) no Hoare annotation was computed. [2022-04-28 02:02:37,537 INFO L899 garLoopResultBuilder]: For program point mainFINAL(lines 6 95) no Hoare annotation was computed. [2022-04-28 02:02:37,538 INFO L899 garLoopResultBuilder]: For program point L43(lines 43 45) no Hoare annotation was computed. [2022-04-28 02:02:37,538 INFO L899 garLoopResultBuilder]: For program point mainEXIT(lines 6 95) no Hoare annotation was computed. [2022-04-28 02:02:37,538 INFO L899 garLoopResultBuilder]: For program point L43-2(lines 26 90) no Hoare annotation was computed. [2022-04-28 02:02:37,538 INFO L899 garLoopResultBuilder]: For program point L47-1(lines 26 90) no Hoare annotation was computed. [2022-04-28 02:02:37,538 INFO L899 garLoopResultBuilder]: For program point L51-1(lines 26 90) no Hoare annotation was computed. [2022-04-28 02:02:37,538 INFO L899 garLoopResultBuilder]: For program point L55-1(lines 26 90) no Hoare annotation was computed. [2022-04-28 02:02:37,538 INFO L899 garLoopResultBuilder]: For program point L59-1(lines 26 90) no Hoare annotation was computed. [2022-04-28 02:02:37,538 INFO L899 garLoopResultBuilder]: For program point L66(line 66) no Hoare annotation was computed. [2022-04-28 02:02:37,538 INFO L899 garLoopResultBuilder]: For program point L65-1(lines 26 90) no Hoare annotation was computed. [2022-04-28 02:02:37,538 INFO L895 garLoopResultBuilder]: At program point L86-1(lines 7 95) the Hoare annotation is: false [2022-04-28 02:02:37,538 INFO L899 garLoopResultBuilder]: For program point L71(line 71) no Hoare annotation was computed. [2022-04-28 02:02:37,538 INFO L899 garLoopResultBuilder]: For program point L70-1(lines 26 90) no Hoare annotation was computed. [2022-04-28 02:02:37,538 INFO L899 garLoopResultBuilder]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 93) no Hoare annotation was computed. [2022-04-28 02:02:37,538 INFO L899 garLoopResultBuilder]: For program point L76(line 76) no Hoare annotation was computed. [2022-04-28 02:02:37,538 INFO L899 garLoopResultBuilder]: For program point L75-1(lines 26 90) no Hoare annotation was computed. [2022-04-28 02:02:37,538 INFO L899 garLoopResultBuilder]: For program point L81(line 81) no Hoare annotation was computed. [2022-04-28 02:02:37,538 INFO L899 garLoopResultBuilder]: For program point L80-1(lines 26 90) no Hoare annotation was computed. [2022-04-28 02:02:37,538 INFO L899 garLoopResultBuilder]: For program point L86(line 86) no Hoare annotation was computed. [2022-04-28 02:02:37,540 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-28 02:02:37,541 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-04-28 02:02:37,545 WARN L170 areAnnotationChecker]: ULTIMATE.initFINAL has no Hoare annotation [2022-04-28 02:02:37,545 WARN L170 areAnnotationChecker]: ULTIMATE.initFINAL has no Hoare annotation [2022-04-28 02:02:37,545 WARN L170 areAnnotationChecker]: L28 has no Hoare annotation [2022-04-28 02:02:37,545 WARN L170 areAnnotationChecker]: ULTIMATE.initEXIT has no Hoare annotation [2022-04-28 02:02:37,545 WARN L170 areAnnotationChecker]: mainFINAL has no Hoare annotation [2022-04-28 02:02:37,545 WARN L170 areAnnotationChecker]: L28 has no Hoare annotation [2022-04-28 02:02:37,545 WARN L170 areAnnotationChecker]: L28 has no Hoare annotation [2022-04-28 02:02:37,545 WARN L170 areAnnotationChecker]: mainFINAL has no Hoare annotation [2022-04-28 02:02:37,545 WARN L170 areAnnotationChecker]: L43 has no Hoare annotation [2022-04-28 02:02:37,545 WARN L170 areAnnotationChecker]: L43 has no Hoare annotation [2022-04-28 02:02:37,545 WARN L170 areAnnotationChecker]: mainEXIT has no Hoare annotation [2022-04-28 02:02:37,546 WARN L170 areAnnotationChecker]: L43-2 has no Hoare annotation [2022-04-28 02:02:37,546 WARN L170 areAnnotationChecker]: L43-2 has no Hoare annotation [2022-04-28 02:02:37,546 WARN L170 areAnnotationChecker]: ULTIMATE.startFINAL has no Hoare annotation [2022-04-28 02:02:37,546 WARN L170 areAnnotationChecker]: L47-1 has no Hoare annotation [2022-04-28 02:02:37,546 WARN L170 areAnnotationChecker]: L47-1 has no Hoare annotation [2022-04-28 02:02:37,546 WARN L170 areAnnotationChecker]: L51-1 has no Hoare annotation [2022-04-28 02:02:37,546 WARN L170 areAnnotationChecker]: L51-1 has no Hoare annotation [2022-04-28 02:02:37,546 WARN L170 areAnnotationChecker]: L55-1 has no Hoare annotation [2022-04-28 02:02:37,546 WARN L170 areAnnotationChecker]: L55-1 has no Hoare annotation [2022-04-28 02:02:37,546 WARN L170 areAnnotationChecker]: L59-1 has no Hoare annotation [2022-04-28 02:02:37,546 WARN L170 areAnnotationChecker]: L59-1 has no Hoare annotation [2022-04-28 02:02:37,546 WARN L170 areAnnotationChecker]: L66 has no Hoare annotation [2022-04-28 02:02:37,546 WARN L170 areAnnotationChecker]: L66 has no Hoare annotation [2022-04-28 02:02:37,546 WARN L170 areAnnotationChecker]: L65-1 has no Hoare annotation [2022-04-28 02:02:37,546 WARN L170 areAnnotationChecker]: L65-1 has no Hoare annotation [2022-04-28 02:02:37,546 WARN L170 areAnnotationChecker]: mainErr0ASSERT_VIOLATIONERROR_FUNCTION has no Hoare annotation [2022-04-28 02:02:37,546 WARN L170 areAnnotationChecker]: mainFINAL has no Hoare annotation [2022-04-28 02:02:37,546 WARN L170 areAnnotationChecker]: L71 has no Hoare annotation [2022-04-28 02:02:37,546 WARN L170 areAnnotationChecker]: L71 has no Hoare annotation [2022-04-28 02:02:37,546 WARN L170 areAnnotationChecker]: L70-1 has no Hoare annotation [2022-04-28 02:02:37,546 WARN L170 areAnnotationChecker]: L70-1 has no Hoare annotation [2022-04-28 02:02:37,546 WARN L170 areAnnotationChecker]: L76 has no Hoare annotation [2022-04-28 02:02:37,546 WARN L170 areAnnotationChecker]: L76 has no Hoare annotation [2022-04-28 02:02:37,546 WARN L170 areAnnotationChecker]: L75-1 has no Hoare annotation [2022-04-28 02:02:37,546 WARN L170 areAnnotationChecker]: L75-1 has no Hoare annotation [2022-04-28 02:02:37,546 WARN L170 areAnnotationChecker]: L81 has no Hoare annotation [2022-04-28 02:02:37,546 WARN L170 areAnnotationChecker]: L81 has no Hoare annotation [2022-04-28 02:02:37,546 WARN L170 areAnnotationChecker]: L80-1 has no Hoare annotation [2022-04-28 02:02:37,546 WARN L170 areAnnotationChecker]: L80-1 has no Hoare annotation [2022-04-28 02:02:37,547 WARN L170 areAnnotationChecker]: L86 has no Hoare annotation [2022-04-28 02:02:37,547 WARN L170 areAnnotationChecker]: L86 has no Hoare annotation [2022-04-28 02:02:37,547 INFO L163 areAnnotationChecker]: CFG has 5 edges. 5 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. 0 times interpolants missing. [2022-04-28 02:02:37,552 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.04 02:02:37 BasicIcfg [2022-04-28 02:02:37,552 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-04-28 02:02:37,552 INFO L158 Benchmark]: Toolchain (without parser) took 4401.23ms. Allocated memory was 197.1MB in the beginning and 289.4MB in the end (delta: 92.3MB). Free memory was 145.0MB in the beginning and 119.6MB in the end (delta: 25.4MB). Peak memory consumption was 120.4MB. Max. memory is 8.0GB. [2022-04-28 02:02:37,553 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 197.1MB. Free memory was 160.9MB in the beginning and 160.8MB in the end (delta: 72.2kB). There was no memory consumed. Max. memory is 8.0GB. [2022-04-28 02:02:37,553 INFO L158 Benchmark]: CACSL2BoogieTranslator took 195.54ms. Allocated memory was 197.1MB in the beginning and 241.2MB in the end (delta: 44.0MB). Free memory was 144.8MB in the beginning and 217.8MB in the end (delta: -73.0MB). Peak memory consumption was 11.4MB. Max. memory is 8.0GB. [2022-04-28 02:02:37,553 INFO L158 Benchmark]: Boogie Preprocessor took 20.71ms. Allocated memory is still 241.2MB. Free memory was 217.8MB in the beginning and 216.3MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-04-28 02:02:37,554 INFO L158 Benchmark]: RCFGBuilder took 313.04ms. Allocated memory is still 241.2MB. Free memory was 215.9MB in the beginning and 203.8MB in the end (delta: 12.1MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2022-04-28 02:02:37,554 INFO L158 Benchmark]: IcfgTransformer took 66.22ms. Allocated memory is still 241.2MB. Free memory was 203.8MB in the beginning and 202.1MB in the end (delta: 1.7MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-04-28 02:02:37,554 INFO L158 Benchmark]: TraceAbstraction took 3790.34ms. Allocated memory was 241.2MB in the beginning and 289.4MB in the end (delta: 48.2MB). Free memory was 201.7MB in the beginning and 119.6MB in the end (delta: 82.1MB). Peak memory consumption was 132.8MB. Max. memory is 8.0GB. [2022-04-28 02:02:37,555 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 197.1MB. Free memory was 160.9MB in the beginning and 160.8MB in the end (delta: 72.2kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 195.54ms. Allocated memory was 197.1MB in the beginning and 241.2MB in the end (delta: 44.0MB). Free memory was 144.8MB in the beginning and 217.8MB in the end (delta: -73.0MB). Peak memory consumption was 11.4MB. Max. memory is 8.0GB. * Boogie Preprocessor took 20.71ms. Allocated memory is still 241.2MB. Free memory was 217.8MB in the beginning and 216.3MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 313.04ms. Allocated memory is still 241.2MB. Free memory was 215.9MB in the beginning and 203.8MB in the end (delta: 12.1MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * IcfgTransformer took 66.22ms. Allocated memory is still 241.2MB. Free memory was 203.8MB in the beginning and 202.1MB in the end (delta: 1.7MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * TraceAbstraction took 3790.34ms. Allocated memory was 241.2MB in the beginning and 289.4MB in the end (delta: 48.2MB). Free memory was 201.7MB in the beginning and 119.6MB in the end (delta: 82.1MB). Peak memory consumption was 132.8MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 93]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 30 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 3.7s, OverallIterations: 14, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 2.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.3s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 910 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 910 mSDsluCounter, 768 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 100 mSDsCounter, 33 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 462 IncrementalHoareTripleChecker+Invalid, 495 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 33 mSolverCounterUnsat, 668 mSDtfsCounter, 462 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 98 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=393occurred in iteration=13, InterpolantAutomatonStates: 56, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 14 MinimizatonAttempts, 138 StatesRemovedByMinimization, 13 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 7 PreInvPairs, 42 NumberOfFragments, 13 HoareAnnotationTreeSize, 7 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.3s HoareSimplificationTime, 7 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 254 NumberOfCodeBlocks, 254 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 240 ConstructedInterpolants, 0 QuantifiedInterpolants, 494 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 14 InterpolantComputations, 14 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 7]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 7]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 26]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2022-04-28 02:02:37,594 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...