/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/automizer/LoopAccelerationJordanC.epf -i ../../../trunk/examples/svcomp/locks/test_locks_5.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-e106359-m [2022-04-14 23:28:24,800 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-04-14 23:28:24,801 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-04-14 23:28:24,838 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-04-14 23:28:24,846 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-04-14 23:28:24,847 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-04-14 23:28:24,848 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-04-14 23:28:24,849 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-04-14 23:28:24,849 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-04-14 23:28:24,850 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-04-14 23:28:24,851 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-04-14 23:28:24,852 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-04-14 23:28:24,853 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-04-14 23:28:24,856 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-04-14 23:28:24,857 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-04-14 23:28:24,857 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-04-14 23:28:24,859 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-04-14 23:28:24,866 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-04-14 23:28:24,873 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-04-14 23:28:24,874 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-04-14 23:28:24,876 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-04-14 23:28:24,877 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2022-04-14 23:28:24,887 INFO L113 SettingsManager]: Loading preferences was successful [2022-04-14 23:28:24,888 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-04-14 23:28:24,889 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-04-14 23:28:24,889 INFO L138 SettingsManager]: * sizeof long=4 [2022-04-14 23:28:24,889 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-04-14 23:28:24,889 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-04-14 23:28:24,889 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-04-14 23:28:24,890 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-04-14 23:28:24,890 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-04-14 23:28:24,890 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-04-14 23:28:24,890 INFO L138 SettingsManager]: * sizeof long double=12 [2022-04-14 23:28:24,891 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-04-14 23:28:24,891 INFO L138 SettingsManager]: * Use constant arrays=true [2022-04-14 23:28:24,891 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-04-14 23:28:24,891 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-04-14 23:28:24,891 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-04-14 23:28:24,891 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-04-14 23:28:24,891 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-04-14 23:28:24,892 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-14 23:28:24,892 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-04-14 23:28:24,892 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-04-14 23:28:24,893 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-04-14 23:28:24,893 INFO L138 SettingsManager]: * TransformationType=LOOP_ACCELERATION_JORDAN WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-04-14 23:28:25,110 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-04-14 23:28:25,126 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-04-14 23:28:25,128 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-04-14 23:28:25,129 INFO L271 PluginConnector]: Initializing CDTParser... [2022-04-14 23:28:25,132 INFO L275 PluginConnector]: CDTParser initialized [2022-04-14 23:28:25,133 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/locks/test_locks_5.c [2022-04-14 23:28:25,204 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e4f721a6f/d83293be526149758df444d9bf5541ea/FLAG9c78f5cfb [2022-04-14 23:28:25,542 INFO L306 CDTParser]: Found 1 translation units. [2022-04-14 23:28:25,543 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/locks/test_locks_5.c [2022-04-14 23:28:25,548 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e4f721a6f/d83293be526149758df444d9bf5541ea/FLAG9c78f5cfb [2022-04-14 23:28:25,984 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e4f721a6f/d83293be526149758df444d9bf5541ea [2022-04-14 23:28:25,986 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-04-14 23:28:25,987 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-04-14 23:28:25,988 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-04-14 23:28:25,988 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-04-14 23:28:25,995 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-04-14 23:28:25,996 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.04 11:28:25" (1/1) ... [2022-04-14 23:28:25,997 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@17af9642 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 11:28:25, skipping insertion in model container [2022-04-14 23:28:25,997 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.04 11:28:25" (1/1) ... [2022-04-14 23:28:26,003 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-04-14 23:28:26,015 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-04-14 23:28:26,144 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] [2022-04-14 23:28:26,147 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-14 23:28:26,153 INFO L203 MainTranslator]: Completed pre-run [2022-04-14 23:28:26,171 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] [2022-04-14 23:28:26,172 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-14 23:28:26,182 INFO L208 MainTranslator]: Completed translation [2022-04-14 23:28:26,182 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 11:28:26 WrapperNode [2022-04-14 23:28:26,183 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-04-14 23:28:26,183 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-04-14 23:28:26,183 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-04-14 23:28:26,184 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-04-14 23:28:26,195 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 11:28:26" (1/1) ... [2022-04-14 23:28:26,195 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 11:28:26" (1/1) ... [2022-04-14 23:28:26,200 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 11:28:26" (1/1) ... [2022-04-14 23:28:26,200 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 11:28:26" (1/1) ... [2022-04-14 23:28:26,205 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 11:28:26" (1/1) ... [2022-04-14 23:28:26,210 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 11:28:26" (1/1) ... [2022-04-14 23:28:26,211 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 11:28:26" (1/1) ... [2022-04-14 23:28:26,212 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-04-14 23:28:26,213 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-04-14 23:28:26,213 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-04-14 23:28:26,213 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-04-14 23:28:26,214 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 11:28:26" (1/1) ... [2022-04-14 23:28:26,234 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-14 23:28:26,242 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-14 23:28:26,252 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) [2022-04-14 23:28:26,275 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 [2022-04-14 23:28:26,297 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-04-14 23:28:26,297 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-04-14 23:28:26,298 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-04-14 23:28:26,298 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-04-14 23:28:26,298 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-04-14 23:28:26,299 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-04-14 23:28:26,299 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-04-14 23:28:26,299 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-04-14 23:28:26,299 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-04-14 23:28:26,299 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-04-14 23:28:26,299 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-04-14 23:28:26,299 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-04-14 23:28:26,300 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-04-14 23:28:26,300 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-04-14 23:28:26,300 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-04-14 23:28:26,302 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-04-14 23:28:26,362 INFO L234 CfgBuilder]: Building ICFG [2022-04-14 23:28:26,364 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-04-14 23:28:26,501 INFO L275 CfgBuilder]: Performing block encoding [2022-04-14 23:28:26,507 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-04-14 23:28:26,507 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-04-14 23:28:26,509 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.04 11:28:26 BoogieIcfgContainer [2022-04-14 23:28:26,509 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-04-14 23:28:26,509 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-04-14 23:28:26,509 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-04-14 23:28:26,510 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-04-14 23:28:26,513 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.04 11:28:26" (1/1) ... [2022-04-14 23:28:26,514 INFO L168 ansformationObserver]: Applying ICFG transformation LOOP_ACCELERATION_JORDAN [2022-04-14 23:28:26,540 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 14.04 11:28:26 BasicIcfg [2022-04-14 23:28:26,540 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-04-14 23:28:26,542 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-04-14 23:28:26,542 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-04-14 23:28:26,544 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-04-14 23:28:26,544 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.04 11:28:25" (1/4) ... [2022-04-14 23:28:26,545 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@518010f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.04 11:28:26, skipping insertion in model container [2022-04-14 23:28:26,545 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 11:28:26" (2/4) ... [2022-04-14 23:28:26,545 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@518010f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.04 11:28:26, skipping insertion in model container [2022-04-14 23:28:26,545 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.04 11:28:26" (3/4) ... [2022-04-14 23:28:26,546 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@518010f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.04 11:28:26, skipping insertion in model container [2022-04-14 23:28:26,546 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 14.04 11:28:26" (4/4) ... [2022-04-14 23:28:26,547 INFO L111 eAbstractionObserver]: Analyzing ICFG test_locks_5.cJordan [2022-04-14 23:28:26,550 INFO L202 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2022-04-14 23:28:26,550 INFO L161 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-04-14 23:28:26,582 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-14 23:28:26,587 INFO L340 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=ForwardPredicates, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP [2022-04-14 23:28:26,587 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-04-14 23:28:26,601 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) [2022-04-14 23:28:26,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-04-14 23:28:26,616 INFO L491 BasicCegarLoop]: Found error trace [2022-04-14 23:28:26,616 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-14 23:28:26,617 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-14 23:28:26,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-14 23:28:26,621 INFO L85 PathProgramCache]: Analyzing trace with hash -655326661, now seen corresponding path program 1 times [2022-04-14 23:28:26,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-14 23:28:26,629 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279478228] [2022-04-14 23:28:26,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-14 23:28:26,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-14 23:28:26,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-14 23:28:26,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-14 23:28:26,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-14 23:28:26,790 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 [2022-04-14 23:28:26,790 INFO L290 TraceCheckUtils]: 1: Hoare triple {33#true} [123] ULTIMATE.initFINAL-->ULTIMATE.initEXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {33#true} is VALID [2022-04-14 23:28:26,791 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 [2022-04-14 23:28:26,792 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 [2022-04-14 23:28:26,793 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 [2022-04-14 23:28:26,793 INFO L290 TraceCheckUtils]: 2: Hoare triple {33#true} [123] ULTIMATE.initFINAL-->ULTIMATE.initEXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {33#true} is VALID [2022-04-14 23:28:26,793 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 [2022-04-14 23:28:26,793 INFO L272 TraceCheckUtils]: 4: Hoare triple {33#true} [119] L-1-->mainENTRY: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {33#true} is VALID [2022-04-14 23:28:26,794 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 [2022-04-14 23:28:26,794 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 [2022-04-14 23:28:26,795 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 [2022-04-14 23:28:26,795 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 [2022-04-14 23:28:26,796 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 [2022-04-14 23:28:26,797 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 [2022-04-14 23:28:26,798 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 [2022-04-14 23:28:26,798 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 [2022-04-14 23:28:26,799 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 [2022-04-14 23:28:26,799 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 [2022-04-14 23:28:26,800 INFO L290 TraceCheckUtils]: 15: Hoare triple {34#false} [147] L86-1-->mainErr0ASSERT_VIOLATIONERROR_FUNCTION: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {34#false} is VALID [2022-04-14 23:28:26,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-14 23:28:26,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-14 23:28:26,801 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1279478228] [2022-04-14 23:28:26,801 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1279478228] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-14 23:28:26,802 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-14 23:28:26,802 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-04-14 23:28:26,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138678718] [2022-04-14 23:28:26,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-14 23:28:26,807 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 [2022-04-14 23:28:26,809 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-14 23:28:26,811 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) [2022-04-14 23:28:26,832 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 16 edges. 16 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-14 23:28:26,832 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-04-14 23:28:26,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-14 23:28:26,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-04-14 23:28:26,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-04-14 23:28:26,852 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) [2022-04-14 23:28:27,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-14 23:28:27,026 INFO L93 Difference]: Finished difference Result 51 states and 78 transitions. [2022-04-14 23:28:27,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-04-14 23:28:27,027 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 [2022-04-14 23:28:27,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-14 23:28:27,028 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) [2022-04-14 23:28:27,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 85 transitions. [2022-04-14 23:28:27,037 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) [2022-04-14 23:28:27,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 85 transitions. [2022-04-14 23:28:27,043 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 4 states and 85 transitions. [2022-04-14 23:28:27,137 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 85 edges. 85 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-14 23:28:27,145 INFO L225 Difference]: With dead ends: 51 [2022-04-14 23:28:27,145 INFO L226 Difference]: Without dead ends: 43 [2022-04-14 23:28:27,147 INFO L912 BasicCegarLoop]: 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 [2022-04-14 23:28:27,150 INFO L913 BasicCegarLoop]: 50 mSDtfsCounter, 89 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s 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, 0.0s IncrementalHoareTripleChecker+Time [2022-04-14 23:28:27,150 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [89 Valid, 59 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-14 23:28:27,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2022-04-14 23:28:27,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 31. [2022-04-14 23:28:27,172 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-14 23:28:27,172 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) [2022-04-14 23:28:27,173 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) [2022-04-14 23:28:27,173 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) [2022-04-14 23:28:27,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-14 23:28:27,178 INFO L93 Difference]: Finished difference Result 43 states and 69 transitions. [2022-04-14 23:28:27,178 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 69 transitions. [2022-04-14 23:28:27,179 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-14 23:28:27,179 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-14 23:28:27,179 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. [2022-04-14 23:28:27,180 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. [2022-04-14 23:28:27,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-14 23:28:27,184 INFO L93 Difference]: Finished difference Result 43 states and 69 transitions. [2022-04-14 23:28:27,184 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 69 transitions. [2022-04-14 23:28:27,184 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-14 23:28:27,184 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-14 23:28:27,185 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-14 23:28:27,185 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-14 23:28:27,185 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) [2022-04-14 23:28:27,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 50 transitions. [2022-04-14 23:28:27,188 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 50 transitions. Word has length 16 [2022-04-14 23:28:27,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-14 23:28:27,188 INFO L478 AbstractCegarLoop]: Abstraction has 31 states and 50 transitions. [2022-04-14 23:28:27,189 INFO L479 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) [2022-04-14 23:28:27,189 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 50 transitions. [2022-04-14 23:28:27,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-04-14 23:28:27,189 INFO L491 BasicCegarLoop]: Found error trace [2022-04-14 23:28:27,190 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-14 23:28:27,190 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-04-14 23:28:27,190 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-14 23:28:27,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-14 23:28:27,191 INFO L85 PathProgramCache]: Analyzing trace with hash 1087483674, now seen corresponding path program 1 times [2022-04-14 23:28:27,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-14 23:28:27,191 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671900811] [2022-04-14 23:28:27,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-14 23:28:27,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-14 23:28:27,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-14 23:28:27,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-14 23:28:27,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-14 23:28:27,273 INFO L290 TraceCheckUtils]: 0: Hoare triple {219#(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] {213#true} is VALID [2022-04-14 23:28:27,274 INFO L290 TraceCheckUtils]: 1: Hoare triple {213#true} [123] ULTIMATE.initFINAL-->ULTIMATE.initEXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {213#true} is VALID [2022-04-14 23:28:27,274 INFO L284 TraceCheckUtils]: 2: Hoare quadruple {213#true} {213#true} [163] ULTIMATE.initEXIT-->L-1: AOR: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] LVA: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {213#true} is VALID [2022-04-14 23:28:27,275 INFO L272 TraceCheckUtils]: 0: Hoare triple {213#true} [118] ULTIMATE.startENTRY-->ULTIMATE.initENTRY: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {219#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} is VALID [2022-04-14 23:28:27,275 INFO L290 TraceCheckUtils]: 1: Hoare triple {219#(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] {213#true} is VALID [2022-04-14 23:28:27,275 INFO L290 TraceCheckUtils]: 2: Hoare triple {213#true} [123] ULTIMATE.initFINAL-->ULTIMATE.initEXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {213#true} is VALID [2022-04-14 23:28:27,275 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {213#true} {213#true} [163] ULTIMATE.initEXIT-->L-1: AOR: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] LVA: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {213#true} is VALID [2022-04-14 23:28:27,276 INFO L272 TraceCheckUtils]: 4: Hoare triple {213#true} [119] L-1-->mainENTRY: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {213#true} is VALID [2022-04-14 23:28:27,276 INFO L290 TraceCheckUtils]: 5: Hoare triple {213#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] {213#true} is VALID [2022-04-14 23:28:27,276 INFO L290 TraceCheckUtils]: 6: Hoare triple {213#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] {213#true} is VALID [2022-04-14 23:28:27,276 INFO L290 TraceCheckUtils]: 7: Hoare triple {213#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] {213#true} is VALID [2022-04-14 23:28:27,277 INFO L290 TraceCheckUtils]: 8: Hoare triple {213#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[] {218#(= main_~p1~0 0)} is VALID [2022-04-14 23:28:27,277 INFO L290 TraceCheckUtils]: 9: Hoare triple {218#(= 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] {218#(= main_~p1~0 0)} is VALID [2022-04-14 23:28:27,278 INFO L290 TraceCheckUtils]: 10: Hoare triple {218#(= 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] {218#(= main_~p1~0 0)} is VALID [2022-04-14 23:28:27,279 INFO L290 TraceCheckUtils]: 11: Hoare triple {218#(= 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] {218#(= main_~p1~0 0)} is VALID [2022-04-14 23:28:27,280 INFO L290 TraceCheckUtils]: 12: Hoare triple {218#(= 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] {218#(= main_~p1~0 0)} is VALID [2022-04-14 23:28:27,280 INFO L290 TraceCheckUtils]: 13: Hoare triple {218#(= 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[] {214#false} is VALID [2022-04-14 23:28:27,280 INFO L290 TraceCheckUtils]: 14: Hoare triple {214#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[] {214#false} is VALID [2022-04-14 23:28:27,281 INFO L290 TraceCheckUtils]: 15: Hoare triple {214#false} [147] L86-1-->mainErr0ASSERT_VIOLATIONERROR_FUNCTION: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {214#false} is VALID [2022-04-14 23:28:27,281 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-14 23:28:27,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-14 23:28:27,281 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1671900811] [2022-04-14 23:28:27,282 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1671900811] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-14 23:28:27,282 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-14 23:28:27,282 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-04-14 23:28:27,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546290873] [2022-04-14 23:28:27,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-14 23:28:27,283 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 [2022-04-14 23:28:27,283 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-14 23:28:27,284 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) [2022-04-14 23:28:27,297 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 16 edges. 16 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-14 23:28:27,298 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-04-14 23:28:27,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-14 23:28:27,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-04-14 23:28:27,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-04-14 23:28:27,300 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) [2022-04-14 23:28:27,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-14 23:28:27,427 INFO L93 Difference]: Finished difference Result 43 states and 67 transitions. [2022-04-14 23:28:27,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-04-14 23:28:27,427 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 [2022-04-14 23:28:27,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-14 23:28:27,431 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) [2022-04-14 23:28:27,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 69 transitions. [2022-04-14 23:28:27,437 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) [2022-04-14 23:28:27,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 69 transitions. [2022-04-14 23:28:27,443 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 4 states and 69 transitions. [2022-04-14 23:28:27,517 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 69 edges. 69 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-14 23:28:27,519 INFO L225 Difference]: With dead ends: 43 [2022-04-14 23:28:27,519 INFO L226 Difference]: Without dead ends: 43 [2022-04-14 23:28:27,520 INFO L912 BasicCegarLoop]: 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 [2022-04-14 23:28:27,521 INFO L913 BasicCegarLoop]: 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 [2022-04-14 23:28:27,521 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [73 Valid, 55 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-14 23:28:27,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2022-04-14 23:28:27,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 41. [2022-04-14 23:28:27,525 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-14 23:28:27,526 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) [2022-04-14 23:28:27,526 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) [2022-04-14 23:28:27,527 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) [2022-04-14 23:28:27,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-14 23:28:27,529 INFO L93 Difference]: Finished difference Result 43 states and 67 transitions. [2022-04-14 23:28:27,529 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 67 transitions. [2022-04-14 23:28:27,530 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-14 23:28:27,530 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-14 23:28:27,530 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. [2022-04-14 23:28:27,530 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. [2022-04-14 23:28:27,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-14 23:28:27,533 INFO L93 Difference]: Finished difference Result 43 states and 67 transitions. [2022-04-14 23:28:27,533 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 67 transitions. [2022-04-14 23:28:27,534 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-14 23:28:27,534 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-14 23:28:27,534 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-14 23:28:27,534 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-14 23:28:27,534 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) [2022-04-14 23:28:27,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 66 transitions. [2022-04-14 23:28:27,536 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 66 transitions. Word has length 16 [2022-04-14 23:28:27,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-14 23:28:27,537 INFO L478 AbstractCegarLoop]: Abstraction has 41 states and 66 transitions. [2022-04-14 23:28:27,537 INFO L479 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) [2022-04-14 23:28:27,537 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 66 transitions. [2022-04-14 23:28:27,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-04-14 23:28:27,538 INFO L491 BasicCegarLoop]: Found error trace [2022-04-14 23:28:27,538 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-14 23:28:27,538 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-04-14 23:28:27,538 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-14 23:28:27,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-14 23:28:27,539 INFO L85 PathProgramCache]: Analyzing trace with hash 1159741911, now seen corresponding path program 1 times [2022-04-14 23:28:27,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-14 23:28:27,539 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [190661616] [2022-04-14 23:28:27,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-14 23:28:27,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-14 23:28:27,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-14 23:28:27,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-14 23:28:27,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-14 23:28:27,632 INFO L290 TraceCheckUtils]: 0: Hoare triple {401#(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] {395#true} is VALID [2022-04-14 23:28:27,633 INFO L290 TraceCheckUtils]: 1: Hoare triple {395#true} [123] ULTIMATE.initFINAL-->ULTIMATE.initEXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {395#true} is VALID [2022-04-14 23:28:27,633 INFO L284 TraceCheckUtils]: 2: Hoare quadruple {395#true} {395#true} [163] ULTIMATE.initEXIT-->L-1: AOR: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] LVA: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {395#true} is VALID [2022-04-14 23:28:27,634 INFO L272 TraceCheckUtils]: 0: Hoare triple {395#true} [118] ULTIMATE.startENTRY-->ULTIMATE.initENTRY: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {401#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} is VALID [2022-04-14 23:28:27,634 INFO L290 TraceCheckUtils]: 1: Hoare triple {401#(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] {395#true} is VALID [2022-04-14 23:28:27,634 INFO L290 TraceCheckUtils]: 2: Hoare triple {395#true} [123] ULTIMATE.initFINAL-->ULTIMATE.initEXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {395#true} is VALID [2022-04-14 23:28:27,634 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {395#true} {395#true} [163] ULTIMATE.initEXIT-->L-1: AOR: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] LVA: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {395#true} is VALID [2022-04-14 23:28:27,635 INFO L272 TraceCheckUtils]: 4: Hoare triple {395#true} [119] L-1-->mainENTRY: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {395#true} is VALID [2022-04-14 23:28:27,635 INFO L290 TraceCheckUtils]: 5: Hoare triple {395#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] {395#true} is VALID [2022-04-14 23:28:27,635 INFO L290 TraceCheckUtils]: 6: Hoare triple {395#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] {395#true} is VALID [2022-04-14 23:28:27,635 INFO L290 TraceCheckUtils]: 7: Hoare triple {395#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] {395#true} is VALID [2022-04-14 23:28:27,636 INFO L290 TraceCheckUtils]: 8: Hoare triple {395#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] {400#(not (= main_~p1~0 0))} is VALID [2022-04-14 23:28:27,636 INFO L290 TraceCheckUtils]: 9: Hoare triple {400#(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] {400#(not (= main_~p1~0 0))} is VALID [2022-04-14 23:28:27,637 INFO L290 TraceCheckUtils]: 10: Hoare triple {400#(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] {400#(not (= main_~p1~0 0))} is VALID [2022-04-14 23:28:27,637 INFO L290 TraceCheckUtils]: 11: Hoare triple {400#(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] {400#(not (= main_~p1~0 0))} is VALID [2022-04-14 23:28:27,638 INFO L290 TraceCheckUtils]: 12: Hoare triple {400#(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] {400#(not (= main_~p1~0 0))} is VALID [2022-04-14 23:28:27,638 INFO L290 TraceCheckUtils]: 13: Hoare triple {400#(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[] {396#false} is VALID [2022-04-14 23:28:27,638 INFO L290 TraceCheckUtils]: 14: Hoare triple {396#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[] {396#false} is VALID [2022-04-14 23:28:27,638 INFO L290 TraceCheckUtils]: 15: Hoare triple {396#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[] {396#false} is VALID [2022-04-14 23:28:27,639 INFO L290 TraceCheckUtils]: 16: Hoare triple {396#false} [147] L86-1-->mainErr0ASSERT_VIOLATIONERROR_FUNCTION: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {396#false} is VALID [2022-04-14 23:28:27,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-14 23:28:27,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-14 23:28:27,639 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [190661616] [2022-04-14 23:28:27,640 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [190661616] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-14 23:28:27,640 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-14 23:28:27,640 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-04-14 23:28:27,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345400543] [2022-04-14 23:28:27,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-14 23:28:27,641 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 [2022-04-14 23:28:27,641 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-14 23:28:27,641 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) [2022-04-14 23:28:27,653 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 17 edges. 17 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-14 23:28:27,653 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-04-14 23:28:27,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-14 23:28:27,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-04-14 23:28:27,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-04-14 23:28:27,654 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) [2022-04-14 23:28:27,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-14 23:28:27,755 INFO L93 Difference]: Finished difference Result 46 states and 69 transitions. [2022-04-14 23:28:27,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-04-14 23:28:27,755 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 [2022-04-14 23:28:27,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-14 23:28:27,756 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) [2022-04-14 23:28:27,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 68 transitions. [2022-04-14 23:28:27,758 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) [2022-04-14 23:28:27,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 68 transitions. [2022-04-14 23:28:27,760 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 4 states and 68 transitions. [2022-04-14 23:28:27,817 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 68 edges. 68 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-14 23:28:27,818 INFO L225 Difference]: With dead ends: 46 [2022-04-14 23:28:27,819 INFO L226 Difference]: Without dead ends: 46 [2022-04-14 23:28:27,819 INFO L912 BasicCegarLoop]: 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 [2022-04-14 23:28:27,820 INFO L913 BasicCegarLoop]: 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 [2022-04-14 23:28:27,821 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [66 Valid, 63 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-14 23:28:27,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2022-04-14 23:28:27,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 44. [2022-04-14 23:28:27,824 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-14 23:28:27,824 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) [2022-04-14 23:28:27,825 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) [2022-04-14 23:28:27,825 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) [2022-04-14 23:28:27,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-14 23:28:27,827 INFO L93 Difference]: Finished difference Result 46 states and 69 transitions. [2022-04-14 23:28:27,827 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 69 transitions. [2022-04-14 23:28:27,828 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-14 23:28:27,828 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-14 23:28:27,828 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. [2022-04-14 23:28:27,828 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. [2022-04-14 23:28:27,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-14 23:28:27,830 INFO L93 Difference]: Finished difference Result 46 states and 69 transitions. [2022-04-14 23:28:27,831 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 69 transitions. [2022-04-14 23:28:27,831 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-14 23:28:27,831 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-14 23:28:27,831 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-14 23:28:27,831 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-14 23:28:27,832 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) [2022-04-14 23:28:27,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 68 transitions. [2022-04-14 23:28:27,833 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 68 transitions. Word has length 17 [2022-04-14 23:28:27,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-14 23:28:27,834 INFO L478 AbstractCegarLoop]: Abstraction has 44 states and 68 transitions. [2022-04-14 23:28:27,834 INFO L479 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) [2022-04-14 23:28:27,834 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 68 transitions. [2022-04-14 23:28:27,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-04-14 23:28:27,834 INFO L491 BasicCegarLoop]: Found error trace [2022-04-14 23:28:27,835 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-14 23:28:27,835 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-04-14 23:28:27,835 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-14 23:28:27,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-14 23:28:27,836 INFO L85 PathProgramCache]: Analyzing trace with hash -647712552, now seen corresponding path program 1 times [2022-04-14 23:28:27,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-14 23:28:27,836 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1837130321] [2022-04-14 23:28:27,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-14 23:28:27,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-14 23:28:27,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-14 23:28:27,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-14 23:28:27,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-14 23:28:27,880 INFO L290 TraceCheckUtils]: 0: Hoare triple {595#(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] {589#true} is VALID [2022-04-14 23:28:27,880 INFO L290 TraceCheckUtils]: 1: Hoare triple {589#true} [123] ULTIMATE.initFINAL-->ULTIMATE.initEXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {589#true} is VALID [2022-04-14 23:28:27,880 INFO L284 TraceCheckUtils]: 2: Hoare quadruple {589#true} {589#true} [163] ULTIMATE.initEXIT-->L-1: AOR: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] LVA: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {589#true} is VALID [2022-04-14 23:28:27,881 INFO L272 TraceCheckUtils]: 0: Hoare triple {589#true} [118] ULTIMATE.startENTRY-->ULTIMATE.initENTRY: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {595#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} is VALID [2022-04-14 23:28:27,881 INFO L290 TraceCheckUtils]: 1: Hoare triple {595#(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] {589#true} is VALID [2022-04-14 23:28:27,881 INFO L290 TraceCheckUtils]: 2: Hoare triple {589#true} [123] ULTIMATE.initFINAL-->ULTIMATE.initEXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {589#true} is VALID [2022-04-14 23:28:27,882 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {589#true} {589#true} [163] ULTIMATE.initEXIT-->L-1: AOR: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] LVA: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {589#true} is VALID [2022-04-14 23:28:27,882 INFO L272 TraceCheckUtils]: 4: Hoare triple {589#true} [119] L-1-->mainENTRY: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {589#true} is VALID [2022-04-14 23:28:27,882 INFO L290 TraceCheckUtils]: 5: Hoare triple {589#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] {589#true} is VALID [2022-04-14 23:28:27,882 INFO L290 TraceCheckUtils]: 6: Hoare triple {589#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] {589#true} is VALID [2022-04-14 23:28:27,883 INFO L290 TraceCheckUtils]: 7: Hoare triple {589#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] {589#true} is VALID [2022-04-14 23:28:27,883 INFO L290 TraceCheckUtils]: 8: Hoare triple {589#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[] {589#true} is VALID [2022-04-14 23:28:27,883 INFO L290 TraceCheckUtils]: 9: Hoare triple {589#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] {594#(= main_~lk2~0 1)} is VALID [2022-04-14 23:28:27,884 INFO L290 TraceCheckUtils]: 10: Hoare triple {594#(= 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] {594#(= main_~lk2~0 1)} is VALID [2022-04-14 23:28:27,884 INFO L290 TraceCheckUtils]: 11: Hoare triple {594#(= 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] {594#(= main_~lk2~0 1)} is VALID [2022-04-14 23:28:27,885 INFO L290 TraceCheckUtils]: 12: Hoare triple {594#(= 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] {594#(= main_~lk2~0 1)} is VALID [2022-04-14 23:28:27,885 INFO L290 TraceCheckUtils]: 13: Hoare triple {594#(= 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[] {594#(= main_~lk2~0 1)} is VALID [2022-04-14 23:28:27,886 INFO L290 TraceCheckUtils]: 14: Hoare triple {594#(= 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[] {594#(= main_~lk2~0 1)} is VALID [2022-04-14 23:28:27,886 INFO L290 TraceCheckUtils]: 15: Hoare triple {594#(= 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[] {590#false} is VALID [2022-04-14 23:28:27,886 INFO L290 TraceCheckUtils]: 16: Hoare triple {590#false} [147] L86-1-->mainErr0ASSERT_VIOLATIONERROR_FUNCTION: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {590#false} is VALID [2022-04-14 23:28:27,887 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-14 23:28:27,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-14 23:28:27,887 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1837130321] [2022-04-14 23:28:27,887 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1837130321] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-14 23:28:27,887 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-14 23:28:27,887 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-04-14 23:28:27,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020307777] [2022-04-14 23:28:27,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-14 23:28:27,888 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 [2022-04-14 23:28:27,888 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-14 23:28:27,888 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) [2022-04-14 23:28:27,901 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 17 edges. 17 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-14 23:28:27,901 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-04-14 23:28:27,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-14 23:28:27,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-04-14 23:28:27,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-04-14 23:28:27,902 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) [2022-04-14 23:28:28,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-14 23:28:28,031 INFO L93 Difference]: Finished difference Result 75 states and 118 transitions. [2022-04-14 23:28:28,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-04-14 23:28:28,031 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 [2022-04-14 23:28:28,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-14 23:28:28,032 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) [2022-04-14 23:28:28,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 66 transitions. [2022-04-14 23:28:28,034 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) [2022-04-14 23:28:28,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 66 transitions. [2022-04-14 23:28:28,036 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 4 states and 66 transitions. [2022-04-14 23:28:28,098 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 66 edges. 66 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-14 23:28:28,100 INFO L225 Difference]: With dead ends: 75 [2022-04-14 23:28:28,100 INFO L226 Difference]: Without dead ends: 75 [2022-04-14 23:28:28,100 INFO L912 BasicCegarLoop]: 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 [2022-04-14 23:28:28,101 INFO L913 BasicCegarLoop]: 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 [2022-04-14 23:28:28,102 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [76 Valid, 47 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-14 23:28:28,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2022-04-14 23:28:28,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 57. [2022-04-14 23:28:28,106 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-14 23:28:28,106 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) [2022-04-14 23:28:28,106 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) [2022-04-14 23:28:28,107 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) [2022-04-14 23:28:28,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-14 23:28:28,110 INFO L93 Difference]: Finished difference Result 75 states and 118 transitions. [2022-04-14 23:28:28,110 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 118 transitions. [2022-04-14 23:28:28,110 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-14 23:28:28,110 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-14 23:28:28,111 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. [2022-04-14 23:28:28,111 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. [2022-04-14 23:28:28,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-14 23:28:28,114 INFO L93 Difference]: Finished difference Result 75 states and 118 transitions. [2022-04-14 23:28:28,114 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 118 transitions. [2022-04-14 23:28:28,114 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-14 23:28:28,115 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-14 23:28:28,115 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-14 23:28:28,115 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-14 23:28:28,115 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) [2022-04-14 23:28:28,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 89 transitions. [2022-04-14 23:28:28,117 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 89 transitions. Word has length 17 [2022-04-14 23:28:28,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-14 23:28:28,117 INFO L478 AbstractCegarLoop]: Abstraction has 57 states and 89 transitions. [2022-04-14 23:28:28,118 INFO L479 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) [2022-04-14 23:28:28,118 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 89 transitions. [2022-04-14 23:28:28,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-04-14 23:28:28,118 INFO L491 BasicCegarLoop]: Found error trace [2022-04-14 23:28:28,118 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-14 23:28:28,118 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-04-14 23:28:28,119 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-14 23:28:28,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-14 23:28:28,119 INFO L85 PathProgramCache]: Analyzing trace with hash 1095097783, now seen corresponding path program 1 times [2022-04-14 23:28:28,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-14 23:28:28,120 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [367230395] [2022-04-14 23:28:28,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-14 23:28:28,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-14 23:28:28,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-14 23:28:28,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-14 23:28:28,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-14 23:28:28,166 INFO L290 TraceCheckUtils]: 0: Hoare triple {889#(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] {883#true} is VALID [2022-04-14 23:28:28,166 INFO L290 TraceCheckUtils]: 1: Hoare triple {883#true} [123] ULTIMATE.initFINAL-->ULTIMATE.initEXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {883#true} is VALID [2022-04-14 23:28:28,166 INFO L284 TraceCheckUtils]: 2: Hoare quadruple {883#true} {883#true} [163] ULTIMATE.initEXIT-->L-1: AOR: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] LVA: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {883#true} is VALID [2022-04-14 23:28:28,167 INFO L272 TraceCheckUtils]: 0: Hoare triple {883#true} [118] ULTIMATE.startENTRY-->ULTIMATE.initENTRY: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {889#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} is VALID [2022-04-14 23:28:28,167 INFO L290 TraceCheckUtils]: 1: Hoare triple {889#(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] {883#true} is VALID [2022-04-14 23:28:28,167 INFO L290 TraceCheckUtils]: 2: Hoare triple {883#true} [123] ULTIMATE.initFINAL-->ULTIMATE.initEXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {883#true} is VALID [2022-04-14 23:28:28,168 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {883#true} {883#true} [163] ULTIMATE.initEXIT-->L-1: AOR: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] LVA: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {883#true} is VALID [2022-04-14 23:28:28,168 INFO L272 TraceCheckUtils]: 4: Hoare triple {883#true} [119] L-1-->mainENTRY: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {883#true} is VALID [2022-04-14 23:28:28,168 INFO L290 TraceCheckUtils]: 5: Hoare triple {883#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] {883#true} is VALID [2022-04-14 23:28:28,168 INFO L290 TraceCheckUtils]: 6: Hoare triple {883#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] {883#true} is VALID [2022-04-14 23:28:28,169 INFO L290 TraceCheckUtils]: 7: Hoare triple {883#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] {883#true} is VALID [2022-04-14 23:28:28,169 INFO L290 TraceCheckUtils]: 8: Hoare triple {883#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[] {883#true} is VALID [2022-04-14 23:28:28,172 INFO L290 TraceCheckUtils]: 9: Hoare triple {883#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[] {888#(= main_~p2~0 0)} is VALID [2022-04-14 23:28:28,173 INFO L290 TraceCheckUtils]: 10: Hoare triple {888#(= 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] {888#(= main_~p2~0 0)} is VALID [2022-04-14 23:28:28,173 INFO L290 TraceCheckUtils]: 11: Hoare triple {888#(= 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] {888#(= main_~p2~0 0)} is VALID [2022-04-14 23:28:28,174 INFO L290 TraceCheckUtils]: 12: Hoare triple {888#(= 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] {888#(= main_~p2~0 0)} is VALID [2022-04-14 23:28:28,175 INFO L290 TraceCheckUtils]: 13: Hoare triple {888#(= 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[] {888#(= main_~p2~0 0)} is VALID [2022-04-14 23:28:28,176 INFO L290 TraceCheckUtils]: 14: Hoare triple {888#(= 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[] {884#false} is VALID [2022-04-14 23:28:28,176 INFO L290 TraceCheckUtils]: 15: Hoare triple {884#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[] {884#false} is VALID [2022-04-14 23:28:28,176 INFO L290 TraceCheckUtils]: 16: Hoare triple {884#false} [147] L86-1-->mainErr0ASSERT_VIOLATIONERROR_FUNCTION: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {884#false} is VALID [2022-04-14 23:28:28,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-14 23:28:28,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-14 23:28:28,177 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [367230395] [2022-04-14 23:28:28,177 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [367230395] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-14 23:28:28,177 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-14 23:28:28,177 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-04-14 23:28:28,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933184572] [2022-04-14 23:28:28,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-14 23:28:28,178 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 [2022-04-14 23:28:28,178 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-14 23:28:28,179 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) [2022-04-14 23:28:28,195 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 17 edges. 17 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-14 23:28:28,196 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-04-14 23:28:28,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-14 23:28:28,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-04-14 23:28:28,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-04-14 23:28:28,197 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) [2022-04-14 23:28:28,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-14 23:28:28,288 INFO L93 Difference]: Finished difference Result 77 states and 116 transitions. [2022-04-14 23:28:28,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-04-14 23:28:28,289 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 [2022-04-14 23:28:28,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-14 23:28:28,289 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) [2022-04-14 23:28:28,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 67 transitions. [2022-04-14 23:28:28,291 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) [2022-04-14 23:28:28,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 67 transitions. [2022-04-14 23:28:28,293 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 4 states and 67 transitions. [2022-04-14 23:28:28,344 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 67 edges. 67 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-14 23:28:28,347 INFO L225 Difference]: With dead ends: 77 [2022-04-14 23:28:28,348 INFO L226 Difference]: Without dead ends: 77 [2022-04-14 23:28:28,348 INFO L912 BasicCegarLoop]: 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 [2022-04-14 23:28:28,350 INFO L913 BasicCegarLoop]: 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 [2022-04-14 23:28:28,357 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [67 Valid, 57 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-14 23:28:28,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2022-04-14 23:28:28,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 75. [2022-04-14 23:28:28,372 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-14 23:28:28,372 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) [2022-04-14 23:28:28,373 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) [2022-04-14 23:28:28,373 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) [2022-04-14 23:28:28,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-14 23:28:28,376 INFO L93 Difference]: Finished difference Result 77 states and 116 transitions. [2022-04-14 23:28:28,376 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 116 transitions. [2022-04-14 23:28:28,379 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-14 23:28:28,380 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-14 23:28:28,382 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. [2022-04-14 23:28:28,382 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. [2022-04-14 23:28:28,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-14 23:28:28,387 INFO L93 Difference]: Finished difference Result 77 states and 116 transitions. [2022-04-14 23:28:28,387 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 116 transitions. [2022-04-14 23:28:28,388 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-14 23:28:28,389 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-14 23:28:28,389 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-14 23:28:28,389 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-14 23:28:28,389 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) [2022-04-14 23:28:28,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 115 transitions. [2022-04-14 23:28:28,392 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 115 transitions. Word has length 17 [2022-04-14 23:28:28,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-14 23:28:28,392 INFO L478 AbstractCegarLoop]: Abstraction has 75 states and 115 transitions. [2022-04-14 23:28:28,392 INFO L479 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) [2022-04-14 23:28:28,392 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 115 transitions. [2022-04-14 23:28:28,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-04-14 23:28:28,393 INFO L491 BasicCegarLoop]: Found error trace [2022-04-14 23:28:28,393 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-14 23:28:28,393 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-04-14 23:28:28,393 INFO L403 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-14 23:28:28,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-14 23:28:28,395 INFO L85 PathProgramCache]: Analyzing trace with hash 1395779414, now seen corresponding path program 1 times [2022-04-14 23:28:28,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-14 23:28:28,396 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [953698246] [2022-04-14 23:28:28,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-14 23:28:28,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-14 23:28:28,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-14 23:28:28,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-14 23:28:28,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-14 23:28:28,468 INFO L290 TraceCheckUtils]: 0: Hoare triple {1207#(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] {1201#true} is VALID [2022-04-14 23:28:28,468 INFO L290 TraceCheckUtils]: 1: Hoare triple {1201#true} [123] ULTIMATE.initFINAL-->ULTIMATE.initEXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {1201#true} is VALID [2022-04-14 23:28:28,469 INFO L284 TraceCheckUtils]: 2: Hoare quadruple {1201#true} {1201#true} [163] ULTIMATE.initEXIT-->L-1: AOR: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] LVA: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {1201#true} is VALID [2022-04-14 23:28:28,469 INFO L272 TraceCheckUtils]: 0: Hoare triple {1201#true} [118] ULTIMATE.startENTRY-->ULTIMATE.initENTRY: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {1207#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} is VALID [2022-04-14 23:28:28,470 INFO L290 TraceCheckUtils]: 1: Hoare triple {1207#(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] {1201#true} is VALID [2022-04-14 23:28:28,470 INFO L290 TraceCheckUtils]: 2: Hoare triple {1201#true} [123] ULTIMATE.initFINAL-->ULTIMATE.initEXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {1201#true} is VALID [2022-04-14 23:28:28,470 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {1201#true} {1201#true} [163] ULTIMATE.initEXIT-->L-1: AOR: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] LVA: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {1201#true} is VALID [2022-04-14 23:28:28,470 INFO L272 TraceCheckUtils]: 4: Hoare triple {1201#true} [119] L-1-->mainENTRY: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {1201#true} is VALID [2022-04-14 23:28:28,470 INFO L290 TraceCheckUtils]: 5: Hoare triple {1201#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] {1201#true} is VALID [2022-04-14 23:28:28,471 INFO L290 TraceCheckUtils]: 6: Hoare triple {1201#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] {1201#true} is VALID [2022-04-14 23:28:28,471 INFO L290 TraceCheckUtils]: 7: Hoare triple {1201#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] {1201#true} is VALID [2022-04-14 23:28:28,471 INFO L290 TraceCheckUtils]: 8: Hoare triple {1201#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[] {1201#true} is VALID [2022-04-14 23:28:28,471 INFO L290 TraceCheckUtils]: 9: Hoare triple {1201#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] {1206#(not (= main_~p2~0 0))} is VALID [2022-04-14 23:28:28,472 INFO L290 TraceCheckUtils]: 10: Hoare triple {1206#(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] {1206#(not (= main_~p2~0 0))} is VALID [2022-04-14 23:28:28,472 INFO L290 TraceCheckUtils]: 11: Hoare triple {1206#(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] {1206#(not (= main_~p2~0 0))} is VALID [2022-04-14 23:28:28,473 INFO L290 TraceCheckUtils]: 12: Hoare triple {1206#(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] {1206#(not (= main_~p2~0 0))} is VALID [2022-04-14 23:28:28,473 INFO L290 TraceCheckUtils]: 13: Hoare triple {1206#(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[] {1206#(not (= main_~p2~0 0))} is VALID [2022-04-14 23:28:28,473 INFO L290 TraceCheckUtils]: 14: Hoare triple {1206#(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[] {1202#false} is VALID [2022-04-14 23:28:28,474 INFO L290 TraceCheckUtils]: 15: Hoare triple {1202#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[] {1202#false} is VALID [2022-04-14 23:28:28,474 INFO L290 TraceCheckUtils]: 16: Hoare triple {1202#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[] {1202#false} is VALID [2022-04-14 23:28:28,474 INFO L290 TraceCheckUtils]: 17: Hoare triple {1202#false} [147] L86-1-->mainErr0ASSERT_VIOLATIONERROR_FUNCTION: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {1202#false} is VALID [2022-04-14 23:28:28,474 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-14 23:28:28,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-14 23:28:28,475 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [953698246] [2022-04-14 23:28:28,475 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [953698246] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-14 23:28:28,475 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-14 23:28:28,475 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-04-14 23:28:28,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945717646] [2022-04-14 23:28:28,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-14 23:28:28,476 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 [2022-04-14 23:28:28,476 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-14 23:28:28,476 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) [2022-04-14 23:28:28,488 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 18 edges. 18 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-14 23:28:28,488 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-04-14 23:28:28,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-14 23:28:28,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-04-14 23:28:28,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-04-14 23:28:28,489 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) [2022-04-14 23:28:28,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-14 23:28:28,604 INFO L93 Difference]: Finished difference Result 79 states and 116 transitions. [2022-04-14 23:28:28,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-04-14 23:28:28,604 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 [2022-04-14 23:28:28,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-14 23:28:28,605 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) [2022-04-14 23:28:28,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 66 transitions. [2022-04-14 23:28:28,607 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) [2022-04-14 23:28:28,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 66 transitions. [2022-04-14 23:28:28,610 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 4 states and 66 transitions. [2022-04-14 23:28:28,672 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 66 edges. 66 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-14 23:28:28,673 INFO L225 Difference]: With dead ends: 79 [2022-04-14 23:28:28,673 INFO L226 Difference]: Without dead ends: 79 [2022-04-14 23:28:28,674 INFO L912 BasicCegarLoop]: 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 [2022-04-14 23:28:28,675 INFO L913 BasicCegarLoop]: 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 [2022-04-14 23:28:28,676 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [65 Valid, 60 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-14 23:28:28,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2022-04-14 23:28:28,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 77. [2022-04-14 23:28:28,679 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-14 23:28:28,680 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) [2022-04-14 23:28:28,680 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) [2022-04-14 23:28:28,681 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) [2022-04-14 23:28:28,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-14 23:28:28,683 INFO L93 Difference]: Finished difference Result 79 states and 116 transitions. [2022-04-14 23:28:28,683 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 116 transitions. [2022-04-14 23:28:28,683 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-14 23:28:28,683 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-14 23:28:28,684 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. [2022-04-14 23:28:28,684 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. [2022-04-14 23:28:28,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-14 23:28:28,686 INFO L93 Difference]: Finished difference Result 79 states and 116 transitions. [2022-04-14 23:28:28,686 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 116 transitions. [2022-04-14 23:28:28,687 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-14 23:28:28,687 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-14 23:28:28,687 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-14 23:28:28,687 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-14 23:28:28,687 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) [2022-04-14 23:28:28,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 115 transitions. [2022-04-14 23:28:28,689 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 115 transitions. Word has length 18 [2022-04-14 23:28:28,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-14 23:28:28,690 INFO L478 AbstractCegarLoop]: Abstraction has 77 states and 115 transitions. [2022-04-14 23:28:28,690 INFO L479 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) [2022-04-14 23:28:28,690 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 115 transitions. [2022-04-14 23:28:28,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-04-14 23:28:28,691 INFO L491 BasicCegarLoop]: Found error trace [2022-04-14 23:28:28,691 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-14 23:28:28,691 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-04-14 23:28:28,691 INFO L403 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-14 23:28:28,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-14 23:28:28,692 INFO L85 PathProgramCache]: Analyzing trace with hash -411675049, now seen corresponding path program 1 times [2022-04-14 23:28:28,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-14 23:28:28,692 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [872505327] [2022-04-14 23:28:28,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-14 23:28:28,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-14 23:28:28,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-14 23:28:28,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-14 23:28:28,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-14 23:28:28,730 INFO L290 TraceCheckUtils]: 0: Hoare triple {1533#(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] {1527#true} is VALID [2022-04-14 23:28:28,730 INFO L290 TraceCheckUtils]: 1: Hoare triple {1527#true} [123] ULTIMATE.initFINAL-->ULTIMATE.initEXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {1527#true} is VALID [2022-04-14 23:28:28,731 INFO L284 TraceCheckUtils]: 2: Hoare quadruple {1527#true} {1527#true} [163] ULTIMATE.initEXIT-->L-1: AOR: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] LVA: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {1527#true} is VALID [2022-04-14 23:28:28,731 INFO L272 TraceCheckUtils]: 0: Hoare triple {1527#true} [118] ULTIMATE.startENTRY-->ULTIMATE.initENTRY: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {1533#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} is VALID [2022-04-14 23:28:28,731 INFO L290 TraceCheckUtils]: 1: Hoare triple {1533#(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] {1527#true} is VALID [2022-04-14 23:28:28,732 INFO L290 TraceCheckUtils]: 2: Hoare triple {1527#true} [123] ULTIMATE.initFINAL-->ULTIMATE.initEXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {1527#true} is VALID [2022-04-14 23:28:28,732 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {1527#true} {1527#true} [163] ULTIMATE.initEXIT-->L-1: AOR: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] LVA: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {1527#true} is VALID [2022-04-14 23:28:28,732 INFO L272 TraceCheckUtils]: 4: Hoare triple {1527#true} [119] L-1-->mainENTRY: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {1527#true} is VALID [2022-04-14 23:28:28,732 INFO L290 TraceCheckUtils]: 5: Hoare triple {1527#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] {1527#true} is VALID [2022-04-14 23:28:28,732 INFO L290 TraceCheckUtils]: 6: Hoare triple {1527#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] {1527#true} is VALID [2022-04-14 23:28:28,733 INFO L290 TraceCheckUtils]: 7: Hoare triple {1527#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] {1527#true} is VALID [2022-04-14 23:28:28,733 INFO L290 TraceCheckUtils]: 8: Hoare triple {1527#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[] {1527#true} is VALID [2022-04-14 23:28:28,733 INFO L290 TraceCheckUtils]: 9: Hoare triple {1527#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[] {1527#true} is VALID [2022-04-14 23:28:28,733 INFO L290 TraceCheckUtils]: 10: Hoare triple {1527#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] {1532#(= main_~lk3~0 1)} is VALID [2022-04-14 23:28:28,734 INFO L290 TraceCheckUtils]: 11: Hoare triple {1532#(= 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] {1532#(= main_~lk3~0 1)} is VALID [2022-04-14 23:28:28,734 INFO L290 TraceCheckUtils]: 12: Hoare triple {1532#(= 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] {1532#(= main_~lk3~0 1)} is VALID [2022-04-14 23:28:28,735 INFO L290 TraceCheckUtils]: 13: Hoare triple {1532#(= 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[] {1532#(= main_~lk3~0 1)} is VALID [2022-04-14 23:28:28,735 INFO L290 TraceCheckUtils]: 14: Hoare triple {1532#(= 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[] {1532#(= main_~lk3~0 1)} is VALID [2022-04-14 23:28:28,735 INFO L290 TraceCheckUtils]: 15: Hoare triple {1532#(= 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[] {1532#(= main_~lk3~0 1)} is VALID [2022-04-14 23:28:28,736 INFO L290 TraceCheckUtils]: 16: Hoare triple {1532#(= 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[] {1528#false} is VALID [2022-04-14 23:28:28,736 INFO L290 TraceCheckUtils]: 17: Hoare triple {1528#false} [147] L86-1-->mainErr0ASSERT_VIOLATIONERROR_FUNCTION: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {1528#false} is VALID [2022-04-14 23:28:28,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-14 23:28:28,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-14 23:28:28,737 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [872505327] [2022-04-14 23:28:28,737 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [872505327] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-14 23:28:28,737 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-14 23:28:28,737 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-04-14 23:28:28,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120219047] [2022-04-14 23:28:28,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-14 23:28:28,738 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 [2022-04-14 23:28:28,738 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-14 23:28:28,738 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) [2022-04-14 23:28:28,750 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 18 edges. 18 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-14 23:28:28,750 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-04-14 23:28:28,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-14 23:28:28,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-04-14 23:28:28,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-04-14 23:28:28,751 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) [2022-04-14 23:28:28,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-14 23:28:28,854 INFO L93 Difference]: Finished difference Result 131 states and 196 transitions. [2022-04-14 23:28:28,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-04-14 23:28:28,854 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 [2022-04-14 23:28:28,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-14 23:28:28,854 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) [2022-04-14 23:28:28,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 62 transitions. [2022-04-14 23:28:28,856 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) [2022-04-14 23:28:28,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 62 transitions. [2022-04-14 23:28:28,857 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 4 states and 62 transitions. [2022-04-14 23:28:28,910 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 62 edges. 62 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-14 23:28:28,912 INFO L225 Difference]: With dead ends: 131 [2022-04-14 23:28:28,913 INFO L226 Difference]: Without dead ends: 131 [2022-04-14 23:28:28,913 INFO L912 BasicCegarLoop]: 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 [2022-04-14 23:28:28,914 INFO L913 BasicCegarLoop]: 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 [2022-04-14 23:28:28,914 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [69 Valid, 46 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-14 23:28:28,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2022-04-14 23:28:28,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 105. [2022-04-14 23:28:28,918 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-14 23:28:28,919 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) [2022-04-14 23:28:28,919 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) [2022-04-14 23:28:28,920 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) [2022-04-14 23:28:28,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-14 23:28:28,923 INFO L93 Difference]: Finished difference Result 131 states and 196 transitions. [2022-04-14 23:28:28,923 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 196 transitions. [2022-04-14 23:28:28,924 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-14 23:28:28,924 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-14 23:28:28,924 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. [2022-04-14 23:28:28,925 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. [2022-04-14 23:28:28,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-14 23:28:28,928 INFO L93 Difference]: Finished difference Result 131 states and 196 transitions. [2022-04-14 23:28:28,928 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 196 transitions. [2022-04-14 23:28:28,928 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-14 23:28:28,928 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-14 23:28:28,929 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-14 23:28:28,929 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-14 23:28:28,929 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) [2022-04-14 23:28:28,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 155 transitions. [2022-04-14 23:28:28,932 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 155 transitions. Word has length 18 [2022-04-14 23:28:28,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-14 23:28:28,932 INFO L478 AbstractCegarLoop]: Abstraction has 105 states and 155 transitions. [2022-04-14 23:28:28,932 INFO L479 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) [2022-04-14 23:28:28,932 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 155 transitions. [2022-04-14 23:28:28,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-04-14 23:28:28,933 INFO L491 BasicCegarLoop]: Found error trace [2022-04-14 23:28:28,933 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-14 23:28:28,933 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-04-14 23:28:28,933 INFO L403 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-14 23:28:28,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-14 23:28:28,934 INFO L85 PathProgramCache]: Analyzing trace with hash 1331135286, now seen corresponding path program 1 times [2022-04-14 23:28:28,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-14 23:28:28,934 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [717076438] [2022-04-14 23:28:28,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-14 23:28:28,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-14 23:28:28,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-14 23:28:28,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-14 23:28:28,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-14 23:28:28,970 INFO L290 TraceCheckUtils]: 0: Hoare triple {2043#(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] {2037#true} is VALID [2022-04-14 23:28:28,970 INFO L290 TraceCheckUtils]: 1: Hoare triple {2037#true} [123] ULTIMATE.initFINAL-->ULTIMATE.initEXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {2037#true} is VALID [2022-04-14 23:28:28,970 INFO L284 TraceCheckUtils]: 2: Hoare quadruple {2037#true} {2037#true} [163] ULTIMATE.initEXIT-->L-1: AOR: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] LVA: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {2037#true} is VALID [2022-04-14 23:28:28,971 INFO L272 TraceCheckUtils]: 0: Hoare triple {2037#true} [118] ULTIMATE.startENTRY-->ULTIMATE.initENTRY: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {2043#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} is VALID [2022-04-14 23:28:28,971 INFO L290 TraceCheckUtils]: 1: Hoare triple {2043#(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] {2037#true} is VALID [2022-04-14 23:28:28,971 INFO L290 TraceCheckUtils]: 2: Hoare triple {2037#true} [123] ULTIMATE.initFINAL-->ULTIMATE.initEXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {2037#true} is VALID [2022-04-14 23:28:28,972 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {2037#true} {2037#true} [163] ULTIMATE.initEXIT-->L-1: AOR: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] LVA: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {2037#true} is VALID [2022-04-14 23:28:28,972 INFO L272 TraceCheckUtils]: 4: Hoare triple {2037#true} [119] L-1-->mainENTRY: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {2037#true} is VALID [2022-04-14 23:28:28,972 INFO L290 TraceCheckUtils]: 5: Hoare triple {2037#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] {2037#true} is VALID [2022-04-14 23:28:28,972 INFO L290 TraceCheckUtils]: 6: Hoare triple {2037#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] {2037#true} is VALID [2022-04-14 23:28:28,972 INFO L290 TraceCheckUtils]: 7: Hoare triple {2037#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] {2037#true} is VALID [2022-04-14 23:28:28,973 INFO L290 TraceCheckUtils]: 8: Hoare triple {2037#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[] {2037#true} is VALID [2022-04-14 23:28:28,973 INFO L290 TraceCheckUtils]: 9: Hoare triple {2037#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[] {2037#true} is VALID [2022-04-14 23:28:28,973 INFO L290 TraceCheckUtils]: 10: Hoare triple {2037#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[] {2042#(= main_~p3~0 0)} is VALID [2022-04-14 23:28:28,974 INFO L290 TraceCheckUtils]: 11: Hoare triple {2042#(= 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] {2042#(= main_~p3~0 0)} is VALID [2022-04-14 23:28:28,974 INFO L290 TraceCheckUtils]: 12: Hoare triple {2042#(= 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] {2042#(= main_~p3~0 0)} is VALID [2022-04-14 23:28:28,974 INFO L290 TraceCheckUtils]: 13: Hoare triple {2042#(= 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[] {2042#(= main_~p3~0 0)} is VALID [2022-04-14 23:28:28,975 INFO L290 TraceCheckUtils]: 14: Hoare triple {2042#(= 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[] {2042#(= main_~p3~0 0)} is VALID [2022-04-14 23:28:28,975 INFO L290 TraceCheckUtils]: 15: Hoare triple {2042#(= 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[] {2038#false} is VALID [2022-04-14 23:28:28,975 INFO L290 TraceCheckUtils]: 16: Hoare triple {2038#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[] {2038#false} is VALID [2022-04-14 23:28:28,976 INFO L290 TraceCheckUtils]: 17: Hoare triple {2038#false} [147] L86-1-->mainErr0ASSERT_VIOLATIONERROR_FUNCTION: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {2038#false} is VALID [2022-04-14 23:28:28,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-14 23:28:28,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-14 23:28:28,976 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [717076438] [2022-04-14 23:28:28,976 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [717076438] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-14 23:28:28,976 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-14 23:28:28,976 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-04-14 23:28:28,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711957802] [2022-04-14 23:28:28,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-14 23:28:28,977 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 [2022-04-14 23:28:28,977 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-14 23:28:28,978 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) [2022-04-14 23:28:28,990 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 18 edges. 18 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-14 23:28:28,990 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-04-14 23:28:28,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-14 23:28:28,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-04-14 23:28:28,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-04-14 23:28:28,991 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) [2022-04-14 23:28:29,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-14 23:28:29,076 INFO L93 Difference]: Finished difference Result 139 states and 196 transitions. [2022-04-14 23:28:29,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-04-14 23:28:29,076 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 [2022-04-14 23:28:29,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-14 23:28:29,077 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) [2022-04-14 23:28:29,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 65 transitions. [2022-04-14 23:28:29,078 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) [2022-04-14 23:28:29,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 65 transitions. [2022-04-14 23:28:29,079 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 4 states and 65 transitions. [2022-04-14 23:28:29,126 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 65 edges. 65 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-14 23:28:29,128 INFO L225 Difference]: With dead ends: 139 [2022-04-14 23:28:29,128 INFO L226 Difference]: Without dead ends: 139 [2022-04-14 23:28:29,128 INFO L912 BasicCegarLoop]: 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 [2022-04-14 23:28:29,129 INFO L913 BasicCegarLoop]: 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 [2022-04-14 23:28:29,129 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [61 Valid, 59 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-14 23:28:29,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2022-04-14 23:28:29,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 137. [2022-04-14 23:28:29,133 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-14 23:28:29,134 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) [2022-04-14 23:28:29,134 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) [2022-04-14 23:28:29,135 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) [2022-04-14 23:28:29,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-14 23:28:29,138 INFO L93 Difference]: Finished difference Result 139 states and 196 transitions. [2022-04-14 23:28:29,138 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 196 transitions. [2022-04-14 23:28:29,138 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-14 23:28:29,138 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-14 23:28:29,139 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. [2022-04-14 23:28:29,139 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. [2022-04-14 23:28:29,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-14 23:28:29,142 INFO L93 Difference]: Finished difference Result 139 states and 196 transitions. [2022-04-14 23:28:29,143 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 196 transitions. [2022-04-14 23:28:29,143 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-14 23:28:29,143 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-14 23:28:29,143 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-14 23:28:29,143 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-14 23:28:29,144 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) [2022-04-14 23:28:29,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 195 transitions. [2022-04-14 23:28:29,147 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 195 transitions. Word has length 18 [2022-04-14 23:28:29,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-14 23:28:29,147 INFO L478 AbstractCegarLoop]: Abstraction has 137 states and 195 transitions. [2022-04-14 23:28:29,147 INFO L479 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) [2022-04-14 23:28:29,147 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 195 transitions. [2022-04-14 23:28:29,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-04-14 23:28:29,148 INFO L491 BasicCegarLoop]: Found error trace [2022-04-14 23:28:29,148 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-14 23:28:29,148 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-04-14 23:28:29,148 INFO L403 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-14 23:28:29,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-14 23:28:29,149 INFO L85 PathProgramCache]: Analyzing trace with hash 123007539, now seen corresponding path program 1 times [2022-04-14 23:28:29,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-14 23:28:29,149 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [648837125] [2022-04-14 23:28:29,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-14 23:28:29,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-14 23:28:29,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-14 23:28:29,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-14 23:28:29,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-14 23:28:29,179 INFO L290 TraceCheckUtils]: 0: Hoare triple {2609#(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] {2603#true} is VALID [2022-04-14 23:28:29,179 INFO L290 TraceCheckUtils]: 1: Hoare triple {2603#true} [123] ULTIMATE.initFINAL-->ULTIMATE.initEXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {2603#true} is VALID [2022-04-14 23:28:29,179 INFO L284 TraceCheckUtils]: 2: Hoare quadruple {2603#true} {2603#true} [163] ULTIMATE.initEXIT-->L-1: AOR: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] LVA: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {2603#true} is VALID [2022-04-14 23:28:29,180 INFO L272 TraceCheckUtils]: 0: Hoare triple {2603#true} [118] ULTIMATE.startENTRY-->ULTIMATE.initENTRY: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {2609#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} is VALID [2022-04-14 23:28:29,180 INFO L290 TraceCheckUtils]: 1: Hoare triple {2609#(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] {2603#true} is VALID [2022-04-14 23:28:29,180 INFO L290 TraceCheckUtils]: 2: Hoare triple {2603#true} [123] ULTIMATE.initFINAL-->ULTIMATE.initEXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {2603#true} is VALID [2022-04-14 23:28:29,180 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {2603#true} {2603#true} [163] ULTIMATE.initEXIT-->L-1: AOR: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] LVA: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {2603#true} is VALID [2022-04-14 23:28:29,180 INFO L272 TraceCheckUtils]: 4: Hoare triple {2603#true} [119] L-1-->mainENTRY: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {2603#true} is VALID [2022-04-14 23:28:29,180 INFO L290 TraceCheckUtils]: 5: Hoare triple {2603#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] {2603#true} is VALID [2022-04-14 23:28:29,181 INFO L290 TraceCheckUtils]: 6: Hoare triple {2603#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] {2603#true} is VALID [2022-04-14 23:28:29,181 INFO L290 TraceCheckUtils]: 7: Hoare triple {2603#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] {2603#true} is VALID [2022-04-14 23:28:29,181 INFO L290 TraceCheckUtils]: 8: Hoare triple {2603#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[] {2603#true} is VALID [2022-04-14 23:28:29,181 INFO L290 TraceCheckUtils]: 9: Hoare triple {2603#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[] {2603#true} is VALID [2022-04-14 23:28:29,182 INFO L290 TraceCheckUtils]: 10: Hoare triple {2603#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] {2608#(not (= main_~p3~0 0))} is VALID [2022-04-14 23:28:29,182 INFO L290 TraceCheckUtils]: 11: Hoare triple {2608#(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] {2608#(not (= main_~p3~0 0))} is VALID [2022-04-14 23:28:29,182 INFO L290 TraceCheckUtils]: 12: Hoare triple {2608#(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] {2608#(not (= main_~p3~0 0))} is VALID [2022-04-14 23:28:29,183 INFO L290 TraceCheckUtils]: 13: Hoare triple {2608#(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[] {2608#(not (= main_~p3~0 0))} is VALID [2022-04-14 23:28:29,183 INFO L290 TraceCheckUtils]: 14: Hoare triple {2608#(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[] {2608#(not (= main_~p3~0 0))} is VALID [2022-04-14 23:28:29,183 INFO L290 TraceCheckUtils]: 15: Hoare triple {2608#(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[] {2604#false} is VALID [2022-04-14 23:28:29,183 INFO L290 TraceCheckUtils]: 16: Hoare triple {2604#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[] {2604#false} is VALID [2022-04-14 23:28:29,184 INFO L290 TraceCheckUtils]: 17: Hoare triple {2604#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[] {2604#false} is VALID [2022-04-14 23:28:29,184 INFO L290 TraceCheckUtils]: 18: Hoare triple {2604#false} [147] L86-1-->mainErr0ASSERT_VIOLATIONERROR_FUNCTION: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {2604#false} is VALID [2022-04-14 23:28:29,184 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-14 23:28:29,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-14 23:28:29,184 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [648837125] [2022-04-14 23:28:29,184 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [648837125] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-14 23:28:29,184 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-14 23:28:29,185 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-04-14 23:28:29,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531642019] [2022-04-14 23:28:29,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-14 23:28:29,185 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 [2022-04-14 23:28:29,185 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-14 23:28:29,185 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) [2022-04-14 23:28:29,197 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 19 edges. 19 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-14 23:28:29,198 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-04-14 23:28:29,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-14 23:28:29,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-04-14 23:28:29,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-04-14 23:28:29,198 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) [2022-04-14 23:28:29,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-14 23:28:29,282 INFO L93 Difference]: Finished difference Result 143 states and 196 transitions. [2022-04-14 23:28:29,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-04-14 23:28:29,283 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 [2022-04-14 23:28:29,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-14 23:28:29,283 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) [2022-04-14 23:28:29,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 64 transitions. [2022-04-14 23:28:29,284 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) [2022-04-14 23:28:29,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 64 transitions. [2022-04-14 23:28:29,285 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 4 states and 64 transitions. [2022-04-14 23:28:29,347 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 64 edges. 64 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-14 23:28:29,349 INFO L225 Difference]: With dead ends: 143 [2022-04-14 23:28:29,349 INFO L226 Difference]: Without dead ends: 143 [2022-04-14 23:28:29,349 INFO L912 BasicCegarLoop]: 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 [2022-04-14 23:28:29,352 INFO L913 BasicCegarLoop]: 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 [2022-04-14 23:28:29,352 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [64 Valid, 57 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-14 23:28:29,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2022-04-14 23:28:29,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 141. [2022-04-14 23:28:29,359 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-14 23:28:29,360 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) [2022-04-14 23:28:29,360 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) [2022-04-14 23:28:29,360 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) [2022-04-14 23:28:29,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-14 23:28:29,364 INFO L93 Difference]: Finished difference Result 143 states and 196 transitions. [2022-04-14 23:28:29,364 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 196 transitions. [2022-04-14 23:28:29,364 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-14 23:28:29,364 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-14 23:28:29,364 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. [2022-04-14 23:28:29,365 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. [2022-04-14 23:28:29,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-14 23:28:29,378 INFO L93 Difference]: Finished difference Result 143 states and 196 transitions. [2022-04-14 23:28:29,378 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 196 transitions. [2022-04-14 23:28:29,379 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-14 23:28:29,379 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-14 23:28:29,379 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-14 23:28:29,379 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-14 23:28:29,379 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) [2022-04-14 23:28:29,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 195 transitions. [2022-04-14 23:28:29,382 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 195 transitions. Word has length 19 [2022-04-14 23:28:29,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-14 23:28:29,382 INFO L478 AbstractCegarLoop]: Abstraction has 141 states and 195 transitions. [2022-04-14 23:28:29,382 INFO L479 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) [2022-04-14 23:28:29,382 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 195 transitions. [2022-04-14 23:28:29,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-04-14 23:28:29,383 INFO L491 BasicCegarLoop]: Found error trace [2022-04-14 23:28:29,383 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-14 23:28:29,383 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-04-14 23:28:29,383 INFO L403 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-14 23:28:29,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-14 23:28:29,384 INFO L85 PathProgramCache]: Analyzing trace with hash -1684446924, now seen corresponding path program 1 times [2022-04-14 23:28:29,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-14 23:28:29,384 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1750783140] [2022-04-14 23:28:29,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-14 23:28:29,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-14 23:28:29,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-14 23:28:29,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-14 23:28:29,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-14 23:28:29,429 INFO L290 TraceCheckUtils]: 0: Hoare triple {3191#(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] {3185#true} is VALID [2022-04-14 23:28:29,431 INFO L290 TraceCheckUtils]: 1: Hoare triple {3185#true} [123] ULTIMATE.initFINAL-->ULTIMATE.initEXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {3185#true} is VALID [2022-04-14 23:28:29,433 INFO L284 TraceCheckUtils]: 2: Hoare quadruple {3185#true} {3185#true} [163] ULTIMATE.initEXIT-->L-1: AOR: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] LVA: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {3185#true} is VALID [2022-04-14 23:28:29,434 INFO L272 TraceCheckUtils]: 0: Hoare triple {3185#true} [118] ULTIMATE.startENTRY-->ULTIMATE.initENTRY: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {3191#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} is VALID [2022-04-14 23:28:29,434 INFO L290 TraceCheckUtils]: 1: Hoare triple {3191#(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] {3185#true} is VALID [2022-04-14 23:28:29,434 INFO L290 TraceCheckUtils]: 2: Hoare triple {3185#true} [123] ULTIMATE.initFINAL-->ULTIMATE.initEXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {3185#true} is VALID [2022-04-14 23:28:29,434 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {3185#true} {3185#true} [163] ULTIMATE.initEXIT-->L-1: AOR: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] LVA: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {3185#true} is VALID [2022-04-14 23:28:29,435 INFO L272 TraceCheckUtils]: 4: Hoare triple {3185#true} [119] L-1-->mainENTRY: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {3185#true} is VALID [2022-04-14 23:28:29,435 INFO L290 TraceCheckUtils]: 5: Hoare triple {3185#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] {3185#true} is VALID [2022-04-14 23:28:29,435 INFO L290 TraceCheckUtils]: 6: Hoare triple {3185#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] {3185#true} is VALID [2022-04-14 23:28:29,435 INFO L290 TraceCheckUtils]: 7: Hoare triple {3185#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] {3185#true} is VALID [2022-04-14 23:28:29,435 INFO L290 TraceCheckUtils]: 8: Hoare triple {3185#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[] {3185#true} is VALID [2022-04-14 23:28:29,435 INFO L290 TraceCheckUtils]: 9: Hoare triple {3185#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[] {3185#true} is VALID [2022-04-14 23:28:29,436 INFO L290 TraceCheckUtils]: 10: Hoare triple {3185#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[] {3185#true} is VALID [2022-04-14 23:28:29,436 INFO L290 TraceCheckUtils]: 11: Hoare triple {3185#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] {3190#(= main_~lk4~0 1)} is VALID [2022-04-14 23:28:29,436 INFO L290 TraceCheckUtils]: 12: Hoare triple {3190#(= 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] {3190#(= main_~lk4~0 1)} is VALID [2022-04-14 23:28:29,439 INFO L290 TraceCheckUtils]: 13: Hoare triple {3190#(= 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[] {3190#(= main_~lk4~0 1)} is VALID [2022-04-14 23:28:29,440 INFO L290 TraceCheckUtils]: 14: Hoare triple {3190#(= 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[] {3190#(= main_~lk4~0 1)} is VALID [2022-04-14 23:28:29,440 INFO L290 TraceCheckUtils]: 15: Hoare triple {3190#(= 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[] {3190#(= main_~lk4~0 1)} is VALID [2022-04-14 23:28:29,440 INFO L290 TraceCheckUtils]: 16: Hoare triple {3190#(= 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[] {3190#(= main_~lk4~0 1)} is VALID [2022-04-14 23:28:29,442 INFO L290 TraceCheckUtils]: 17: Hoare triple {3190#(= 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[] {3186#false} is VALID [2022-04-14 23:28:29,443 INFO L290 TraceCheckUtils]: 18: Hoare triple {3186#false} [147] L86-1-->mainErr0ASSERT_VIOLATIONERROR_FUNCTION: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {3186#false} is VALID [2022-04-14 23:28:29,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-14 23:28:29,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-14 23:28:29,444 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1750783140] [2022-04-14 23:28:29,444 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1750783140] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-14 23:28:29,444 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-14 23:28:29,444 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-04-14 23:28:29,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972990395] [2022-04-14 23:28:29,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-14 23:28:29,444 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 [2022-04-14 23:28:29,445 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-14 23:28:29,445 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) [2022-04-14 23:28:29,456 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 19 edges. 19 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-14 23:28:29,456 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-04-14 23:28:29,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-14 23:28:29,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-04-14 23:28:29,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-04-14 23:28:29,457 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) [2022-04-14 23:28:29,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-14 23:28:29,539 INFO L93 Difference]: Finished difference Result 235 states and 320 transitions. [2022-04-14 23:28:29,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-04-14 23:28:29,539 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 [2022-04-14 23:28:29,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-14 23:28:29,539 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) [2022-04-14 23:28:29,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 58 transitions. [2022-04-14 23:28:29,540 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) [2022-04-14 23:28:29,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 58 transitions. [2022-04-14 23:28:29,541 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 4 states and 58 transitions. [2022-04-14 23:28:29,593 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 58 edges. 58 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-14 23:28:29,597 INFO L225 Difference]: With dead ends: 235 [2022-04-14 23:28:29,597 INFO L226 Difference]: Without dead ends: 235 [2022-04-14 23:28:29,597 INFO L912 BasicCegarLoop]: 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 [2022-04-14 23:28:29,598 INFO L913 BasicCegarLoop]: 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 [2022-04-14 23:28:29,599 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [62 Valid, 45 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-14 23:28:29,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2022-04-14 23:28:29,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 201. [2022-04-14 23:28:29,605 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-14 23:28:29,606 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) [2022-04-14 23:28:29,606 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) [2022-04-14 23:28:29,608 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) [2022-04-14 23:28:29,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-14 23:28:29,612 INFO L93 Difference]: Finished difference Result 235 states and 320 transitions. [2022-04-14 23:28:29,612 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 320 transitions. [2022-04-14 23:28:29,613 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-14 23:28:29,613 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-14 23:28:29,614 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. [2022-04-14 23:28:29,615 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. [2022-04-14 23:28:29,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-14 23:28:29,628 INFO L93 Difference]: Finished difference Result 235 states and 320 transitions. [2022-04-14 23:28:29,628 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 320 transitions. [2022-04-14 23:28:29,628 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-14 23:28:29,629 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-14 23:28:29,629 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-14 23:28:29,629 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-14 23:28:29,629 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) [2022-04-14 23:28:29,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 271 transitions. [2022-04-14 23:28:29,633 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 271 transitions. Word has length 19 [2022-04-14 23:28:29,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-14 23:28:29,633 INFO L478 AbstractCegarLoop]: Abstraction has 201 states and 271 transitions. [2022-04-14 23:28:29,633 INFO L479 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) [2022-04-14 23:28:29,633 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 271 transitions. [2022-04-14 23:28:29,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-04-14 23:28:29,634 INFO L491 BasicCegarLoop]: Found error trace [2022-04-14 23:28:29,634 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-14 23:28:29,634 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-04-14 23:28:29,634 INFO L403 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-14 23:28:29,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-14 23:28:29,634 INFO L85 PathProgramCache]: Analyzing trace with hash 58363411, now seen corresponding path program 1 times [2022-04-14 23:28:29,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-14 23:28:29,635 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055207375] [2022-04-14 23:28:29,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-14 23:28:29,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-14 23:28:29,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-14 23:28:29,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-14 23:28:29,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-14 23:28:29,692 INFO L290 TraceCheckUtils]: 0: Hoare triple {4109#(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] {4103#true} is VALID [2022-04-14 23:28:29,692 INFO L290 TraceCheckUtils]: 1: Hoare triple {4103#true} [123] ULTIMATE.initFINAL-->ULTIMATE.initEXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {4103#true} is VALID [2022-04-14 23:28:29,692 INFO L284 TraceCheckUtils]: 2: Hoare quadruple {4103#true} {4103#true} [163] ULTIMATE.initEXIT-->L-1: AOR: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] LVA: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {4103#true} is VALID [2022-04-14 23:28:29,693 INFO L272 TraceCheckUtils]: 0: Hoare triple {4103#true} [118] ULTIMATE.startENTRY-->ULTIMATE.initENTRY: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {4109#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} is VALID [2022-04-14 23:28:29,693 INFO L290 TraceCheckUtils]: 1: Hoare triple {4109#(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] {4103#true} is VALID [2022-04-14 23:28:29,693 INFO L290 TraceCheckUtils]: 2: Hoare triple {4103#true} [123] ULTIMATE.initFINAL-->ULTIMATE.initEXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {4103#true} is VALID [2022-04-14 23:28:29,693 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {4103#true} {4103#true} [163] ULTIMATE.initEXIT-->L-1: AOR: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] LVA: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {4103#true} is VALID [2022-04-14 23:28:29,694 INFO L272 TraceCheckUtils]: 4: Hoare triple {4103#true} [119] L-1-->mainENTRY: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {4103#true} is VALID [2022-04-14 23:28:29,694 INFO L290 TraceCheckUtils]: 5: Hoare triple {4103#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] {4103#true} is VALID [2022-04-14 23:28:29,694 INFO L290 TraceCheckUtils]: 6: Hoare triple {4103#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] {4103#true} is VALID [2022-04-14 23:28:29,694 INFO L290 TraceCheckUtils]: 7: Hoare triple {4103#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] {4103#true} is VALID [2022-04-14 23:28:29,694 INFO L290 TraceCheckUtils]: 8: Hoare triple {4103#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[] {4103#true} is VALID [2022-04-14 23:28:29,694 INFO L290 TraceCheckUtils]: 9: Hoare triple {4103#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[] {4103#true} is VALID [2022-04-14 23:28:29,694 INFO L290 TraceCheckUtils]: 10: Hoare triple {4103#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[] {4103#true} is VALID [2022-04-14 23:28:29,695 INFO L290 TraceCheckUtils]: 11: Hoare triple {4103#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[] {4108#(= main_~p4~0 0)} is VALID [2022-04-14 23:28:29,695 INFO L290 TraceCheckUtils]: 12: Hoare triple {4108#(= 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] {4108#(= main_~p4~0 0)} is VALID [2022-04-14 23:28:29,695 INFO L290 TraceCheckUtils]: 13: Hoare triple {4108#(= 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[] {4108#(= main_~p4~0 0)} is VALID [2022-04-14 23:28:29,696 INFO L290 TraceCheckUtils]: 14: Hoare triple {4108#(= 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[] {4108#(= main_~p4~0 0)} is VALID [2022-04-14 23:28:29,696 INFO L290 TraceCheckUtils]: 15: Hoare triple {4108#(= 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[] {4108#(= main_~p4~0 0)} is VALID [2022-04-14 23:28:29,696 INFO L290 TraceCheckUtils]: 16: Hoare triple {4108#(= 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[] {4104#false} is VALID [2022-04-14 23:28:29,697 INFO L290 TraceCheckUtils]: 17: Hoare triple {4104#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[] {4104#false} is VALID [2022-04-14 23:28:29,697 INFO L290 TraceCheckUtils]: 18: Hoare triple {4104#false} [147] L86-1-->mainErr0ASSERT_VIOLATIONERROR_FUNCTION: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {4104#false} is VALID [2022-04-14 23:28:29,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-14 23:28:29,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-14 23:28:29,697 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2055207375] [2022-04-14 23:28:29,697 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2055207375] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-14 23:28:29,697 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-14 23:28:29,698 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-04-14 23:28:29,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779182343] [2022-04-14 23:28:29,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-14 23:28:29,698 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 [2022-04-14 23:28:29,698 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-14 23:28:29,698 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) [2022-04-14 23:28:29,710 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 19 edges. 19 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-14 23:28:29,710 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-04-14 23:28:29,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-14 23:28:29,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-04-14 23:28:29,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-04-14 23:28:29,711 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) [2022-04-14 23:28:29,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-14 23:28:29,806 INFO L93 Difference]: Finished difference Result 259 states and 328 transitions. [2022-04-14 23:28:29,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-04-14 23:28:29,806 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 [2022-04-14 23:28:29,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-14 23:28:29,806 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) [2022-04-14 23:28:29,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 63 transitions. [2022-04-14 23:28:29,807 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) [2022-04-14 23:28:29,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 63 transitions. [2022-04-14 23:28:29,808 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 4 states and 63 transitions. [2022-04-14 23:28:29,859 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 63 edges. 63 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-14 23:28:29,863 INFO L225 Difference]: With dead ends: 259 [2022-04-14 23:28:29,863 INFO L226 Difference]: Without dead ends: 259 [2022-04-14 23:28:29,863 INFO L912 BasicCegarLoop]: 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 [2022-04-14 23:28:29,864 INFO L913 BasicCegarLoop]: 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 [2022-04-14 23:28:29,864 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [55 Valid, 61 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-14 23:28:29,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2022-04-14 23:28:29,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 257. [2022-04-14 23:28:29,868 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-14 23:28:29,869 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) [2022-04-14 23:28:29,869 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) [2022-04-14 23:28:29,870 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) [2022-04-14 23:28:29,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-14 23:28:29,875 INFO L93 Difference]: Finished difference Result 259 states and 328 transitions. [2022-04-14 23:28:29,875 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 328 transitions. [2022-04-14 23:28:29,875 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-14 23:28:29,875 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-14 23:28:29,876 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. [2022-04-14 23:28:29,876 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. [2022-04-14 23:28:29,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-14 23:28:29,881 INFO L93 Difference]: Finished difference Result 259 states and 328 transitions. [2022-04-14 23:28:29,881 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 328 transitions. [2022-04-14 23:28:29,881 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-14 23:28:29,882 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-14 23:28:29,882 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-14 23:28:29,882 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-14 23:28:29,882 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) [2022-04-14 23:28:29,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 327 transitions. [2022-04-14 23:28:29,887 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 327 transitions. Word has length 19 [2022-04-14 23:28:29,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-14 23:28:29,887 INFO L478 AbstractCegarLoop]: Abstraction has 257 states and 327 transitions. [2022-04-14 23:28:29,887 INFO L479 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) [2022-04-14 23:28:29,887 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 327 transitions. [2022-04-14 23:28:29,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-04-14 23:28:29,888 INFO L491 BasicCegarLoop]: Found error trace [2022-04-14 23:28:29,888 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-14 23:28:29,888 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-04-14 23:28:29,888 INFO L403 AbstractCegarLoop]: === Iteration 12 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-14 23:28:29,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-14 23:28:29,888 INFO L85 PathProgramCache]: Analyzing trace with hash -678214798, now seen corresponding path program 1 times [2022-04-14 23:28:29,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-14 23:28:29,889 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [345034906] [2022-04-14 23:28:29,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-14 23:28:29,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-14 23:28:29,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-14 23:28:29,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-14 23:28:29,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-14 23:28:29,918 INFO L290 TraceCheckUtils]: 0: Hoare triple {5155#(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] {5149#true} is VALID [2022-04-14 23:28:29,918 INFO L290 TraceCheckUtils]: 1: Hoare triple {5149#true} [123] ULTIMATE.initFINAL-->ULTIMATE.initEXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {5149#true} is VALID [2022-04-14 23:28:29,918 INFO L284 TraceCheckUtils]: 2: Hoare quadruple {5149#true} {5149#true} [163] ULTIMATE.initEXIT-->L-1: AOR: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] LVA: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {5149#true} is VALID [2022-04-14 23:28:29,919 INFO L272 TraceCheckUtils]: 0: Hoare triple {5149#true} [118] ULTIMATE.startENTRY-->ULTIMATE.initENTRY: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {5155#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} is VALID [2022-04-14 23:28:29,919 INFO L290 TraceCheckUtils]: 1: Hoare triple {5155#(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] {5149#true} is VALID [2022-04-14 23:28:29,919 INFO L290 TraceCheckUtils]: 2: Hoare triple {5149#true} [123] ULTIMATE.initFINAL-->ULTIMATE.initEXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {5149#true} is VALID [2022-04-14 23:28:29,919 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {5149#true} {5149#true} [163] ULTIMATE.initEXIT-->L-1: AOR: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] LVA: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {5149#true} is VALID [2022-04-14 23:28:29,919 INFO L272 TraceCheckUtils]: 4: Hoare triple {5149#true} [119] L-1-->mainENTRY: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {5149#true} is VALID [2022-04-14 23:28:29,919 INFO L290 TraceCheckUtils]: 5: Hoare triple {5149#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] {5149#true} is VALID [2022-04-14 23:28:29,920 INFO L290 TraceCheckUtils]: 6: Hoare triple {5149#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] {5149#true} is VALID [2022-04-14 23:28:29,920 INFO L290 TraceCheckUtils]: 7: Hoare triple {5149#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] {5149#true} is VALID [2022-04-14 23:28:29,920 INFO L290 TraceCheckUtils]: 8: Hoare triple {5149#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[] {5149#true} is VALID [2022-04-14 23:28:29,920 INFO L290 TraceCheckUtils]: 9: Hoare triple {5149#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[] {5149#true} is VALID [2022-04-14 23:28:29,920 INFO L290 TraceCheckUtils]: 10: Hoare triple {5149#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[] {5149#true} is VALID [2022-04-14 23:28:29,921 INFO L290 TraceCheckUtils]: 11: Hoare triple {5149#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] {5154#(not (= main_~p4~0 0))} is VALID [2022-04-14 23:28:29,921 INFO L290 TraceCheckUtils]: 12: Hoare triple {5154#(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] {5154#(not (= main_~p4~0 0))} is VALID [2022-04-14 23:28:29,921 INFO L290 TraceCheckUtils]: 13: Hoare triple {5154#(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[] {5154#(not (= main_~p4~0 0))} is VALID [2022-04-14 23:28:29,922 INFO L290 TraceCheckUtils]: 14: Hoare triple {5154#(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[] {5154#(not (= main_~p4~0 0))} is VALID [2022-04-14 23:28:29,922 INFO L290 TraceCheckUtils]: 15: Hoare triple {5154#(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[] {5154#(not (= main_~p4~0 0))} is VALID [2022-04-14 23:28:29,922 INFO L290 TraceCheckUtils]: 16: Hoare triple {5154#(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[] {5150#false} is VALID [2022-04-14 23:28:29,922 INFO L290 TraceCheckUtils]: 17: Hoare triple {5150#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[] {5150#false} is VALID [2022-04-14 23:28:29,923 INFO L290 TraceCheckUtils]: 18: Hoare triple {5150#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[] {5150#false} is VALID [2022-04-14 23:28:29,923 INFO L290 TraceCheckUtils]: 19: Hoare triple {5150#false} [147] L86-1-->mainErr0ASSERT_VIOLATIONERROR_FUNCTION: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {5150#false} is VALID [2022-04-14 23:28:29,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-14 23:28:29,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-14 23:28:29,923 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [345034906] [2022-04-14 23:28:29,923 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [345034906] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-14 23:28:29,923 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-14 23:28:29,923 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-04-14 23:28:29,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331554617] [2022-04-14 23:28:29,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-14 23:28:29,924 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 [2022-04-14 23:28:29,924 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-14 23:28:29,924 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) [2022-04-14 23:28:29,936 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 20 edges. 20 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-14 23:28:29,936 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-04-14 23:28:29,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-14 23:28:29,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-04-14 23:28:29,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-04-14 23:28:29,937 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) [2022-04-14 23:28:30,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-14 23:28:30,022 INFO L93 Difference]: Finished difference Result 267 states and 328 transitions. [2022-04-14 23:28:30,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-04-14 23:28:30,022 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 [2022-04-14 23:28:30,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-14 23:28:30,022 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) [2022-04-14 23:28:30,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 62 transitions. [2022-04-14 23:28:30,023 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) [2022-04-14 23:28:30,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 62 transitions. [2022-04-14 23:28:30,024 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 4 states and 62 transitions. [2022-04-14 23:28:30,081 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 62 edges. 62 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-14 23:28:30,085 INFO L225 Difference]: With dead ends: 267 [2022-04-14 23:28:30,085 INFO L226 Difference]: Without dead ends: 267 [2022-04-14 23:28:30,085 INFO L912 BasicCegarLoop]: 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 [2022-04-14 23:28:30,086 INFO L913 BasicCegarLoop]: 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 [2022-04-14 23:28:30,086 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [63 Valid, 54 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-14 23:28:30,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2022-04-14 23:28:30,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 265. [2022-04-14 23:28:30,091 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-14 23:28:30,091 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) [2022-04-14 23:28:30,092 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) [2022-04-14 23:28:30,092 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) [2022-04-14 23:28:30,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-14 23:28:30,097 INFO L93 Difference]: Finished difference Result 267 states and 328 transitions. [2022-04-14 23:28:30,097 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 328 transitions. [2022-04-14 23:28:30,097 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-14 23:28:30,098 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-14 23:28:30,098 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. [2022-04-14 23:28:30,098 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. [2022-04-14 23:28:30,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-14 23:28:30,103 INFO L93 Difference]: Finished difference Result 267 states and 328 transitions. [2022-04-14 23:28:30,103 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 328 transitions. [2022-04-14 23:28:30,104 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-14 23:28:30,104 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-14 23:28:30,104 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-14 23:28:30,104 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-14 23:28:30,105 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) [2022-04-14 23:28:30,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 327 transitions. [2022-04-14 23:28:30,109 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 327 transitions. Word has length 20 [2022-04-14 23:28:30,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-14 23:28:30,109 INFO L478 AbstractCegarLoop]: Abstraction has 265 states and 327 transitions. [2022-04-14 23:28:30,109 INFO L479 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) [2022-04-14 23:28:30,109 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 327 transitions. [2022-04-14 23:28:30,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-04-14 23:28:30,110 INFO L491 BasicCegarLoop]: Found error trace [2022-04-14 23:28:30,110 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-14 23:28:30,110 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-04-14 23:28:30,110 INFO L403 AbstractCegarLoop]: === Iteration 13 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-14 23:28:30,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-14 23:28:30,111 INFO L85 PathProgramCache]: Analyzing trace with hash 1809298035, now seen corresponding path program 1 times [2022-04-14 23:28:30,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-14 23:28:30,111 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871591735] [2022-04-14 23:28:30,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-14 23:28:30,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-14 23:28:30,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-14 23:28:30,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-14 23:28:30,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-14 23:28:30,140 INFO L290 TraceCheckUtils]: 0: Hoare triple {6233#(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] {6227#true} is VALID [2022-04-14 23:28:30,140 INFO L290 TraceCheckUtils]: 1: Hoare triple {6227#true} [123] ULTIMATE.initFINAL-->ULTIMATE.initEXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {6227#true} is VALID [2022-04-14 23:28:30,141 INFO L284 TraceCheckUtils]: 2: Hoare quadruple {6227#true} {6227#true} [163] ULTIMATE.initEXIT-->L-1: AOR: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] LVA: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {6227#true} is VALID [2022-04-14 23:28:30,141 INFO L272 TraceCheckUtils]: 0: Hoare triple {6227#true} [118] ULTIMATE.startENTRY-->ULTIMATE.initENTRY: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {6233#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} is VALID [2022-04-14 23:28:30,141 INFO L290 TraceCheckUtils]: 1: Hoare triple {6233#(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] {6227#true} is VALID [2022-04-14 23:28:30,141 INFO L290 TraceCheckUtils]: 2: Hoare triple {6227#true} [123] ULTIMATE.initFINAL-->ULTIMATE.initEXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {6227#true} is VALID [2022-04-14 23:28:30,142 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {6227#true} {6227#true} [163] ULTIMATE.initEXIT-->L-1: AOR: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] LVA: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {6227#true} is VALID [2022-04-14 23:28:30,142 INFO L272 TraceCheckUtils]: 4: Hoare triple {6227#true} [119] L-1-->mainENTRY: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {6227#true} is VALID [2022-04-14 23:28:30,142 INFO L290 TraceCheckUtils]: 5: Hoare triple {6227#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] {6227#true} is VALID [2022-04-14 23:28:30,142 INFO L290 TraceCheckUtils]: 6: Hoare triple {6227#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] {6227#true} is VALID [2022-04-14 23:28:30,142 INFO L290 TraceCheckUtils]: 7: Hoare triple {6227#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] {6227#true} is VALID [2022-04-14 23:28:30,142 INFO L290 TraceCheckUtils]: 8: Hoare triple {6227#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[] {6227#true} is VALID [2022-04-14 23:28:30,142 INFO L290 TraceCheckUtils]: 9: Hoare triple {6227#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[] {6227#true} is VALID [2022-04-14 23:28:30,143 INFO L290 TraceCheckUtils]: 10: Hoare triple {6227#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[] {6227#true} is VALID [2022-04-14 23:28:30,143 INFO L290 TraceCheckUtils]: 11: Hoare triple {6227#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[] {6227#true} is VALID [2022-04-14 23:28:30,147 INFO L290 TraceCheckUtils]: 12: Hoare triple {6227#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] {6232#(= main_~lk5~0 1)} is VALID [2022-04-14 23:28:30,148 INFO L290 TraceCheckUtils]: 13: Hoare triple {6232#(= 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[] {6232#(= main_~lk5~0 1)} is VALID [2022-04-14 23:28:30,148 INFO L290 TraceCheckUtils]: 14: Hoare triple {6232#(= 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[] {6232#(= main_~lk5~0 1)} is VALID [2022-04-14 23:28:30,148 INFO L290 TraceCheckUtils]: 15: Hoare triple {6232#(= 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[] {6232#(= main_~lk5~0 1)} is VALID [2022-04-14 23:28:30,149 INFO L290 TraceCheckUtils]: 16: Hoare triple {6232#(= 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[] {6232#(= main_~lk5~0 1)} is VALID [2022-04-14 23:28:30,149 INFO L290 TraceCheckUtils]: 17: Hoare triple {6232#(= 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[] {6232#(= main_~lk5~0 1)} is VALID [2022-04-14 23:28:30,149 INFO L290 TraceCheckUtils]: 18: Hoare triple {6232#(= 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[] {6228#false} is VALID [2022-04-14 23:28:30,150 INFO L290 TraceCheckUtils]: 19: Hoare triple {6228#false} [147] L86-1-->mainErr0ASSERT_VIOLATIONERROR_FUNCTION: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {6228#false} is VALID [2022-04-14 23:28:30,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-14 23:28:30,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-14 23:28:30,150 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1871591735] [2022-04-14 23:28:30,150 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1871591735] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-14 23:28:30,151 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-14 23:28:30,151 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-04-14 23:28:30,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95016005] [2022-04-14 23:28:30,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-14 23:28:30,151 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 [2022-04-14 23:28:30,151 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-14 23:28:30,151 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) [2022-04-14 23:28:30,164 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 20 edges. 20 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-14 23:28:30,164 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-04-14 23:28:30,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-14 23:28:30,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-04-14 23:28:30,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-04-14 23:28:30,165 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) [2022-04-14 23:28:30,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-14 23:28:30,249 INFO L93 Difference]: Finished difference Result 425 states and 503 transitions. [2022-04-14 23:28:30,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-04-14 23:28:30,249 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 [2022-04-14 23:28:30,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-14 23:28:30,250 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) [2022-04-14 23:28:30,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 53 transitions. [2022-04-14 23:28:30,250 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) [2022-04-14 23:28:30,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 53 transitions. [2022-04-14 23:28:30,251 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 4 states and 53 transitions. [2022-04-14 23:28:30,292 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 53 edges. 53 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-14 23:28:30,301 INFO L225 Difference]: With dead ends: 425 [2022-04-14 23:28:30,302 INFO L226 Difference]: Without dead ends: 425 [2022-04-14 23:28:30,302 INFO L912 BasicCegarLoop]: 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 [2022-04-14 23:28:30,303 INFO L913 BasicCegarLoop]: 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 [2022-04-14 23:28:30,304 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [54 Valid, 43 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-14 23:28:30,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 425 states. [2022-04-14 23:28:30,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 425 to 393. [2022-04-14 23:28:30,310 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-14 23:28:30,311 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) [2022-04-14 23:28:30,311 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) [2022-04-14 23:28:30,312 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) [2022-04-14 23:28:30,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-14 23:28:30,335 INFO L93 Difference]: Finished difference Result 425 states and 503 transitions. [2022-04-14 23:28:30,335 INFO L276 IsEmpty]: Start isEmpty. Operand 425 states and 503 transitions. [2022-04-14 23:28:30,335 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-14 23:28:30,335 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-14 23:28:30,336 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. [2022-04-14 23:28:30,337 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. [2022-04-14 23:28:30,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-14 23:28:30,347 INFO L93 Difference]: Finished difference Result 425 states and 503 transitions. [2022-04-14 23:28:30,347 INFO L276 IsEmpty]: Start isEmpty. Operand 425 states and 503 transitions. [2022-04-14 23:28:30,348 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-14 23:28:30,348 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-14 23:28:30,348 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-14 23:28:30,348 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-14 23:28:30,349 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) [2022-04-14 23:28:30,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 471 transitions. [2022-04-14 23:28:30,357 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 471 transitions. Word has length 20 [2022-04-14 23:28:30,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-14 23:28:30,358 INFO L478 AbstractCegarLoop]: Abstraction has 393 states and 471 transitions. [2022-04-14 23:28:30,358 INFO L479 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) [2022-04-14 23:28:30,358 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 471 transitions. [2022-04-14 23:28:30,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-04-14 23:28:30,361 INFO L491 BasicCegarLoop]: Found error trace [2022-04-14 23:28:30,361 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-14 23:28:30,361 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-04-14 23:28:30,361 INFO L403 AbstractCegarLoop]: === Iteration 14 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-14 23:28:30,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-14 23:28:30,361 INFO L85 PathProgramCache]: Analyzing trace with hash -742858926, now seen corresponding path program 1 times [2022-04-14 23:28:30,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-14 23:28:30,362 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346760033] [2022-04-14 23:28:30,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-14 23:28:30,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-14 23:28:30,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-14 23:28:30,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-14 23:28:30,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-14 23:28:30,412 INFO L290 TraceCheckUtils]: 0: Hoare triple {7913#(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] {7907#true} is VALID [2022-04-14 23:28:30,412 INFO L290 TraceCheckUtils]: 1: Hoare triple {7907#true} [123] ULTIMATE.initFINAL-->ULTIMATE.initEXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {7907#true} is VALID [2022-04-14 23:28:30,412 INFO L284 TraceCheckUtils]: 2: Hoare quadruple {7907#true} {7907#true} [163] ULTIMATE.initEXIT-->L-1: AOR: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] LVA: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {7907#true} is VALID [2022-04-14 23:28:30,413 INFO L272 TraceCheckUtils]: 0: Hoare triple {7907#true} [118] ULTIMATE.startENTRY-->ULTIMATE.initENTRY: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {7913#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} is VALID [2022-04-14 23:28:30,413 INFO L290 TraceCheckUtils]: 1: Hoare triple {7913#(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] {7907#true} is VALID [2022-04-14 23:28:30,413 INFO L290 TraceCheckUtils]: 2: Hoare triple {7907#true} [123] ULTIMATE.initFINAL-->ULTIMATE.initEXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {7907#true} is VALID [2022-04-14 23:28:30,413 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {7907#true} {7907#true} [163] ULTIMATE.initEXIT-->L-1: AOR: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] LVA: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {7907#true} is VALID [2022-04-14 23:28:30,413 INFO L272 TraceCheckUtils]: 4: Hoare triple {7907#true} [119] L-1-->mainENTRY: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {7907#true} is VALID [2022-04-14 23:28:30,413 INFO L290 TraceCheckUtils]: 5: Hoare triple {7907#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] {7907#true} is VALID [2022-04-14 23:28:30,413 INFO L290 TraceCheckUtils]: 6: Hoare triple {7907#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] {7907#true} is VALID [2022-04-14 23:28:30,414 INFO L290 TraceCheckUtils]: 7: Hoare triple {7907#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] {7907#true} is VALID [2022-04-14 23:28:30,414 INFO L290 TraceCheckUtils]: 8: Hoare triple {7907#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[] {7907#true} is VALID [2022-04-14 23:28:30,414 INFO L290 TraceCheckUtils]: 9: Hoare triple {7907#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[] {7907#true} is VALID [2022-04-14 23:28:30,414 INFO L290 TraceCheckUtils]: 10: Hoare triple {7907#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[] {7907#true} is VALID [2022-04-14 23:28:30,414 INFO L290 TraceCheckUtils]: 11: Hoare triple {7907#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[] {7907#true} is VALID [2022-04-14 23:28:30,414 INFO L290 TraceCheckUtils]: 12: Hoare triple {7907#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[] {7912#(= main_~p5~0 0)} is VALID [2022-04-14 23:28:30,415 INFO L290 TraceCheckUtils]: 13: Hoare triple {7912#(= 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[] {7912#(= main_~p5~0 0)} is VALID [2022-04-14 23:28:30,415 INFO L290 TraceCheckUtils]: 14: Hoare triple {7912#(= 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[] {7912#(= main_~p5~0 0)} is VALID [2022-04-14 23:28:30,415 INFO L290 TraceCheckUtils]: 15: Hoare triple {7912#(= 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[] {7912#(= main_~p5~0 0)} is VALID [2022-04-14 23:28:30,416 INFO L290 TraceCheckUtils]: 16: Hoare triple {7912#(= 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[] {7912#(= main_~p5~0 0)} is VALID [2022-04-14 23:28:30,416 INFO L290 TraceCheckUtils]: 17: Hoare triple {7912#(= 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[] {7908#false} is VALID [2022-04-14 23:28:30,416 INFO L290 TraceCheckUtils]: 18: Hoare triple {7908#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[] {7908#false} is VALID [2022-04-14 23:28:30,416 INFO L290 TraceCheckUtils]: 19: Hoare triple {7908#false} [147] L86-1-->mainErr0ASSERT_VIOLATIONERROR_FUNCTION: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {7908#false} is VALID [2022-04-14 23:28:30,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-14 23:28:30,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-14 23:28:30,418 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [346760033] [2022-04-14 23:28:30,418 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [346760033] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-14 23:28:30,418 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-14 23:28:30,418 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-04-14 23:28:30,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993914557] [2022-04-14 23:28:30,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-14 23:28:30,422 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 [2022-04-14 23:28:30,422 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-14 23:28:30,422 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) [2022-04-14 23:28:30,435 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 20 edges. 20 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-14 23:28:30,435 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-04-14 23:28:30,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-14 23:28:30,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-04-14 23:28:30,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-04-14 23:28:30,435 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) [2022-04-14 23:28:30,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-14 23:28:30,522 INFO L93 Difference]: Finished difference Result 487 states and 534 transitions. [2022-04-14 23:28:30,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-04-14 23:28:30,523 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 [2022-04-14 23:28:30,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-14 23:28:30,523 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) [2022-04-14 23:28:30,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 59 transitions. [2022-04-14 23:28:30,524 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) [2022-04-14 23:28:30,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 59 transitions. [2022-04-14 23:28:30,525 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 4 states and 59 transitions. [2022-04-14 23:28:30,569 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 59 edges. 59 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-14 23:28:30,569 INFO L225 Difference]: With dead ends: 487 [2022-04-14 23:28:30,569 INFO L226 Difference]: Without dead ends: 0 [2022-04-14 23:28:30,569 INFO L912 BasicCegarLoop]: 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 [2022-04-14 23:28:30,569 INFO L913 BasicCegarLoop]: 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 [2022-04-14 23:28:30,570 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [46 Valid, 62 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-14 23:28:30,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-04-14 23:28:30,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-04-14 23:28:30,570 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-14 23:28:30,570 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) [2022-04-14 23:28:30,571 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) [2022-04-14 23:28:30,571 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) [2022-04-14 23:28:30,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-14 23:28:30,571 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2022-04-14 23:28:30,571 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-04-14 23:28:30,571 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-14 23:28:30,571 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-14 23:28:30,571 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. [2022-04-14 23:28:30,571 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. [2022-04-14 23:28:30,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-14 23:28:30,571 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2022-04-14 23:28:30,572 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-04-14 23:28:30,572 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-14 23:28:30,572 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-14 23:28:30,572 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-14 23:28:30,572 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-14 23:28:30,572 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) [2022-04-14 23:28:30,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-04-14 23:28:30,572 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 20 [2022-04-14 23:28:30,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-14 23:28:30,572 INFO L478 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-04-14 23:28:30,572 INFO L479 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) [2022-04-14 23:28:30,573 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-04-14 23:28:30,573 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-14 23:28:30,575 INFO L788 garLoopResultBuilder]: Registering result SAFE for location mainErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-04-14 23:28:30,575 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-04-14 23:28:30,578 INFO L719 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-14 23:28:30,579 INFO L177 ceAbstractionStarter]: Computing trace abstraction results [2022-04-14 23:28:30,581 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.04 11:28:30 BasicIcfg [2022-04-14 23:28:30,581 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-04-14 23:28:30,582 INFO L158 Benchmark]: Toolchain (without parser) took 4594.74ms. Allocated memory was 192.9MB in the beginning and 256.9MB in the end (delta: 64.0MB). Free memory was 140.3MB in the beginning and 114.5MB in the end (delta: 25.8MB). Peak memory consumption was 90.5MB. Max. memory is 8.0GB. [2022-04-14 23:28:30,582 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 192.9MB. Free memory is still 157.3MB. There was no memory consumed. Max. memory is 8.0GB. [2022-04-14 23:28:30,582 INFO L158 Benchmark]: CACSL2BoogieTranslator took 194.53ms. Allocated memory is still 192.9MB. Free memory was 140.1MB in the beginning and 168.8MB in the end (delta: -28.7MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2022-04-14 23:28:30,582 INFO L158 Benchmark]: Boogie Preprocessor took 28.86ms. Allocated memory is still 192.9MB. Free memory was 168.8MB in the beginning and 167.1MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-04-14 23:28:30,583 INFO L158 Benchmark]: RCFGBuilder took 295.99ms. Allocated memory is still 192.9MB. Free memory was 167.0MB in the beginning and 155.3MB in the end (delta: 11.7MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2022-04-14 23:28:30,583 INFO L158 Benchmark]: IcfgTransformer took 30.99ms. Allocated memory is still 192.9MB. Free memory was 155.3MB in the beginning and 153.5MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-04-14 23:28:30,583 INFO L158 Benchmark]: TraceAbstraction took 4039.40ms. Allocated memory was 192.9MB in the beginning and 256.9MB in the end (delta: 64.0MB). Free memory was 153.0MB in the beginning and 114.5MB in the end (delta: 38.5MB). Peak memory consumption was 103.1MB. Max. memory is 8.0GB. [2022-04-14 23:28:30,584 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 0.10ms. Allocated memory is still 192.9MB. Free memory is still 157.3MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 194.53ms. Allocated memory is still 192.9MB. Free memory was 140.1MB in the beginning and 168.8MB in the end (delta: -28.7MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * Boogie Preprocessor took 28.86ms. Allocated memory is still 192.9MB. Free memory was 168.8MB in the beginning and 167.1MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 295.99ms. Allocated memory is still 192.9MB. Free memory was 167.0MB in the beginning and 155.3MB in the end (delta: 11.7MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * IcfgTransformer took 30.99ms. Allocated memory is still 192.9MB. Free memory was 155.3MB in the beginning and 153.5MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * TraceAbstraction took 4039.40ms. Allocated memory was 192.9MB in the beginning and 256.9MB in the end (delta: 64.0MB). Free memory was 153.0MB in the beginning and 114.5MB in the end (delta: 38.5MB). Peak memory consumption was 103.1MB. 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: 4.0s, OverallIterations: 14, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 2.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 910 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 910 mSDsluCounter, 768 SdHoareTripleChecker+Invalid, 0.4s 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, 0.2s 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: 0.3s AutomataMinimizationTime, 14 MinimizatonAttempts, 138 StatesRemovedByMinimization, 13 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s 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 RESULT: Ultimate proved your program to be correct! [2022-04-14 23:28:30,613 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...