/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/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf -i ../../../trunk/examples/svcomp/loop-acceleration/array_3-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-34549b5 [2022-04-08 03:46:59,743 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-04-08 03:46:59,744 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-04-08 03:46:59,776 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-04-08 03:46:59,784 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-04-08 03:46:59,785 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-04-08 03:46:59,785 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-04-08 03:46:59,786 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-04-08 03:46:59,787 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-04-08 03:46:59,788 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-04-08 03:46:59,789 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-04-08 03:46:59,790 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-04-08 03:46:59,791 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-04-08 03:46:59,794 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-04-08 03:46:59,795 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-04-08 03:46:59,796 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-04-08 03:46:59,796 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-04-08 03:46:59,798 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-04-08 03:46:59,806 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-04-08 03:46:59,806 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-04-08 03:46:59,808 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-04-08 03:46:59,809 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf [2022-04-08 03:46:59,818 INFO L113 SettingsManager]: Loading preferences was successful [2022-04-08 03:46:59,818 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-04-08 03:46:59,819 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-04-08 03:46:59,819 INFO L138 SettingsManager]: * sizeof long=4 [2022-04-08 03:46:59,819 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-04-08 03:46:59,819 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-04-08 03:46:59,820 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-04-08 03:46:59,820 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-04-08 03:46:59,820 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-04-08 03:46:59,820 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-04-08 03:46:59,820 INFO L138 SettingsManager]: * sizeof long double=12 [2022-04-08 03:46:59,820 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-04-08 03:46:59,820 INFO L138 SettingsManager]: * Use constant arrays=true [2022-04-08 03:46:59,820 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-04-08 03:46:59,820 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-04-08 03:46:59,820 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-04-08 03:46:59,820 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-04-08 03:46:59,820 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-04-08 03:46:59,821 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-08 03:46:59,821 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-04-08 03:46:59,821 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2022-04-08 03:46:59,821 INFO L138 SettingsManager]: * Trace refinement strategy=ACCELERATED_INTERPOLATION [2022-04-08 03:46:59,821 INFO L138 SettingsManager]: * Trace refinement strategy used in Accelerated Interpolation=CAMEL [2022-04-08 03:46:59,821 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-04-08 03:46:59,821 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=JORDAN [2022-04-08 03:46:59,821 INFO L138 SettingsManager]: * Use separate solver for trace checks=false 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-04-08 03:46:59,983 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-04-08 03:47:00,003 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-04-08 03:47:00,004 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-04-08 03:47:00,005 INFO L271 PluginConnector]: Initializing CDTParser... [2022-04-08 03:47:00,006 INFO L275 PluginConnector]: CDTParser initialized [2022-04-08 03:47:00,006 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-acceleration/array_3-1.i [2022-04-08 03:47:00,076 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ac23181e0/cb4cf9fc084945d294dfeb38a7e5ae45/FLAGaeabd70a5 [2022-04-08 03:47:00,410 INFO L306 CDTParser]: Found 1 translation units. [2022-04-08 03:47:00,411 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-acceleration/array_3-1.i [2022-04-08 03:47:00,418 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ac23181e0/cb4cf9fc084945d294dfeb38a7e5ae45/FLAGaeabd70a5 [2022-04-08 03:47:00,430 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ac23181e0/cb4cf9fc084945d294dfeb38a7e5ae45 [2022-04-08 03:47:00,432 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-04-08 03:47:00,434 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-04-08 03:47:00,435 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-04-08 03:47:00,435 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-04-08 03:47:00,437 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-04-08 03:47:00,438 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.04 03:47:00" (1/1) ... [2022-04-08 03:47:00,439 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@38d3b695 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.04 03:47:00, skipping insertion in model container [2022-04-08 03:47:00,439 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.04 03:47:00" (1/1) ... [2022-04-08 03:47:00,443 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-04-08 03:47:00,454 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-04-08 03:47:00,574 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-acceleration/array_3-1.i[849,862] [2022-04-08 03:47:00,586 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-08 03:47:00,593 INFO L203 MainTranslator]: Completed pre-run [2022-04-08 03:47:00,603 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-acceleration/array_3-1.i[849,862] [2022-04-08 03:47:00,608 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-08 03:47:00,618 INFO L208 MainTranslator]: Completed translation [2022-04-08 03:47:00,618 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.04 03:47:00 WrapperNode [2022-04-08 03:47:00,618 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-04-08 03:47:00,619 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-04-08 03:47:00,619 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-04-08 03:47:00,619 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-04-08 03:47:00,627 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.04 03:47:00" (1/1) ... [2022-04-08 03:47:00,627 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.04 03:47:00" (1/1) ... [2022-04-08 03:47:00,633 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.04 03:47:00" (1/1) ... [2022-04-08 03:47:00,633 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.04 03:47:00" (1/1) ... [2022-04-08 03:47:00,648 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.04 03:47:00" (1/1) ... [2022-04-08 03:47:00,651 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.04 03:47:00" (1/1) ... [2022-04-08 03:47:00,652 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.04 03:47:00" (1/1) ... [2022-04-08 03:47:00,653 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-04-08 03:47:00,654 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-04-08 03:47:00,654 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-04-08 03:47:00,654 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-04-08 03:47:00,656 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.04 03:47:00" (1/1) ... [2022-04-08 03:47:00,660 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-08 03:47:00,667 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-08 03:47:00,681 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) [2022-04-08 03:47:00,686 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 [2022-04-08 03:47:00,710 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-04-08 03:47:00,711 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-04-08 03:47:00,711 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-04-08 03:47:00,711 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-04-08 03:47:00,712 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-04-08 03:47:00,712 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-04-08 03:47:00,712 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-04-08 03:47:00,712 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2022-04-08 03:47:00,712 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2022-04-08 03:47:00,712 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-04-08 03:47:00,712 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-04-08 03:47:00,713 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-04-08 03:47:00,714 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-04-08 03:47:00,714 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-04-08 03:47:00,714 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-04-08 03:47:00,714 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-04-08 03:47:00,714 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-04-08 03:47:00,714 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-04-08 03:47:00,714 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-04-08 03:47:00,714 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-04-08 03:47:00,714 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-04-08 03:47:00,789 INFO L234 CfgBuilder]: Building ICFG [2022-04-08 03:47:00,790 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-04-08 03:47:00,890 INFO L275 CfgBuilder]: Performing block encoding [2022-04-08 03:47:00,894 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-04-08 03:47:00,895 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-04-08 03:47:00,896 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.04 03:47:00 BoogieIcfgContainer [2022-04-08 03:47:00,896 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-04-08 03:47:00,897 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-04-08 03:47:00,897 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-04-08 03:47:00,902 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-04-08 03:47:00,903 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.04 03:47:00" (1/3) ... [2022-04-08 03:47:00,903 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c9ea11c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.04 03:47:00, skipping insertion in model container [2022-04-08 03:47:00,903 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.04 03:47:00" (2/3) ... [2022-04-08 03:47:00,903 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c9ea11c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.04 03:47:00, skipping insertion in model container [2022-04-08 03:47:00,904 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.04 03:47:00" (3/3) ... [2022-04-08 03:47:00,904 INFO L111 eAbstractionObserver]: Analyzing ICFG array_3-1.i [2022-04-08 03:47:00,908 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-04-08 03:47:00,908 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-04-08 03:47:00,937 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-08 03:47:00,942 INFO L340 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=Craig_NestedInterpolation, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, 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 [2022-04-08 03:47:00,942 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-04-08 03:47:00,954 INFO L276 IsEmpty]: Start isEmpty. Operand has 25 states, 17 states have (on average 1.411764705882353) internal successors, (24), 18 states have internal predecessors, (24), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-04-08 03:47:00,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-04-08 03:47:00,958 INFO L491 BasicCegarLoop]: Found error trace [2022-04-08 03:47:00,959 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-08 03:47:00,959 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-08 03:47:00,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-08 03:47:00,963 INFO L85 PathProgramCache]: Analyzing trace with hash 1037683284, now seen corresponding path program 1 times [2022-04-08 03:47:00,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-08 03:47:00,968 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [43686319] [2022-04-08 03:47:00,975 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-08 03:47:00,975 INFO L85 PathProgramCache]: Analyzing trace with hash 1037683284, now seen corresponding path program 2 times [2022-04-08 03:47:00,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-08 03:47:00,978 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102166905] [2022-04-08 03:47:00,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-08 03:47:00,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-08 03:47:01,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-08 03:47:01,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-08 03:47:01,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-08 03:47:01,166 INFO L290 TraceCheckUtils]: 0: Hoare triple {33#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(12, 2); {28#true} is VALID [2022-04-08 03:47:01,167 INFO L290 TraceCheckUtils]: 1: Hoare triple {28#true} assume true; {28#true} is VALID [2022-04-08 03:47:01,167 INFO L284 TraceCheckUtils]: 2: Hoare quadruple {28#true} {28#true} #63#return; {28#true} is VALID [2022-04-08 03:47:01,173 INFO L272 TraceCheckUtils]: 0: Hoare triple {28#true} call ULTIMATE.init(); {33#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} is VALID [2022-04-08 03:47:01,173 INFO L290 TraceCheckUtils]: 1: Hoare triple {33#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(12, 2); {28#true} is VALID [2022-04-08 03:47:01,173 INFO L290 TraceCheckUtils]: 2: Hoare triple {28#true} assume true; {28#true} is VALID [2022-04-08 03:47:01,173 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {28#true} {28#true} #63#return; {28#true} is VALID [2022-04-08 03:47:01,173 INFO L272 TraceCheckUtils]: 4: Hoare triple {28#true} call #t~ret5 := main(); {28#true} is VALID [2022-04-08 03:47:01,174 INFO L290 TraceCheckUtils]: 5: Hoare triple {28#true} call ~#A~0.base, ~#A~0.offset := #Ultimate.allocOnStack(4096);havoc ~i~0;~i~0 := 0; {28#true} is VALID [2022-04-08 03:47:01,174 INFO L290 TraceCheckUtils]: 6: Hoare triple {28#true} assume !true; {29#false} is VALID [2022-04-08 03:47:01,174 INFO L290 TraceCheckUtils]: 7: Hoare triple {29#false} ~i~0 := 0; {29#false} is VALID [2022-04-08 03:47:01,175 INFO L290 TraceCheckUtils]: 8: Hoare triple {29#false} assume !true; {29#false} is VALID [2022-04-08 03:47:01,175 INFO L272 TraceCheckUtils]: 9: Hoare triple {29#false} call __VERIFIER_assert((if ~i~0 <= 1024 then 1 else 0)); {29#false} is VALID [2022-04-08 03:47:01,175 INFO L290 TraceCheckUtils]: 10: Hoare triple {29#false} ~cond := #in~cond; {29#false} is VALID [2022-04-08 03:47:01,175 INFO L290 TraceCheckUtils]: 11: Hoare triple {29#false} assume 0 == ~cond; {29#false} is VALID [2022-04-08 03:47:01,175 INFO L290 TraceCheckUtils]: 12: Hoare triple {29#false} assume !false; {29#false} is VALID [2022-04-08 03:47:01,176 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-08 03:47:01,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-08 03:47:01,176 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102166905] [2022-04-08 03:47:01,177 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1102166905] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-08 03:47:01,177 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-08 03:47:01,177 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-04-08 03:47:01,179 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-08 03:47:01,179 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [43686319] [2022-04-08 03:47:01,179 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [43686319] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-08 03:47:01,179 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-08 03:47:01,179 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-04-08 03:47:01,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463897387] [2022-04-08 03:47:01,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-08 03:47:01,184 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 states have internal predecessors, (9), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2022-04-08 03:47:01,185 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-08 03:47:01,187 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 states have internal predecessors, (9), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 03:47:01,211 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 13 edges. 13 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-08 03:47:01,211 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-08 03:47:01,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-08 03:47:01,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-08 03:47:01,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-08 03:47:01,238 INFO L87 Difference]: Start difference. First operand has 25 states, 17 states have (on average 1.411764705882353) internal successors, (24), 18 states have internal predecessors, (24), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 states have internal predecessors, (9), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 03:47:01,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 03:47:01,332 INFO L93 Difference]: Finished difference Result 42 states and 51 transitions. [2022-04-08 03:47:01,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-08 03:47:01,333 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 states have internal predecessors, (9), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2022-04-08 03:47:01,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-08 03:47:01,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 states have internal predecessors, (9), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 03:47:01,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 51 transitions. [2022-04-08 03:47:01,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 states have internal predecessors, (9), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 03:47:01,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 51 transitions. [2022-04-08 03:47:01,345 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 3 states and 51 transitions. [2022-04-08 03:47:01,403 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 51 edges. 51 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-08 03:47:01,419 INFO L225 Difference]: With dead ends: 42 [2022-04-08 03:47:01,419 INFO L226 Difference]: Without dead ends: 18 [2022-04-08 03:47:01,421 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-08 03:47:01,425 INFO L913 BasicCegarLoop]: 26 mSDtfsCounter, 18 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-08 03:47:01,426 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [19 Valid, 29 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-08 03:47:01,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2022-04-08 03:47:01,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2022-04-08 03:47:01,460 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-08 03:47:01,461 INFO L82 GeneralOperation]: Start isEquivalent. First operand 18 states. Second operand has 18 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 13 states have internal predecessors, (16), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 03:47:01,461 INFO L74 IsIncluded]: Start isIncluded. First operand 18 states. Second operand has 18 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 13 states have internal predecessors, (16), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 03:47:01,461 INFO L87 Difference]: Start difference. First operand 18 states. Second operand has 18 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 13 states have internal predecessors, (16), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 03:47:01,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 03:47:01,463 INFO L93 Difference]: Finished difference Result 18 states and 20 transitions. [2022-04-08 03:47:01,463 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions. [2022-04-08 03:47:01,464 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-08 03:47:01,464 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-08 03:47:01,464 INFO L74 IsIncluded]: Start isIncluded. First operand has 18 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 13 states have internal predecessors, (16), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Second operand 18 states. [2022-04-08 03:47:01,464 INFO L87 Difference]: Start difference. First operand has 18 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 13 states have internal predecessors, (16), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Second operand 18 states. [2022-04-08 03:47:01,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 03:47:01,466 INFO L93 Difference]: Finished difference Result 18 states and 20 transitions. [2022-04-08 03:47:01,466 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions. [2022-04-08 03:47:01,466 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-08 03:47:01,466 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-08 03:47:01,466 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-08 03:47:01,466 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-08 03:47:01,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 13 states have internal predecessors, (16), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 03:47:01,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 20 transitions. [2022-04-08 03:47:01,468 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 20 transitions. Word has length 13 [2022-04-08 03:47:01,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-08 03:47:01,469 INFO L478 AbstractCegarLoop]: Abstraction has 18 states and 20 transitions. [2022-04-08 03:47:01,469 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 states have internal predecessors, (9), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 03:47:01,469 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 18 states and 20 transitions. [2022-04-08 03:47:01,492 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 20 edges. 20 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-08 03:47:01,492 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions. [2022-04-08 03:47:01,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-04-08 03:47:01,493 INFO L491 BasicCegarLoop]: Found error trace [2022-04-08 03:47:01,493 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-08 03:47:01,494 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-04-08 03:47:01,494 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-08 03:47:01,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-08 03:47:01,499 INFO L85 PathProgramCache]: Analyzing trace with hash -193552662, now seen corresponding path program 1 times [2022-04-08 03:47:01,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-08 03:47:01,499 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1908855552] [2022-04-08 03:47:01,502 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-08 03:47:01,502 INFO L85 PathProgramCache]: Analyzing trace with hash -193552662, now seen corresponding path program 2 times [2022-04-08 03:47:01,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-08 03:47:01,502 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2020361017] [2022-04-08 03:47:01,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-08 03:47:01,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-08 03:47:01,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-08 03:47:01,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-08 03:47:01,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-08 03:47:01,577 INFO L290 TraceCheckUtils]: 0: Hoare triple {198#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(12, 2); {192#true} is VALID [2022-04-08 03:47:01,577 INFO L290 TraceCheckUtils]: 1: Hoare triple {192#true} assume true; {192#true} is VALID [2022-04-08 03:47:01,577 INFO L284 TraceCheckUtils]: 2: Hoare quadruple {192#true} {192#true} #63#return; {192#true} is VALID [2022-04-08 03:47:01,578 INFO L272 TraceCheckUtils]: 0: Hoare triple {192#true} call ULTIMATE.init(); {198#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} is VALID [2022-04-08 03:47:01,578 INFO L290 TraceCheckUtils]: 1: Hoare triple {198#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(12, 2); {192#true} is VALID [2022-04-08 03:47:01,578 INFO L290 TraceCheckUtils]: 2: Hoare triple {192#true} assume true; {192#true} is VALID [2022-04-08 03:47:01,579 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {192#true} {192#true} #63#return; {192#true} is VALID [2022-04-08 03:47:01,579 INFO L272 TraceCheckUtils]: 4: Hoare triple {192#true} call #t~ret5 := main(); {192#true} is VALID [2022-04-08 03:47:01,580 INFO L290 TraceCheckUtils]: 5: Hoare triple {192#true} call ~#A~0.base, ~#A~0.offset := #Ultimate.allocOnStack(4096);havoc ~i~0;~i~0 := 0; {197#(= main_~i~0 0)} is VALID [2022-04-08 03:47:01,580 INFO L290 TraceCheckUtils]: 6: Hoare triple {197#(= main_~i~0 0)} assume !(~i~0 < 1024); {193#false} is VALID [2022-04-08 03:47:01,580 INFO L290 TraceCheckUtils]: 7: Hoare triple {193#false} ~i~0 := 0; {193#false} is VALID [2022-04-08 03:47:01,581 INFO L290 TraceCheckUtils]: 8: Hoare triple {193#false} call #t~mem4 := read~int(~#A~0.base, ~#A~0.offset + 4 * ~i~0, 4); {193#false} is VALID [2022-04-08 03:47:01,581 INFO L290 TraceCheckUtils]: 9: Hoare triple {193#false} assume !(0 != #t~mem4);havoc #t~mem4; {193#false} is VALID [2022-04-08 03:47:01,581 INFO L272 TraceCheckUtils]: 10: Hoare triple {193#false} call __VERIFIER_assert((if ~i~0 <= 1024 then 1 else 0)); {193#false} is VALID [2022-04-08 03:47:01,581 INFO L290 TraceCheckUtils]: 11: Hoare triple {193#false} ~cond := #in~cond; {193#false} is VALID [2022-04-08 03:47:01,581 INFO L290 TraceCheckUtils]: 12: Hoare triple {193#false} assume 0 == ~cond; {193#false} is VALID [2022-04-08 03:47:01,581 INFO L290 TraceCheckUtils]: 13: Hoare triple {193#false} assume !false; {193#false} is VALID [2022-04-08 03:47:01,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-08 03:47:01,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-08 03:47:01,582 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2020361017] [2022-04-08 03:47:01,582 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2020361017] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-08 03:47:01,582 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-08 03:47:01,582 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-04-08 03:47:01,583 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-08 03:47:01,583 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1908855552] [2022-04-08 03:47:01,583 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1908855552] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-08 03:47:01,583 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-08 03:47:01,583 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-04-08 03:47:01,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116953679] [2022-04-08 03:47:01,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-08 03:47:01,584 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2022-04-08 03:47:01,584 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-08 03:47:01,584 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 03:47:01,595 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 14 edges. 14 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-08 03:47:01,595 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-04-08 03:47:01,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-08 03:47:01,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-04-08 03:47:01,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-04-08 03:47:01,597 INFO L87 Difference]: Start difference. First operand 18 states and 20 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 03:47:01,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 03:47:01,690 INFO L93 Difference]: Finished difference Result 35 states and 41 transitions. [2022-04-08 03:47:01,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-04-08 03:47:01,690 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2022-04-08 03:47:01,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-08 03:47:01,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 03:47:01,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 41 transitions. [2022-04-08 03:47:01,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 03:47:01,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 41 transitions. [2022-04-08 03:47:01,699 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 4 states and 41 transitions. [2022-04-08 03:47:01,733 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 41 edges. 41 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-08 03:47:01,737 INFO L225 Difference]: With dead ends: 35 [2022-04-08 03:47:01,737 INFO L226 Difference]: Without dead ends: 25 [2022-04-08 03:47:01,737 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-04-08 03:47:01,740 INFO L913 BasicCegarLoop]: 15 mSDtfsCounter, 24 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-08 03:47:01,741 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [24 Valid, 22 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-08 03:47:01,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2022-04-08 03:47:01,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 22. [2022-04-08 03:47:01,751 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-08 03:47:01,751 INFO L82 GeneralOperation]: Start isEquivalent. First operand 25 states. Second operand has 22 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 17 states have internal predecessors, (21), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 03:47:01,752 INFO L74 IsIncluded]: Start isIncluded. First operand 25 states. Second operand has 22 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 17 states have internal predecessors, (21), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 03:47:01,753 INFO L87 Difference]: Start difference. First operand 25 states. Second operand has 22 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 17 states have internal predecessors, (21), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 03:47:01,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 03:47:01,754 INFO L93 Difference]: Finished difference Result 25 states and 28 transitions. [2022-04-08 03:47:01,754 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 28 transitions. [2022-04-08 03:47:01,754 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-08 03:47:01,754 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-08 03:47:01,755 INFO L74 IsIncluded]: Start isIncluded. First operand has 22 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 17 states have internal predecessors, (21), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Second operand 25 states. [2022-04-08 03:47:01,755 INFO L87 Difference]: Start difference. First operand has 22 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 17 states have internal predecessors, (21), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Second operand 25 states. [2022-04-08 03:47:01,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 03:47:01,757 INFO L93 Difference]: Finished difference Result 25 states and 28 transitions. [2022-04-08 03:47:01,757 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 28 transitions. [2022-04-08 03:47:01,757 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-08 03:47:01,757 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-08 03:47:01,757 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-08 03:47:01,757 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-08 03:47:01,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 17 states have internal predecessors, (21), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 03:47:01,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 25 transitions. [2022-04-08 03:47:01,761 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 25 transitions. Word has length 14 [2022-04-08 03:47:01,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-08 03:47:01,761 INFO L478 AbstractCegarLoop]: Abstraction has 22 states and 25 transitions. [2022-04-08 03:47:01,762 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 03:47:01,762 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 22 states and 25 transitions. [2022-04-08 03:47:01,780 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 25 edges. 25 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-08 03:47:01,780 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 25 transitions. [2022-04-08 03:47:01,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-04-08 03:47:01,781 INFO L491 BasicCegarLoop]: Found error trace [2022-04-08 03:47:01,781 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-08 03:47:01,781 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-04-08 03:47:01,782 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-08 03:47:01,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-08 03:47:01,782 INFO L85 PathProgramCache]: Analyzing trace with hash -1156315956, now seen corresponding path program 1 times [2022-04-08 03:47:01,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-08 03:47:01,785 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1026741352] [2022-04-08 03:47:01,806 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-04-08 03:47:01,806 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-04-08 03:47:01,807 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-08 03:47:01,807 INFO L85 PathProgramCache]: Analyzing trace with hash -1156315956, now seen corresponding path program 2 times [2022-04-08 03:47:01,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-08 03:47:01,807 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1876878853] [2022-04-08 03:47:01,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-08 03:47:01,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-08 03:47:01,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-08 03:47:01,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-08 03:47:01,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-08 03:47:01,878 INFO L290 TraceCheckUtils]: 0: Hoare triple {374#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(12, 2); {367#true} is VALID [2022-04-08 03:47:01,879 INFO L290 TraceCheckUtils]: 1: Hoare triple {367#true} assume true; {367#true} is VALID [2022-04-08 03:47:01,879 INFO L284 TraceCheckUtils]: 2: Hoare quadruple {367#true} {367#true} #63#return; {367#true} is VALID [2022-04-08 03:47:01,883 INFO L272 TraceCheckUtils]: 0: Hoare triple {367#true} call ULTIMATE.init(); {374#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} is VALID [2022-04-08 03:47:01,883 INFO L290 TraceCheckUtils]: 1: Hoare triple {374#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(12, 2); {367#true} is VALID [2022-04-08 03:47:01,883 INFO L290 TraceCheckUtils]: 2: Hoare triple {367#true} assume true; {367#true} is VALID [2022-04-08 03:47:01,883 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {367#true} {367#true} #63#return; {367#true} is VALID [2022-04-08 03:47:01,883 INFO L272 TraceCheckUtils]: 4: Hoare triple {367#true} call #t~ret5 := main(); {367#true} is VALID [2022-04-08 03:47:01,884 INFO L290 TraceCheckUtils]: 5: Hoare triple {367#true} call ~#A~0.base, ~#A~0.offset := #Ultimate.allocOnStack(4096);havoc ~i~0;~i~0 := 0; {372#(= main_~i~0 0)} is VALID [2022-04-08 03:47:01,885 INFO L290 TraceCheckUtils]: 6: Hoare triple {372#(= main_~i~0 0)} assume !!(~i~0 < 1024);assume -2147483648 <= #t~nondet2 && #t~nondet2 <= 2147483647;call write~int(#t~nondet2, ~#A~0.base, ~#A~0.offset + 4 * ~i~0, 4);havoc #t~nondet2; {372#(= main_~i~0 0)} is VALID [2022-04-08 03:47:01,885 INFO L290 TraceCheckUtils]: 7: Hoare triple {372#(= main_~i~0 0)} #t~post1 := ~i~0;~i~0 := 1 + #t~post1;havoc #t~post1; {373#(<= main_~i~0 1)} is VALID [2022-04-08 03:47:01,886 INFO L290 TraceCheckUtils]: 8: Hoare triple {373#(<= main_~i~0 1)} assume !(~i~0 < 1024); {368#false} is VALID [2022-04-08 03:47:01,886 INFO L290 TraceCheckUtils]: 9: Hoare triple {368#false} ~i~0 := 0; {368#false} is VALID [2022-04-08 03:47:01,886 INFO L290 TraceCheckUtils]: 10: Hoare triple {368#false} call #t~mem4 := read~int(~#A~0.base, ~#A~0.offset + 4 * ~i~0, 4); {368#false} is VALID [2022-04-08 03:47:01,887 INFO L290 TraceCheckUtils]: 11: Hoare triple {368#false} assume !(0 != #t~mem4);havoc #t~mem4; {368#false} is VALID [2022-04-08 03:47:01,887 INFO L272 TraceCheckUtils]: 12: Hoare triple {368#false} call __VERIFIER_assert((if ~i~0 <= 1024 then 1 else 0)); {368#false} is VALID [2022-04-08 03:47:01,887 INFO L290 TraceCheckUtils]: 13: Hoare triple {368#false} ~cond := #in~cond; {368#false} is VALID [2022-04-08 03:47:01,888 INFO L290 TraceCheckUtils]: 14: Hoare triple {368#false} assume 0 == ~cond; {368#false} is VALID [2022-04-08 03:47:01,888 INFO L290 TraceCheckUtils]: 15: Hoare triple {368#false} assume !false; {368#false} is VALID [2022-04-08 03:47:01,888 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-08 03:47:01,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-08 03:47:01,888 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1876878853] [2022-04-08 03:47:01,888 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1876878853] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-08 03:47:01,889 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1567369348] [2022-04-08 03:47:01,889 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-08 03:47:01,889 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-08 03:47:01,889 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-08 03:47:01,892 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-08 03:47:01,893 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-04-08 03:47:01,931 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-04-08 03:47:01,931 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-08 03:47:01,933 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 4 conjunts are in the unsatisfiable core [2022-04-08 03:47:01,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-08 03:47:01,943 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-08 03:47:02,071 INFO L272 TraceCheckUtils]: 0: Hoare triple {367#true} call ULTIMATE.init(); {367#true} is VALID [2022-04-08 03:47:02,071 INFO L290 TraceCheckUtils]: 1: Hoare triple {367#true} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(12, 2); {367#true} is VALID [2022-04-08 03:47:02,072 INFO L290 TraceCheckUtils]: 2: Hoare triple {367#true} assume true; {367#true} is VALID [2022-04-08 03:47:02,072 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {367#true} {367#true} #63#return; {367#true} is VALID [2022-04-08 03:47:02,072 INFO L272 TraceCheckUtils]: 4: Hoare triple {367#true} call #t~ret5 := main(); {367#true} is VALID [2022-04-08 03:47:02,072 INFO L290 TraceCheckUtils]: 5: Hoare triple {367#true} call ~#A~0.base, ~#A~0.offset := #Ultimate.allocOnStack(4096);havoc ~i~0;~i~0 := 0; {367#true} is VALID [2022-04-08 03:47:02,072 INFO L290 TraceCheckUtils]: 6: Hoare triple {367#true} assume !!(~i~0 < 1024);assume -2147483648 <= #t~nondet2 && #t~nondet2 <= 2147483647;call write~int(#t~nondet2, ~#A~0.base, ~#A~0.offset + 4 * ~i~0, 4);havoc #t~nondet2; {367#true} is VALID [2022-04-08 03:47:02,072 INFO L290 TraceCheckUtils]: 7: Hoare triple {367#true} #t~post1 := ~i~0;~i~0 := 1 + #t~post1;havoc #t~post1; {367#true} is VALID [2022-04-08 03:47:02,073 INFO L290 TraceCheckUtils]: 8: Hoare triple {367#true} assume !(~i~0 < 1024); {367#true} is VALID [2022-04-08 03:47:02,073 INFO L290 TraceCheckUtils]: 9: Hoare triple {367#true} ~i~0 := 0; {405#(<= main_~i~0 0)} is VALID [2022-04-08 03:47:02,074 INFO L290 TraceCheckUtils]: 10: Hoare triple {405#(<= main_~i~0 0)} call #t~mem4 := read~int(~#A~0.base, ~#A~0.offset + 4 * ~i~0, 4); {405#(<= main_~i~0 0)} is VALID [2022-04-08 03:47:02,074 INFO L290 TraceCheckUtils]: 11: Hoare triple {405#(<= main_~i~0 0)} assume !(0 != #t~mem4);havoc #t~mem4; {405#(<= main_~i~0 0)} is VALID [2022-04-08 03:47:02,075 INFO L272 TraceCheckUtils]: 12: Hoare triple {405#(<= main_~i~0 0)} call __VERIFIER_assert((if ~i~0 <= 1024 then 1 else 0)); {415#(<= 1 |__VERIFIER_assert_#in~cond|)} is VALID [2022-04-08 03:47:02,075 INFO L290 TraceCheckUtils]: 13: Hoare triple {415#(<= 1 |__VERIFIER_assert_#in~cond|)} ~cond := #in~cond; {419#(<= 1 __VERIFIER_assert_~cond)} is VALID [2022-04-08 03:47:02,075 INFO L290 TraceCheckUtils]: 14: Hoare triple {419#(<= 1 __VERIFIER_assert_~cond)} assume 0 == ~cond; {368#false} is VALID [2022-04-08 03:47:02,076 INFO L290 TraceCheckUtils]: 15: Hoare triple {368#false} assume !false; {368#false} is VALID [2022-04-08 03:47:02,076 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-04-08 03:47:02,076 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-08 03:47:02,076 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1567369348] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-08 03:47:02,076 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-08 03:47:02,077 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2022-04-08 03:47:02,077 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-08 03:47:02,077 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1026741352] [2022-04-08 03:47:02,077 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1026741352] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-08 03:47:02,077 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-08 03:47:02,077 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-08 03:47:02,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828583639] [2022-04-08 03:47:02,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-08 03:47:02,078 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2022-04-08 03:47:02,078 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-08 03:47:02,078 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 03:47:02,089 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 16 edges. 16 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-08 03:47:02,089 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-04-08 03:47:02,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-08 03:47:02,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-04-08 03:47:02,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-04-08 03:47:02,090 INFO L87 Difference]: Start difference. First operand 22 states and 25 transitions. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 03:47:02,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 03:47:02,182 INFO L93 Difference]: Finished difference Result 29 states and 31 transitions. [2022-04-08 03:47:02,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-04-08 03:47:02,182 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2022-04-08 03:47:02,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-08 03:47:02,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 03:47:02,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 31 transitions. [2022-04-08 03:47:02,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 03:47:02,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 31 transitions. [2022-04-08 03:47:02,187 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 5 states and 31 transitions. [2022-04-08 03:47:02,210 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 31 edges. 31 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-08 03:47:02,212 INFO L225 Difference]: With dead ends: 29 [2022-04-08 03:47:02,212 INFO L226 Difference]: Without dead ends: 24 [2022-04-08 03:47:02,212 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-04-08 03:47:02,219 INFO L913 BasicCegarLoop]: 14 mSDtfsCounter, 4 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-08 03:47:02,219 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 48 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-08 03:47:02,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2022-04-08 03:47:02,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 22. [2022-04-08 03:47:02,226 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-08 03:47:02,226 INFO L82 GeneralOperation]: Start isEquivalent. First operand 24 states. Second operand has 22 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 17 states have internal predecessors, (20), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 03:47:02,227 INFO L74 IsIncluded]: Start isIncluded. First operand 24 states. Second operand has 22 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 17 states have internal predecessors, (20), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 03:47:02,227 INFO L87 Difference]: Start difference. First operand 24 states. Second operand has 22 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 17 states have internal predecessors, (20), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 03:47:02,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 03:47:02,228 INFO L93 Difference]: Finished difference Result 24 states and 26 transitions. [2022-04-08 03:47:02,228 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 26 transitions. [2022-04-08 03:47:02,228 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-08 03:47:02,228 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-08 03:47:02,229 INFO L74 IsIncluded]: Start isIncluded. First operand has 22 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 17 states have internal predecessors, (20), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Second operand 24 states. [2022-04-08 03:47:02,229 INFO L87 Difference]: Start difference. First operand has 22 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 17 states have internal predecessors, (20), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Second operand 24 states. [2022-04-08 03:47:02,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 03:47:02,230 INFO L93 Difference]: Finished difference Result 24 states and 26 transitions. [2022-04-08 03:47:02,230 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 26 transitions. [2022-04-08 03:47:02,230 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-08 03:47:02,230 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-08 03:47:02,230 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-08 03:47:02,230 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-08 03:47:02,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 17 states have internal predecessors, (20), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 03:47:02,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 24 transitions. [2022-04-08 03:47:02,231 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 24 transitions. Word has length 16 [2022-04-08 03:47:02,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-08 03:47:02,231 INFO L478 AbstractCegarLoop]: Abstraction has 22 states and 24 transitions. [2022-04-08 03:47:02,232 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 03:47:02,232 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 22 states and 24 transitions. [2022-04-08 03:47:02,258 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 24 edges. 24 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-08 03:47:02,258 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 24 transitions. [2022-04-08 03:47:02,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-04-08 03:47:02,260 INFO L491 BasicCegarLoop]: Found error trace [2022-04-08 03:47:02,260 INFO L499 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-08 03:47:02,279 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-04-08 03:47:02,467 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-08 03:47:02,468 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-08 03:47:02,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-08 03:47:02,468 INFO L85 PathProgramCache]: Analyzing trace with hash -1375191853, now seen corresponding path program 1 times [2022-04-08 03:47:02,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-08 03:47:02,468 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1651552076] [2022-04-08 03:47:02,475 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-04-08 03:47:02,475 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-04-08 03:47:02,475 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-08 03:47:02,475 INFO L85 PathProgramCache]: Analyzing trace with hash -1375191853, now seen corresponding path program 2 times [2022-04-08 03:47:02,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-08 03:47:02,476 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [633516908] [2022-04-08 03:47:02,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-08 03:47:02,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-08 03:47:02,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-08 03:47:02,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-08 03:47:02,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-08 03:47:02,528 INFO L290 TraceCheckUtils]: 0: Hoare triple {584#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(12, 2); {577#true} is VALID [2022-04-08 03:47:02,528 INFO L290 TraceCheckUtils]: 1: Hoare triple {577#true} assume true; {577#true} is VALID [2022-04-08 03:47:02,528 INFO L284 TraceCheckUtils]: 2: Hoare quadruple {577#true} {577#true} #63#return; {577#true} is VALID [2022-04-08 03:47:02,529 INFO L272 TraceCheckUtils]: 0: Hoare triple {577#true} call ULTIMATE.init(); {584#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} is VALID [2022-04-08 03:47:02,529 INFO L290 TraceCheckUtils]: 1: Hoare triple {584#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(12, 2); {577#true} is VALID [2022-04-08 03:47:02,529 INFO L290 TraceCheckUtils]: 2: Hoare triple {577#true} assume true; {577#true} is VALID [2022-04-08 03:47:02,529 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {577#true} {577#true} #63#return; {577#true} is VALID [2022-04-08 03:47:02,530 INFO L272 TraceCheckUtils]: 4: Hoare triple {577#true} call #t~ret5 := main(); {577#true} is VALID [2022-04-08 03:47:02,532 INFO L290 TraceCheckUtils]: 5: Hoare triple {577#true} call ~#A~0.base, ~#A~0.offset := #Ultimate.allocOnStack(4096);havoc ~i~0;~i~0 := 0; {582#(= main_~i~0 0)} is VALID [2022-04-08 03:47:02,532 INFO L290 TraceCheckUtils]: 6: Hoare triple {582#(= main_~i~0 0)} assume !!(~i~0 < 1024);assume -2147483648 <= #t~nondet2 && #t~nondet2 <= 2147483647;call write~int(#t~nondet2, ~#A~0.base, ~#A~0.offset + 4 * ~i~0, 4);havoc #t~nondet2; {582#(= main_~i~0 0)} is VALID [2022-04-08 03:47:02,532 INFO L290 TraceCheckUtils]: 7: Hoare triple {582#(= main_~i~0 0)} #t~post1 := ~i~0;~i~0 := 1 + #t~post1;havoc #t~post1; {583#(<= main_~i~0 1)} is VALID [2022-04-08 03:47:02,533 INFO L290 TraceCheckUtils]: 8: Hoare triple {583#(<= main_~i~0 1)} assume !(~i~0 < 1024); {578#false} is VALID [2022-04-08 03:47:02,533 INFO L290 TraceCheckUtils]: 9: Hoare triple {578#false} ~i~0 := 0; {578#false} is VALID [2022-04-08 03:47:02,533 INFO L290 TraceCheckUtils]: 10: Hoare triple {578#false} call #t~mem4 := read~int(~#A~0.base, ~#A~0.offset + 4 * ~i~0, 4); {578#false} is VALID [2022-04-08 03:47:02,533 INFO L290 TraceCheckUtils]: 11: Hoare triple {578#false} assume !!(0 != #t~mem4);havoc #t~mem4; {578#false} is VALID [2022-04-08 03:47:02,533 INFO L290 TraceCheckUtils]: 12: Hoare triple {578#false} assume !(~i~0 >= 1023); {578#false} is VALID [2022-04-08 03:47:02,533 INFO L290 TraceCheckUtils]: 13: Hoare triple {578#false} #t~post3 := ~i~0;~i~0 := 1 + #t~post3;havoc #t~post3; {578#false} is VALID [2022-04-08 03:47:02,534 INFO L290 TraceCheckUtils]: 14: Hoare triple {578#false} call #t~mem4 := read~int(~#A~0.base, ~#A~0.offset + 4 * ~i~0, 4); {578#false} is VALID [2022-04-08 03:47:02,534 INFO L290 TraceCheckUtils]: 15: Hoare triple {578#false} assume !(0 != #t~mem4);havoc #t~mem4; {578#false} is VALID [2022-04-08 03:47:02,534 INFO L272 TraceCheckUtils]: 16: Hoare triple {578#false} call __VERIFIER_assert((if ~i~0 <= 1024 then 1 else 0)); {578#false} is VALID [2022-04-08 03:47:02,534 INFO L290 TraceCheckUtils]: 17: Hoare triple {578#false} ~cond := #in~cond; {578#false} is VALID [2022-04-08 03:47:02,534 INFO L290 TraceCheckUtils]: 18: Hoare triple {578#false} assume 0 == ~cond; {578#false} is VALID [2022-04-08 03:47:02,534 INFO L290 TraceCheckUtils]: 19: Hoare triple {578#false} assume !false; {578#false} is VALID [2022-04-08 03:47:02,534 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-04-08 03:47:02,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-08 03:47:02,535 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [633516908] [2022-04-08 03:47:02,535 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [633516908] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-08 03:47:02,535 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1794115444] [2022-04-08 03:47:02,535 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-08 03:47:02,535 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-08 03:47:02,535 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-08 03:47:02,536 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-08 03:47:02,537 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-04-08 03:47:02,572 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-04-08 03:47:02,572 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-08 03:47:02,573 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 3 conjunts are in the unsatisfiable core [2022-04-08 03:47:02,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-08 03:47:02,579 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-08 03:47:02,646 INFO L272 TraceCheckUtils]: 0: Hoare triple {577#true} call ULTIMATE.init(); {577#true} is VALID [2022-04-08 03:47:02,647 INFO L290 TraceCheckUtils]: 1: Hoare triple {577#true} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(12, 2); {577#true} is VALID [2022-04-08 03:47:02,647 INFO L290 TraceCheckUtils]: 2: Hoare triple {577#true} assume true; {577#true} is VALID [2022-04-08 03:47:02,647 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {577#true} {577#true} #63#return; {577#true} is VALID [2022-04-08 03:47:02,647 INFO L272 TraceCheckUtils]: 4: Hoare triple {577#true} call #t~ret5 := main(); {577#true} is VALID [2022-04-08 03:47:02,648 INFO L290 TraceCheckUtils]: 5: Hoare triple {577#true} call ~#A~0.base, ~#A~0.offset := #Ultimate.allocOnStack(4096);havoc ~i~0;~i~0 := 0; {603#(<= main_~i~0 0)} is VALID [2022-04-08 03:47:02,648 INFO L290 TraceCheckUtils]: 6: Hoare triple {603#(<= main_~i~0 0)} assume !!(~i~0 < 1024);assume -2147483648 <= #t~nondet2 && #t~nondet2 <= 2147483647;call write~int(#t~nondet2, ~#A~0.base, ~#A~0.offset + 4 * ~i~0, 4);havoc #t~nondet2; {603#(<= main_~i~0 0)} is VALID [2022-04-08 03:47:02,648 INFO L290 TraceCheckUtils]: 7: Hoare triple {603#(<= main_~i~0 0)} #t~post1 := ~i~0;~i~0 := 1 + #t~post1;havoc #t~post1; {583#(<= main_~i~0 1)} is VALID [2022-04-08 03:47:02,649 INFO L290 TraceCheckUtils]: 8: Hoare triple {583#(<= main_~i~0 1)} assume !(~i~0 < 1024); {578#false} is VALID [2022-04-08 03:47:02,649 INFO L290 TraceCheckUtils]: 9: Hoare triple {578#false} ~i~0 := 0; {578#false} is VALID [2022-04-08 03:47:02,649 INFO L290 TraceCheckUtils]: 10: Hoare triple {578#false} call #t~mem4 := read~int(~#A~0.base, ~#A~0.offset + 4 * ~i~0, 4); {578#false} is VALID [2022-04-08 03:47:02,649 INFO L290 TraceCheckUtils]: 11: Hoare triple {578#false} assume !!(0 != #t~mem4);havoc #t~mem4; {578#false} is VALID [2022-04-08 03:47:02,649 INFO L290 TraceCheckUtils]: 12: Hoare triple {578#false} assume !(~i~0 >= 1023); {578#false} is VALID [2022-04-08 03:47:02,650 INFO L290 TraceCheckUtils]: 13: Hoare triple {578#false} #t~post3 := ~i~0;~i~0 := 1 + #t~post3;havoc #t~post3; {578#false} is VALID [2022-04-08 03:47:02,650 INFO L290 TraceCheckUtils]: 14: Hoare triple {578#false} call #t~mem4 := read~int(~#A~0.base, ~#A~0.offset + 4 * ~i~0, 4); {578#false} is VALID [2022-04-08 03:47:02,650 INFO L290 TraceCheckUtils]: 15: Hoare triple {578#false} assume !(0 != #t~mem4);havoc #t~mem4; {578#false} is VALID [2022-04-08 03:47:02,650 INFO L272 TraceCheckUtils]: 16: Hoare triple {578#false} call __VERIFIER_assert((if ~i~0 <= 1024 then 1 else 0)); {578#false} is VALID [2022-04-08 03:47:02,650 INFO L290 TraceCheckUtils]: 17: Hoare triple {578#false} ~cond := #in~cond; {578#false} is VALID [2022-04-08 03:47:02,650 INFO L290 TraceCheckUtils]: 18: Hoare triple {578#false} assume 0 == ~cond; {578#false} is VALID [2022-04-08 03:47:02,650 INFO L290 TraceCheckUtils]: 19: Hoare triple {578#false} assume !false; {578#false} is VALID [2022-04-08 03:47:02,650 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-04-08 03:47:02,651 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-08 03:47:02,754 INFO L290 TraceCheckUtils]: 19: Hoare triple {578#false} assume !false; {578#false} is VALID [2022-04-08 03:47:02,754 INFO L290 TraceCheckUtils]: 18: Hoare triple {578#false} assume 0 == ~cond; {578#false} is VALID [2022-04-08 03:47:02,754 INFO L290 TraceCheckUtils]: 17: Hoare triple {578#false} ~cond := #in~cond; {578#false} is VALID [2022-04-08 03:47:02,754 INFO L272 TraceCheckUtils]: 16: Hoare triple {578#false} call __VERIFIER_assert((if ~i~0 <= 1024 then 1 else 0)); {578#false} is VALID [2022-04-08 03:47:02,755 INFO L290 TraceCheckUtils]: 15: Hoare triple {578#false} assume !(0 != #t~mem4);havoc #t~mem4; {578#false} is VALID [2022-04-08 03:47:02,755 INFO L290 TraceCheckUtils]: 14: Hoare triple {578#false} call #t~mem4 := read~int(~#A~0.base, ~#A~0.offset + 4 * ~i~0, 4); {578#false} is VALID [2022-04-08 03:47:02,755 INFO L290 TraceCheckUtils]: 13: Hoare triple {578#false} #t~post3 := ~i~0;~i~0 := 1 + #t~post3;havoc #t~post3; {578#false} is VALID [2022-04-08 03:47:02,755 INFO L290 TraceCheckUtils]: 12: Hoare triple {578#false} assume !(~i~0 >= 1023); {578#false} is VALID [2022-04-08 03:47:02,755 INFO L290 TraceCheckUtils]: 11: Hoare triple {578#false} assume !!(0 != #t~mem4);havoc #t~mem4; {578#false} is VALID [2022-04-08 03:47:02,755 INFO L290 TraceCheckUtils]: 10: Hoare triple {578#false} call #t~mem4 := read~int(~#A~0.base, ~#A~0.offset + 4 * ~i~0, 4); {578#false} is VALID [2022-04-08 03:47:02,755 INFO L290 TraceCheckUtils]: 9: Hoare triple {578#false} ~i~0 := 0; {578#false} is VALID [2022-04-08 03:47:02,760 INFO L290 TraceCheckUtils]: 8: Hoare triple {679#(< main_~i~0 1024)} assume !(~i~0 < 1024); {578#false} is VALID [2022-04-08 03:47:02,767 INFO L290 TraceCheckUtils]: 7: Hoare triple {683#(< main_~i~0 1023)} #t~post1 := ~i~0;~i~0 := 1 + #t~post1;havoc #t~post1; {679#(< main_~i~0 1024)} is VALID [2022-04-08 03:47:02,768 INFO L290 TraceCheckUtils]: 6: Hoare triple {683#(< main_~i~0 1023)} assume !!(~i~0 < 1024);assume -2147483648 <= #t~nondet2 && #t~nondet2 <= 2147483647;call write~int(#t~nondet2, ~#A~0.base, ~#A~0.offset + 4 * ~i~0, 4);havoc #t~nondet2; {683#(< main_~i~0 1023)} is VALID [2022-04-08 03:47:02,769 INFO L290 TraceCheckUtils]: 5: Hoare triple {577#true} call ~#A~0.base, ~#A~0.offset := #Ultimate.allocOnStack(4096);havoc ~i~0;~i~0 := 0; {683#(< main_~i~0 1023)} is VALID [2022-04-08 03:47:02,769 INFO L272 TraceCheckUtils]: 4: Hoare triple {577#true} call #t~ret5 := main(); {577#true} is VALID [2022-04-08 03:47:02,769 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {577#true} {577#true} #63#return; {577#true} is VALID [2022-04-08 03:47:02,769 INFO L290 TraceCheckUtils]: 2: Hoare triple {577#true} assume true; {577#true} is VALID [2022-04-08 03:47:02,769 INFO L290 TraceCheckUtils]: 1: Hoare triple {577#true} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(12, 2); {577#true} is VALID [2022-04-08 03:47:02,769 INFO L272 TraceCheckUtils]: 0: Hoare triple {577#true} call ULTIMATE.init(); {577#true} is VALID [2022-04-08 03:47:02,769 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-04-08 03:47:02,770 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1794115444] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-08 03:47:02,770 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-08 03:47:02,770 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 8 [2022-04-08 03:47:02,770 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-08 03:47:02,770 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1651552076] [2022-04-08 03:47:02,770 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1651552076] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-08 03:47:02,770 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-08 03:47:02,770 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-08 03:47:02,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053611178] [2022-04-08 03:47:02,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-08 03:47:02,771 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 20 [2022-04-08 03:47:02,771 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-08 03:47:02,772 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 03:47:02,794 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 19 edges. 19 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-08 03:47:02,794 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-04-08 03:47:02,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-08 03:47:02,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-04-08 03:47:02,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-04-08 03:47:02,795 INFO L87 Difference]: Start difference. First operand 22 states and 24 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 03:47:02,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 03:47:02,925 INFO L93 Difference]: Finished difference Result 44 states and 50 transitions. [2022-04-08 03:47:02,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-04-08 03:47:02,925 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 20 [2022-04-08 03:47:02,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-08 03:47:02,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 03:47:02,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 47 transitions. [2022-04-08 03:47:02,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 03:47:02,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 47 transitions. [2022-04-08 03:47:02,931 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 5 states and 47 transitions. [2022-04-08 03:47:02,975 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 47 edges. 47 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-08 03:47:02,975 INFO L225 Difference]: With dead ends: 44 [2022-04-08 03:47:02,976 INFO L226 Difference]: Without dead ends: 31 [2022-04-08 03:47:02,976 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2022-04-08 03:47:02,976 INFO L913 BasicCegarLoop]: 15 mSDtfsCounter, 32 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-08 03:47:02,977 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [32 Valid, 27 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-08 03:47:02,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2022-04-08 03:47:02,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 28. [2022-04-08 03:47:02,989 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-08 03:47:02,990 INFO L82 GeneralOperation]: Start isEquivalent. First operand 31 states. Second operand has 28 states, 23 states have (on average 1.173913043478261) internal successors, (27), 23 states have internal predecessors, (27), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 03:47:02,990 INFO L74 IsIncluded]: Start isIncluded. First operand 31 states. Second operand has 28 states, 23 states have (on average 1.173913043478261) internal successors, (27), 23 states have internal predecessors, (27), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 03:47:02,990 INFO L87 Difference]: Start difference. First operand 31 states. Second operand has 28 states, 23 states have (on average 1.173913043478261) internal successors, (27), 23 states have internal predecessors, (27), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 03:47:02,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 03:47:02,991 INFO L93 Difference]: Finished difference Result 31 states and 34 transitions. [2022-04-08 03:47:02,991 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 34 transitions. [2022-04-08 03:47:02,992 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-08 03:47:02,992 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-08 03:47:02,992 INFO L74 IsIncluded]: Start isIncluded. First operand has 28 states, 23 states have (on average 1.173913043478261) internal successors, (27), 23 states have internal predecessors, (27), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Second operand 31 states. [2022-04-08 03:47:02,992 INFO L87 Difference]: Start difference. First operand has 28 states, 23 states have (on average 1.173913043478261) internal successors, (27), 23 states have internal predecessors, (27), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Second operand 31 states. [2022-04-08 03:47:02,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 03:47:02,993 INFO L93 Difference]: Finished difference Result 31 states and 34 transitions. [2022-04-08 03:47:02,993 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 34 transitions. [2022-04-08 03:47:02,993 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-08 03:47:02,993 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-08 03:47:02,993 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-08 03:47:02,993 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-08 03:47:02,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 23 states have (on average 1.173913043478261) internal successors, (27), 23 states have internal predecessors, (27), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 03:47:02,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 31 transitions. [2022-04-08 03:47:02,994 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 31 transitions. Word has length 20 [2022-04-08 03:47:02,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-08 03:47:02,995 INFO L478 AbstractCegarLoop]: Abstraction has 28 states and 31 transitions. [2022-04-08 03:47:02,995 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 03:47:02,995 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 28 states and 31 transitions. [2022-04-08 03:47:03,020 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 31 edges. 31 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-08 03:47:03,021 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 31 transitions. [2022-04-08 03:47:03,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-04-08 03:47:03,022 INFO L491 BasicCegarLoop]: Found error trace [2022-04-08 03:47:03,022 INFO L499 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-08 03:47:03,041 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-04-08 03:47:03,232 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2022-04-08 03:47:03,232 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-08 03:47:03,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-08 03:47:03,233 INFO L85 PathProgramCache]: Analyzing trace with hash -746180299, now seen corresponding path program 3 times [2022-04-08 03:47:03,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-08 03:47:03,233 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1791686905] [2022-04-08 03:47:03,239 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-04-08 03:47:03,239 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-04-08 03:47:03,239 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-08 03:47:03,239 INFO L85 PathProgramCache]: Analyzing trace with hash -746180299, now seen corresponding path program 4 times [2022-04-08 03:47:03,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-08 03:47:03,239 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630511374] [2022-04-08 03:47:03,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-08 03:47:03,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-08 03:47:03,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-08 03:47:03,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-08 03:47:03,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-08 03:47:03,311 INFO L290 TraceCheckUtils]: 0: Hoare triple {926#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(12, 2); {917#true} is VALID [2022-04-08 03:47:03,312 INFO L290 TraceCheckUtils]: 1: Hoare triple {917#true} assume true; {917#true} is VALID [2022-04-08 03:47:03,312 INFO L284 TraceCheckUtils]: 2: Hoare quadruple {917#true} {917#true} #63#return; {917#true} is VALID [2022-04-08 03:47:03,312 INFO L272 TraceCheckUtils]: 0: Hoare triple {917#true} call ULTIMATE.init(); {926#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} is VALID [2022-04-08 03:47:03,313 INFO L290 TraceCheckUtils]: 1: Hoare triple {926#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(12, 2); {917#true} is VALID [2022-04-08 03:47:03,313 INFO L290 TraceCheckUtils]: 2: Hoare triple {917#true} assume true; {917#true} is VALID [2022-04-08 03:47:03,313 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {917#true} {917#true} #63#return; {917#true} is VALID [2022-04-08 03:47:03,313 INFO L272 TraceCheckUtils]: 4: Hoare triple {917#true} call #t~ret5 := main(); {917#true} is VALID [2022-04-08 03:47:03,313 INFO L290 TraceCheckUtils]: 5: Hoare triple {917#true} call ~#A~0.base, ~#A~0.offset := #Ultimate.allocOnStack(4096);havoc ~i~0;~i~0 := 0; {917#true} is VALID [2022-04-08 03:47:03,313 INFO L290 TraceCheckUtils]: 6: Hoare triple {917#true} assume !!(~i~0 < 1024);assume -2147483648 <= #t~nondet2 && #t~nondet2 <= 2147483647;call write~int(#t~nondet2, ~#A~0.base, ~#A~0.offset + 4 * ~i~0, 4);havoc #t~nondet2; {917#true} is VALID [2022-04-08 03:47:03,314 INFO L290 TraceCheckUtils]: 7: Hoare triple {917#true} #t~post1 := ~i~0;~i~0 := 1 + #t~post1;havoc #t~post1; {917#true} is VALID [2022-04-08 03:47:03,314 INFO L290 TraceCheckUtils]: 8: Hoare triple {917#true} assume !!(~i~0 < 1024);assume -2147483648 <= #t~nondet2 && #t~nondet2 <= 2147483647;call write~int(#t~nondet2, ~#A~0.base, ~#A~0.offset + 4 * ~i~0, 4);havoc #t~nondet2; {917#true} is VALID [2022-04-08 03:47:03,314 INFO L290 TraceCheckUtils]: 9: Hoare triple {917#true} #t~post1 := ~i~0;~i~0 := 1 + #t~post1;havoc #t~post1; {917#true} is VALID [2022-04-08 03:47:03,314 INFO L290 TraceCheckUtils]: 10: Hoare triple {917#true} assume !(~i~0 < 1024); {917#true} is VALID [2022-04-08 03:47:03,314 INFO L290 TraceCheckUtils]: 11: Hoare triple {917#true} ~i~0 := 0; {922#(= main_~i~0 0)} is VALID [2022-04-08 03:47:03,315 INFO L290 TraceCheckUtils]: 12: Hoare triple {922#(= main_~i~0 0)} call #t~mem4 := read~int(~#A~0.base, ~#A~0.offset + 4 * ~i~0, 4); {922#(= main_~i~0 0)} is VALID [2022-04-08 03:47:03,315 INFO L290 TraceCheckUtils]: 13: Hoare triple {922#(= main_~i~0 0)} assume !!(0 != #t~mem4);havoc #t~mem4; {922#(= main_~i~0 0)} is VALID [2022-04-08 03:47:03,316 INFO L290 TraceCheckUtils]: 14: Hoare triple {922#(= main_~i~0 0)} assume !(~i~0 >= 1023); {922#(= main_~i~0 0)} is VALID [2022-04-08 03:47:03,316 INFO L290 TraceCheckUtils]: 15: Hoare triple {922#(= main_~i~0 0)} #t~post3 := ~i~0;~i~0 := 1 + #t~post3;havoc #t~post3; {923#(<= main_~i~0 1)} is VALID [2022-04-08 03:47:03,316 INFO L290 TraceCheckUtils]: 16: Hoare triple {923#(<= main_~i~0 1)} call #t~mem4 := read~int(~#A~0.base, ~#A~0.offset + 4 * ~i~0, 4); {923#(<= main_~i~0 1)} is VALID [2022-04-08 03:47:03,317 INFO L290 TraceCheckUtils]: 17: Hoare triple {923#(<= main_~i~0 1)} assume !(0 != #t~mem4);havoc #t~mem4; {923#(<= main_~i~0 1)} is VALID [2022-04-08 03:47:03,318 INFO L272 TraceCheckUtils]: 18: Hoare triple {923#(<= main_~i~0 1)} call __VERIFIER_assert((if ~i~0 <= 1024 then 1 else 0)); {924#(not (= |__VERIFIER_assert_#in~cond| 0))} is VALID [2022-04-08 03:47:03,318 INFO L290 TraceCheckUtils]: 19: Hoare triple {924#(not (= |__VERIFIER_assert_#in~cond| 0))} ~cond := #in~cond; {925#(not (= __VERIFIER_assert_~cond 0))} is VALID [2022-04-08 03:47:03,318 INFO L290 TraceCheckUtils]: 20: Hoare triple {925#(not (= __VERIFIER_assert_~cond 0))} assume 0 == ~cond; {918#false} is VALID [2022-04-08 03:47:03,319 INFO L290 TraceCheckUtils]: 21: Hoare triple {918#false} assume !false; {918#false} is VALID [2022-04-08 03:47:03,319 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-04-08 03:47:03,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-08 03:47:03,319 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630511374] [2022-04-08 03:47:03,319 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1630511374] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-08 03:47:03,319 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1112130812] [2022-04-08 03:47:03,320 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-04-08 03:47:03,320 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-08 03:47:03,320 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-08 03:47:03,321 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-08 03:47:03,345 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-04-08 03:47:03,373 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-04-08 03:47:03,373 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-08 03:47:03,374 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 4 conjunts are in the unsatisfiable core [2022-04-08 03:47:03,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-08 03:47:03,380 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-08 03:47:03,457 INFO L272 TraceCheckUtils]: 0: Hoare triple {917#true} call ULTIMATE.init(); {917#true} is VALID [2022-04-08 03:47:03,457 INFO L290 TraceCheckUtils]: 1: Hoare triple {917#true} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(12, 2); {917#true} is VALID [2022-04-08 03:47:03,457 INFO L290 TraceCheckUtils]: 2: Hoare triple {917#true} assume true; {917#true} is VALID [2022-04-08 03:47:03,457 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {917#true} {917#true} #63#return; {917#true} is VALID [2022-04-08 03:47:03,458 INFO L272 TraceCheckUtils]: 4: Hoare triple {917#true} call #t~ret5 := main(); {917#true} is VALID [2022-04-08 03:47:03,458 INFO L290 TraceCheckUtils]: 5: Hoare triple {917#true} call ~#A~0.base, ~#A~0.offset := #Ultimate.allocOnStack(4096);havoc ~i~0;~i~0 := 0; {945#(<= main_~i~0 0)} is VALID [2022-04-08 03:47:03,458 INFO L290 TraceCheckUtils]: 6: Hoare triple {945#(<= main_~i~0 0)} assume !!(~i~0 < 1024);assume -2147483648 <= #t~nondet2 && #t~nondet2 <= 2147483647;call write~int(#t~nondet2, ~#A~0.base, ~#A~0.offset + 4 * ~i~0, 4);havoc #t~nondet2; {945#(<= main_~i~0 0)} is VALID [2022-04-08 03:47:03,459 INFO L290 TraceCheckUtils]: 7: Hoare triple {945#(<= main_~i~0 0)} #t~post1 := ~i~0;~i~0 := 1 + #t~post1;havoc #t~post1; {923#(<= main_~i~0 1)} is VALID [2022-04-08 03:47:03,460 INFO L290 TraceCheckUtils]: 8: Hoare triple {923#(<= main_~i~0 1)} assume !!(~i~0 < 1024);assume -2147483648 <= #t~nondet2 && #t~nondet2 <= 2147483647;call write~int(#t~nondet2, ~#A~0.base, ~#A~0.offset + 4 * ~i~0, 4);havoc #t~nondet2; {923#(<= main_~i~0 1)} is VALID [2022-04-08 03:47:03,460 INFO L290 TraceCheckUtils]: 9: Hoare triple {923#(<= main_~i~0 1)} #t~post1 := ~i~0;~i~0 := 1 + #t~post1;havoc #t~post1; {958#(<= main_~i~0 2)} is VALID [2022-04-08 03:47:03,461 INFO L290 TraceCheckUtils]: 10: Hoare triple {958#(<= main_~i~0 2)} assume !(~i~0 < 1024); {918#false} is VALID [2022-04-08 03:47:03,461 INFO L290 TraceCheckUtils]: 11: Hoare triple {918#false} ~i~0 := 0; {918#false} is VALID [2022-04-08 03:47:03,461 INFO L290 TraceCheckUtils]: 12: Hoare triple {918#false} call #t~mem4 := read~int(~#A~0.base, ~#A~0.offset + 4 * ~i~0, 4); {918#false} is VALID [2022-04-08 03:47:03,461 INFO L290 TraceCheckUtils]: 13: Hoare triple {918#false} assume !!(0 != #t~mem4);havoc #t~mem4; {918#false} is VALID [2022-04-08 03:47:03,461 INFO L290 TraceCheckUtils]: 14: Hoare triple {918#false} assume !(~i~0 >= 1023); {918#false} is VALID [2022-04-08 03:47:03,461 INFO L290 TraceCheckUtils]: 15: Hoare triple {918#false} #t~post3 := ~i~0;~i~0 := 1 + #t~post3;havoc #t~post3; {918#false} is VALID [2022-04-08 03:47:03,461 INFO L290 TraceCheckUtils]: 16: Hoare triple {918#false} call #t~mem4 := read~int(~#A~0.base, ~#A~0.offset + 4 * ~i~0, 4); {918#false} is VALID [2022-04-08 03:47:03,462 INFO L290 TraceCheckUtils]: 17: Hoare triple {918#false} assume !(0 != #t~mem4);havoc #t~mem4; {918#false} is VALID [2022-04-08 03:47:03,462 INFO L272 TraceCheckUtils]: 18: Hoare triple {918#false} call __VERIFIER_assert((if ~i~0 <= 1024 then 1 else 0)); {918#false} is VALID [2022-04-08 03:47:03,462 INFO L290 TraceCheckUtils]: 19: Hoare triple {918#false} ~cond := #in~cond; {918#false} is VALID [2022-04-08 03:47:03,462 INFO L290 TraceCheckUtils]: 20: Hoare triple {918#false} assume 0 == ~cond; {918#false} is VALID [2022-04-08 03:47:03,462 INFO L290 TraceCheckUtils]: 21: Hoare triple {918#false} assume !false; {918#false} is VALID [2022-04-08 03:47:03,462 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-04-08 03:47:03,462 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-08 03:47:03,558 INFO L290 TraceCheckUtils]: 21: Hoare triple {918#false} assume !false; {918#false} is VALID [2022-04-08 03:47:03,558 INFO L290 TraceCheckUtils]: 20: Hoare triple {918#false} assume 0 == ~cond; {918#false} is VALID [2022-04-08 03:47:03,558 INFO L290 TraceCheckUtils]: 19: Hoare triple {918#false} ~cond := #in~cond; {918#false} is VALID [2022-04-08 03:47:03,558 INFO L272 TraceCheckUtils]: 18: Hoare triple {918#false} call __VERIFIER_assert((if ~i~0 <= 1024 then 1 else 0)); {918#false} is VALID [2022-04-08 03:47:03,559 INFO L290 TraceCheckUtils]: 17: Hoare triple {918#false} assume !(0 != #t~mem4);havoc #t~mem4; {918#false} is VALID [2022-04-08 03:47:03,559 INFO L290 TraceCheckUtils]: 16: Hoare triple {918#false} call #t~mem4 := read~int(~#A~0.base, ~#A~0.offset + 4 * ~i~0, 4); {918#false} is VALID [2022-04-08 03:47:03,559 INFO L290 TraceCheckUtils]: 15: Hoare triple {918#false} #t~post3 := ~i~0;~i~0 := 1 + #t~post3;havoc #t~post3; {918#false} is VALID [2022-04-08 03:47:03,559 INFO L290 TraceCheckUtils]: 14: Hoare triple {918#false} assume !(~i~0 >= 1023); {918#false} is VALID [2022-04-08 03:47:03,559 INFO L290 TraceCheckUtils]: 13: Hoare triple {918#false} assume !!(0 != #t~mem4);havoc #t~mem4; {918#false} is VALID [2022-04-08 03:47:03,559 INFO L290 TraceCheckUtils]: 12: Hoare triple {918#false} call #t~mem4 := read~int(~#A~0.base, ~#A~0.offset + 4 * ~i~0, 4); {918#false} is VALID [2022-04-08 03:47:03,559 INFO L290 TraceCheckUtils]: 11: Hoare triple {918#false} ~i~0 := 0; {918#false} is VALID [2022-04-08 03:47:03,560 INFO L290 TraceCheckUtils]: 10: Hoare triple {1028#(< main_~i~0 1024)} assume !(~i~0 < 1024); {918#false} is VALID [2022-04-08 03:47:03,560 INFO L290 TraceCheckUtils]: 9: Hoare triple {1032#(< main_~i~0 1023)} #t~post1 := ~i~0;~i~0 := 1 + #t~post1;havoc #t~post1; {1028#(< main_~i~0 1024)} is VALID [2022-04-08 03:47:03,560 INFO L290 TraceCheckUtils]: 8: Hoare triple {1032#(< main_~i~0 1023)} assume !!(~i~0 < 1024);assume -2147483648 <= #t~nondet2 && #t~nondet2 <= 2147483647;call write~int(#t~nondet2, ~#A~0.base, ~#A~0.offset + 4 * ~i~0, 4);havoc #t~nondet2; {1032#(< main_~i~0 1023)} is VALID [2022-04-08 03:47:03,561 INFO L290 TraceCheckUtils]: 7: Hoare triple {1039#(< main_~i~0 1022)} #t~post1 := ~i~0;~i~0 := 1 + #t~post1;havoc #t~post1; {1032#(< main_~i~0 1023)} is VALID [2022-04-08 03:47:03,561 INFO L290 TraceCheckUtils]: 6: Hoare triple {1039#(< main_~i~0 1022)} assume !!(~i~0 < 1024);assume -2147483648 <= #t~nondet2 && #t~nondet2 <= 2147483647;call write~int(#t~nondet2, ~#A~0.base, ~#A~0.offset + 4 * ~i~0, 4);havoc #t~nondet2; {1039#(< main_~i~0 1022)} is VALID [2022-04-08 03:47:03,562 INFO L290 TraceCheckUtils]: 5: Hoare triple {917#true} call ~#A~0.base, ~#A~0.offset := #Ultimate.allocOnStack(4096);havoc ~i~0;~i~0 := 0; {1039#(< main_~i~0 1022)} is VALID [2022-04-08 03:47:03,562 INFO L272 TraceCheckUtils]: 4: Hoare triple {917#true} call #t~ret5 := main(); {917#true} is VALID [2022-04-08 03:47:03,562 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {917#true} {917#true} #63#return; {917#true} is VALID [2022-04-08 03:47:03,562 INFO L290 TraceCheckUtils]: 2: Hoare triple {917#true} assume true; {917#true} is VALID [2022-04-08 03:47:03,562 INFO L290 TraceCheckUtils]: 1: Hoare triple {917#true} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(12, 2); {917#true} is VALID [2022-04-08 03:47:03,562 INFO L272 TraceCheckUtils]: 0: Hoare triple {917#true} call ULTIMATE.init(); {917#true} is VALID [2022-04-08 03:47:03,562 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-04-08 03:47:03,562 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1112130812] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-08 03:47:03,563 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-08 03:47:03,563 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 12 [2022-04-08 03:47:03,563 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-08 03:47:03,563 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1791686905] [2022-04-08 03:47:03,563 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1791686905] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-08 03:47:03,563 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-08 03:47:03,563 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-04-08 03:47:03,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556814690] [2022-04-08 03:47:03,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-08 03:47:03,564 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 5 states have internal predecessors, (16), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 22 [2022-04-08 03:47:03,564 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-08 03:47:03,564 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 5 states have internal predecessors, (16), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 03:47:03,574 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 20 edges. 20 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-08 03:47:03,574 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-04-08 03:47:03,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-08 03:47:03,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-04-08 03:47:03,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2022-04-08 03:47:03,575 INFO L87 Difference]: Start difference. First operand 28 states and 31 transitions. Second operand has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 5 states have internal predecessors, (16), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 03:47:03,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 03:47:03,722 INFO L93 Difference]: Finished difference Result 35 states and 37 transitions. [2022-04-08 03:47:03,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-04-08 03:47:03,723 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 5 states have internal predecessors, (16), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 22 [2022-04-08 03:47:03,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-08 03:47:03,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 5 states have internal predecessors, (16), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 03:47:03,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 37 transitions. [2022-04-08 03:47:03,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 5 states have internal predecessors, (16), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 03:47:03,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 37 transitions. [2022-04-08 03:47:03,726 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 7 states and 37 transitions. [2022-04-08 03:47:03,754 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 37 edges. 37 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-08 03:47:03,755 INFO L225 Difference]: With dead ends: 35 [2022-04-08 03:47:03,755 INFO L226 Difference]: Without dead ends: 30 [2022-04-08 03:47:03,755 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2022-04-08 03:47:03,756 INFO L913 BasicCegarLoop]: 14 mSDtfsCounter, 32 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-08 03:47:03,756 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [32 Valid, 31 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-08 03:47:03,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2022-04-08 03:47:03,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 28. [2022-04-08 03:47:03,768 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-08 03:47:03,768 INFO L82 GeneralOperation]: Start isEquivalent. First operand 30 states. Second operand has 28 states, 23 states have (on average 1.1304347826086956) internal successors, (26), 23 states have internal predecessors, (26), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 03:47:03,768 INFO L74 IsIncluded]: Start isIncluded. First operand 30 states. Second operand has 28 states, 23 states have (on average 1.1304347826086956) internal successors, (26), 23 states have internal predecessors, (26), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 03:47:03,768 INFO L87 Difference]: Start difference. First operand 30 states. Second operand has 28 states, 23 states have (on average 1.1304347826086956) internal successors, (26), 23 states have internal predecessors, (26), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 03:47:03,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 03:47:03,770 INFO L93 Difference]: Finished difference Result 30 states and 32 transitions. [2022-04-08 03:47:03,770 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 32 transitions. [2022-04-08 03:47:03,770 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-08 03:47:03,770 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-08 03:47:03,770 INFO L74 IsIncluded]: Start isIncluded. First operand has 28 states, 23 states have (on average 1.1304347826086956) internal successors, (26), 23 states have internal predecessors, (26), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Second operand 30 states. [2022-04-08 03:47:03,770 INFO L87 Difference]: Start difference. First operand has 28 states, 23 states have (on average 1.1304347826086956) internal successors, (26), 23 states have internal predecessors, (26), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Second operand 30 states. [2022-04-08 03:47:03,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 03:47:03,772 INFO L93 Difference]: Finished difference Result 30 states and 32 transitions. [2022-04-08 03:47:03,772 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 32 transitions. [2022-04-08 03:47:03,772 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-08 03:47:03,772 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-08 03:47:03,772 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-08 03:47:03,772 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-08 03:47:03,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 23 states have (on average 1.1304347826086956) internal successors, (26), 23 states have internal predecessors, (26), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 03:47:03,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 30 transitions. [2022-04-08 03:47:03,773 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 30 transitions. Word has length 22 [2022-04-08 03:47:03,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-08 03:47:03,773 INFO L478 AbstractCegarLoop]: Abstraction has 28 states and 30 transitions. [2022-04-08 03:47:03,774 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 5 states have internal predecessors, (16), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 03:47:03,774 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 28 states and 30 transitions. [2022-04-08 03:47:03,796 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 30 edges. 30 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-08 03:47:03,796 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 30 transitions. [2022-04-08 03:47:03,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-04-08 03:47:03,797 INFO L491 BasicCegarLoop]: Found error trace [2022-04-08 03:47:03,797 INFO L499 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-08 03:47:03,831 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-04-08 03:47:04,031 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-08 03:47:04,032 INFO L403 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-08 03:47:04,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-08 03:47:04,032 INFO L85 PathProgramCache]: Analyzing trace with hash -1353970500, now seen corresponding path program 5 times [2022-04-08 03:47:04,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-08 03:47:04,032 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [579706102] [2022-04-08 03:47:04,036 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-04-08 03:47:04,036 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-04-08 03:47:04,037 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-08 03:47:04,037 INFO L85 PathProgramCache]: Analyzing trace with hash -1353970500, now seen corresponding path program 6 times [2022-04-08 03:47:04,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-08 03:47:04,037 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500927926] [2022-04-08 03:47:04,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-08 03:47:04,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-08 03:47:04,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-08 03:47:04,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-08 03:47:04,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-08 03:47:04,107 INFO L290 TraceCheckUtils]: 0: Hoare triple {1268#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(12, 2); {1259#true} is VALID [2022-04-08 03:47:04,108 INFO L290 TraceCheckUtils]: 1: Hoare triple {1259#true} assume true; {1259#true} is VALID [2022-04-08 03:47:04,108 INFO L284 TraceCheckUtils]: 2: Hoare quadruple {1259#true} {1259#true} #63#return; {1259#true} is VALID [2022-04-08 03:47:04,108 INFO L272 TraceCheckUtils]: 0: Hoare triple {1259#true} call ULTIMATE.init(); {1268#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} is VALID [2022-04-08 03:47:04,108 INFO L290 TraceCheckUtils]: 1: Hoare triple {1268#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(12, 2); {1259#true} is VALID [2022-04-08 03:47:04,109 INFO L290 TraceCheckUtils]: 2: Hoare triple {1259#true} assume true; {1259#true} is VALID [2022-04-08 03:47:04,109 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {1259#true} {1259#true} #63#return; {1259#true} is VALID [2022-04-08 03:47:04,109 INFO L272 TraceCheckUtils]: 4: Hoare triple {1259#true} call #t~ret5 := main(); {1259#true} is VALID [2022-04-08 03:47:04,109 INFO L290 TraceCheckUtils]: 5: Hoare triple {1259#true} call ~#A~0.base, ~#A~0.offset := #Ultimate.allocOnStack(4096);havoc ~i~0;~i~0 := 0; {1259#true} is VALID [2022-04-08 03:47:04,109 INFO L290 TraceCheckUtils]: 6: Hoare triple {1259#true} assume !!(~i~0 < 1024);assume -2147483648 <= #t~nondet2 && #t~nondet2 <= 2147483647;call write~int(#t~nondet2, ~#A~0.base, ~#A~0.offset + 4 * ~i~0, 4);havoc #t~nondet2; {1259#true} is VALID [2022-04-08 03:47:04,109 INFO L290 TraceCheckUtils]: 7: Hoare triple {1259#true} #t~post1 := ~i~0;~i~0 := 1 + #t~post1;havoc #t~post1; {1259#true} is VALID [2022-04-08 03:47:04,109 INFO L290 TraceCheckUtils]: 8: Hoare triple {1259#true} assume !!(~i~0 < 1024);assume -2147483648 <= #t~nondet2 && #t~nondet2 <= 2147483647;call write~int(#t~nondet2, ~#A~0.base, ~#A~0.offset + 4 * ~i~0, 4);havoc #t~nondet2; {1259#true} is VALID [2022-04-08 03:47:04,110 INFO L290 TraceCheckUtils]: 9: Hoare triple {1259#true} #t~post1 := ~i~0;~i~0 := 1 + #t~post1;havoc #t~post1; {1259#true} is VALID [2022-04-08 03:47:04,110 INFO L290 TraceCheckUtils]: 10: Hoare triple {1259#true} assume !(~i~0 < 1024); {1259#true} is VALID [2022-04-08 03:47:04,110 INFO L290 TraceCheckUtils]: 11: Hoare triple {1259#true} ~i~0 := 0; {1259#true} is VALID [2022-04-08 03:47:04,110 INFO L290 TraceCheckUtils]: 12: Hoare triple {1259#true} call #t~mem4 := read~int(~#A~0.base, ~#A~0.offset + 4 * ~i~0, 4); {1259#true} is VALID [2022-04-08 03:47:04,110 INFO L290 TraceCheckUtils]: 13: Hoare triple {1259#true} assume !!(0 != #t~mem4);havoc #t~mem4; {1259#true} is VALID [2022-04-08 03:47:04,110 INFO L290 TraceCheckUtils]: 14: Hoare triple {1259#true} assume !(~i~0 >= 1023); {1259#true} is VALID [2022-04-08 03:47:04,110 INFO L290 TraceCheckUtils]: 15: Hoare triple {1259#true} #t~post3 := ~i~0;~i~0 := 1 + #t~post3;havoc #t~post3; {1259#true} is VALID [2022-04-08 03:47:04,111 INFO L290 TraceCheckUtils]: 16: Hoare triple {1259#true} call #t~mem4 := read~int(~#A~0.base, ~#A~0.offset + 4 * ~i~0, 4); {1259#true} is VALID [2022-04-08 03:47:04,111 INFO L290 TraceCheckUtils]: 17: Hoare triple {1259#true} assume !!(0 != #t~mem4);havoc #t~mem4; {1259#true} is VALID [2022-04-08 03:47:04,111 INFO L290 TraceCheckUtils]: 18: Hoare triple {1259#true} assume !(~i~0 >= 1023); {1264#(<= main_~i~0 1022)} is VALID [2022-04-08 03:47:04,112 INFO L290 TraceCheckUtils]: 19: Hoare triple {1264#(<= main_~i~0 1022)} #t~post3 := ~i~0;~i~0 := 1 + #t~post3;havoc #t~post3; {1265#(<= main_~i~0 1023)} is VALID [2022-04-08 03:47:04,112 INFO L290 TraceCheckUtils]: 20: Hoare triple {1265#(<= main_~i~0 1023)} call #t~mem4 := read~int(~#A~0.base, ~#A~0.offset + 4 * ~i~0, 4); {1265#(<= main_~i~0 1023)} is VALID [2022-04-08 03:47:04,113 INFO L290 TraceCheckUtils]: 21: Hoare triple {1265#(<= main_~i~0 1023)} assume !(0 != #t~mem4);havoc #t~mem4; {1265#(<= main_~i~0 1023)} is VALID [2022-04-08 03:47:04,113 INFO L272 TraceCheckUtils]: 22: Hoare triple {1265#(<= main_~i~0 1023)} call __VERIFIER_assert((if ~i~0 <= 1024 then 1 else 0)); {1266#(not (= |__VERIFIER_assert_#in~cond| 0))} is VALID [2022-04-08 03:47:04,114 INFO L290 TraceCheckUtils]: 23: Hoare triple {1266#(not (= |__VERIFIER_assert_#in~cond| 0))} ~cond := #in~cond; {1267#(not (= __VERIFIER_assert_~cond 0))} is VALID [2022-04-08 03:47:04,114 INFO L290 TraceCheckUtils]: 24: Hoare triple {1267#(not (= __VERIFIER_assert_~cond 0))} assume 0 == ~cond; {1260#false} is VALID [2022-04-08 03:47:04,114 INFO L290 TraceCheckUtils]: 25: Hoare triple {1260#false} assume !false; {1260#false} is VALID [2022-04-08 03:47:04,114 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-04-08 03:47:04,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-08 03:47:04,115 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500927926] [2022-04-08 03:47:04,115 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [500927926] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-08 03:47:04,115 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-08 03:47:04,115 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-04-08 03:47:04,115 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-08 03:47:04,115 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [579706102] [2022-04-08 03:47:04,115 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [579706102] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-08 03:47:04,115 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-08 03:47:04,115 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-04-08 03:47:04,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111161315] [2022-04-08 03:47:04,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-08 03:47:04,116 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 5 states have internal predecessors, (18), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 26 [2022-04-08 03:47:04,116 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-08 03:47:04,116 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 5 states have internal predecessors, (18), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 03:47:04,132 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 22 edges. 22 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-08 03:47:04,132 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-04-08 03:47:04,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-08 03:47:04,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-04-08 03:47:04,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-04-08 03:47:04,133 INFO L87 Difference]: Start difference. First operand 28 states and 30 transitions. Second operand has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 5 states have internal predecessors, (18), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 03:47:04,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 03:47:04,282 INFO L93 Difference]: Finished difference Result 28 states and 30 transitions. [2022-04-08 03:47:04,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-04-08 03:47:04,283 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 5 states have internal predecessors, (18), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 26 [2022-04-08 03:47:04,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-08 03:47:04,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 5 states have internal predecessors, (18), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 03:47:04,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 26 transitions. [2022-04-08 03:47:04,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 5 states have internal predecessors, (18), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 03:47:04,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 26 transitions. [2022-04-08 03:47:04,285 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 7 states and 26 transitions. [2022-04-08 03:47:04,306 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 26 edges. 26 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-08 03:47:04,307 INFO L225 Difference]: With dead ends: 28 [2022-04-08 03:47:04,307 INFO L226 Difference]: Without dead ends: 0 [2022-04-08 03:47:04,307 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2022-04-08 03:47:04,308 INFO L913 BasicCegarLoop]: 11 mSDtfsCounter, 24 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-08 03:47:04,308 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [24 Valid, 33 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-08 03:47:04,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-04-08 03:47:04,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-04-08 03:47:04,309 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-08 03:47:04,309 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) [2022-04-08 03:47:04,309 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) [2022-04-08 03:47:04,309 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) [2022-04-08 03:47:04,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 03:47:04,309 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2022-04-08 03:47:04,309 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-04-08 03:47:04,310 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-08 03:47:04,310 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-08 03:47:04,310 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. [2022-04-08 03:47:04,310 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. [2022-04-08 03:47:04,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 03:47:04,310 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2022-04-08 03:47:04,310 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-04-08 03:47:04,310 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-08 03:47:04,310 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-08 03:47:04,310 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-08 03:47:04,310 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-08 03:47:04,310 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) [2022-04-08 03:47:04,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-04-08 03:47:04,311 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 26 [2022-04-08 03:47:04,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-08 03:47:04,311 INFO L478 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-04-08 03:47:04,311 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 5 states have internal predecessors, (18), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 03:47:04,311 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 0 states and 0 transitions. [2022-04-08 03:47:04,311 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 0 edges. 0 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-08 03:47:04,311 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-04-08 03:47:04,311 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-08 03:47:04,314 INFO L788 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-04-08 03:47:04,314 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-04-08 03:47:04,316 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-04-08 03:47:04,452 INFO L882 garLoopResultBuilder]: For program point reach_errorEXIT(line 12) no Hoare annotation was computed. [2022-04-08 03:47:04,452 INFO L882 garLoopResultBuilder]: For program point reach_errorENTRY(line 12) no Hoare annotation was computed. [2022-04-08 03:47:04,452 INFO L882 garLoopResultBuilder]: For program point L12-1(line 12) no Hoare annotation was computed. [2022-04-08 03:47:04,452 INFO L885 garLoopResultBuilder]: At program point L33(line 33) the Hoare annotation is: true [2022-04-08 03:47:04,453 INFO L878 garLoopResultBuilder]: At program point L29(lines 29 31) the Hoare annotation is: (<= main_~i~0 1023) [2022-04-08 03:47:04,453 INFO L885 garLoopResultBuilder]: At program point mainEXIT(lines 20 34) the Hoare annotation is: true [2022-04-08 03:47:04,453 INFO L885 garLoopResultBuilder]: At program point mainFINAL(lines 20 34) the Hoare annotation is: true [2022-04-08 03:47:04,453 INFO L885 garLoopResultBuilder]: At program point mainENTRY(lines 20 34) the Hoare annotation is: true [2022-04-08 03:47:04,453 INFO L878 garLoopResultBuilder]: At program point L28-1(lines 28 32) the Hoare annotation is: (<= main_~i~0 1023) [2022-04-08 03:47:04,453 INFO L878 garLoopResultBuilder]: At program point L28-3(lines 28 32) the Hoare annotation is: (<= main_~i~0 1022) [2022-04-08 03:47:04,453 INFO L878 garLoopResultBuilder]: At program point L28-4(lines 28 32) the Hoare annotation is: (<= main_~i~0 1023) [2022-04-08 03:47:04,453 INFO L878 garLoopResultBuilder]: At program point L28-5(lines 28 32) the Hoare annotation is: (<= main_~i~0 1023) [2022-04-08 03:47:04,453 INFO L878 garLoopResultBuilder]: At program point L24-2(lines 24 26) the Hoare annotation is: (<= main_~i~0 1023) [2022-04-08 03:47:04,453 INFO L885 garLoopResultBuilder]: At program point L24-3(lines 24 26) the Hoare annotation is: true [2022-04-08 03:47:04,453 INFO L885 garLoopResultBuilder]: At program point L24-4(lines 24 26) the Hoare annotation is: true [2022-04-08 03:47:04,454 INFO L885 garLoopResultBuilder]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2022-04-08 03:47:04,454 INFO L878 garLoopResultBuilder]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|)) [2022-04-08 03:47:04,454 INFO L885 garLoopResultBuilder]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2022-04-08 03:47:04,454 INFO L885 garLoopResultBuilder]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2022-04-08 03:47:04,454 INFO L885 garLoopResultBuilder]: At program point L-1(line -1) the Hoare annotation is: true [2022-04-08 03:47:04,454 INFO L885 garLoopResultBuilder]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2022-04-08 03:47:04,454 INFO L885 garLoopResultBuilder]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2022-04-08 03:47:04,454 INFO L878 garLoopResultBuilder]: At program point L16(line 16) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2022-04-08 03:47:04,454 INFO L878 garLoopResultBuilder]: At program point L15(lines 15 17) the Hoare annotation is: (and (or (not (<= 1 |__VERIFIER_assert_#in~cond|)) (<= 1 __VERIFIER_assert_~cond)) (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0)))) [2022-04-08 03:47:04,454 INFO L885 garLoopResultBuilder]: At program point __VERIFIER_assertENTRY(lines 14 19) the Hoare annotation is: true [2022-04-08 03:47:04,454 INFO L885 garLoopResultBuilder]: At program point L15-2(lines 14 19) the Hoare annotation is: true [2022-04-08 03:47:04,454 INFO L885 garLoopResultBuilder]: At program point __VERIFIER_assertEXIT(lines 14 19) the Hoare annotation is: true [2022-04-08 03:47:04,455 INFO L878 garLoopResultBuilder]: At program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 16) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2022-04-08 03:47:04,457 INFO L719 BasicCegarLoop]: Path program histogram: [6, 2, 2, 2] [2022-04-08 03:47:04,458 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-04-08 03:47:04,461 WARN L170 areAnnotationChecker]: reach_errorENTRY has no Hoare annotation [2022-04-08 03:47:04,461 WARN L170 areAnnotationChecker]: reach_errorENTRY has no Hoare annotation [2022-04-08 03:47:04,463 WARN L170 areAnnotationChecker]: L12-1 has no Hoare annotation [2022-04-08 03:47:04,470 INFO L163 areAnnotationChecker]: CFG has 30 edges. 30 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. 0 times interpolants missing. [2022-04-08 03:47:04,477 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.04 03:47:04 BoogieIcfgContainer [2022-04-08 03:47:04,478 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-04-08 03:47:04,479 INFO L158 Benchmark]: Toolchain (without parser) took 4044.40ms. Allocated memory was 197.1MB in the beginning and 248.5MB in the end (delta: 51.4MB). Free memory was 146.9MB in the beginning and 166.6MB in the end (delta: -19.7MB). Peak memory consumption was 31.3MB. Max. memory is 8.0GB. [2022-04-08 03:47:04,479 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 197.1MB. Free memory was 163.4MB in the beginning and 163.3MB in the end (delta: 146.9kB). There was no memory consumed. Max. memory is 8.0GB. [2022-04-08 03:47:04,479 INFO L158 Benchmark]: CACSL2BoogieTranslator took 183.29ms. Allocated memory is still 197.1MB. Free memory was 146.7MB in the beginning and 173.2MB in the end (delta: -26.5MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2022-04-08 03:47:04,479 INFO L158 Benchmark]: Boogie Preprocessor took 34.35ms. Allocated memory is still 197.1MB. Free memory was 173.2MB in the beginning and 171.8MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-04-08 03:47:04,480 INFO L158 Benchmark]: RCFGBuilder took 242.41ms. Allocated memory is still 197.1MB. Free memory was 171.8MB in the beginning and 160.6MB in the end (delta: 11.1MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2022-04-08 03:47:04,480 INFO L158 Benchmark]: TraceAbstraction took 3580.51ms. Allocated memory was 197.1MB in the beginning and 248.5MB in the end (delta: 51.4MB). Free memory was 160.2MB in the beginning and 166.6MB in the end (delta: -6.4MB). Peak memory consumption was 46.3MB. Max. memory is 8.0GB. [2022-04-08 03:47:04,481 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - AssertionsEnabledResult: Assertions are enabled Assertions are enabled - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 197.1MB. Free memory was 163.4MB in the beginning and 163.3MB in the end (delta: 146.9kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 183.29ms. Allocated memory is still 197.1MB. Free memory was 146.7MB in the beginning and 173.2MB in the end (delta: -26.5MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * Boogie Preprocessor took 34.35ms. Allocated memory is still 197.1MB. Free memory was 173.2MB in the beginning and 171.8MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 242.41ms. Allocated memory is still 197.1MB. Free memory was 171.8MB in the beginning and 160.6MB in the end (delta: 11.1MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * TraceAbstraction took 3580.51ms. Allocated memory was 197.1MB in the beginning and 248.5MB in the end (delta: 51.4MB). Free memory was 160.2MB in the beginning and 166.6MB in the end (delta: -6.4MB). Peak memory consumption was 46.3MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 16]: 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 5 procedures, 28 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 3.5s, OverallIterations: 6, TraceHistogramMax: 3, PathProgramHistogramMax: 6, EmptinessCheckTime: 0.0s, AutomataDifference: 1.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 135 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 134 mSDsluCounter, 190 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 95 mSDsCounter, 41 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 186 IncrementalHoareTripleChecker+Invalid, 227 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 41 mSolverCounterUnsat, 95 mSDtfsCounter, 186 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 149 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=28occurred in iteration=4, InterpolantAutomatonStates: 31, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 6 MinimizatonAttempts, 10 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 25 LocationsWithAnnotation, 55 PreInvPairs, 88 NumberOfFragments, 63 HoareAnnotationTreeSize, 55 FomulaSimplifications, 42 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 25 FomulaSimplificationsInter, 55 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 28]: Loop Invariant Derived loop invariant: i <= 1023 - InvariantResult [Line: 24]: Loop Invariant Derived loop invariant: 1 - ProcedureContractResult [Line: 20]: Procedure Contract for main Derived contract for procedure main: 1 - ProcedureContractResult [Line: 14]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert: 1 RESULT: Ultimate proved your program to be correct! [2022-04-08 03:47:04,507 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...