/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/acceleratedInterpolationQvasr_64.epf -i ../../../trunk/examples/svcomp/loops/while_infinite_loop_4.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-fb4f59a-m [2022-04-28 09:12:28,417 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-04-28 09:12:28,418 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-04-28 09:12:28,463 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-04-28 09:12:28,468 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-04-28 09:12:28,469 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-04-28 09:12:28,470 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-04-28 09:12:28,470 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-04-28 09:12:28,471 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-04-28 09:12:28,471 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-04-28 09:12:28,473 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-04-28 09:12:28,474 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-04-28 09:12:28,475 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-04-28 09:12:28,487 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-04-28 09:12:28,488 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-04-28 09:12:28,488 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-04-28 09:12:28,489 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-04-28 09:12:28,491 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-04-28 09:12:28,496 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-04-28 09:12:28,496 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-04-28 09:12:28,502 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-04-28 09:12:28,503 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationQvasr_64.epf [2022-04-28 09:12:28,515 INFO L113 SettingsManager]: Loading preferences was successful [2022-04-28 09:12:28,515 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-04-28 09:12:28,516 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-04-28 09:12:28,516 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-04-28 09:12:28,516 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-04-28 09:12:28,516 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-04-28 09:12:28,517 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-04-28 09:12:28,517 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-04-28 09:12:28,517 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-04-28 09:12:28,517 INFO L138 SettingsManager]: * Use constant arrays=true [2022-04-28 09:12:28,517 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-04-28 09:12:28,518 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-04-28 09:12:28,518 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-04-28 09:12:28,518 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-04-28 09:12:28,518 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-04-28 09:12:28,518 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-28 09:12:28,518 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-04-28 09:12:28,518 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2022-04-28 09:12:28,518 INFO L138 SettingsManager]: * Trace refinement strategy=ACCELERATED_INTERPOLATION [2022-04-28 09:12:28,518 INFO L138 SettingsManager]: * Trace refinement strategy used in Accelerated Interpolation=CAMEL [2022-04-28 09:12:28,518 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-04-28 09:12:28,518 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=QVASR [2022-04-28 09:12:28,518 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-04-28 09:12:28,712 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-04-28 09:12:28,730 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-04-28 09:12:28,732 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-04-28 09:12:28,733 INFO L271 PluginConnector]: Initializing CDTParser... [2022-04-28 09:12:28,734 INFO L275 PluginConnector]: CDTParser initialized [2022-04-28 09:12:28,735 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/while_infinite_loop_4.c [2022-04-28 09:12:28,780 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/17c34564f/6ed826b4a8cc48cdb21bfe9cf7aeced2/FLAGb5ba1abc2 [2022-04-28 09:12:29,063 INFO L306 CDTParser]: Found 1 translation units. [2022-04-28 09:12:29,063 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/while_infinite_loop_4.c [2022-04-28 09:12:29,067 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/17c34564f/6ed826b4a8cc48cdb21bfe9cf7aeced2/FLAGb5ba1abc2 [2022-04-28 09:12:29,508 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/17c34564f/6ed826b4a8cc48cdb21bfe9cf7aeced2 [2022-04-28 09:12:29,510 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-04-28 09:12:29,510 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-04-28 09:12:29,511 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-04-28 09:12:29,512 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-04-28 09:12:29,513 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-04-28 09:12:29,514 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.04 09:12:29" (1/1) ... [2022-04-28 09:12:29,515 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a8edcde and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 09:12:29, skipping insertion in model container [2022-04-28 09:12:29,515 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.04 09:12:29" (1/1) ... [2022-04-28 09:12:29,519 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-04-28 09:12:29,528 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-04-28 09:12:29,652 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops/while_infinite_loop_4.c[333,346] [2022-04-28 09:12:29,660 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-28 09:12:29,700 INFO L203 MainTranslator]: Completed pre-run [2022-04-28 09:12:29,717 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops/while_infinite_loop_4.c[333,346] [2022-04-28 09:12:29,719 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-28 09:12:29,730 INFO L208 MainTranslator]: Completed translation [2022-04-28 09:12:29,731 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 09:12:29 WrapperNode [2022-04-28 09:12:29,731 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-04-28 09:12:29,732 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-04-28 09:12:29,732 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-04-28 09:12:29,733 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-04-28 09:12:29,740 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 09:12:29" (1/1) ... [2022-04-28 09:12:29,740 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 09:12:29" (1/1) ... [2022-04-28 09:12:29,744 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 09:12:29" (1/1) ... [2022-04-28 09:12:29,744 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 09:12:29" (1/1) ... [2022-04-28 09:12:29,749 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 09:12:29" (1/1) ... [2022-04-28 09:12:29,752 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 09:12:29" (1/1) ... [2022-04-28 09:12:29,756 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 09:12:29" (1/1) ... [2022-04-28 09:12:29,758 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-04-28 09:12:29,759 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-04-28 09:12:29,760 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-04-28 09:12:29,760 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-04-28 09:12:29,761 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 09:12:29" (1/1) ... [2022-04-28 09:12:29,766 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-28 09:12:29,785 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-28 09:12:29,794 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-04-28 09:12:29,817 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-04-28 09:12:29,828 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-04-28 09:12:29,829 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-04-28 09:12:29,829 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-04-28 09:12:29,829 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-04-28 09:12:29,829 INFO L138 BoogieDeclarations]: Found implementation of procedure eval [2022-04-28 09:12:29,829 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-04-28 09:12:29,830 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-04-28 09:12:29,830 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-04-28 09:12:29,830 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-04-28 09:12:29,830 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-04-28 09:12:29,830 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-04-28 09:12:29,830 INFO L130 BoogieDeclarations]: Found specification of procedure eval [2022-04-28 09:12:29,830 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-04-28 09:12:29,830 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-04-28 09:12:29,831 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-04-28 09:12:29,832 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-04-28 09:12:29,832 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-04-28 09:12:29,832 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-04-28 09:12:29,832 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-04-28 09:12:29,878 INFO L234 CfgBuilder]: Building ICFG [2022-04-28 09:12:29,879 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-04-28 09:12:29,942 INFO L275 CfgBuilder]: Performing block encoding [2022-04-28 09:12:29,946 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-04-28 09:12:29,946 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-04-28 09:12:29,948 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.04 09:12:29 BoogieIcfgContainer [2022-04-28 09:12:29,948 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-04-28 09:12:29,949 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-04-28 09:12:29,949 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-04-28 09:12:29,951 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-04-28 09:12:29,951 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.04 09:12:29" (1/3) ... [2022-04-28 09:12:29,952 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ba8cb95 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.04 09:12:29, skipping insertion in model container [2022-04-28 09:12:29,952 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 09:12:29" (2/3) ... [2022-04-28 09:12:29,952 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ba8cb95 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.04 09:12:29, skipping insertion in model container [2022-04-28 09:12:29,952 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.04 09:12:29" (3/3) ... [2022-04-28 09:12:29,953 INFO L111 eAbstractionObserver]: Analyzing ICFG while_infinite_loop_4.c [2022-04-28 09:12:29,962 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-04-28 09:12:29,962 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-04-28 09:12:29,990 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-28 09:12:29,995 INFO L357 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, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@13430517, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@8e9d9c5 [2022-04-28 09:12:29,995 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-04-28 09:12:30,000 INFO L276 IsEmpty]: Start isEmpty. Operand has 23 states, 12 states have (on average 1.5) internal successors, (18), 14 states have internal predecessors, (18), 5 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-04-28 09:12:30,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-04-28 09:12:30,005 INFO L187 NwaCegarLoop]: Found error trace [2022-04-28 09:12:30,005 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-28 09:12:30,006 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-28 09:12:30,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-28 09:12:30,009 INFO L85 PathProgramCache]: Analyzing trace with hash -1499484955, now seen corresponding path program 1 times [2022-04-28 09:12:30,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-28 09:12:30,028 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [917263493] [2022-04-28 09:12:30,035 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-28 09:12:30,036 INFO L85 PathProgramCache]: Analyzing trace with hash -1499484955, now seen corresponding path program 2 times [2022-04-28 09:12:30,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-28 09:12:30,038 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79048074] [2022-04-28 09:12:30,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-28 09:12:30,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-28 09:12:30,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-28 09:12:30,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-28 09:12:30,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-28 09:12:30,168 INFO L290 TraceCheckUtils]: 0: Hoare triple {31#(and (= ~x~0 |old(~x~0)|) (= |#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(24, 2);call #Ultimate.allocInit(12, 3);~x~0 := 0; {26#true} is VALID [2022-04-28 09:12:30,168 INFO L290 TraceCheckUtils]: 1: Hoare triple {26#true} assume true; {26#true} is VALID [2022-04-28 09:12:30,169 INFO L284 TraceCheckUtils]: 2: Hoare quadruple {26#true} {26#true} #53#return; {26#true} is VALID [2022-04-28 09:12:30,171 INFO L272 TraceCheckUtils]: 0: Hoare triple {26#true} call ULTIMATE.init(); {31#(and (= ~x~0 |old(~x~0)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} is VALID [2022-04-28 09:12:30,171 INFO L290 TraceCheckUtils]: 1: Hoare triple {31#(and (= ~x~0 |old(~x~0)|) (= |#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(24, 2);call #Ultimate.allocInit(12, 3);~x~0 := 0; {26#true} is VALID [2022-04-28 09:12:30,171 INFO L290 TraceCheckUtils]: 2: Hoare triple {26#true} assume true; {26#true} is VALID [2022-04-28 09:12:30,172 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {26#true} {26#true} #53#return; {26#true} is VALID [2022-04-28 09:12:30,172 INFO L272 TraceCheckUtils]: 4: Hoare triple {26#true} call #t~ret4 := main(); {26#true} is VALID [2022-04-28 09:12:30,173 INFO L290 TraceCheckUtils]: 5: Hoare triple {26#true} assume false; {27#false} is VALID [2022-04-28 09:12:30,174 INFO L272 TraceCheckUtils]: 6: Hoare triple {27#false} call __VERIFIER_assert((if 0 == ~x~0 then 1 else 0)); {27#false} is VALID [2022-04-28 09:12:30,174 INFO L290 TraceCheckUtils]: 7: Hoare triple {27#false} ~cond := #in~cond; {27#false} is VALID [2022-04-28 09:12:30,174 INFO L290 TraceCheckUtils]: 8: Hoare triple {27#false} assume 0 == ~cond; {27#false} is VALID [2022-04-28 09:12:30,174 INFO L290 TraceCheckUtils]: 9: Hoare triple {27#false} assume !false; {27#false} is VALID [2022-04-28 09:12:30,174 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-28 09:12:30,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-28 09:12:30,176 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [79048074] [2022-04-28 09:12:30,177 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [79048074] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-28 09:12:30,177 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-28 09:12:30,177 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-04-28 09:12:30,180 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-28 09:12:30,181 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [917263493] [2022-04-28 09:12:30,181 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [917263493] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-28 09:12:30,181 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-28 09:12:30,181 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-04-28 09:12:30,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554610007] [2022-04-28 09:12:30,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-28 09:12:30,187 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 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 10 [2022-04-28 09:12:30,188 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-28 09:12:30,190 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 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) [2022-04-28 09:12:30,218 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 10 edges. 10 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-28 09:12:30,218 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-28 09:12:30,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-28 09:12:30,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-28 09:12:30,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-28 09:12:30,242 INFO L87 Difference]: Start difference. First operand has 23 states, 12 states have (on average 1.5) internal successors, (18), 14 states have internal predecessors, (18), 5 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 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) [2022-04-28 09:12:30,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 09:12:30,342 INFO L93 Difference]: Finished difference Result 37 states and 53 transitions. [2022-04-28 09:12:30,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-28 09:12:30,343 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 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 10 [2022-04-28 09:12:30,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-28 09:12:30,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 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) [2022-04-28 09:12:30,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 53 transitions. [2022-04-28 09:12:30,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 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) [2022-04-28 09:12:30,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 53 transitions. [2022-04-28 09:12:30,359 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 3 states and 53 transitions. [2022-04-28 09:12:30,418 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 53 edges. 53 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-28 09:12:30,426 INFO L225 Difference]: With dead ends: 37 [2022-04-28 09:12:30,426 INFO L226 Difference]: Without dead ends: 19 [2022-04-28 09:12:30,429 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-28 09:12:30,432 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 6 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-28 09:12:30,433 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 20 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-28 09:12:30,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2022-04-28 09:12:30,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 17. [2022-04-28 09:12:30,465 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-28 09:12:30,465 INFO L82 GeneralOperation]: Start isEquivalent. First operand 19 states. Second operand has 17 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 10 states have internal predecessors, (10), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-04-28 09:12:30,466 INFO L74 IsIncluded]: Start isIncluded. First operand 19 states. Second operand has 17 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 10 states have internal predecessors, (10), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-04-28 09:12:30,466 INFO L87 Difference]: Start difference. First operand 19 states. Second operand has 17 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 10 states have internal predecessors, (10), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-04-28 09:12:30,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 09:12:30,472 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2022-04-28 09:12:30,472 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 20 transitions. [2022-04-28 09:12:30,472 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-28 09:12:30,473 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-28 09:12:30,473 INFO L74 IsIncluded]: Start isIncluded. First operand has 17 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 10 states have internal predecessors, (10), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand 19 states. [2022-04-28 09:12:30,474 INFO L87 Difference]: Start difference. First operand has 17 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 10 states have internal predecessors, (10), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand 19 states. [2022-04-28 09:12:30,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 09:12:30,476 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2022-04-28 09:12:30,476 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 20 transitions. [2022-04-28 09:12:30,477 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-28 09:12:30,477 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-28 09:12:30,477 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-28 09:12:30,477 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-28 09:12:30,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 10 states have internal predecessors, (10), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-04-28 09:12:30,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2022-04-28 09:12:30,483 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 10 [2022-04-28 09:12:30,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-28 09:12:30,483 INFO L495 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2022-04-28 09:12:30,484 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 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) [2022-04-28 09:12:30,484 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 17 states and 17 transitions. [2022-04-28 09:12:30,500 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 17 edges. 17 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-28 09:12:30,500 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2022-04-28 09:12:30,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-04-28 09:12:30,502 INFO L187 NwaCegarLoop]: Found error trace [2022-04-28 09:12:30,502 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-28 09:12:30,502 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-04-28 09:12:30,503 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-28 09:12:30,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-28 09:12:30,503 INFO L85 PathProgramCache]: Analyzing trace with hash -1713498874, now seen corresponding path program 1 times [2022-04-28 09:12:30,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-28 09:12:30,504 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1652551854] [2022-04-28 09:12:30,504 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-28 09:12:30,505 INFO L85 PathProgramCache]: Analyzing trace with hash -1713498874, now seen corresponding path program 2 times [2022-04-28 09:12:30,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-28 09:12:30,505 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [69003002] [2022-04-28 09:12:30,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-28 09:12:30,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-28 09:12:30,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-28 09:12:30,522 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-04-28 09:12:30,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-28 09:12:30,541 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-04-28 09:12:30,541 INFO L130 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found a feasible trace [2022-04-28 09:12:30,541 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-04-28 09:12:30,543 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-04-28 09:12:30,544 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-04-28 09:12:30,546 INFO L356 BasicCegarLoop]: Path program histogram: [2, 2] [2022-04-28 09:12:30,549 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-04-28 09:12:30,554 WARN L170 areAnnotationChecker]: reach_errorENTRY has no Hoare annotation [2022-04-28 09:12:30,555 WARN L170 areAnnotationChecker]: ULTIMATE.initENTRY has no Hoare annotation [2022-04-28 09:12:30,555 WARN L170 areAnnotationChecker]: evalENTRY has no Hoare annotation [2022-04-28 09:12:30,555 WARN L170 areAnnotationChecker]: evalENTRY has no Hoare annotation [2022-04-28 09:12:30,555 WARN L170 areAnnotationChecker]: evalENTRY has no Hoare annotation [2022-04-28 09:12:30,555 WARN L170 areAnnotationChecker]: ULTIMATE.startENTRY has no Hoare annotation [2022-04-28 09:12:30,555 WARN L170 areAnnotationChecker]: ULTIMATE.startENTRY has no Hoare annotation [2022-04-28 09:12:30,555 WARN L170 areAnnotationChecker]: L29 has no Hoare annotation [2022-04-28 09:12:30,555 WARN L170 areAnnotationChecker]: L29 has no Hoare annotation [2022-04-28 09:12:30,555 WARN L170 areAnnotationChecker]: L29 has no Hoare annotation [2022-04-28 09:12:30,555 WARN L170 areAnnotationChecker]: __VERIFIER_assertENTRY has no Hoare annotation [2022-04-28 09:12:30,555 WARN L170 areAnnotationChecker]: reach_errorFINAL has no Hoare annotation [2022-04-28 09:12:30,555 WARN L170 areAnnotationChecker]: ULTIMATE.initFINAL has no Hoare annotation [2022-04-28 09:12:30,555 WARN L170 areAnnotationChecker]: L16-1 has no Hoare annotation [2022-04-28 09:12:30,556 WARN L170 areAnnotationChecker]: L-1 has no Hoare annotation [2022-04-28 09:12:30,556 WARN L170 areAnnotationChecker]: L-1 has no Hoare annotation [2022-04-28 09:12:30,556 WARN L170 areAnnotationChecker]: L26-1 has no Hoare annotation [2022-04-28 09:12:30,556 WARN L170 areAnnotationChecker]: L26-1 has no Hoare annotation [2022-04-28 09:12:30,556 WARN L170 areAnnotationChecker]: L28 has no Hoare annotation [2022-04-28 09:12:30,556 WARN L170 areAnnotationChecker]: L28 has no Hoare annotation [2022-04-28 09:12:30,556 WARN L170 areAnnotationChecker]: L6 has no Hoare annotation [2022-04-28 09:12:30,556 WARN L170 areAnnotationChecker]: L6 has no Hoare annotation [2022-04-28 09:12:30,556 WARN L170 areAnnotationChecker]: ULTIMATE.initEXIT has no Hoare annotation [2022-04-28 09:12:30,556 WARN L170 areAnnotationChecker]: evalEXIT has no Hoare annotation [2022-04-28 09:12:30,556 WARN L170 areAnnotationChecker]: ULTIMATE.startFINAL has no Hoare annotation [2022-04-28 09:12:30,556 WARN L170 areAnnotationChecker]: L32 has no Hoare annotation [2022-04-28 09:12:30,556 WARN L170 areAnnotationChecker]: L28-1 has no Hoare annotation [2022-04-28 09:12:30,556 WARN L170 areAnnotationChecker]: L28-1 has no Hoare annotation [2022-04-28 09:12:30,557 WARN L170 areAnnotationChecker]: L7 has no Hoare annotation [2022-04-28 09:12:30,557 WARN L170 areAnnotationChecker]: L7 has no Hoare annotation [2022-04-28 09:12:30,557 WARN L170 areAnnotationChecker]: L6-2 has no Hoare annotation [2022-04-28 09:12:30,557 WARN L170 areAnnotationChecker]: mainFINAL has no Hoare annotation [2022-04-28 09:12:30,557 WARN L170 areAnnotationChecker]: __VERIFIER_assertEXIT has no Hoare annotation [2022-04-28 09:12:30,557 WARN L170 areAnnotationChecker]: __VERIFIER_assertEXIT has no Hoare annotation [2022-04-28 09:12:30,557 WARN L170 areAnnotationChecker]: mainEXIT has no Hoare annotation [2022-04-28 09:12:30,557 INFO L163 areAnnotationChecker]: CFG has 0 edges. 0 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. 0 times interpolants missing. [2022-04-28 09:12:30,558 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.04 09:12:30 BoogieIcfgContainer [2022-04-28 09:12:30,558 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-04-28 09:12:30,559 INFO L158 Benchmark]: Toolchain (without parser) took 1048.22ms. Allocated memory was 180.4MB in the beginning and 260.0MB in the end (delta: 79.7MB). Free memory was 126.3MB in the beginning and 180.9MB in the end (delta: -54.6MB). Peak memory consumption was 25.6MB. Max. memory is 8.0GB. [2022-04-28 09:12:30,559 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 180.4MB. Free memory is still 142.2MB. There was no memory consumed. Max. memory is 8.0GB. [2022-04-28 09:12:30,560 INFO L158 Benchmark]: CACSL2BoogieTranslator took 219.98ms. Allocated memory was 180.4MB in the beginning and 260.0MB in the end (delta: 79.7MB). Free memory was 126.1MB in the beginning and 233.9MB in the end (delta: -107.8MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. [2022-04-28 09:12:30,560 INFO L158 Benchmark]: Boogie Preprocessor took 25.92ms. Allocated memory is still 260.0MB. Free memory was 233.9MB in the beginning and 232.8MB in the end (delta: 1.1MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-04-28 09:12:30,560 INFO L158 Benchmark]: RCFGBuilder took 188.57ms. Allocated memory is still 260.0MB. Free memory was 232.8MB in the beginning and 222.3MB in the end (delta: 10.4MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2022-04-28 09:12:30,561 INFO L158 Benchmark]: TraceAbstraction took 609.05ms. Allocated memory is still 260.0MB. Free memory was 221.8MB in the beginning and 180.9MB in the end (delta: 40.9MB). Peak memory consumption was 40.9MB. Max. memory is 8.0GB. [2022-04-28 09:12:30,562 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - AssertionsEnabledResult: Assertions are enabled Assertions are enabled - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 180.4MB. Free memory is still 142.2MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 219.98ms. Allocated memory was 180.4MB in the beginning and 260.0MB in the end (delta: 79.7MB). Free memory was 126.1MB in the beginning and 233.9MB in the end (delta: -107.8MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. * Boogie Preprocessor took 25.92ms. Allocated memory is still 260.0MB. Free memory was 233.9MB in the beginning and 232.8MB in the end (delta: 1.1MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 188.57ms. Allocated memory is still 260.0MB. Free memory was 232.8MB in the beginning and 222.3MB in the end (delta: 10.4MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * TraceAbstraction took 609.05ms. Allocated memory is still 260.0MB. Free memory was 221.8MB in the beginning and 180.9MB in the end (delta: 40.9MB). Peak memory consumption was 40.9MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 7]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L12] int x=0; [L26] COND TRUE 1 [L28] CALL eval() [L16] COND TRUE 1 [L17] x=1 [L28] RET eval() [L29] CALL __VERIFIER_assert(x==0) [L6] COND TRUE !(cond) [L7] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 26 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.6s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 6 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 6 mSDsluCounter, 20 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2 mSDsCounter, 4 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 7 IncrementalHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 4 mSolverCounterUnsat, 18 mSDtfsCounter, 7 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=23occurred in iteration=0, InterpolantAutomatonStates: 3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, 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 RESULT: Ultimate proved your program to be incorrect! [2022-04-28 09:12:30,588 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...