/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/loops/nec11.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-e106359-m [2022-04-15 05:42:15,990 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-04-15 05:42:15,991 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-04-15 05:42:16,026 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-04-15 05:42:16,035 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-04-15 05:42:16,036 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-04-15 05:42:16,036 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-04-15 05:42:16,037 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-04-15 05:42:16,038 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-04-15 05:42:16,038 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-04-15 05:42:16,039 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-04-15 05:42:16,040 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-04-15 05:42:16,041 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-04-15 05:42:16,045 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-04-15 05:42:16,047 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-04-15 05:42:16,049 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-04-15 05:42:16,051 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-04-15 05:42:16,055 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-04-15 05:42:16,059 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-04-15 05:42:16,060 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-04-15 05:42:16,066 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-04-15 05:42:16,066 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf [2022-04-15 05:42:16,075 INFO L113 SettingsManager]: Loading preferences was successful [2022-04-15 05:42:16,076 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-04-15 05:42:16,076 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-04-15 05:42:16,076 INFO L138 SettingsManager]: * sizeof long=4 [2022-04-15 05:42:16,076 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-04-15 05:42:16,077 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-04-15 05:42:16,077 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-04-15 05:42:16,077 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-04-15 05:42:16,077 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-04-15 05:42:16,077 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-04-15 05:42:16,077 INFO L138 SettingsManager]: * sizeof long double=12 [2022-04-15 05:42:16,078 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-04-15 05:42:16,078 INFO L138 SettingsManager]: * Use constant arrays=true [2022-04-15 05:42:16,078 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-04-15 05:42:16,078 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-04-15 05:42:16,078 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-04-15 05:42:16,078 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-04-15 05:42:16,078 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-04-15 05:42:16,078 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-15 05:42:16,078 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-04-15 05:42:16,078 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2022-04-15 05:42:16,079 INFO L138 SettingsManager]: * Trace refinement strategy=ACCELERATED_INTERPOLATION [2022-04-15 05:42:16,079 INFO L138 SettingsManager]: * Trace refinement strategy used in Accelerated Interpolation=CAMEL [2022-04-15 05:42:16,079 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-04-15 05:42:16,079 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=JORDAN [2022-04-15 05:42:16,079 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-04-15 05:42:16,252 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-04-15 05:42:16,275 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-04-15 05:42:16,277 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-04-15 05:42:16,277 INFO L271 PluginConnector]: Initializing CDTParser... [2022-04-15 05:42:16,278 INFO L275 PluginConnector]: CDTParser initialized [2022-04-15 05:42:16,279 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/nec11.c [2022-04-15 05:42:16,363 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c7e774351/c3af64257ca4407b92758ac92e86178b/FLAGc4e9154fe [2022-04-15 05:42:16,754 INFO L306 CDTParser]: Found 1 translation units. [2022-04-15 05:42:16,757 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/nec11.c [2022-04-15 05:42:16,761 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c7e774351/c3af64257ca4407b92758ac92e86178b/FLAGc4e9154fe [2022-04-15 05:42:16,768 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c7e774351/c3af64257ca4407b92758ac92e86178b [2022-04-15 05:42:16,770 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-04-15 05:42:16,771 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-04-15 05:42:16,773 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-04-15 05:42:16,773 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-04-15 05:42:16,775 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-04-15 05:42:16,776 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.04 05:42:16" (1/1) ... [2022-04-15 05:42:16,776 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@32139444 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 05:42:16, skipping insertion in model container [2022-04-15 05:42:16,776 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.04 05:42:16" (1/1) ... [2022-04-15 05:42:16,780 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-04-15 05:42:16,787 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-04-15 05:42:16,937 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/nec11.c[317,330] [2022-04-15 05:42:16,948 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-15 05:42:16,961 INFO L203 MainTranslator]: Completed pre-run [2022-04-15 05:42:16,968 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/nec11.c[317,330] [2022-04-15 05:42:16,970 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-15 05:42:16,977 INFO L208 MainTranslator]: Completed translation [2022-04-15 05:42:16,978 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 05:42:16 WrapperNode [2022-04-15 05:42:16,978 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-04-15 05:42:16,978 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-04-15 05:42:16,978 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-04-15 05:42:16,978 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-04-15 05:42:16,986 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 05:42:16" (1/1) ... [2022-04-15 05:42:16,986 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 05:42:16" (1/1) ... [2022-04-15 05:42:16,992 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 05:42:16" (1/1) ... [2022-04-15 05:42:16,993 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 05:42:16" (1/1) ... [2022-04-15 05:42:16,997 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 05:42:16" (1/1) ... [2022-04-15 05:42:17,000 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 05:42:16" (1/1) ... [2022-04-15 05:42:17,003 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 05:42:16" (1/1) ... [2022-04-15 05:42:17,004 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-04-15 05:42:17,006 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-04-15 05:42:17,006 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-04-15 05:42:17,006 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-04-15 05:42:17,007 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 05:42:16" (1/1) ... [2022-04-15 05:42:17,014 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-15 05:42:17,020 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-15 05:42:17,042 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) [2022-04-15 05:42:17,057 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 [2022-04-15 05:42:17,082 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-04-15 05:42:17,082 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-04-15 05:42:17,082 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-04-15 05:42:17,082 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-04-15 05:42:17,082 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-04-15 05:42:17,082 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-04-15 05:42:17,083 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-04-15 05:42:17,083 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-04-15 05:42:17,083 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-04-15 05:42:17,083 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-04-15 05:42:17,083 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2022-04-15 05:42:17,084 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-04-15 05:42:17,084 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-04-15 05:42:17,084 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-04-15 05:42:17,084 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-04-15 05:42:17,085 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-04-15 05:42:17,085 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-04-15 05:42:17,085 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-04-15 05:42:17,127 INFO L234 CfgBuilder]: Building ICFG [2022-04-15 05:42:17,128 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-04-15 05:42:17,235 INFO L275 CfgBuilder]: Performing block encoding [2022-04-15 05:42:17,239 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-04-15 05:42:17,239 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-04-15 05:42:17,240 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.04 05:42:17 BoogieIcfgContainer [2022-04-15 05:42:17,240 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-04-15 05:42:17,241 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-04-15 05:42:17,241 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-04-15 05:42:17,243 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-04-15 05:42:17,244 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.04 05:42:16" (1/3) ... [2022-04-15 05:42:17,244 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c1bb466 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.04 05:42:17, skipping insertion in model container [2022-04-15 05:42:17,244 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 05:42:16" (2/3) ... [2022-04-15 05:42:17,244 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c1bb466 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.04 05:42:17, skipping insertion in model container [2022-04-15 05:42:17,244 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.04 05:42:17" (3/3) ... [2022-04-15 05:42:17,245 INFO L111 eAbstractionObserver]: Analyzing ICFG nec11.c [2022-04-15 05:42:17,248 INFO L202 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-04-15 05:42:17,248 INFO L161 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-04-15 05:42:17,277 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-15 05:42:17,286 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 [2022-04-15 05:42:17,286 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-04-15 05:42:17,305 INFO L276 IsEmpty]: Start isEmpty. Operand has 21 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 14 states have internal predecessors, (18), 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) [2022-04-15 05:42:17,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-04-15 05:42:17,309 INFO L491 BasicCegarLoop]: Found error trace [2022-04-15 05:42:17,310 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-15 05:42:17,310 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-15 05:42:17,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-15 05:42:17,314 INFO L85 PathProgramCache]: Analyzing trace with hash 536722933, now seen corresponding path program 1 times [2022-04-15 05:42:17,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-15 05:42:17,325 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1671738066] [2022-04-15 05:42:17,332 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-15 05:42:17,332 INFO L85 PathProgramCache]: Analyzing trace with hash 536722933, now seen corresponding path program 2 times [2022-04-15 05:42:17,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-15 05:42:17,334 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1358657737] [2022-04-15 05:42:17,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-15 05:42:17,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-15 05:42:17,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-15 05:42:17,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-15 05:42:17,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-15 05:42:17,486 INFO L290 TraceCheckUtils]: 0: Hoare triple {29#(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(8, 2);call #Ultimate.allocInit(12, 3); {24#true} is VALID [2022-04-15 05:42:17,486 INFO L290 TraceCheckUtils]: 1: Hoare triple {24#true} assume true; {24#true} is VALID [2022-04-15 05:42:17,487 INFO L284 TraceCheckUtils]: 2: Hoare quadruple {24#true} {24#true} #44#return; {24#true} is VALID [2022-04-15 05:42:17,488 INFO L272 TraceCheckUtils]: 0: Hoare triple {24#true} call ULTIMATE.init(); {29#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} is VALID [2022-04-15 05:42:17,488 INFO L290 TraceCheckUtils]: 1: Hoare triple {29#(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(8, 2);call #Ultimate.allocInit(12, 3); {24#true} is VALID [2022-04-15 05:42:17,488 INFO L290 TraceCheckUtils]: 2: Hoare triple {24#true} assume true; {24#true} is VALID [2022-04-15 05:42:17,489 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {24#true} {24#true} #44#return; {24#true} is VALID [2022-04-15 05:42:17,489 INFO L272 TraceCheckUtils]: 4: Hoare triple {24#true} call #t~ret6 := main(); {24#true} is VALID [2022-04-15 05:42:17,489 INFO L290 TraceCheckUtils]: 5: Hoare triple {24#true} havoc ~a~0;~len~0 := 0;~c~0 := #t~nondet4;havoc #t~nondet4;havoc ~i~0; {24#true} is VALID [2022-04-15 05:42:17,490 INFO L290 TraceCheckUtils]: 6: Hoare triple {24#true} assume !true; {25#false} is VALID [2022-04-15 05:42:17,490 INFO L272 TraceCheckUtils]: 7: Hoare triple {25#false} call __VERIFIER_assert((if 5 == ~len~0 then 1 else 0)); {25#false} is VALID [2022-04-15 05:42:17,490 INFO L290 TraceCheckUtils]: 8: Hoare triple {25#false} ~cond := #in~cond; {25#false} is VALID [2022-04-15 05:42:17,490 INFO L290 TraceCheckUtils]: 9: Hoare triple {25#false} assume 0 == ~cond; {25#false} is VALID [2022-04-15 05:42:17,491 INFO L290 TraceCheckUtils]: 10: Hoare triple {25#false} assume !false; {25#false} is VALID [2022-04-15 05:42:17,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-15 05:42:17,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-15 05:42:17,492 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1358657737] [2022-04-15 05:42:17,492 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1358657737] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-15 05:42:17,492 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-15 05:42:17,492 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-04-15 05:42:17,494 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-15 05:42:17,494 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1671738066] [2022-04-15 05:42:17,494 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1671738066] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-15 05:42:17,495 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-15 05:42:17,495 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-04-15 05:42:17,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148610217] [2022-04-15 05:42:17,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-15 05:42:17,498 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 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 11 [2022-04-15 05:42:17,499 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-15 05:42:17,501 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 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) [2022-04-15 05:42:17,523 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 11 edges. 11 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-15 05:42:17,523 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-15 05:42:17,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-15 05:42:17,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-15 05:42:17,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-15 05:42:17,544 INFO L87 Difference]: Start difference. First operand has 21 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 14 states have internal predecessors, (18), 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 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 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) [2022-04-15 05:42:17,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-15 05:42:17,618 INFO L93 Difference]: Finished difference Result 33 states and 37 transitions. [2022-04-15 05:42:17,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-15 05:42:17,618 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 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 11 [2022-04-15 05:42:17,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-15 05:42:17,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 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) [2022-04-15 05:42:17,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 37 transitions. [2022-04-15 05:42:17,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 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) [2022-04-15 05:42:17,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 37 transitions. [2022-04-15 05:42:17,631 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 3 states and 37 transitions. [2022-04-15 05:42:17,674 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 37 edges. 37 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-15 05:42:17,680 INFO L225 Difference]: With dead ends: 33 [2022-04-15 05:42:17,680 INFO L226 Difference]: Without dead ends: 14 [2022-04-15 05:42:17,682 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 [2022-04-15 05:42:17,685 INFO L913 BasicCegarLoop]: 21 mSDtfsCounter, 13 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 24 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 [2022-04-15 05:42:17,686 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [14 Valid, 24 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-15 05:42:17,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2022-04-15 05:42:17,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2022-04-15 05:42:17,708 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-15 05:42:17,709 INFO L82 GeneralOperation]: Start isEquivalent. First operand 14 states. Second operand has 14 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 9 states have internal predecessors, (11), 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) [2022-04-15 05:42:17,710 INFO L74 IsIncluded]: Start isIncluded. First operand 14 states. Second operand has 14 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 9 states have internal predecessors, (11), 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) [2022-04-15 05:42:17,710 INFO L87 Difference]: Start difference. First operand 14 states. Second operand has 14 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 9 states have internal predecessors, (11), 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) [2022-04-15 05:42:17,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-15 05:42:17,715 INFO L93 Difference]: Finished difference Result 14 states and 15 transitions. [2022-04-15 05:42:17,715 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2022-04-15 05:42:17,715 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-15 05:42:17,715 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-15 05:42:17,716 INFO L74 IsIncluded]: Start isIncluded. First operand has 14 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 9 states have internal predecessors, (11), 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 14 states. [2022-04-15 05:42:17,716 INFO L87 Difference]: Start difference. First operand has 14 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 9 states have internal predecessors, (11), 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 14 states. [2022-04-15 05:42:17,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-15 05:42:17,719 INFO L93 Difference]: Finished difference Result 14 states and 15 transitions. [2022-04-15 05:42:17,719 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2022-04-15 05:42:17,720 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-15 05:42:17,720 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-15 05:42:17,720 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-15 05:42:17,720 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-15 05:42:17,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 9 states have internal predecessors, (11), 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) [2022-04-15 05:42:17,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2022-04-15 05:42:17,722 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 11 [2022-04-15 05:42:17,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-15 05:42:17,722 INFO L478 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions. [2022-04-15 05:42:17,723 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 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) [2022-04-15 05:42:17,723 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 14 states and 15 transitions. [2022-04-15 05:42:17,740 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 15 edges. 15 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-15 05:42:17,741 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2022-04-15 05:42:17,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-04-15 05:42:17,744 INFO L491 BasicCegarLoop]: Found error trace [2022-04-15 05:42:17,749 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-15 05:42:17,749 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-04-15 05:42:17,749 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-15 05:42:17,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-15 05:42:17,750 INFO L85 PathProgramCache]: Analyzing trace with hash 526564202, now seen corresponding path program 1 times [2022-04-15 05:42:17,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-15 05:42:17,750 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1509644873] [2022-04-15 05:42:17,751 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-15 05:42:17,751 INFO L85 PathProgramCache]: Analyzing trace with hash 526564202, now seen corresponding path program 2 times [2022-04-15 05:42:17,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-15 05:42:17,751 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [798567229] [2022-04-15 05:42:17,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-15 05:42:17,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-15 05:42:17,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-15 05:42:17,768 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-04-15 05:42:17,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-15 05:42:17,815 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-04-15 05:42:17,818 INFO L130 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found a feasible trace [2022-04-15 05:42:17,818 INFO L618 BasicCegarLoop]: Counterexample is feasible [2022-04-15 05:42:17,821 INFO L788 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-04-15 05:42:17,822 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-04-15 05:42:17,824 INFO L719 BasicCegarLoop]: Path program histogram: [2, 2] [2022-04-15 05:42:17,827 INFO L177 ceAbstractionStarter]: Computing trace abstraction results [2022-04-15 05:42:17,835 WARN L170 areAnnotationChecker]: reach_errorENTRY has no Hoare annotation [2022-04-15 05:42:17,835 WARN L170 areAnnotationChecker]: ULTIMATE.initENTRY has no Hoare annotation [2022-04-15 05:42:17,835 WARN L170 areAnnotationChecker]: ULTIMATE.startENTRY has no Hoare annotation [2022-04-15 05:42:17,835 WARN L170 areAnnotationChecker]: ULTIMATE.startENTRY has no Hoare annotation [2022-04-15 05:42:17,835 WARN L170 areAnnotationChecker]: mainENTRY has no Hoare annotation [2022-04-15 05:42:17,835 WARN L170 areAnnotationChecker]: __VERIFIER_assertENTRY has no Hoare annotation [2022-04-15 05:42:17,835 WARN L170 areAnnotationChecker]: reach_errorFINAL has no Hoare annotation [2022-04-15 05:42:17,836 WARN L170 areAnnotationChecker]: ULTIMATE.initFINAL has no Hoare annotation [2022-04-15 05:42:17,836 WARN L170 areAnnotationChecker]: L-1 has no Hoare annotation [2022-04-15 05:42:17,836 WARN L170 areAnnotationChecker]: L-1 has no Hoare annotation [2022-04-15 05:42:17,836 WARN L170 areAnnotationChecker]: L21-2 has no Hoare annotation [2022-04-15 05:42:17,836 WARN L170 areAnnotationChecker]: L21-2 has no Hoare annotation [2022-04-15 05:42:17,836 WARN L170 areAnnotationChecker]: L21-2 has no Hoare annotation [2022-04-15 05:42:17,836 WARN L170 areAnnotationChecker]: L6 has no Hoare annotation [2022-04-15 05:42:17,836 WARN L170 areAnnotationChecker]: L6 has no Hoare annotation [2022-04-15 05:42:17,836 WARN L170 areAnnotationChecker]: ULTIMATE.initEXIT has no Hoare annotation [2022-04-15 05:42:17,836 WARN L170 areAnnotationChecker]: ULTIMATE.startFINAL has no Hoare annotation [2022-04-15 05:42:17,836 WARN L170 areAnnotationChecker]: L21-3 has no Hoare annotation [2022-04-15 05:42:17,836 WARN L170 areAnnotationChecker]: L21-3 has no Hoare annotation [2022-04-15 05:42:17,836 WARN L170 areAnnotationChecker]: L23 has no Hoare annotation [2022-04-15 05:42:17,836 WARN L170 areAnnotationChecker]: L23 has no Hoare annotation [2022-04-15 05:42:17,836 WARN L170 areAnnotationChecker]: L7 has no Hoare annotation [2022-04-15 05:42:17,836 WARN L170 areAnnotationChecker]: L7 has no Hoare annotation [2022-04-15 05:42:17,836 WARN L170 areAnnotationChecker]: L6-2 has no Hoare annotation [2022-04-15 05:42:17,836 WARN L170 areAnnotationChecker]: L30 has no Hoare annotation [2022-04-15 05:42:17,836 WARN L170 areAnnotationChecker]: L23-2 has no Hoare annotation [2022-04-15 05:42:17,836 WARN L170 areAnnotationChecker]: __VERIFIER_assertEXIT has no Hoare annotation [2022-04-15 05:42:17,836 WARN L170 areAnnotationChecker]: mainFINAL has no Hoare annotation [2022-04-15 05:42:17,837 WARN L170 areAnnotationChecker]: mainEXIT has no Hoare annotation [2022-04-15 05:42:17,837 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. [2022-04-15 05:42:17,839 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.04 05:42:17 BoogieIcfgContainer [2022-04-15 05:42:17,839 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-04-15 05:42:17,841 INFO L158 Benchmark]: Toolchain (without parser) took 1068.91ms. Allocated memory is still 220.2MB. Free memory was 171.6MB in the beginning and 145.8MB in the end (delta: 25.8MB). Peak memory consumption was 25.6MB. Max. memory is 8.0GB. [2022-04-15 05:42:17,843 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 220.2MB. Free memory was 187.8MB in the beginning and 187.6MB in the end (delta: 151.8kB). There was no memory consumed. Max. memory is 8.0GB. [2022-04-15 05:42:17,843 INFO L158 Benchmark]: CACSL2BoogieTranslator took 204.93ms. Allocated memory is still 220.2MB. Free memory was 171.3MB in the beginning and 196.7MB in the end (delta: -25.4MB). Peak memory consumption was 11.0MB. Max. memory is 8.0GB. [2022-04-15 05:42:17,845 INFO L158 Benchmark]: Boogie Preprocessor took 26.12ms. Allocated memory is still 220.2MB. Free memory was 196.7MB in the beginning and 195.1MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-04-15 05:42:17,846 INFO L158 Benchmark]: RCFGBuilder took 233.96ms. Allocated memory is still 220.2MB. Free memory was 195.1MB in the beginning and 185.1MB in the end (delta: 10.0MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2022-04-15 05:42:17,846 INFO L158 Benchmark]: TraceAbstraction took 597.88ms. Allocated memory is still 220.2MB. Free memory was 184.6MB in the beginning and 145.8MB in the end (delta: 38.8MB). Peak memory consumption was 38.8MB. Max. memory is 8.0GB. [2022-04-15 05:42:17,850 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 220.2MB. Free memory was 187.8MB in the beginning and 187.6MB in the end (delta: 151.8kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 204.93ms. Allocated memory is still 220.2MB. Free memory was 171.3MB in the beginning and 196.7MB in the end (delta: -25.4MB). Peak memory consumption was 11.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 26.12ms. Allocated memory is still 220.2MB. Free memory was 196.7MB in the beginning and 195.1MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 233.96ms. Allocated memory is still 220.2MB. Free memory was 195.1MB in the beginning and 185.1MB in the end (delta: 10.0MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * TraceAbstraction took 597.88ms. Allocated memory is still 220.2MB. Free memory was 184.6MB in the beginning and 145.8MB in the end (delta: 38.8MB). Peak memory consumption was 38.8MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 7]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L15] int a[5]; [L16] int len=0; [L17] _Bool c=__VERIFIER_nondet_bool(); [L18] int i; [L21] COND FALSE !(\read(c)) [L30] CALL __VERIFIER_assert(len==5) [L6] COND TRUE !(cond) [L7] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 24 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.5s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 14 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 13 mSDsluCounter, 24 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 3 mSDsCounter, 2 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3 IncrementalHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2 mSolverCounterUnsat, 21 mSDtfsCounter, 3 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=21occurred 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, 0 StatesRemovedByMinimization, 0 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! [2022-04-15 05:42:17,875 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...