/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_2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-fb4f59a-m [2022-04-28 09:12:19,263 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-04-28 09:12:19,290 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-04-28 09:12:19,308 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-04-28 09:12:19,314 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-04-28 09:12:19,315 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-04-28 09:12:19,315 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-04-28 09:12:19,316 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-04-28 09:12:19,316 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-04-28 09:12:19,317 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-04-28 09:12:19,318 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-04-28 09:12:19,319 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-04-28 09:12:19,320 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-04-28 09:12:19,320 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-04-28 09:12:19,321 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-04-28 09:12:19,322 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-04-28 09:12:19,322 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-04-28 09:12:19,324 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-04-28 09:12:19,329 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-04-28 09:12:19,330 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-04-28 09:12:19,330 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-04-28 09:12:19,331 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 09:12:19,336 INFO L113 SettingsManager]: Loading preferences was successful [2022-04-28 09:12:19,337 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-04-28 09:12:19,337 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-04-28 09:12:19,337 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-04-28 09:12:19,337 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-04-28 09:12:19,338 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-04-28 09:12:19,338 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-04-28 09:12:19,338 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-04-28 09:12:19,338 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-04-28 09:12:19,338 INFO L138 SettingsManager]: * Use constant arrays=true [2022-04-28 09:12:19,338 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-04-28 09:12:19,338 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-04-28 09:12:19,338 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-04-28 09:12:19,338 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-04-28 09:12:19,338 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-04-28 09:12:19,338 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-28 09:12:19,339 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-04-28 09:12:19,339 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2022-04-28 09:12:19,339 INFO L138 SettingsManager]: * Trace refinement strategy=ACCELERATED_INTERPOLATION [2022-04-28 09:12:19,339 INFO L138 SettingsManager]: * Trace refinement strategy used in Accelerated Interpolation=CAMEL [2022-04-28 09:12:19,339 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-04-28 09:12:19,339 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=QVASR [2022-04-28 09:12:19,339 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-04-28 09:12:19,501 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-04-28 09:12:19,518 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-04-28 09:12:19,519 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-04-28 09:12:19,520 INFO L271 PluginConnector]: Initializing CDTParser... [2022-04-28 09:12:19,522 INFO L275 PluginConnector]: CDTParser initialized [2022-04-28 09:12:19,523 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/while_infinite_loop_2.c [2022-04-28 09:12:19,569 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/462189554/c12e4cb190d24f5aba2f010931d625bf/FLAG74f9fe418 [2022-04-28 09:12:19,923 INFO L306 CDTParser]: Found 1 translation units. [2022-04-28 09:12:19,923 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/while_infinite_loop_2.c [2022-04-28 09:12:19,928 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/462189554/c12e4cb190d24f5aba2f010931d625bf/FLAG74f9fe418 [2022-04-28 09:12:19,940 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/462189554/c12e4cb190d24f5aba2f010931d625bf [2022-04-28 09:12:19,943 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-04-28 09:12:19,944 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-04-28 09:12:19,946 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-04-28 09:12:19,946 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-04-28 09:12:19,949 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-04-28 09:12:19,950 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.04 09:12:19" (1/1) ... [2022-04-28 09:12:19,950 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@359287db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 09:12:19, skipping insertion in model container [2022-04-28 09:12:19,951 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.04 09:12:19" (1/1) ... [2022-04-28 09:12:19,957 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-04-28 09:12:19,965 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-04-28 09:12:20,079 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_2.c[333,346] [2022-04-28 09:12:20,085 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-28 09:12:20,090 INFO L203 MainTranslator]: Completed pre-run [2022-04-28 09:12:20,098 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_2.c[333,346] [2022-04-28 09:12:20,099 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-28 09:12:20,107 INFO L208 MainTranslator]: Completed translation [2022-04-28 09:12:20,108 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 09:12:20 WrapperNode [2022-04-28 09:12:20,108 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-04-28 09:12:20,109 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-04-28 09:12:20,109 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-04-28 09:12:20,109 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-04-28 09:12:20,115 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 09:12:20" (1/1) ... [2022-04-28 09:12:20,115 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 09:12:20" (1/1) ... [2022-04-28 09:12:20,118 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 09:12:20" (1/1) ... [2022-04-28 09:12:20,119 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 09:12:20" (1/1) ... [2022-04-28 09:12:20,123 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 09:12:20" (1/1) ... [2022-04-28 09:12:20,126 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 09:12:20" (1/1) ... [2022-04-28 09:12:20,126 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 09:12:20" (1/1) ... [2022-04-28 09:12:20,127 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-04-28 09:12:20,128 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-04-28 09:12:20,128 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-04-28 09:12:20,128 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-04-28 09:12:20,128 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 09:12:20" (1/1) ... [2022-04-28 09:12:20,133 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-28 09:12:20,140 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-28 09:12:20,149 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 09:12:20,150 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 09:12:20,178 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-04-28 09:12:20,178 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-04-28 09:12:20,178 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-04-28 09:12:20,178 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-04-28 09:12:20,179 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-04-28 09:12:20,179 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-04-28 09:12:20,179 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-04-28 09:12:20,179 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-04-28 09:12:20,179 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-04-28 09:12:20,180 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-04-28 09:12:20,180 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-04-28 09:12:20,180 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-04-28 09:12:20,180 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-04-28 09:12:20,180 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-04-28 09:12:20,181 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-04-28 09:12:20,181 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-04-28 09:12:20,182 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-04-28 09:12:20,223 INFO L234 CfgBuilder]: Building ICFG [2022-04-28 09:12:20,224 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-04-28 09:12:20,339 INFO L275 CfgBuilder]: Performing block encoding [2022-04-28 09:12:20,345 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-04-28 09:12:20,346 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-04-28 09:12:20,347 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.04 09:12:20 BoogieIcfgContainer [2022-04-28 09:12:20,347 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-04-28 09:12:20,348 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-04-28 09:12:20,348 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-04-28 09:12:20,351 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-04-28 09:12:20,352 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.04 09:12:19" (1/3) ... [2022-04-28 09:12:20,352 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5387a283 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.04 09:12:20, skipping insertion in model container [2022-04-28 09:12:20,352 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 09:12:20" (2/3) ... [2022-04-28 09:12:20,353 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5387a283 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.04 09:12:20, skipping insertion in model container [2022-04-28 09:12:20,353 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.04 09:12:20" (3/3) ... [2022-04-28 09:12:20,354 INFO L111 eAbstractionObserver]: Analyzing ICFG while_infinite_loop_2.c [2022-04-28 09:12:20,363 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-04-28 09:12:20,363 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-04-28 09:12:20,405 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-28 09:12:20,411 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@748786d9, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@2baf35c7 [2022-04-28 09:12:20,412 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-04-28 09:12:20,426 INFO L276 IsEmpty]: Start isEmpty. Operand has 19 states, 10 states have (on average 1.4) internal successors, (14), 12 states have internal predecessors, (14), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-04-28 09:12:20,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-04-28 09:12:20,430 INFO L187 NwaCegarLoop]: Found error trace [2022-04-28 09:12:20,431 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-28 09:12:20,431 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-28 09:12:20,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-28 09:12:20,436 INFO L85 PathProgramCache]: Analyzing trace with hash 612371967, now seen corresponding path program 1 times [2022-04-28 09:12:20,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-28 09:12:20,442 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1184114614] [2022-04-28 09:12:20,451 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-28 09:12:20,451 INFO L85 PathProgramCache]: Analyzing trace with hash 612371967, now seen corresponding path program 2 times [2022-04-28 09:12:20,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-28 09:12:20,454 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [246316711] [2022-04-28 09:12:20,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-28 09:12:20,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-28 09:12:20,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-28 09:12:20,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-28 09:12:20,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-28 09:12:20,673 INFO L290 TraceCheckUtils]: 0: Hoare triple {30#(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(24, 2);call #Ultimate.allocInit(12, 3); {22#true} is VALID [2022-04-28 09:12:20,674 INFO L290 TraceCheckUtils]: 1: Hoare triple {22#true} assume true; {22#true} is VALID [2022-04-28 09:12:20,674 INFO L284 TraceCheckUtils]: 2: Hoare quadruple {22#true} {22#true} #35#return; {22#true} is VALID [2022-04-28 09:12:20,675 INFO L272 TraceCheckUtils]: 0: Hoare triple {22#true} call ULTIMATE.init(); {30#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} is VALID [2022-04-28 09:12:20,675 INFO L290 TraceCheckUtils]: 1: Hoare triple {30#(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(24, 2);call #Ultimate.allocInit(12, 3); {22#true} is VALID [2022-04-28 09:12:20,676 INFO L290 TraceCheckUtils]: 2: Hoare triple {22#true} assume true; {22#true} is VALID [2022-04-28 09:12:20,676 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {22#true} {22#true} #35#return; {22#true} is VALID [2022-04-28 09:12:20,676 INFO L272 TraceCheckUtils]: 4: Hoare triple {22#true} call #t~ret4 := main(); {22#true} is VALID [2022-04-28 09:12:20,676 INFO L290 TraceCheckUtils]: 5: Hoare triple {22#true} ~x~0 := 0; {27#(= main_~x~0 0)} is VALID [2022-04-28 09:12:20,677 INFO L290 TraceCheckUtils]: 6: Hoare triple {27#(= main_~x~0 0)} assume !false; {27#(= main_~x~0 0)} is VALID [2022-04-28 09:12:20,678 INFO L272 TraceCheckUtils]: 7: Hoare triple {27#(= main_~x~0 0)} call __VERIFIER_assert((if 0 == ~x~0 then 1 else 0)); {28#(not (= |__VERIFIER_assert_#in~cond| 0))} is VALID [2022-04-28 09:12:20,678 INFO L290 TraceCheckUtils]: 8: Hoare triple {28#(not (= |__VERIFIER_assert_#in~cond| 0))} ~cond := #in~cond; {29#(not (= __VERIFIER_assert_~cond 0))} is VALID [2022-04-28 09:12:20,679 INFO L290 TraceCheckUtils]: 9: Hoare triple {29#(not (= __VERIFIER_assert_~cond 0))} assume 0 == ~cond; {23#false} is VALID [2022-04-28 09:12:20,679 INFO L290 TraceCheckUtils]: 10: Hoare triple {23#false} assume !false; {23#false} is VALID [2022-04-28 09:12:20,679 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 09:12:20,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-28 09:12:20,680 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [246316711] [2022-04-28 09:12:20,680 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [246316711] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-28 09:12:20,681 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-28 09:12:20,681 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-04-28 09:12:20,683 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-28 09:12:20,683 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1184114614] [2022-04-28 09:12:20,683 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1184114614] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-28 09:12:20,683 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-28 09:12:20,683 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-04-28 09:12:20,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730189431] [2022-04-28 09:12:20,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-28 09:12:20,687 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 4 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 [2022-04-28 09:12:20,688 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-28 09:12:20,690 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 6 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 4 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) [2022-04-28 09:12:20,702 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 11 edges. 11 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-28 09:12:20,702 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-04-28 09:12:20,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-28 09:12:20,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-04-28 09:12:20,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-04-28 09:12:20,718 INFO L87 Difference]: Start difference. First operand has 19 states, 10 states have (on average 1.4) internal successors, (14), 12 states have internal predecessors, (14), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 6 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 4 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) [2022-04-28 09:12:20,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 09:12:20,830 INFO L93 Difference]: Finished difference Result 25 states and 32 transitions. [2022-04-28 09:12:20,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-04-28 09:12:20,830 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 4 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 [2022-04-28 09:12:20,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-28 09:12:20,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 4 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) [2022-04-28 09:12:20,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 32 transitions. [2022-04-28 09:12:20,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 4 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) [2022-04-28 09:12:20,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 32 transitions. [2022-04-28 09:12:20,842 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 6 states and 32 transitions. [2022-04-28 09:12:20,882 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 32 edges. 32 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-28 09:12:20,885 INFO L225 Difference]: With dead ends: 25 [2022-04-28 09:12:20,886 INFO L226 Difference]: Without dead ends: 0 [2022-04-28 09:12:20,888 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-04-28 09:12:20,891 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 10 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-28 09:12:20,891 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 26 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-28 09:12:20,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-04-28 09:12:20,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-04-28 09:12:20,904 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-28 09:12:20,905 INFO L82 GeneralOperation]: Start isEquivalent. First operand 0 states. Second operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-28 09:12:20,905 INFO L74 IsIncluded]: Start isIncluded. First operand 0 states. Second operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-28 09:12:20,905 INFO L87 Difference]: Start difference. First operand 0 states. Second operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-28 09:12:20,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 09:12:20,906 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2022-04-28 09:12:20,906 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-04-28 09:12:20,906 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-28 09:12:20,907 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-28 09:12:20,907 INFO L74 IsIncluded]: Start isIncluded. First operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand 0 states. [2022-04-28 09:12:20,907 INFO L87 Difference]: Start difference. First operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand 0 states. [2022-04-28 09:12:20,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 09:12:20,907 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2022-04-28 09:12:20,907 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-04-28 09:12:20,908 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-28 09:12:20,908 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-28 09:12:20,908 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-28 09:12:20,908 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-28 09:12:20,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-28 09:12:20,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-04-28 09:12:20,909 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 11 [2022-04-28 09:12:20,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-28 09:12:20,910 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-04-28 09:12:20,910 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 4 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) [2022-04-28 09:12:20,910 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 0 states and 0 transitions. [2022-04-28 09:12:20,910 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 0 edges. 0 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-28 09:12:20,910 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-04-28 09:12:20,910 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-28 09:12:20,912 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-04-28 09:12:20,913 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-04-28 09:12:20,917 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-04-28 09:12:21,006 INFO L899 garLoopResultBuilder]: For program point reach_errorEXIT(line 3) no Hoare annotation was computed. [2022-04-28 09:12:21,006 INFO L899 garLoopResultBuilder]: For program point reach_errorENTRY(line 3) no Hoare annotation was computed. [2022-04-28 09:12:21,023 INFO L899 garLoopResultBuilder]: For program point reach_errorFINAL(line 3) no Hoare annotation was computed. [2022-04-28 09:12:21,024 INFO L902 garLoopResultBuilder]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2022-04-28 09:12:21,024 INFO L895 garLoopResultBuilder]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|)) [2022-04-28 09:12:21,024 INFO L902 garLoopResultBuilder]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2022-04-28 09:12:21,024 INFO L895 garLoopResultBuilder]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: false [2022-04-28 09:12:21,024 INFO L902 garLoopResultBuilder]: At program point L-1(line -1) the Hoare annotation is: true [2022-04-28 09:12:21,024 INFO L902 garLoopResultBuilder]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2022-04-28 09:12:21,024 INFO L895 garLoopResultBuilder]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: false [2022-04-28 09:12:21,024 INFO L902 garLoopResultBuilder]: At program point mainENTRY(lines 11 20) the Hoare annotation is: true [2022-04-28 09:12:21,025 INFO L895 garLoopResultBuilder]: At program point mainEXIT(lines 11 20) the Hoare annotation is: false [2022-04-28 09:12:21,025 INFO L895 garLoopResultBuilder]: At program point L16(line 16) the Hoare annotation is: (= main_~x~0 0) [2022-04-28 09:12:21,025 INFO L895 garLoopResultBuilder]: At program point L16-1(lines 14 17) the Hoare annotation is: (= main_~x~0 0) [2022-04-28 09:12:21,025 INFO L895 garLoopResultBuilder]: At program point mainFINAL(lines 11 20) the Hoare annotation is: false [2022-04-28 09:12:21,025 INFO L895 garLoopResultBuilder]: At program point L14-2(lines 14 17) the Hoare annotation is: false [2022-04-28 09:12:21,025 INFO L902 garLoopResultBuilder]: At program point __VERIFIER_assertENTRY(lines 5 10) the Hoare annotation is: true [2022-04-28 09:12:21,025 INFO L895 garLoopResultBuilder]: At program point __VERIFIER_assertEXIT(lines 5 10) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0))) [2022-04-28 09:12:21,025 INFO L895 garLoopResultBuilder]: At program point L7(line 7) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2022-04-28 09:12:21,025 INFO L895 garLoopResultBuilder]: At program point L6(lines 6 8) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0))) [2022-04-28 09:12:21,026 INFO L895 garLoopResultBuilder]: At program point L6-2(lines 5 10) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0))) [2022-04-28 09:12:21,026 INFO L895 garLoopResultBuilder]: At program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 7) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2022-04-28 09:12:21,028 INFO L356 BasicCegarLoop]: Path program histogram: [2] [2022-04-28 09:12:21,030 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-04-28 09:12:21,033 WARN L170 areAnnotationChecker]: reach_errorENTRY has no Hoare annotation [2022-04-28 09:12:21,034 WARN L170 areAnnotationChecker]: reach_errorFINAL has no Hoare annotation [2022-04-28 09:12:21,037 INFO L163 areAnnotationChecker]: CFG has 22 edges. 22 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. 0 times interpolants missing. [2022-04-28 09:12:21,045 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.04 09:12:21 BoogieIcfgContainer [2022-04-28 09:12:21,045 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-04-28 09:12:21,050 INFO L158 Benchmark]: Toolchain (without parser) took 1101.70ms. Allocated memory was 172.0MB in the beginning and 210.8MB in the end (delta: 38.8MB). Free memory was 123.2MB in the beginning and 186.4MB in the end (delta: -63.2MB). Peak memory consumption was 28.9MB. Max. memory is 8.0GB. [2022-04-28 09:12:21,050 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 172.0MB. Free memory was 139.4MB in the beginning and 139.2MB in the end (delta: 136.4kB). There was no memory consumed. Max. memory is 8.0GB. [2022-04-28 09:12:21,051 INFO L158 Benchmark]: CACSL2BoogieTranslator took 161.84ms. Allocated memory is still 172.0MB. Free memory was 123.0MB in the beginning and 147.7MB in the end (delta: -24.7MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2022-04-28 09:12:21,051 INFO L158 Benchmark]: Boogie Preprocessor took 18.58ms. Allocated memory is still 172.0MB. Free memory was 147.7MB in the beginning and 146.3MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-04-28 09:12:21,051 INFO L158 Benchmark]: RCFGBuilder took 219.37ms. Allocated memory is still 172.0MB. Free memory was 146.3MB in the beginning and 137.2MB in the end (delta: 9.1MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. [2022-04-28 09:12:21,053 INFO L158 Benchmark]: TraceAbstraction took 697.26ms. Allocated memory was 172.0MB in the beginning and 210.8MB in the end (delta: 38.8MB). Free memory was 136.5MB in the beginning and 186.4MB in the end (delta: -50.0MB). Peak memory consumption was 42.0MB. Max. memory is 8.0GB. [2022-04-28 09:12:21,059 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 0.13ms. Allocated memory is still 172.0MB. Free memory was 139.4MB in the beginning and 139.2MB in the end (delta: 136.4kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 161.84ms. Allocated memory is still 172.0MB. Free memory was 123.0MB in the beginning and 147.7MB in the end (delta: -24.7MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * Boogie Preprocessor took 18.58ms. Allocated memory is still 172.0MB. Free memory was 147.7MB in the beginning and 146.3MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 219.37ms. Allocated memory is still 172.0MB. Free memory was 146.3MB in the beginning and 137.2MB in the end (delta: 9.1MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. * TraceAbstraction took 697.26ms. Allocated memory was 172.0MB in the beginning and 210.8MB in the end (delta: 38.8MB). Free memory was 136.5MB in the beginning and 186.4MB in the end (delta: -50.0MB). Peak memory consumption was 42.0MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 7]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 22 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.6s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 10 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 10 mSDsluCounter, 26 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 17 mSDsCounter, 4 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 15 IncrementalHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 4 mSolverCounterUnsat, 9 mSDtfsCounter, 15 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=19occurred in iteration=0, InterpolantAutomatonStates: 6, 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: 0.0s HoareAnnotationTime, 19 LocationsWithAnnotation, 31 PreInvPairs, 35 NumberOfFragments, 54 HoareAnnotationTreeSize, 31 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 19 FomulaSimplificationsInter, 15 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: x == 0 - ProcedureContractResult [Line: 11]: Procedure Contract for main Derived contract for procedure main: 0 - ProcedureContractResult [Line: 5]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert: \old(cond) == 0 || !(cond == 0) RESULT: Ultimate proved your program to be correct! [2022-04-28 09:12:21,089 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...