/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/loop-acceleration/multivar_1-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-fb4f59a-m [2022-04-28 09:16:31,658 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-04-28 09:16:31,659 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-04-28 09:16:31,689 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-04-28 09:16:31,701 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-04-28 09:16:31,702 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-04-28 09:16:31,702 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-04-28 09:16:31,703 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-04-28 09:16:31,704 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-04-28 09:16:31,704 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-04-28 09:16:31,705 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-04-28 09:16:31,706 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-04-28 09:16:31,707 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-04-28 09:16:31,712 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-04-28 09:16:31,714 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-04-28 09:16:31,716 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-04-28 09:16:31,718 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-04-28 09:16:31,724 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-04-28 09:16:31,728 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-04-28 09:16:31,729 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-04-28 09:16:31,735 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-04-28 09:16:31,736 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 09:16:31,745 INFO L113 SettingsManager]: Loading preferences was successful [2022-04-28 09:16:31,746 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-04-28 09:16:31,747 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-04-28 09:16:31,747 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-04-28 09:16:31,747 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-04-28 09:16:31,747 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-04-28 09:16:31,747 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-04-28 09:16:31,747 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-04-28 09:16:31,747 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-04-28 09:16:31,748 INFO L138 SettingsManager]: * Use constant arrays=true [2022-04-28 09:16:31,748 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-04-28 09:16:31,748 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-04-28 09:16:31,748 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-04-28 09:16:31,748 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-04-28 09:16:31,748 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-04-28 09:16:31,749 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-28 09:16:31,749 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-04-28 09:16:31,749 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2022-04-28 09:16:31,749 INFO L138 SettingsManager]: * Trace refinement strategy=ACCELERATED_INTERPOLATION [2022-04-28 09:16:31,749 INFO L138 SettingsManager]: * Trace refinement strategy used in Accelerated Interpolation=CAMEL [2022-04-28 09:16:31,749 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-04-28 09:16:31,749 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=QVASR [2022-04-28 09:16:31,749 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-04-28 09:16:31,947 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-04-28 09:16:31,963 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-04-28 09:16:31,965 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-04-28 09:16:31,966 INFO L271 PluginConnector]: Initializing CDTParser... [2022-04-28 09:16:31,967 INFO L275 PluginConnector]: CDTParser initialized [2022-04-28 09:16:31,967 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-acceleration/multivar_1-2.c [2022-04-28 09:16:32,019 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c7e65b00d/c39428271dc94adf832b5a60f4dd0429/FLAGd3ec3bfe1 [2022-04-28 09:16:32,371 INFO L306 CDTParser]: Found 1 translation units. [2022-04-28 09:16:32,371 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-acceleration/multivar_1-2.c [2022-04-28 09:16:32,375 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c7e65b00d/c39428271dc94adf832b5a60f4dd0429/FLAGd3ec3bfe1 [2022-04-28 09:16:32,384 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c7e65b00d/c39428271dc94adf832b5a60f4dd0429 [2022-04-28 09:16:32,386 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-04-28 09:16:32,387 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-04-28 09:16:32,389 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-04-28 09:16:32,389 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-04-28 09:16:32,391 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-04-28 09:16:32,392 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.04 09:16:32" (1/1) ... [2022-04-28 09:16:32,393 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@32f98777 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 09:16:32, skipping insertion in model container [2022-04-28 09:16:32,393 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.04 09:16:32" (1/1) ... [2022-04-28 09:16:32,397 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-04-28 09:16:32,404 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-04-28 09:16:32,504 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-acceleration/multivar_1-2.c[374,387] [2022-04-28 09:16:32,513 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-28 09:16:32,518 INFO L203 MainTranslator]: Completed pre-run [2022-04-28 09:16:32,533 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-acceleration/multivar_1-2.c[374,387] [2022-04-28 09:16:32,534 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-28 09:16:32,544 INFO L208 MainTranslator]: Completed translation [2022-04-28 09:16:32,545 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 09:16:32 WrapperNode [2022-04-28 09:16:32,545 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-04-28 09:16:32,545 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-04-28 09:16:32,546 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-04-28 09:16:32,546 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-04-28 09:16:32,552 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 09:16:32" (1/1) ... [2022-04-28 09:16:32,552 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 09:16:32" (1/1) ... [2022-04-28 09:16:32,556 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 09:16:32" (1/1) ... [2022-04-28 09:16:32,556 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 09:16:32" (1/1) ... [2022-04-28 09:16:32,562 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 09:16:32" (1/1) ... [2022-04-28 09:16:32,565 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 09:16:32" (1/1) ... [2022-04-28 09:16:32,569 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 09:16:32" (1/1) ... [2022-04-28 09:16:32,571 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-04-28 09:16:32,572 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-04-28 09:16:32,573 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-04-28 09:16:32,573 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-04-28 09:16:32,573 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 09:16:32" (1/1) ... [2022-04-28 09:16:32,582 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-28 09:16:32,590 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-28 09:16:32,599 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 09:16:32,617 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 09:16:32,633 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-04-28 09:16:32,636 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-04-28 09:16:32,636 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-04-28 09:16:32,636 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-04-28 09:16:32,636 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-04-28 09:16:32,636 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-04-28 09:16:32,636 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-04-28 09:16:32,636 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-04-28 09:16:32,637 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-04-28 09:16:32,637 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2022-04-28 09:16:32,637 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-04-28 09:16:32,637 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-04-28 09:16:32,637 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-04-28 09:16:32,637 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-04-28 09:16:32,638 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-04-28 09:16:32,638 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-04-28 09:16:32,638 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-04-28 09:16:32,638 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-04-28 09:16:32,686 INFO L234 CfgBuilder]: Building ICFG [2022-04-28 09:16:32,687 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-04-28 09:16:32,773 INFO L275 CfgBuilder]: Performing block encoding [2022-04-28 09:16:32,777 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-04-28 09:16:32,777 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-04-28 09:16:32,778 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.04 09:16:32 BoogieIcfgContainer [2022-04-28 09:16:32,779 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-04-28 09:16:32,780 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-04-28 09:16:32,780 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-04-28 09:16:32,783 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-04-28 09:16:32,783 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.04 09:16:32" (1/3) ... [2022-04-28 09:16:32,784 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78a0d4da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.04 09:16:32, skipping insertion in model container [2022-04-28 09:16:32,784 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 09:16:32" (2/3) ... [2022-04-28 09:16:32,784 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78a0d4da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.04 09:16:32, skipping insertion in model container [2022-04-28 09:16:32,784 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.04 09:16:32" (3/3) ... [2022-04-28 09:16:32,785 INFO L111 eAbstractionObserver]: Analyzing ICFG multivar_1-2.c [2022-04-28 09:16:32,794 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-04-28 09:16:32,794 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-04-28 09:16:32,823 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-28 09:16:32,828 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@4afdc7cb, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@7b025ae7 [2022-04-28 09:16:32,828 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-04-28 09:16:32,840 INFO L276 IsEmpty]: Start isEmpty. Operand has 18 states, 10 states have (on average 1.4) internal successors, (14), 11 states have internal predecessors, (14), 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) [2022-04-28 09:16:32,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-04-28 09:16:32,846 INFO L187 NwaCegarLoop]: Found error trace [2022-04-28 09:16:32,847 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-28 09:16:32,847 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-28 09:16:32,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-28 09:16:32,853 INFO L85 PathProgramCache]: Analyzing trace with hash 1301225826, now seen corresponding path program 1 times [2022-04-28 09:16:32,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-28 09:16:32,859 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [306474877] [2022-04-28 09:16:32,870 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-28 09:16:32,870 INFO L85 PathProgramCache]: Analyzing trace with hash 1301225826, now seen corresponding path program 2 times [2022-04-28 09:16:32,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-28 09:16:32,873 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279730923] [2022-04-28 09:16:32,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-28 09:16:32,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-28 09:16:32,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-28 09:16:32,980 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-04-28 09:16:32,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-28 09:16:33,007 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-04-28 09:16:33,009 INFO L130 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found a feasible trace [2022-04-28 09:16:33,009 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-04-28 09:16:33,034 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-04-28 09:16:33,036 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-04-28 09:16:33,039 INFO L356 BasicCegarLoop]: Path program histogram: [2] [2022-04-28 09:16:33,042 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-04-28 09:16:33,059 WARN L170 areAnnotationChecker]: reach_errorENTRY has no Hoare annotation [2022-04-28 09:16:33,059 WARN L170 areAnnotationChecker]: ULTIMATE.initENTRY has no Hoare annotation [2022-04-28 09:16:33,059 WARN L170 areAnnotationChecker]: ULTIMATE.startENTRY has no Hoare annotation [2022-04-28 09:16:33,059 WARN L170 areAnnotationChecker]: ULTIMATE.startENTRY has no Hoare annotation [2022-04-28 09:16:33,059 WARN L170 areAnnotationChecker]: mainENTRY has no Hoare annotation [2022-04-28 09:16:33,060 WARN L170 areAnnotationChecker]: __VERIFIER_assertENTRY has no Hoare annotation [2022-04-28 09:16:33,060 WARN L170 areAnnotationChecker]: reach_errorFINAL has no Hoare annotation [2022-04-28 09:16:33,060 WARN L170 areAnnotationChecker]: ULTIMATE.initFINAL has no Hoare annotation [2022-04-28 09:16:33,060 WARN L170 areAnnotationChecker]: L-1 has no Hoare annotation [2022-04-28 09:16:33,060 WARN L170 areAnnotationChecker]: L-1 has no Hoare annotation [2022-04-28 09:16:33,060 WARN L170 areAnnotationChecker]: L17-2 has no Hoare annotation [2022-04-28 09:16:33,060 WARN L170 areAnnotationChecker]: L17-2 has no Hoare annotation [2022-04-28 09:16:33,060 WARN L170 areAnnotationChecker]: L17-2 has no Hoare annotation [2022-04-28 09:16:33,060 WARN L170 areAnnotationChecker]: L7 has no Hoare annotation [2022-04-28 09:16:33,060 WARN L170 areAnnotationChecker]: L7 has no Hoare annotation [2022-04-28 09:16:33,060 WARN L170 areAnnotationChecker]: ULTIMATE.initEXIT has no Hoare annotation [2022-04-28 09:16:33,060 WARN L170 areAnnotationChecker]: ULTIMATE.startFINAL has no Hoare annotation [2022-04-28 09:16:33,060 WARN L170 areAnnotationChecker]: L17-3 has no Hoare annotation [2022-04-28 09:16:33,060 WARN L170 areAnnotationChecker]: L17-3 has no Hoare annotation [2022-04-28 09:16:33,060 WARN L170 areAnnotationChecker]: L8 has no Hoare annotation [2022-04-28 09:16:33,061 WARN L170 areAnnotationChecker]: L8 has no Hoare annotation [2022-04-28 09:16:33,061 WARN L170 areAnnotationChecker]: L7-2 has no Hoare annotation [2022-04-28 09:16:33,061 WARN L170 areAnnotationChecker]: mainFINAL has no Hoare annotation [2022-04-28 09:16:33,061 WARN L170 areAnnotationChecker]: __VERIFIER_assertEXIT has no Hoare annotation [2022-04-28 09:16:33,061 WARN L170 areAnnotationChecker]: mainEXIT has no Hoare annotation [2022-04-28 09:16:33,061 INFO L163 areAnnotationChecker]: CFG has 0 edges. 0 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. 0 times interpolants missing. [2022-04-28 09:16:33,062 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.04 09:16:33 BoogieIcfgContainer [2022-04-28 09:16:33,062 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-04-28 09:16:33,063 INFO L158 Benchmark]: Toolchain (without parser) took 675.57ms. Allocated memory is still 205.5MB. Free memory was 157.4MB in the beginning and 153.7MB in the end (delta: 3.7MB). Peak memory consumption was 2.8MB. Max. memory is 8.0GB. [2022-04-28 09:16:33,063 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 205.5MB. Free memory was 173.6MB in the beginning and 173.4MB in the end (delta: 151.9kB). There was no memory consumed. Max. memory is 8.0GB. [2022-04-28 09:16:33,064 INFO L158 Benchmark]: CACSL2BoogieTranslator took 155.88ms. Allocated memory is still 205.5MB. Free memory was 157.1MB in the beginning and 182.2MB in the end (delta: -25.1MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2022-04-28 09:16:33,064 INFO L158 Benchmark]: Boogie Preprocessor took 25.89ms. Allocated memory is still 205.5MB. Free memory was 182.2MB in the beginning and 180.9MB in the end (delta: 1.2MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-04-28 09:16:33,065 INFO L158 Benchmark]: RCFGBuilder took 206.20ms. Allocated memory is still 205.5MB. Free memory was 180.7MB in the beginning and 170.5MB in the end (delta: 10.2MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2022-04-28 09:16:33,065 INFO L158 Benchmark]: TraceAbstraction took 282.26ms. Allocated memory is still 205.5MB. Free memory was 170.2MB in the beginning and 153.7MB in the end (delta: 16.5MB). Peak memory consumption was 16.8MB. Max. memory is 8.0GB. [2022-04-28 09:16:33,067 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 0.12ms. Allocated memory is still 205.5MB. Free memory was 173.6MB in the beginning and 173.4MB in the end (delta: 151.9kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 155.88ms. Allocated memory is still 205.5MB. Free memory was 157.1MB in the beginning and 182.2MB in the end (delta: -25.1MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * Boogie Preprocessor took 25.89ms. Allocated memory is still 205.5MB. Free memory was 182.2MB in the beginning and 180.9MB in the end (delta: 1.2MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 206.20ms. Allocated memory is still 205.5MB. Free memory was 180.7MB in the beginning and 170.5MB in the end (delta: 10.2MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * TraceAbstraction took 282.26ms. Allocated memory is still 205.5MB. Free memory was 170.2MB in the beginning and 153.7MB in the end (delta: 16.5MB). Peak memory consumption was 16.8MB. 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: 8]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L14] unsigned int x = __VERIFIER_nondet_uint(); [L15] unsigned int y = x + 1; [L17] COND FALSE !(x < 1024) [L22] CALL __VERIFIER_assert(x == y) [L7] COND TRUE !(cond) [L8] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 21 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.2s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=18occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2022-04-28 09:16:33,102 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...