/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf -i ../../../trunk/examples/svcomp/loop-acceleration/multivar_1-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-b030c9e [2022-03-20 13:00:30,664 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-20 13:00:30,666 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-20 13:00:30,730 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-03-20 13:00:30,745 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-03-20 13:00:30,750 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-03-20 13:00:30,750 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-03-20 13:00:30,753 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-03-20 13:00:30,754 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-03-20 13:00:30,754 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-03-20 13:00:30,756 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-03-20 13:00:30,757 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-03-20 13:00:30,758 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-03-20 13:00:30,759 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-03-20 13:00:30,760 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-03-20 13:00:30,761 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-03-20 13:00:30,761 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-03-20 13:00:30,763 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-03-20 13:00:30,769 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-20 13:00:30,770 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-20 13:00:30,775 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-20 13:00:30,776 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf [2022-03-20 13:00:30,784 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-20 13:00:30,784 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-20 13:00:30,786 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-20 13:00:30,786 INFO L138 SettingsManager]: * sizeof long=4 [2022-03-20 13:00:30,786 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-20 13:00:30,787 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-03-20 13:00:30,787 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-20 13:00:30,787 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-20 13:00:30,787 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-20 13:00:30,788 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-20 13:00:30,788 INFO L138 SettingsManager]: * sizeof long double=12 [2022-03-20 13:00:30,788 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-20 13:00:30,788 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-20 13:00:30,788 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-20 13:00:30,789 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-20 13:00:30,789 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-20 13:00:30,789 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-03-20 13:00:30,789 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-20 13:00:30,789 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-20 13:00:30,789 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-20 13:00:30,790 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2022-03-20 13:00:30,790 INFO L138 SettingsManager]: * Trace refinement strategy=ACCELERATED_INTERPOLATION [2022-03-20 13:00:30,790 INFO L138 SettingsManager]: * Trace refinement strategy used in Accelerated Interpolation=CAMEL [2022-03-20 13:00:30,790 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-03-20 13:00:30,790 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=JORDAN [2022-03-20 13:00:30,790 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-03-20 13:00:31,006 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-20 13:00:31,024 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-20 13:00:31,026 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-20 13:00:31,026 INFO L271 PluginConnector]: Initializing CDTParser... [2022-03-20 13:00:31,028 INFO L275 PluginConnector]: CDTParser initialized [2022-03-20 13:00:31,029 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-acceleration/multivar_1-2.c [2022-03-20 13:00:31,089 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7412e619b/39106f93fdd848cbb22c92d7bbf0cece/FLAG53caf3b42 [2022-03-20 13:00:31,438 INFO L306 CDTParser]: Found 1 translation units. [2022-03-20 13:00:31,438 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-acceleration/multivar_1-2.c [2022-03-20 13:00:31,442 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7412e619b/39106f93fdd848cbb22c92d7bbf0cece/FLAG53caf3b42 [2022-03-20 13:00:31,453 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7412e619b/39106f93fdd848cbb22c92d7bbf0cece [2022-03-20 13:00:31,455 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-20 13:00:31,456 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-03-20 13:00:31,457 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-03-20 13:00:31,457 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-03-20 13:00:31,460 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-03-20 13:00:31,460 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.03 01:00:31" (1/1) ... [2022-03-20 13:00:31,461 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ec93af5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 01:00:31, skipping insertion in model container [2022-03-20 13:00:31,462 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.03 01:00:31" (1/1) ... [2022-03-20 13:00:31,484 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-03-20 13:00:31,493 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-03-20 13:00:31,591 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] [2022-03-20 13:00:31,613 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-20 13:00:31,618 INFO L203 MainTranslator]: Completed pre-run [2022-03-20 13:00:31,627 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] [2022-03-20 13:00:31,629 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-20 13:00:31,639 INFO L208 MainTranslator]: Completed translation [2022-03-20 13:00:31,640 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 01:00:31 WrapperNode [2022-03-20 13:00:31,640 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-03-20 13:00:31,641 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-20 13:00:31,641 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-20 13:00:31,641 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-20 13:00:31,649 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 01:00:31" (1/1) ... [2022-03-20 13:00:31,649 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 01:00:31" (1/1) ... [2022-03-20 13:00:31,653 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 01:00:31" (1/1) ... [2022-03-20 13:00:31,653 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 01:00:31" (1/1) ... [2022-03-20 13:00:31,656 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 01:00:31" (1/1) ... [2022-03-20 13:00:31,659 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 01:00:31" (1/1) ... [2022-03-20 13:00:31,659 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 01:00:31" (1/1) ... [2022-03-20 13:00:31,660 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-20 13:00:31,661 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-20 13:00:31,661 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-20 13:00:31,661 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-20 13:00:31,662 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 01:00:31" (1/1) ... [2022-03-20 13:00:31,668 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-20 13:00:31,679 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 13:00:31,692 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) [2022-03-20 13:00:31,704 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 [2022-03-20 13:00:31,738 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-03-20 13:00:31,738 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-20 13:00:31,739 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-03-20 13:00:31,739 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-03-20 13:00:31,739 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-03-20 13:00:31,739 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-03-20 13:00:31,739 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-03-20 13:00:31,739 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-03-20 13:00:31,740 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-03-20 13:00:31,740 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2022-03-20 13:00:31,740 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-03-20 13:00:31,741 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-03-20 13:00:31,741 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-03-20 13:00:31,742 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-03-20 13:00:31,742 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-20 13:00:31,742 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-03-20 13:00:31,742 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-03-20 13:00:31,742 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-03-20 13:00:31,802 INFO L234 CfgBuilder]: Building ICFG [2022-03-20 13:00:31,803 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-20 13:00:31,865 INFO L275 CfgBuilder]: Performing block encoding [2022-03-20 13:00:31,870 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-20 13:00:31,871 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-03-20 13:00:31,872 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.03 01:00:31 BoogieIcfgContainer [2022-03-20 13:00:31,872 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-20 13:00:31,874 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-20 13:00:31,874 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-20 13:00:31,884 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-20 13:00:31,884 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.03 01:00:31" (1/3) ... [2022-03-20 13:00:31,885 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2eeb1b74 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.03 01:00:31, skipping insertion in model container [2022-03-20 13:00:31,885 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 01:00:31" (2/3) ... [2022-03-20 13:00:31,886 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2eeb1b74 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.03 01:00:31, skipping insertion in model container [2022-03-20 13:00:31,886 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.03 01:00:31" (3/3) ... [2022-03-20 13:00:31,887 INFO L111 eAbstractionObserver]: Analyzing ICFG multivar_1-2.c [2022-03-20 13:00:31,891 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-03-20 13:00:31,891 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-20 13:00:31,936 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-20 13:00:31,947 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 [2022-03-20 13:00:31,948 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-03-20 13:00:31,960 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) [2022-03-20 13:00:31,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-03-20 13:00:31,987 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 13:00:31,987 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 13:00:31,988 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 13:00:31,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 13:00:31,998 INFO L85 PathProgramCache]: Analyzing trace with hash 1301225826, now seen corresponding path program 1 times [2022-03-20 13:00:32,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 13:00:32,005 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1676554770] [2022-03-20 13:00:32,014 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-20 13:00:32,014 INFO L85 PathProgramCache]: Analyzing trace with hash 1301225826, now seen corresponding path program 2 times [2022-03-20 13:00:32,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 13:00:32,017 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220748150] [2022-03-20 13:00:32,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 13:00:32,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 13:00:32,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-20 13:00:32,103 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-03-20 13:00:32,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-20 13:00:32,133 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-03-20 13:00:32,135 INFO L130 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found a feasible trace [2022-03-20 13:00:32,135 INFO L618 BasicCegarLoop]: Counterexample is feasible [2022-03-20 13:00:32,138 INFO L788 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-03-20 13:00:32,140 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-20 13:00:32,143 INFO L719 BasicCegarLoop]: Path program histogram: [2] [2022-03-20 13:00:32,145 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-03-20 13:00:32,153 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.03 01:00:32 BoogieIcfgContainer [2022-03-20 13:00:32,153 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-03-20 13:00:32,154 INFO L158 Benchmark]: Toolchain (without parser) took 697.83ms. Allocated memory was 181.4MB in the beginning and 234.9MB in the end (delta: 53.5MB). Free memory was 125.9MB in the beginning and 180.2MB in the end (delta: -54.3MB). There was no memory consumed. Max. memory is 8.0GB. [2022-03-20 13:00:32,155 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 181.4MB. Free memory is still 141.9MB. There was no memory consumed. Max. memory is 8.0GB. [2022-03-20 13:00:32,155 INFO L158 Benchmark]: CACSL2BoogieTranslator took 183.09ms. Allocated memory was 181.4MB in the beginning and 234.9MB in the end (delta: 53.5MB). Free memory was 125.7MB in the beginning and 206.4MB in the end (delta: -80.8MB). Peak memory consumption was 7.6MB. Max. memory is 8.0GB. [2022-03-20 13:00:32,156 INFO L158 Benchmark]: Boogie Preprocessor took 19.66ms. Allocated memory is still 234.9MB. Free memory was 206.4MB in the beginning and 204.9MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-03-20 13:00:32,156 INFO L158 Benchmark]: RCFGBuilder took 211.33ms. Allocated memory is still 234.9MB. Free memory was 204.9MB in the beginning and 194.9MB in the end (delta: 10.0MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2022-03-20 13:00:32,157 INFO L158 Benchmark]: TraceAbstraction took 279.55ms. Allocated memory is still 234.9MB. Free memory was 194.4MB in the beginning and 180.2MB in the end (delta: 14.2MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. [2022-03-20 13:00:32,159 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 181.4MB. Free memory is still 141.9MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 183.09ms. Allocated memory was 181.4MB in the beginning and 234.9MB in the end (delta: 53.5MB). Free memory was 125.7MB in the beginning and 206.4MB in the end (delta: -80.8MB). Peak memory consumption was 7.6MB. Max. memory is 8.0GB. * Boogie Preprocessor took 19.66ms. Allocated memory is still 234.9MB. Free memory was 206.4MB in the beginning and 204.9MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 211.33ms. Allocated memory is still 234.9MB. Free memory was 204.9MB in the beginning and 194.9MB in the end (delta: 10.0MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * TraceAbstraction took 279.55ms. Allocated memory is still 234.9MB. Free memory was 194.4MB in the beginning and 180.2MB in the end (delta: 14.2MB). Peak memory consumption was 14.7MB. 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, PartialOrderReductionTime: 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! [2022-03-20 13:00:32,191 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...