/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/acceleratedInterpolationQvasr_64.epf -i ../../../trunk/examples/svcomp/nla-digbench/bresenham-ll.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-05ce600 [2022-02-24 04:05:47,214 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-24 04:05:47,215 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-24 04:05:47,246 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-02-24 04:05:47,261 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-02-24 04:05:47,262 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-02-24 04:05:47,263 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-02-24 04:05:47,264 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-02-24 04:05:47,265 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-02-24 04:05:47,265 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-02-24 04:05:47,268 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-02-24 04:05:47,273 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-02-24 04:05:47,273 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-02-24 04:05:47,274 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-02-24 04:05:47,275 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-02-24 04:05:47,276 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-02-24 04:05:47,280 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-02-24 04:05:47,286 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-02-24 04:05:47,286 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-02-24 04:05:47,287 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-02-24 04:05:47,287 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationQvasr_64.epf [2022-02-24 04:05:47,296 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-24 04:05:47,296 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-24 04:05:47,297 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-24 04:05:47,297 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-02-24 04:05:47,297 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-24 04:05:47,297 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-24 04:05:47,297 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-24 04:05:47,297 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-24 04:05:47,298 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-24 04:05:47,298 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-24 04:05:47,298 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-24 04:05:47,298 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-24 04:05:47,298 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-24 04:05:47,298 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-02-24 04:05:47,299 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-24 04:05:47,299 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-24 04:05:47,299 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-24 04:05:47,299 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2022-02-24 04:05:47,299 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-02-24 04:05:47,299 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=QVASR [2022-02-24 04:05:47,299 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-02-24 04:05:47,471 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-24 04:05:47,493 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-24 04:05:47,495 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-24 04:05:47,496 INFO L271 PluginConnector]: Initializing CDTParser... [2022-02-24 04:05:47,497 INFO L275 PluginConnector]: CDTParser initialized [2022-02-24 04:05:47,498 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench/bresenham-ll.c [2022-02-24 04:05:47,557 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/11f29d52c/7833157dc68b415d993a0b679682e34e/FLAG9253f3c52 [2022-02-24 04:05:47,880 INFO L306 CDTParser]: Found 1 translation units. [2022-02-24 04:05:47,881 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench/bresenham-ll.c [2022-02-24 04:05:47,886 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/11f29d52c/7833157dc68b415d993a0b679682e34e/FLAG9253f3c52 [2022-02-24 04:05:48,318 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/11f29d52c/7833157dc68b415d993a0b679682e34e [2022-02-24 04:05:48,320 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-24 04:05:48,321 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-02-24 04:05:48,330 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-02-24 04:05:48,330 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-02-24 04:05:48,333 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-02-24 04:05:48,333 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 04:05:48" (1/1) ... [2022-02-24 04:05:48,334 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@102739b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:05:48, skipping insertion in model container [2022-02-24 04:05:48,334 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 04:05:48" (1/1) ... [2022-02-24 04:05:48,348 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-02-24 04:05:48,357 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-02-24 04:05:48,521 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench/bresenham-ll.c[597,610] [2022-02-24 04:05:48,537 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-24 04:05:48,543 INFO L203 MainTranslator]: Completed pre-run [2022-02-24 04:05:48,555 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench/bresenham-ll.c[597,610] [2022-02-24 04:05:48,572 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-24 04:05:48,581 INFO L208 MainTranslator]: Completed translation [2022-02-24 04:05:48,582 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:05:48 WrapperNode [2022-02-24 04:05:48,582 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-02-24 04:05:48,583 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-24 04:05:48,583 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-24 04:05:48,583 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-24 04:05:48,590 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:05:48" (1/1) ... [2022-02-24 04:05:48,591 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:05:48" (1/1) ... [2022-02-24 04:05:48,596 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:05:48" (1/1) ... [2022-02-24 04:05:48,596 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:05:48" (1/1) ... [2022-02-24 04:05:48,599 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:05:48" (1/1) ... [2022-02-24 04:05:48,601 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:05:48" (1/1) ... [2022-02-24 04:05:48,602 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:05:48" (1/1) ... [2022-02-24 04:05:48,603 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-24 04:05:48,603 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-24 04:05:48,604 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-24 04:05:48,604 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-24 04:05:48,606 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:05:48" (1/1) ... [2022-02-24 04:05:48,616 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-24 04:05:48,625 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-24 04:05:48,650 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) [2022-02-24 04:05:48,660 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 [2022-02-24 04:05:48,676 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-02-24 04:05:48,677 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-24 04:05:48,677 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-02-24 04:05:48,677 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-02-24 04:05:48,677 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-02-24 04:05:48,677 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-02-24 04:05:48,677 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-02-24 04:05:48,677 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-02-24 04:05:48,677 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-02-24 04:05:48,677 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-02-24 04:05:48,677 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-02-24 04:05:48,678 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-02-24 04:05:48,678 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-02-24 04:05:48,678 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-02-24 04:05:48,678 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-02-24 04:05:48,678 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-02-24 04:05:48,678 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-24 04:05:48,678 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-02-24 04:05:48,678 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-02-24 04:05:48,678 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-02-24 04:05:48,719 INFO L234 CfgBuilder]: Building ICFG [2022-02-24 04:05:48,721 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-24 04:05:48,815 INFO L275 CfgBuilder]: Performing block encoding [2022-02-24 04:05:48,820 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-24 04:05:48,820 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-02-24 04:05:48,821 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 04:05:48 BoogieIcfgContainer [2022-02-24 04:05:48,821 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-24 04:05:48,835 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-24 04:05:48,835 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-24 04:05:48,846 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-24 04:05:48,847 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.02 04:05:48" (1/3) ... [2022-02-24 04:05:48,847 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23857498 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 04:05:48, skipping insertion in model container [2022-02-24 04:05:48,847 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:05:48" (2/3) ... [2022-02-24 04:05:48,847 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23857498 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 04:05:48, skipping insertion in model container [2022-02-24 04:05:48,848 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 04:05:48" (3/3) ... [2022-02-24 04:05:48,848 INFO L111 eAbstractionObserver]: Analyzing ICFG bresenham-ll.c [2022-02-24 04:05:48,852 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-02-24 04:05:48,852 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-02-24 04:05:48,885 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-24 04:05:48,889 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=AcceleratedInterpolation, 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, mLoopAccelerationTechnique=QVASR [2022-02-24 04:05:48,890 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-02-24 04:05:48,898 INFO L276 IsEmpty]: Start isEmpty. Operand has 24 states, 15 states have (on average 1.4) internal successors, (21), 16 states have internal predecessors, (21), 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) [2022-02-24 04:05:48,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-02-24 04:05:48,902 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 04:05:48,903 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 04:05:48,903 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 04:05:48,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 04:05:48,907 INFO L85 PathProgramCache]: Analyzing trace with hash 2052809213, now seen corresponding path program 1 times [2022-02-24 04:05:48,913 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 04:05:48,913 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1217378766] [2022-02-24 04:05:48,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 04:05:48,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 04:05:48,955 INFO L213 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-24 04:05:48,989 WARN L132 FreeRefinementEngine]: Strategy FIXED_PREFERENCES was unsuccessful and could not determine trace feasibility [2022-02-24 04:05:48,990 INFO L628 BasicCegarLoop]: Counterexample might be feasible [2022-02-24 04:05:48,994 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-02-24 04:05:48,996 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-02-24 04:05:48,998 INFO L732 BasicCegarLoop]: Path program histogram: [1] [2022-02-24 04:05:49,000 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-02-24 04:05:49,006 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.02 04:05:49 BoogieIcfgContainer [2022-02-24 04:05:49,006 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-02-24 04:05:49,007 INFO L158 Benchmark]: Toolchain (without parser) took 686.02ms. Allocated memory was 233.8MB in the beginning and 281.0MB in the end (delta: 47.2MB). Free memory was 183.8MB in the beginning and 231.2MB in the end (delta: -47.4MB). Peak memory consumption was 1.3MB. Max. memory is 8.0GB. [2022-02-24 04:05:49,008 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 233.8MB. Free memory is still 200.0MB. There was no memory consumed. Max. memory is 8.0GB. [2022-02-24 04:05:49,009 INFO L158 Benchmark]: CACSL2BoogieTranslator took 252.21ms. Allocated memory was 233.8MB in the beginning and 281.0MB in the end (delta: 47.2MB). Free memory was 183.6MB in the beginning and 255.6MB in the end (delta: -72.0MB). Peak memory consumption was 10.8MB. Max. memory is 8.0GB. [2022-02-24 04:05:49,010 INFO L158 Benchmark]: Boogie Preprocessor took 20.20ms. Allocated memory is still 281.0MB. Free memory was 255.6MB in the beginning and 254.2MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-02-24 04:05:49,011 INFO L158 Benchmark]: RCFGBuilder took 218.07ms. Allocated memory is still 281.0MB. Free memory was 254.2MB in the beginning and 243.8MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2022-02-24 04:05:49,012 INFO L158 Benchmark]: TraceAbstraction took 171.27ms. Allocated memory is still 281.0MB. Free memory was 243.1MB in the beginning and 231.2MB in the end (delta: 11.9MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2022-02-24 04:05:49,013 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 233.8MB. Free memory is still 200.0MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 252.21ms. Allocated memory was 233.8MB in the beginning and 281.0MB in the end (delta: 47.2MB). Free memory was 183.6MB in the beginning and 255.6MB in the end (delta: -72.0MB). Peak memory consumption was 10.8MB. Max. memory is 8.0GB. * Boogie Preprocessor took 20.20ms. Allocated memory is still 281.0MB. Free memory was 255.6MB in the beginning and 254.2MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 218.07ms. Allocated memory is still 281.0MB. Free memory was 254.2MB in the beginning and 243.8MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * TraceAbstraction took 171.27ms. Allocated memory is still 281.0MB. Free memory was 243.1MB in the beginning and 231.2MB in the end (delta: 11.9MB). Peak memory consumption was 12.6MB. 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 - UnprovableResult [Line: 16]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L22] int X, Y; [L23] long long x, y, v, xy, yx; [L24] X = __VERIFIER_nondet_int() [L25] Y = __VERIFIER_nondet_int() [L26] v = ((long long) 2 * Y) - X [L27] y = 0 [L28] x = 0 [L30] COND TRUE 1 [L31] yx = (long long) Y*x [L32] xy = (long long) X*y [L33] CALL __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) [L14] COND TRUE !(cond) [L16] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 31 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.1s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, 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=24occurred 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 could not prove your program: unable to determine feasibility of some traces [2022-02-24 04:05:49,041 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...