/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/float-benchs/filter2_set.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-d966a43 [2022-02-01 00:15:20,228 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-01 00:15:20,230 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-01 00:15:20,292 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-02-01 00:15:20,317 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-02-01 00:15:20,318 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-02-01 00:15:20,319 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-02-01 00:15:20,319 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-02-01 00:15:20,320 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-02-01 00:15:20,320 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-02-01 00:15:20,321 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-02-01 00:15:20,322 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-02-01 00:15:20,325 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-02-01 00:15:20,326 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-02-01 00:15:20,329 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-02-01 00:15:20,330 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-02-01 00:15:20,340 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-02-01 00:15:20,346 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-02-01 00:15:20,346 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-02-01 00:15:20,347 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-02-01 00:15:20,348 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationQvasr_64.epf [2022-02-01 00:15:20,354 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-01 00:15:20,354 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-01 00:15:20,355 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-01 00:15:20,356 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-02-01 00:15:20,356 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-01 00:15:20,356 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-01 00:15:20,356 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-01 00:15:20,356 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-01 00:15:20,356 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-01 00:15:20,356 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-01 00:15:20,357 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-01 00:15:20,357 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-01 00:15:20,357 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-01 00:15:20,357 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-02-01 00:15:20,357 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-01 00:15:20,357 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-01 00:15:20,357 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-01 00:15:20,358 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2022-02-01 00:15:20,358 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-02-01 00:15:20,358 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=QVASR [2022-02-01 00:15:20,358 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-02-01 00:15:20,569 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-01 00:15:20,587 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-01 00:15:20,588 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-01 00:15:20,589 INFO L271 PluginConnector]: Initializing CDTParser... [2022-02-01 00:15:20,591 INFO L275 PluginConnector]: CDTParser initialized [2022-02-01 00:15:20,592 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-benchs/filter2_set.c [2022-02-01 00:15:20,638 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/66c8020c5/7d7fbb7f88a64d5bbf27bb3b653b24a4/FLAG1406c2655 [2022-02-01 00:15:20,984 INFO L306 CDTParser]: Found 1 translation units. [2022-02-01 00:15:20,984 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-benchs/filter2_set.c [2022-02-01 00:15:20,990 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/66c8020c5/7d7fbb7f88a64d5bbf27bb3b653b24a4/FLAG1406c2655 [2022-02-01 00:15:21,000 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/66c8020c5/7d7fbb7f88a64d5bbf27bb3b653b24a4 [2022-02-01 00:15:21,002 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-01 00:15:21,003 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-02-01 00:15:21,004 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-02-01 00:15:21,004 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-02-01 00:15:21,017 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-02-01 00:15:21,018 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.02 12:15:21" (1/1) ... [2022-02-01 00:15:21,019 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@60fcb71f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:15:21, skipping insertion in model container [2022-02-01 00:15:21,019 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.02 12:15:21" (1/1) ... [2022-02-01 00:15:21,024 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-02-01 00:15:21,038 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-02-01 00:15:21,183 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/float-benchs/filter2_set.c[664,677] [2022-02-01 00:15:21,219 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-01 00:15:21,229 INFO L203 MainTranslator]: Completed pre-run [2022-02-01 00:15:21,238 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/float-benchs/filter2_set.c[664,677] [2022-02-01 00:15:21,248 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-01 00:15:21,257 INFO L208 MainTranslator]: Completed translation [2022-02-01 00:15:21,258 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:15:21 WrapperNode [2022-02-01 00:15:21,258 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-02-01 00:15:21,259 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-01 00:15:21,259 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-01 00:15:21,259 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-01 00:15:21,278 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:15:21" (1/1) ... [2022-02-01 00:15:21,278 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:15:21" (1/1) ... [2022-02-01 00:15:21,283 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:15:21" (1/1) ... [2022-02-01 00:15:21,283 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:15:21" (1/1) ... [2022-02-01 00:15:21,287 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:15:21" (1/1) ... [2022-02-01 00:15:21,289 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:15:21" (1/1) ... [2022-02-01 00:15:21,290 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:15:21" (1/1) ... [2022-02-01 00:15:21,293 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-01 00:15:21,294 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-01 00:15:21,294 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-01 00:15:21,294 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-01 00:15:21,299 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:15:21" (1/1) ... [2022-02-01 00:15:21,309 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-01 00:15:21,320 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-01 00:15:21,331 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) [2022-02-01 00:15:21,349 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 [2022-02-01 00:15:21,361 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-02-01 00:15:21,364 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-01 00:15:21,364 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-02-01 00:15:21,364 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-02-01 00:15:21,364 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-02-01 00:15:21,364 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-02-01 00:15:21,365 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-02-01 00:15:21,365 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-02-01 00:15:21,365 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-02-01 00:15:21,365 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-02-01 00:15:21,365 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2022-02-01 00:15:21,365 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-02-01 00:15:21,365 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-02-01 00:15:21,365 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-02-01 00:15:21,365 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-02-01 00:15:21,366 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-02-01 00:15:21,366 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-01 00:15:21,366 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-02-01 00:15:21,366 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-02-01 00:15:21,366 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-02-01 00:15:21,417 INFO L234 CfgBuilder]: Building ICFG [2022-02-01 00:15:21,418 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-01 00:15:21,571 INFO L275 CfgBuilder]: Performing block encoding [2022-02-01 00:15:21,576 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-01 00:15:21,576 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-02-01 00:15:21,578 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.02 12:15:21 BoogieIcfgContainer [2022-02-01 00:15:21,578 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-01 00:15:21,579 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-01 00:15:21,579 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-01 00:15:21,582 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-01 00:15:21,582 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.02 12:15:21" (1/3) ... [2022-02-01 00:15:21,583 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18615735 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.02 12:15:21, skipping insertion in model container [2022-02-01 00:15:21,583 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:15:21" (2/3) ... [2022-02-01 00:15:21,583 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18615735 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.02 12:15:21, skipping insertion in model container [2022-02-01 00:15:21,583 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.02 12:15:21" (3/3) ... [2022-02-01 00:15:21,584 INFO L111 eAbstractionObserver]: Analyzing ICFG filter2_set.c [2022-02-01 00:15:21,594 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-02-01 00:15:21,595 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-02-01 00:15:21,674 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-01 00:15:21,686 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 [2022-02-01 00:15:21,686 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-02-01 00:15:21,697 INFO L276 IsEmpty]: Start isEmpty. Operand has 35 states, 18 states have (on average 1.2777777777777777) internal successors, (23), 19 states have internal predecessors, (23), 11 states have call successors, (11), 4 states have call predecessors, (11), 4 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2022-02-01 00:15:21,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-02-01 00:15:21,721 INFO L506 BasicCegarLoop]: Found error trace [2022-02-01 00:15:21,721 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-01 00:15:21,722 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-01 00:15:21,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-01 00:15:21,726 INFO L85 PathProgramCache]: Analyzing trace with hash 1002380111, now seen corresponding path program 1 times [2022-02-01 00:15:21,740 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-01 00:15:21,741 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2005620909] [2022-02-01 00:15:21,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-01 00:15:21,752 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-01 00:15:21,791 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-01 00:15:21,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-01 00:15:21,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-01 00:15:21,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-01 00:15:21,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-01 00:15:21,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-01 00:15:21,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-02-01 00:15:21,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-01 00:15:21,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-02-01 00:15:21,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-01 00:15:21,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-02-01 00:15:21,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-01 00:15:21,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-02-01 00:15:21,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-01 00:15:21,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-02-01 00:15:21,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-01 00:15:21,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-02-01 00:15:21,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-01 00:15:21,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-02-01 00:15:22,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-01 00:15:22,022 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2022-02-01 00:15:22,024 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-01 00:15:22,024 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2005620909] [2022-02-01 00:15:22,025 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [2005620909] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-01 00:15:22,025 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-01 00:15:22,025 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-02-01 00:15:22,026 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852427788] [2022-02-01 00:15:22,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-01 00:15:22,029 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-02-01 00:15:22,030 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-01 00:15:22,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-02-01 00:15:22,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-02-01 00:15:22,059 INFO L87 Difference]: Start difference. First operand has 35 states, 18 states have (on average 1.2777777777777777) internal successors, (23), 19 states have internal predecessors, (23), 11 states have call successors, (11), 4 states have call predecessors, (11), 4 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-02-01 00:15:22,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-01 00:15:22,146 INFO L93 Difference]: Finished difference Result 63 states and 91 transitions. [2022-02-01 00:15:22,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-02-01 00:15:22,149 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 54 [2022-02-01 00:15:22,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-01 00:15:22,157 INFO L225 Difference]: With dead ends: 63 [2022-02-01 00:15:22,157 INFO L226 Difference]: Without dead ends: 30 [2022-02-01 00:15:22,161 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-02-01 00:15:22,166 INFO L933 BasicCegarLoop]: 33 mSDtfsCounter, 17 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-01 00:15:22,167 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [26 Valid, 36 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-01 00:15:22,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2022-02-01 00:15:22,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2022-02-01 00:15:22,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 15 states have (on average 1.0666666666666667) internal successors, (16), 15 states have internal predecessors, (16), 11 states have call successors, (11), 4 states have call predecessors, (11), 3 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-02-01 00:15:22,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 37 transitions. [2022-02-01 00:15:22,211 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 37 transitions. Word has length 54 [2022-02-01 00:15:22,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-01 00:15:22,212 INFO L470 AbstractCegarLoop]: Abstraction has 30 states and 37 transitions. [2022-02-01 00:15:22,212 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-02-01 00:15:22,212 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 37 transitions. [2022-02-01 00:15:22,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-02-01 00:15:22,214 INFO L506 BasicCegarLoop]: Found error trace [2022-02-01 00:15:22,215 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-01 00:15:22,215 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-02-01 00:15:22,215 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-01 00:15:22,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-01 00:15:22,216 INFO L85 PathProgramCache]: Analyzing trace with hash 816713483, now seen corresponding path program 1 times [2022-02-01 00:15:22,216 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-01 00:15:22,217 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [210537845] [2022-02-01 00:15:22,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-01 00:15:22,218 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-01 00:15:22,220 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-01 00:15:22,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-01 00:15:22,258 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-02-01 00:15:22,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-01 00:15:22,325 INFO L133 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2022-02-01 00:15:22,326 INFO L628 BasicCegarLoop]: Counterexample is feasible [2022-02-01 00:15:22,328 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-02-01 00:15:22,329 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-02-01 00:15:22,333 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2022-02-01 00:15:22,336 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-02-01 00:15:22,348 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.02 12:15:22 BoogieIcfgContainer [2022-02-01 00:15:22,348 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-02-01 00:15:22,349 INFO L158 Benchmark]: Toolchain (without parser) took 1345.65ms. Allocated memory was 178.3MB in the beginning and 266.3MB in the end (delta: 88.1MB). Free memory was 122.8MB in the beginning and 188.6MB in the end (delta: -65.8MB). Peak memory consumption was 21.4MB. Max. memory is 8.0GB. [2022-02-01 00:15:22,349 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 178.3MB. Free memory is still 138.8MB. There was no memory consumed. Max. memory is 8.0GB. [2022-02-01 00:15:22,350 INFO L158 Benchmark]: CACSL2BoogieTranslator took 254.43ms. Allocated memory was 178.3MB in the beginning and 266.3MB in the end (delta: 88.1MB). Free memory was 122.6MB in the beginning and 239.4MB in the end (delta: -116.9MB). Peak memory consumption was 11.4MB. Max. memory is 8.0GB. [2022-02-01 00:15:22,350 INFO L158 Benchmark]: Boogie Preprocessor took 34.29ms. Allocated memory is still 266.3MB. Free memory was 238.9MB in the beginning and 237.9MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-02-01 00:15:22,351 INFO L158 Benchmark]: RCFGBuilder took 284.03ms. Allocated memory is still 266.3MB. Free memory was 237.4MB in the beginning and 225.3MB in the end (delta: 12.1MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2022-02-01 00:15:22,351 INFO L158 Benchmark]: TraceAbstraction took 768.94ms. Allocated memory is still 266.3MB. Free memory was 224.8MB in the beginning and 188.6MB in the end (delta: 36.2MB). Peak memory consumption was 35.7MB. Max. memory is 8.0GB. [2022-02-01 00:15:22,352 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 178.3MB. Free memory is still 138.8MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 254.43ms. Allocated memory was 178.3MB in the beginning and 266.3MB in the end (delta: 88.1MB). Free memory was 122.6MB in the beginning and 239.4MB in the end (delta: -116.9MB). Peak memory consumption was 11.4MB. Max. memory is 8.0GB. * Boogie Preprocessor took 34.29ms. Allocated memory is still 266.3MB. Free memory was 238.9MB in the beginning and 237.9MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 284.03ms. Allocated memory is still 266.3MB. Free memory was 237.4MB in the beginning and 225.3MB in the end (delta: 12.1MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * TraceAbstraction took 768.94ms. Allocated memory is still 266.3MB. Free memory was 224.8MB in the beginning and 188.6MB in the end (delta: 36.2MB). Peak memory consumption was 35.7MB. 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 - UnprovableResult [Line: 17]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 57, overapproximation of to_real at line 43, overapproximation of someBinaryArithmeticDOUBLEoperation at line 55. Possible FailurePath: [L22] double E, E0, E1, S0, S1, S; [L23] double A1, A2, A3, B1, B2; [L24] int i; [L26] A1 = __VERIFIER_nondet_double() [L27] A2 = __VERIFIER_nondet_double() [L28] A3 = __VERIFIER_nondet_double() [L29] B1 = __VERIFIER_nondet_double() [L30] B2 = __VERIFIER_nondet_double() [L31] CALL assume_abort_if_not(A1 >= 0.69 && A1 <= 0.71) [L15] COND FALSE !(!cond) [L31] RET assume_abort_if_not(A1 >= 0.69 && A1 <= 0.71) [L32] CALL assume_abort_if_not(A2 >= -1.31 && A2 <= -1.29) [L15] COND FALSE !(!cond) [L32] RET assume_abort_if_not(A2 >= -1.31 && A2 <= -1.29) [L33] CALL assume_abort_if_not(A3 >= 1.09 && A3 <= 1.11) [L15] COND FALSE !(!cond) [L33] RET assume_abort_if_not(A3 >= 1.09 && A3 <= 1.11) [L34] CALL assume_abort_if_not(B1 >= 1.39 && B1 <= 1.41) [L15] COND FALSE !(!cond) [L34] RET assume_abort_if_not(B1 >= 1.39 && B1 <= 1.41) [L35] CALL assume_abort_if_not(B2 >= -0.71 && B2 <= -0.69) [L15] COND FALSE !(!cond) [L35] RET assume_abort_if_not(B2 >= -0.71 && B2 <= -0.69) [L38] E = __VERIFIER_nondet_double() [L39] E0 = __VERIFIER_nondet_double() [L40] CALL assume_abort_if_not(E >= 0. && E <= 1.) [L15] COND FALSE !(!cond) [L40] RET assume_abort_if_not(E >= 0. && E <= 1.) [L41] CALL assume_abort_if_not(E0 >= 0. && E0 <= 1.) [L15] COND FALSE !(!cond) [L41] RET assume_abort_if_not(E0 >= 0. && E0 <= 1.) [L43] S0 = 0 [L44] S = 0 [L46] i = 0 [L46] COND TRUE i <= 1000000 [L47] E1 = E0 [L48] E0 = E [L50] E = __VERIFIER_nondet_double() [L51] CALL assume_abort_if_not(E >= 0. && E <= 1.) [L15] COND FALSE !(!cond) [L51] RET assume_abort_if_not(E >= 0. && E <= 1.) [L53] S1 = S0 [L54] S0 = S [L55] S = A1*E - E0*A2 + E1*A3 + S0*B1 + S1*B2 [L57] CALL __VERIFIER_assert(S >= -100. && S <= 100.) [L17] COND TRUE !(cond) [L17] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 38 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.7s, OverallIterations: 2, TraceHistogramMax: 8, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 26 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 17 mSDsluCounter, 36 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 3 mSDsCounter, 10 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 11 IncrementalHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 10 mSolverCounterUnsat, 33 mSDtfsCounter, 11 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 28 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=35occurred in iteration=0, InterpolantAutomatonStates: 3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-02-01 00:15:22,386 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...