/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/float-benchs/zonotope_loose.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-d966a43 [2022-01-31 22:56:40,100 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-31 22:56:40,102 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-31 22:56:40,138 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-31 22:56:40,138 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-31 22:56:40,141 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-31 22:56:40,142 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-31 22:56:40,146 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-31 22:56:40,147 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-31 22:56:40,152 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-31 22:56:40,152 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-31 22:56:40,153 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-31 22:56:40,153 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-31 22:56:40,153 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-31 22:56:40,154 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-31 22:56:40,154 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-31 22:56:40,155 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-31 22:56:40,155 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-31 22:56:40,156 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-31 22:56:40,157 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-31 22:56:40,158 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-31 22:56:40,160 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-31 22:56:40,163 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-31 22:56:40,164 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-31 22:56:40,170 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-31 22:56:40,170 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-31 22:56:40,170 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-31 22:56:40,171 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-31 22:56:40,171 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-31 22:56:40,172 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-31 22:56:40,172 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-31 22:56:40,172 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-31 22:56:40,173 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-31 22:56:40,173 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-31 22:56:40,174 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-31 22:56:40,174 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-31 22:56:40,174 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-31 22:56:40,174 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-31 22:56:40,174 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-31 22:56:40,175 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-31 22:56:40,175 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-31 22:56:40,179 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf [2022-01-31 22:56:40,188 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-31 22:56:40,189 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-31 22:56:40,190 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-31 22:56:40,190 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-31 22:56:40,190 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-31 22:56:40,190 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-31 22:56:40,190 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-31 22:56:40,190 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-31 22:56:40,190 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-31 22:56:40,191 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-31 22:56:40,191 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-31 22:56:40,191 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-31 22:56:40,191 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-31 22:56:40,192 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-31 22:56:40,192 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-31 22:56:40,192 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-31 22:56:40,192 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-31 22:56:40,192 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-31 22:56:40,192 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-31 22:56:40,192 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-31 22:56:40,192 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2022-01-31 22:56:40,192 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-31 22:56:40,192 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=JORDAN [2022-01-31 22:56:40,192 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-31 22:56:40,379 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-31 22:56:40,393 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-31 22:56:40,394 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-31 22:56:40,395 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-31 22:56:40,397 INFO L275 PluginConnector]: CDTParser initialized [2022-01-31 22:56:40,397 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-benchs/zonotope_loose.c.v+cfa-reducer.c [2022-01-31 22:56:40,434 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/276d83892/f23c5269cb96432d9eb612f22670e674/FLAG92db45a9f [2022-01-31 22:56:40,775 INFO L306 CDTParser]: Found 1 translation units. [2022-01-31 22:56:40,776 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-benchs/zonotope_loose.c.v+cfa-reducer.c [2022-01-31 22:56:40,783 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/276d83892/f23c5269cb96432d9eb612f22670e674/FLAG92db45a9f [2022-01-31 22:56:41,211 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/276d83892/f23c5269cb96432d9eb612f22670e674 [2022-01-31 22:56:41,213 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-31 22:56:41,214 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-01-31 22:56:41,215 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-31 22:56:41,215 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-31 22:56:41,218 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-31 22:56:41,218 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 10:56:41" (1/1) ... [2022-01-31 22:56:41,219 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6de896a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:56:41, skipping insertion in model container [2022-01-31 22:56:41,219 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 10:56:41" (1/1) ... [2022-01-31 22:56:41,224 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-31 22:56:41,234 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-31 22:56:41,386 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/zonotope_loose.c.v+cfa-reducer.c[1094,1107] [2022-01-31 22:56:41,391 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-31 22:56:41,397 INFO L203 MainTranslator]: Completed pre-run [2022-01-31 22:56:41,411 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/zonotope_loose.c.v+cfa-reducer.c[1094,1107] [2022-01-31 22:56:41,413 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-31 22:56:41,423 INFO L208 MainTranslator]: Completed translation [2022-01-31 22:56:41,423 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:56:41 WrapperNode [2022-01-31 22:56:41,424 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-31 22:56:41,424 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-31 22:56:41,424 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-31 22:56:41,425 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-31 22:56:41,432 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:56:41" (1/1) ... [2022-01-31 22:56:41,433 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:56:41" (1/1) ... [2022-01-31 22:56:41,437 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:56:41" (1/1) ... [2022-01-31 22:56:41,437 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:56:41" (1/1) ... [2022-01-31 22:56:41,450 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:56:41" (1/1) ... [2022-01-31 22:56:41,454 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:56:41" (1/1) ... [2022-01-31 22:56:41,458 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:56:41" (1/1) ... [2022-01-31 22:56:41,460 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-31 22:56:41,461 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-31 22:56:41,461 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-31 22:56:41,461 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-31 22:56:41,462 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:56:41" (1/1) ... [2022-01-31 22:56:41,467 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-31 22:56:41,480 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 22:56:41,489 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) [2022-01-31 22:56:41,508 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 [2022-01-31 22:56:41,523 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-01-31 22:56:41,523 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-31 22:56:41,523 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-01-31 22:56:41,523 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-01-31 22:56:41,524 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-01-31 22:56:41,524 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-01-31 22:56:41,524 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-01-31 22:56:41,524 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-01-31 22:56:41,524 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-31 22:56:41,524 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2022-01-31 22:56:41,524 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-01-31 22:56:41,525 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-01-31 22:56:41,525 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-01-31 22:56:41,525 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-01-31 22:56:41,525 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-31 22:56:41,526 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-31 22:56:41,526 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-01-31 22:56:41,526 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-01-31 22:56:41,526 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-31 22:56:41,574 INFO L234 CfgBuilder]: Building ICFG [2022-01-31 22:56:41,575 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-31 22:56:41,688 INFO L275 CfgBuilder]: Performing block encoding [2022-01-31 22:56:41,691 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-31 22:56:41,692 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-01-31 22:56:41,693 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 10:56:41 BoogieIcfgContainer [2022-01-31 22:56:41,693 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-31 22:56:41,694 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-31 22:56:41,694 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-31 22:56:41,703 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-31 22:56:41,704 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.01 10:56:41" (1/3) ... [2022-01-31 22:56:41,704 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e58a30 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 10:56:41, skipping insertion in model container [2022-01-31 22:56:41,704 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:56:41" (2/3) ... [2022-01-31 22:56:41,704 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e58a30 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 10:56:41, skipping insertion in model container [2022-01-31 22:56:41,705 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 10:56:41" (3/3) ... [2022-01-31 22:56:41,705 INFO L111 eAbstractionObserver]: Analyzing ICFG zonotope_loose.c.v+cfa-reducer.c [2022-01-31 22:56:41,708 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-01-31 22:56:41,709 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-31 22:56:41,738 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-31 22:56:41,743 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=JORDAN [2022-01-31 22:56:41,743 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-31 22:56:41,759 INFO L276 IsEmpty]: Start isEmpty. Operand has 22 states, 16 states have (on average 1.5) internal successors, (24), 17 states have internal predecessors, (24), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-01-31 22:56:41,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-01-31 22:56:41,764 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:56:41,764 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:56:41,764 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:56:41,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:56:41,768 INFO L85 PathProgramCache]: Analyzing trace with hash 850423741, now seen corresponding path program 1 times [2022-01-31 22:56:41,773 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:56:41,773 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1155815534] [2022-01-31 22:56:41,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:56:41,781 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:56:41,814 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:56:41,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:56:41,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:56:41,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:56:41,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 22:56:41,993 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:56:41,993 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1155815534] [2022-01-31 22:56:41,994 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1155815534] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:56:41,995 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:56:41,995 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-31 22:56:41,995 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787239382] [2022-01-31 22:56:41,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:56:41,998 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-31 22:56:41,998 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:56:42,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-31 22:56:42,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-31 22:56:42,020 INFO L87 Difference]: Start difference. First operand has 22 states, 16 states have (on average 1.5) internal successors, (24), 17 states have internal predecessors, (24), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:42,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:56:42,165 INFO L93 Difference]: Finished difference Result 34 states and 40 transitions. [2022-01-31 22:56:42,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-31 22:56:42,167 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2022-01-31 22:56:42,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:56:42,175 INFO L225 Difference]: With dead ends: 34 [2022-01-31 22:56:42,175 INFO L226 Difference]: Without dead ends: 18 [2022-01-31 22:56:42,177 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-01-31 22:56:42,182 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 39 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 22:56:42,182 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [39 Valid, 49 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 22:56:42,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2022-01-31 22:56:42,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2022-01-31 22:56:42,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 14 states have (on average 1.1428571428571428) internal successors, (16), 14 states have internal predecessors, (16), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:42,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2022-01-31 22:56:42,207 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 16 [2022-01-31 22:56:42,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:56:42,207 INFO L470 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2022-01-31 22:56:42,208 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:56:42,208 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2022-01-31 22:56:42,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-01-31 22:56:42,208 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:56:42,208 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:56:42,209 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-31 22:56:42,210 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:56:42,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:56:42,211 INFO L85 PathProgramCache]: Analyzing trace with hash 865527778, now seen corresponding path program 1 times [2022-01-31 22:56:42,211 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:56:42,211 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [837070779] [2022-01-31 22:56:42,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:56:42,213 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:56:42,216 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:56:42,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-01-31 22:56:42,229 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-01-31 22:56:42,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-01-31 22:56:42,246 INFO L133 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2022-01-31 22:56:42,246 INFO L628 BasicCegarLoop]: Counterexample is feasible [2022-01-31 22:56:42,248 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location mainErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-01-31 22:56:42,249 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-31 22:56:42,251 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2022-01-31 22:56:42,253 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-01-31 22:56:42,260 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.01 10:56:42 BoogieIcfgContainer [2022-01-31 22:56:42,260 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-01-31 22:56:42,261 INFO L158 Benchmark]: Toolchain (without parser) took 1045.96ms. Allocated memory is still 206.6MB. Free memory was 157.4MB in the beginning and 139.2MB in the end (delta: 18.2MB). Peak memory consumption was 18.7MB. Max. memory is 8.0GB. [2022-01-31 22:56:42,261 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 206.6MB. Free memory was 173.8MB in the beginning and 173.6MB in the end (delta: 139.8kB). There was no memory consumed. Max. memory is 8.0GB. [2022-01-31 22:56:42,261 INFO L158 Benchmark]: CACSL2BoogieTranslator took 208.55ms. Allocated memory is still 206.6MB. Free memory was 157.3MB in the beginning and 183.8MB in the end (delta: -26.5MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. [2022-01-31 22:56:42,262 INFO L158 Benchmark]: Boogie Preprocessor took 35.83ms. Allocated memory is still 206.6MB. Free memory was 183.8MB in the beginning and 182.0MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-01-31 22:56:42,262 INFO L158 Benchmark]: RCFGBuilder took 232.10ms. Allocated memory is still 206.6MB. Free memory was 182.0MB in the beginning and 171.7MB in the end (delta: 10.3MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2022-01-31 22:56:42,262 INFO L158 Benchmark]: TraceAbstraction took 566.24ms. Allocated memory is still 206.6MB. Free memory was 171.2MB in the beginning and 139.2MB in the end (delta: 32.0MB). Peak memory consumption was 32.5MB. Max. memory is 8.0GB. [2022-01-31 22:56:42,264 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 206.6MB. Free memory was 173.8MB in the beginning and 173.6MB in the end (delta: 139.8kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 208.55ms. Allocated memory is still 206.6MB. Free memory was 157.3MB in the beginning and 183.8MB in the end (delta: -26.5MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. * Boogie Preprocessor took 35.83ms. Allocated memory is still 206.6MB. Free memory was 183.8MB in the beginning and 182.0MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 232.10ms. Allocated memory is still 206.6MB. Free memory was 182.0MB in the beginning and 171.7MB in the end (delta: 10.3MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * TraceAbstraction took 566.24ms. Allocated memory is still 206.6MB. Free memory was 171.2MB in the beginning and 139.2MB in the end (delta: 32.0MB). Peak memory consumption was 32.5MB. 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: 45]: 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 32, overapproximation of someBinaryArithmeticDOUBLEoperation at line 29. Possible FailurePath: [L1] int __return_main; [L12] int __return_76; [L15] double main__x; [L16] double main__y; [L17] main__x = __VERIFIER_nondet_double() [L18] int main____CPAchecker_TMP_0; [L19] COND TRUE main__x >= 0.0 [L21] COND TRUE main__x <= 10.0 [L23] main____CPAchecker_TMP_0 = 1 [L24] COND TRUE main____CPAchecker_TMP_0 != 0 [L26] main__y = (main__x * main__x) - main__x [L27] COND TRUE main__y >= 0 [L29] main__y = main__x / 10.0 [L31] int main____CPAchecker_TMP_1; [L32] COND FALSE !(main__y >= 0.0) [L58] main____CPAchecker_TMP_1 = 0 [L39] int __tmp_1; [L40] __tmp_1 = main____CPAchecker_TMP_1 [L41] int __VERIFIER_assert__cond; [L42] __VERIFIER_assert__cond = __tmp_1 [L43] COND TRUE __VERIFIER_assert__cond == 0 [L45] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 29 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.5s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 39 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 39 mSDsluCounter, 49 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 26 mSDsCounter, 6 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 53 IncrementalHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 6 mSolverCounterUnsat, 23 mSDtfsCounter, 53 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=22occurred in iteration=0, InterpolantAutomatonStates: 8, 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 [2022-01-31 22:56:42,288 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...