/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/floats-cbmc-regression/float2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-d966a43 [2022-02-01 00:14:01,273 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-01 00:14:01,274 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-01 00:14:01,356 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-02-01 00:14:01,356 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-02-01 00:14:01,357 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-02-01 00:14:01,358 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-02-01 00:14:01,364 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-02-01 00:14:01,365 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-02-01 00:14:01,366 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-02-01 00:14:01,367 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-02-01 00:14:01,367 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-02-01 00:14:01,368 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-02-01 00:14:01,368 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-02-01 00:14:01,387 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-02-01 00:14:01,390 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-02-01 00:14:01,390 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-02-01 00:14:01,394 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-02-01 00:14:01,396 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-02-01 00:14:01,397 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-02-01 00:14:01,398 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-02-01 00:14:01,401 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-02-01 00:14:01,402 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-02-01 00:14:01,403 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-02-01 00:14:01,409 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-02-01 00:14:01,414 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-02-01 00:14:01,415 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-02-01 00:14:01,416 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-02-01 00:14:01,420 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 00:14:01,431 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-01 00:14:01,431 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-01 00:14:01,433 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-01 00:14:01,433 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-02-01 00:14:01,433 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-01 00:14:01,433 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-01 00:14:01,433 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-01 00:14:01,433 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-01 00:14:01,433 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-01 00:14:01,433 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-01 00:14:01,434 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-01 00:14:01,434 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-01 00:14:01,434 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-01 00:14:01,434 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-02-01 00:14:01,434 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-01 00:14:01,434 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-01 00:14:01,434 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-01 00:14:01,435 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2022-02-01 00:14:01,435 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-02-01 00:14:01,435 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=QVASR [2022-02-01 00:14:01,435 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-02-01 00:14:01,645 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-01 00:14:01,667 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-01 00:14:01,669 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-01 00:14:01,670 INFO L271 PluginConnector]: Initializing CDTParser... [2022-02-01 00:14:01,671 INFO L275 PluginConnector]: CDTParser initialized [2022-02-01 00:14:01,672 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/floats-cbmc-regression/float2.c [2022-02-01 00:14:01,741 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8f90b165e/fb793bb881b3459399108693ee5f671c/FLAG3b5c0ecd1 [2022-02-01 00:14:02,099 INFO L306 CDTParser]: Found 1 translation units. [2022-02-01 00:14:02,100 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/floats-cbmc-regression/float2.c [2022-02-01 00:14:02,104 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8f90b165e/fb793bb881b3459399108693ee5f671c/FLAG3b5c0ecd1 [2022-02-01 00:14:02,535 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8f90b165e/fb793bb881b3459399108693ee5f671c [2022-02-01 00:14:02,537 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-01 00:14:02,538 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-02-01 00:14:02,539 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-02-01 00:14:02,540 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-02-01 00:14:02,542 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-02-01 00:14:02,542 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.02 12:14:02" (1/1) ... [2022-02-01 00:14:02,543 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44b9a529 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:14:02, skipping insertion in model container [2022-02-01 00:14:02,543 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.02 12:14:02" (1/1) ... [2022-02-01 00:14:02,547 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-02-01 00:14:02,562 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-02-01 00:14:02,672 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/floats-cbmc-regression/float2.c[366,379] [2022-02-01 00:14:02,674 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/floats-cbmc-regression/float2.c[420,433] [2022-02-01 00:14:02,675 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/floats-cbmc-regression/float2.c[493,506] [2022-02-01 00:14:02,675 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/floats-cbmc-regression/float2.c[557,570] [2022-02-01 00:14:02,676 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-01 00:14:02,682 INFO L203 MainTranslator]: Completed pre-run [2022-02-01 00:14:02,691 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/floats-cbmc-regression/float2.c[366,379] [2022-02-01 00:14:02,691 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/floats-cbmc-regression/float2.c[420,433] [2022-02-01 00:14:02,692 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/floats-cbmc-regression/float2.c[493,506] [2022-02-01 00:14:02,692 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/floats-cbmc-regression/float2.c[557,570] [2022-02-01 00:14:02,692 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-01 00:14:02,700 INFO L208 MainTranslator]: Completed translation [2022-02-01 00:14:02,701 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:14:02 WrapperNode [2022-02-01 00:14:02,701 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-02-01 00:14:02,702 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-01 00:14:02,702 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-01 00:14:02,702 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-01 00:14:02,708 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:14:02" (1/1) ... [2022-02-01 00:14:02,709 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:14:02" (1/1) ... [2022-02-01 00:14:02,713 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:14:02" (1/1) ... [2022-02-01 00:14:02,713 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:14:02" (1/1) ... [2022-02-01 00:14:02,716 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:14:02" (1/1) ... [2022-02-01 00:14:02,717 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:14:02" (1/1) ... [2022-02-01 00:14:02,718 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:14:02" (1/1) ... [2022-02-01 00:14:02,718 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-01 00:14:02,719 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-01 00:14:02,719 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-01 00:14:02,719 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-01 00:14:02,720 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:14:02" (1/1) ... [2022-02-01 00:14:02,724 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-01 00:14:02,731 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-01 00:14:02,752 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 00:14:02,754 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 00:14:02,778 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-02-01 00:14:02,778 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-01 00:14:02,778 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-02-01 00:14:02,778 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-02-01 00:14:02,778 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-02-01 00:14:02,778 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-02-01 00:14:02,778 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-02-01 00:14:02,778 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-02-01 00:14:02,778 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-02-01 00:14:02,778 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-02-01 00:14:02,778 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-02-01 00:14:02,778 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-01 00:14:02,779 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-02-01 00:14:02,779 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-02-01 00:14:02,779 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-02-01 00:14:02,822 INFO L234 CfgBuilder]: Building ICFG [2022-02-01 00:14:02,823 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-01 00:14:02,925 INFO L275 CfgBuilder]: Performing block encoding [2022-02-01 00:14:02,930 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-01 00:14:02,930 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-02-01 00:14:02,931 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.02 12:14:02 BoogieIcfgContainer [2022-02-01 00:14:02,931 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-01 00:14:02,932 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-01 00:14:02,933 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-01 00:14:02,953 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-01 00:14:02,953 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.02 12:14:02" (1/3) ... [2022-02-01 00:14:02,953 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64996548 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.02 12:14:02, skipping insertion in model container [2022-02-01 00:14:02,954 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:14:02" (2/3) ... [2022-02-01 00:14:02,954 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64996548 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.02 12:14:02, skipping insertion in model container [2022-02-01 00:14:02,954 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.02 12:14:02" (3/3) ... [2022-02-01 00:14:02,955 INFO L111 eAbstractionObserver]: Analyzing ICFG float2.c [2022-02-01 00:14:02,958 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-02-01 00:14:02,958 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2022-02-01 00:14:03,034 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-01 00:14:03,051 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 00:14:03,051 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-02-01 00:14:03,067 INFO L276 IsEmpty]: Start isEmpty. Operand has 25 states, 16 states have (on average 1.5) internal successors, (24), 20 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) [2022-02-01 00:14:03,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-02-01 00:14:03,072 INFO L506 BasicCegarLoop]: Found error trace [2022-02-01 00:14:03,072 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-02-01 00:14:03,073 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-01 00:14:03,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-01 00:14:03,082 INFO L85 PathProgramCache]: Analyzing trace with hash -529380357, now seen corresponding path program 1 times [2022-02-01 00:14:03,088 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-01 00:14:03,089 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1984632495] [2022-02-01 00:14:03,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-01 00:14:03,100 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-01 00:14:03,134 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-01 00:14:03,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-01 00:14:03,168 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-02-01 00:14:03,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-01 00:14:03,197 INFO L133 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2022-02-01 00:14:03,198 INFO L628 BasicCegarLoop]: Counterexample is feasible [2022-02-01 00:14:03,201 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location mainErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2022-02-01 00:14:03,202 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr1ASSERT_VIOLATIONERROR_FUNCTION (2 of 4 remaining) [2022-02-01 00:14:03,203 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr2ASSERT_VIOLATIONERROR_FUNCTION (1 of 4 remaining) [2022-02-01 00:14:03,204 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr3ASSERT_VIOLATIONERROR_FUNCTION (0 of 4 remaining) [2022-02-01 00:14:03,204 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-02-01 00:14:03,207 INFO L732 BasicCegarLoop]: Path program histogram: [1] [2022-02-01 00:14:03,210 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-02-01 00:14:03,217 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.02 12:14:03 BoogieIcfgContainer [2022-02-01 00:14:03,218 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-02-01 00:14:03,218 INFO L158 Benchmark]: Toolchain (without parser) took 679.94ms. Allocated memory is still 211.8MB. Free memory was 166.1MB in the beginning and 168.4MB in the end (delta: -2.3MB). There was no memory consumed. Max. memory is 8.0GB. [2022-02-01 00:14:03,219 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 211.8MB. Free memory is still 182.3MB. There was no memory consumed. Max. memory is 8.0GB. [2022-02-01 00:14:03,220 INFO L158 Benchmark]: CACSL2BoogieTranslator took 161.74ms. Allocated memory is still 211.8MB. Free memory was 166.0MB in the beginning and 193.0MB in the end (delta: -27.0MB). Peak memory consumption was 5.6MB. Max. memory is 8.0GB. [2022-02-01 00:14:03,221 INFO L158 Benchmark]: Boogie Preprocessor took 16.89ms. Allocated memory is still 211.8MB. Free memory was 193.0MB in the beginning and 191.5MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-02-01 00:14:03,224 INFO L158 Benchmark]: RCFGBuilder took 212.44ms. Allocated memory is still 211.8MB. Free memory was 191.5MB in the beginning and 181.5MB in the end (delta: 10.0MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. [2022-02-01 00:14:03,224 INFO L158 Benchmark]: TraceAbstraction took 285.19ms. Allocated memory is still 211.8MB. Free memory was 181.0MB in the beginning and 168.4MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2022-02-01 00:14:03,227 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 211.8MB. Free memory is still 182.3MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 161.74ms. Allocated memory is still 211.8MB. Free memory was 166.0MB in the beginning and 193.0MB in the end (delta: -27.0MB). Peak memory consumption was 5.6MB. Max. memory is 8.0GB. * Boogie Preprocessor took 16.89ms. Allocated memory is still 211.8MB. Free memory was 193.0MB in the beginning and 191.5MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 212.44ms. Allocated memory is still 211.8MB. Free memory was 191.5MB in the beginning and 181.5MB in the end (delta: 10.0MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. * TraceAbstraction took 285.19ms. Allocated memory is still 211.8MB. Free memory was 181.0MB in the beginning and 168.4MB in the end (delta: 12.6MB). 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: 12]: 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 12. Possible FailurePath: [L7] float a; [L8] double b; [L11] a=1.25L [L12] COND TRUE !(a==1.25) [L12] reach_error() - UnprovableResult [Line: 15]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 19]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 23]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 28 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 0.2s, 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=25occurred 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 [2022-02-01 00:14:03,263 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...