/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -tc ../../../trunk/examples/toolchains/AutomizerC.xml -i ../sv-benchmarks/c/float-benchs/addsub_float_exact.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-02 00:41:35,453 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-02 00:41:35,455 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-02 00:41:35,483 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2023-04-02 00:41:35,539 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-04-02 00:41:35,571 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-02 00:41:35,571 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-02 00:41:35,571 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-02 00:41:35,572 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-02 00:41:35,573 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-02 00:41:35,573 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-02 00:41:35,573 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-04-02 00:41:35,574 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-04-02 00:41:35,574 INFO L138 SettingsManager]: * Use SBE=true [2023-04-02 00:41:35,574 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-02 00:41:35,575 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-02 00:41:35,575 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-02 00:41:35,575 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-02 00:41:35,575 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-02 00:41:35,575 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-02 00:41:35,575 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-02 00:41:35,576 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-02 00:41:35,576 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-02 00:41:35,576 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-02 00:41:35,576 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-02 00:41:35,576 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-02 00:41:35,576 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-02 00:41:35,576 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-04-02 00:41:35,577 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-02 00:41:35,577 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 00:41:35,577 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-02 00:41:35,577 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-02 00:41:35,577 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-02 00:41:35,577 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-04-02 00:41:35,577 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-02 00:41:35,578 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-04-02 00:41:35,578 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-02 00:41:35,578 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-04-02 00:41:35,578 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-04-02 00:41:35,578 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-04-02 00:41:35,578 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-04-02 00:41:35,820 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-02 00:41:35,837 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-02 00:41:35,839 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-02 00:41:35,840 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-02 00:41:35,840 INFO L275 PluginConnector]: CDTParser initialized [2023-04-02 00:41:35,841 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-benchs/addsub_float_exact.c [2023-04-02 00:41:36,958 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-02 00:41:37,118 INFO L351 CDTParser]: Found 1 translation units. [2023-04-02 00:41:37,119 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/addsub_float_exact.c [2023-04-02 00:41:37,127 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b8d7b1a75/9965e1a31a3e45688185b8c57b50954b/FLAG2ace7cc2c [2023-04-02 00:41:37,140 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b8d7b1a75/9965e1a31a3e45688185b8c57b50954b [2023-04-02 00:41:37,142 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-02 00:41:37,143 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-02 00:41:37,144 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-02 00:41:37,145 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-02 00:41:37,147 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-02 00:41:37,148 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 12:41:37" (1/1) ... [2023-04-02 00:41:37,149 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4342702 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 12:41:37, skipping insertion in model container [2023-04-02 00:41:37,149 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 12:41:37" (1/1) ... [2023-04-02 00:41:37,155 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-02 00:41:37,165 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-02 00:41:37,281 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/addsub_float_exact.c[392,405] [2023-04-02 00:41:37,290 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 00:41:37,300 INFO L203 MainTranslator]: Completed pre-run [2023-04-02 00:41:37,309 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/addsub_float_exact.c[392,405] [2023-04-02 00:41:37,311 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 00:41:37,323 INFO L208 MainTranslator]: Completed translation [2023-04-02 00:41:37,323 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 12:41:37 WrapperNode [2023-04-02 00:41:37,324 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-02 00:41:37,325 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-02 00:41:37,325 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-02 00:41:37,325 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-02 00:41:37,336 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 12:41:37" (1/1) ... [2023-04-02 00:41:37,337 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 12:41:37" (1/1) ... [2023-04-02 00:41:37,342 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 12:41:37" (1/1) ... [2023-04-02 00:41:37,342 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 12:41:37" (1/1) ... [2023-04-02 00:41:37,349 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 12:41:37" (1/1) ... [2023-04-02 00:41:37,350 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 12:41:37" (1/1) ... [2023-04-02 00:41:37,351 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 12:41:37" (1/1) ... [2023-04-02 00:41:37,352 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 12:41:37" (1/1) ... [2023-04-02 00:41:37,353 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-02 00:41:37,354 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-02 00:41:37,354 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-02 00:41:37,354 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-02 00:41:37,355 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 12:41:37" (1/1) ... [2023-04-02 00:41:37,360 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 00:41:37,372 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 00:41:37,390 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) [2023-04-02 00:41:37,405 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 [2023-04-02 00:41:37,424 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-02 00:41:37,425 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-02 00:41:37,425 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-02 00:41:37,425 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-04-02 00:41:37,425 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-02 00:41:37,425 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-02 00:41:37,425 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-02 00:41:37,426 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-02 00:41:37,426 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-02 00:41:37,426 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-04-02 00:41:37,426 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-02 00:41:37,426 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-02 00:41:37,426 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-02 00:41:37,426 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-02 00:41:37,426 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-02 00:41:37,426 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-02 00:41:37,426 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-02 00:41:37,476 INFO L236 CfgBuilder]: Building ICFG [2023-04-02 00:41:37,478 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-02 00:41:37,545 INFO L277 CfgBuilder]: Performing block encoding [2023-04-02 00:41:37,554 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-02 00:41:37,554 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-04-02 00:41:37,556 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 12:41:37 BoogieIcfgContainer [2023-04-02 00:41:37,556 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-02 00:41:37,577 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-02 00:41:37,578 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-02 00:41:37,581 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-02 00:41:37,581 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.04 12:41:37" (1/3) ... [2023-04-02 00:41:37,582 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7460bdc0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 12:41:37, skipping insertion in model container [2023-04-02 00:41:37,582 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 12:41:37" (2/3) ... [2023-04-02 00:41:37,582 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7460bdc0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 12:41:37, skipping insertion in model container [2023-04-02 00:41:37,582 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 12:41:37" (3/3) ... [2023-04-02 00:41:37,583 INFO L112 eAbstractionObserver]: Analyzing ICFG addsub_float_exact.c [2023-04-02 00:41:37,600 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-02 00:41:37,600 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-02 00:41:37,670 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-02 00:41:37,682 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@42a7c5fb, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-04-02 00:41:37,682 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-02 00:41:37,686 INFO L276 IsEmpty]: Start isEmpty. Operand has 18 states, 10 states have (on average 1.2) internal successors, (12), 11 states have internal predecessors, (12), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-04-02 00:41:37,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-04-02 00:41:37,693 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 00:41:37,693 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 00:41:37,694 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 00:41:37,698 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 00:41:37,699 INFO L85 PathProgramCache]: Analyzing trace with hash -579661053, now seen corresponding path program 1 times [2023-04-02 00:41:37,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 00:41:37,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [510517750] [2023-04-02 00:41:37,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 00:41:37,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 00:41:37,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-04-02 00:41:37,804 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-04-02 00:41:37,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-04-02 00:41:37,833 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-04-02 00:41:37,835 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-04-02 00:41:37,836 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-04-02 00:41:37,838 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-02 00:41:37,842 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-04-02 00:41:37,845 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-04-02 00:41:37,858 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.04 12:41:37 BoogieIcfgContainer [2023-04-02 00:41:37,858 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-04-02 00:41:37,859 INFO L158 Benchmark]: Toolchain (without parser) took 715.28ms. Allocated memory is still 278.9MB. Free memory was 235.2MB in the beginning and 200.2MB in the end (delta: 35.0MB). Peak memory consumption was 35.7MB. Max. memory is 8.0GB. [2023-04-02 00:41:37,859 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 177.2MB. Free memory is still 129.3MB. There was no memory consumed. Max. memory is 8.0GB. [2023-04-02 00:41:37,860 INFO L158 Benchmark]: CACSL2BoogieTranslator took 179.52ms. Allocated memory is still 278.9MB. Free memory was 234.8MB in the beginning and 225.0MB in the end (delta: 9.8MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. [2023-04-02 00:41:37,860 INFO L158 Benchmark]: Boogie Preprocessor took 28.34ms. Allocated memory is still 278.9MB. Free memory was 225.0MB in the beginning and 224.0MB in the end (delta: 1.1MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-04-02 00:41:37,861 INFO L158 Benchmark]: RCFGBuilder took 202.97ms. Allocated memory is still 278.9MB. Free memory was 223.7MB in the beginning and 214.2MB in the end (delta: 9.4MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. [2023-04-02 00:41:37,861 INFO L158 Benchmark]: TraceAbstraction took 280.61ms. Allocated memory is still 278.9MB. Free memory was 213.5MB in the beginning and 200.2MB in the end (delta: 13.3MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. [2023-04-02 00:41:37,865 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 177.2MB. Free memory is still 129.3MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 179.52ms. Allocated memory is still 278.9MB. Free memory was 234.8MB in the beginning and 225.0MB in the end (delta: 9.8MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. * Boogie Preprocessor took 28.34ms. Allocated memory is still 278.9MB. Free memory was 225.0MB in the beginning and 224.0MB in the end (delta: 1.1MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 202.97ms. Allocated memory is still 278.9MB. Free memory was 223.7MB in the beginning and 214.2MB in the end (delta: 9.4MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. * TraceAbstraction took 280.61ms. Allocated memory is still 278.9MB. Free memory was 213.5MB in the beginning and 200.2MB in the end (delta: 13.3MB). Peak memory consumption was 13.6MB. 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: 6]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 16, overapproximation of someBinaryArithmeticFLOAToperation at line 13. Possible FailurePath: [L10] float x, y, z, r; [L12] x = 1e7f [L13] y = x + 1.f [L14] z = x - 1.f [L15] r = y - z VAL [x=10000000] [L16] CALL __VERIFIER_assert(r == 2.f) VAL [\old(cond)=0] [L6] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L6] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 21 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.2s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=18occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 10 NumberOfCodeBlocks, 10 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, 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 [2023-04-02 00:41:37,882 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...