/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/cast_union_loose.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-02 00:41:41,473 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-02 00:41:41,475 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-02 00:41:41,500 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2023-04-02 00:41:41,555 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 00:41:41,586 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-02 00:41:41,586 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-02 00:41:41,586 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-02 00:41:41,587 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-02 00:41:41,587 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-02 00:41:41,587 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-02 00:41:41,588 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-04-02 00:41:41,588 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-04-02 00:41:41,588 INFO L138 SettingsManager]: * Use SBE=true [2023-04-02 00:41:41,588 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-02 00:41:41,588 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-02 00:41:41,588 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-02 00:41:41,593 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-02 00:41:41,593 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-02 00:41:41,593 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-02 00:41:41,593 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-02 00:41:41,593 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-02 00:41:41,593 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-02 00:41:41,593 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-02 00:41:41,593 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-02 00:41:41,594 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-02 00:41:41,594 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-02 00:41:41,594 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-04-02 00:41:41,594 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-02 00:41:41,594 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 00:41:41,595 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-02 00:41:41,595 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-02 00:41:41,595 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-02 00:41:41,596 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-04-02 00:41:41,596 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-02 00:41:41,596 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-04-02 00:41:41,596 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-02 00:41:41,596 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-04-02 00:41:41,596 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-04-02 00:41:41,597 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-04-02 00:41:41,597 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-04-02 00:41:41,779 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-02 00:41:41,798 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-02 00:41:41,800 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-02 00:41:41,801 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-02 00:41:41,801 INFO L275 PluginConnector]: CDTParser initialized [2023-04-02 00:41:41,802 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-benchs/cast_union_loose.c [2023-04-02 00:41:42,965 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-02 00:41:43,146 INFO L351 CDTParser]: Found 1 translation units. [2023-04-02 00:41:43,147 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/cast_union_loose.c [2023-04-02 00:41:43,152 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b27f6090c/16b8d825550d4af7a3cc89cd29f35da1/FLAG9a98c2664 [2023-04-02 00:41:43,164 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b27f6090c/16b8d825550d4af7a3cc89cd29f35da1 [2023-04-02 00:41:43,167 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-02 00:41:43,168 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-02 00:41:43,169 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-02 00:41:43,169 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-02 00:41:43,172 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-02 00:41:43,173 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 12:41:43" (1/1) ... [2023-04-02 00:41:43,173 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72b31002 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 12:41:43, skipping insertion in model container [2023-04-02 00:41:43,174 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 12:41:43" (1/1) ... [2023-04-02 00:41:43,180 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-02 00:41:43,191 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-02 00:41:43,303 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/cast_union_loose.c[582,595] [2023-04-02 00:41:43,317 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 00:41:43,329 INFO L203 MainTranslator]: Completed pre-run [2023-04-02 00:41:43,340 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/cast_union_loose.c[582,595] [2023-04-02 00:41:43,347 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 00:41:43,359 INFO L208 MainTranslator]: Completed translation [2023-04-02 00:41:43,359 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 12:41:43 WrapperNode [2023-04-02 00:41:43,359 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-02 00:41:43,360 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-02 00:41:43,360 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-02 00:41:43,360 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-02 00:41:43,370 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 12:41:43" (1/1) ... [2023-04-02 00:41:43,370 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 12:41:43" (1/1) ... [2023-04-02 00:41:43,388 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 12:41:43" (1/1) ... [2023-04-02 00:41:43,388 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 12:41:43" (1/1) ... [2023-04-02 00:41:43,395 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 12:41:43" (1/1) ... [2023-04-02 00:41:43,397 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 12:41:43" (1/1) ... [2023-04-02 00:41:43,398 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 12:41:43" (1/1) ... [2023-04-02 00:41:43,399 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 12:41:43" (1/1) ... [2023-04-02 00:41:43,401 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-02 00:41:43,402 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-02 00:41:43,402 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-02 00:41:43,402 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-02 00:41:43,402 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 12:41:43" (1/1) ... [2023-04-02 00:41:43,408 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 00:41:43,417 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 00:41:43,429 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 00:41:43,430 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 00:41:43,465 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-02 00:41:43,465 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-02 00:41:43,467 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-02 00:41:43,467 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-04-02 00:41:43,467 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-04-02 00:41:43,467 INFO L138 BoogieDeclarations]: Found implementation of procedure cast [2023-04-02 00:41:43,468 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-02 00:41:43,468 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-02 00:41:43,468 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-02 00:41:43,468 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-02 00:41:43,471 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-02 00:41:43,471 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-04-02 00:41:43,471 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-04-02 00:41:43,472 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-04-02 00:41:43,472 INFO L130 BoogieDeclarations]: Found specification of procedure cast [2023-04-02 00:41:43,472 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-04-02 00:41:43,472 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-02 00:41:43,472 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-02 00:41:43,473 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2023-04-02 00:41:43,473 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-02 00:41:43,473 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-02 00:41:43,473 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-02 00:41:43,473 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-02 00:41:43,473 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-02 00:41:43,473 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2023-04-02 00:41:43,531 INFO L236 CfgBuilder]: Building ICFG [2023-04-02 00:41:43,533 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-02 00:41:43,655 INFO L277 CfgBuilder]: Performing block encoding [2023-04-02 00:41:43,663 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-02 00:41:43,664 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-04-02 00:41:43,665 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 12:41:43 BoogieIcfgContainer [2023-04-02 00:41:43,666 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-02 00:41:43,668 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-02 00:41:43,668 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-02 00:41:43,671 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-02 00:41:43,671 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.04 12:41:43" (1/3) ... [2023-04-02 00:41:43,672 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7962972d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 12:41:43, skipping insertion in model container [2023-04-02 00:41:43,672 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 12:41:43" (2/3) ... [2023-04-02 00:41:43,672 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7962972d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 12:41:43, skipping insertion in model container [2023-04-02 00:41:43,672 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 12:41:43" (3/3) ... [2023-04-02 00:41:43,673 INFO L112 eAbstractionObserver]: Analyzing ICFG cast_union_loose.c [2023-04-02 00:41:43,694 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-02 00:41:43,694 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-02 00:41:43,740 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-02 00:41:43,750 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;@80ee284, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-04-02 00:41:43,751 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-02 00:41:43,754 INFO L276 IsEmpty]: Start isEmpty. Operand has 32 states, 20 states have (on average 1.3) internal successors, (26), 21 states have internal predecessors, (26), 5 states have call successors, (5), 5 states have call predecessors, (5), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-04-02 00:41:43,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-04-02 00:41:43,760 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 00:41:43,760 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 00:41:43,761 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 00:41:43,764 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 00:41:43,764 INFO L85 PathProgramCache]: Analyzing trace with hash 688957007, now seen corresponding path program 1 times [2023-04-02 00:41:43,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 00:41:43,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838377556] [2023-04-02 00:41:43,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 00:41:43,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 00:41:43,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 00:41:43,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 00:41:43,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 00:41:44,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 00:41:44,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 00:41:44,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-04-02 00:41:44,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 00:41:44,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 00:41:44,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 00:41:44,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1838377556] [2023-04-02 00:41:44,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1838377556] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 00:41:44,120 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 00:41:44,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 00:41:44,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142478605] [2023-04-02 00:41:44,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 00:41:44,138 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 00:41:44,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 00:41:44,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 00:41:44,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 00:41:44,183 INFO L87 Difference]: Start difference. First operand has 32 states, 20 states have (on average 1.3) internal successors, (26), 21 states have internal predecessors, (26), 5 states have call successors, (5), 5 states have call predecessors, (5), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 2 states have internal predecessors, (14), 2 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-04-02 00:41:44,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 00:41:44,360 INFO L93 Difference]: Finished difference Result 55 states and 63 transitions. [2023-04-02 00:41:44,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-02 00:41:44,368 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 2 states have internal predecessors, (14), 2 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 22 [2023-04-02 00:41:44,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 00:41:44,374 INFO L225 Difference]: With dead ends: 55 [2023-04-02 00:41:44,374 INFO L226 Difference]: Without dead ends: 25 [2023-04-02 00:41:44,377 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-04-02 00:41:44,379 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 33 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-02 00:41:44,380 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 7 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-02 00:41:44,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2023-04-02 00:41:44,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2023-04-02 00:41:44,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 16 states have (on average 1.1875) internal successors, (19), 16 states have internal predecessors, (19), 5 states have call successors, (5), 5 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-04-02 00:41:44,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 27 transitions. [2023-04-02 00:41:44,415 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 27 transitions. Word has length 22 [2023-04-02 00:41:44,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 00:41:44,416 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 27 transitions. [2023-04-02 00:41:44,416 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 2 states have internal predecessors, (14), 2 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-04-02 00:41:44,416 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 27 transitions. [2023-04-02 00:41:44,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-04-02 00:41:44,417 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 00:41:44,417 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 00:41:44,417 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-02 00:41:44,418 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 00:41:44,418 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 00:41:44,418 INFO L85 PathProgramCache]: Analyzing trace with hash -322160243, now seen corresponding path program 1 times [2023-04-02 00:41:44,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 00:41:44,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2079731549] [2023-04-02 00:41:44,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 00:41:44,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 00:41:44,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-04-02 00:41:44,467 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-04-02 00:41:44,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-04-02 00:41:44,522 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-04-02 00:41:44,523 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-04-02 00:41:44,524 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-04-02 00:41:44,527 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-02 00:41:44,531 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-04-02 00:41:44,535 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-04-02 00:41:44,554 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.04 12:41:44 BoogieIcfgContainer [2023-04-02 00:41:44,555 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-04-02 00:41:44,555 INFO L158 Benchmark]: Toolchain (without parser) took 1387.35ms. Allocated memory is still 269.5MB. Free memory was 221.7MB in the beginning and 153.1MB in the end (delta: 68.7MB). Peak memory consumption was 68.2MB. Max. memory is 8.0GB. [2023-04-02 00:41:44,556 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 178.3MB. Free memory is still 127.0MB. There was no memory consumed. Max. memory is 8.0GB. [2023-04-02 00:41:44,556 INFO L158 Benchmark]: CACSL2BoogieTranslator took 190.95ms. Allocated memory is still 269.5MB. Free memory was 221.2MB in the beginning and 210.7MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2023-04-02 00:41:44,556 INFO L158 Benchmark]: Boogie Preprocessor took 40.78ms. Allocated memory is still 269.5MB. Free memory was 210.7MB in the beginning and 209.2MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-04-02 00:41:44,557 INFO L158 Benchmark]: RCFGBuilder took 264.09ms. Allocated memory is still 269.5MB. Free memory was 209.2MB in the beginning and 196.1MB in the end (delta: 13.1MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2023-04-02 00:41:44,557 INFO L158 Benchmark]: TraceAbstraction took 886.85ms. Allocated memory is still 269.5MB. Free memory was 195.0MB in the beginning and 153.1MB in the end (delta: 41.9MB). Peak memory consumption was 41.9MB. Max. memory is 8.0GB. [2023-04-02 00:41:44,559 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 178.3MB. Free memory is still 127.0MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 190.95ms. Allocated memory is still 269.5MB. Free memory was 221.2MB in the beginning and 210.7MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * Boogie Preprocessor took 40.78ms. Allocated memory is still 269.5MB. Free memory was 210.7MB in the beginning and 209.2MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 264.09ms. Allocated memory is still 269.5MB. Free memory was 209.2MB in the beginning and 196.1MB in the end (delta: 13.1MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * TraceAbstraction took 886.85ms. Allocated memory is still 269.5MB. Free memory was 195.0MB in the beginning and 153.1MB in the end (delta: 41.9MB). Peak memory consumption was 41.9MB. 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: 13]: 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 39, overapproximation of someBinaryArithmeticDOUBLEoperation at line 27. Possible FailurePath: [L32] int a; [L33] double r; [L35] a = __VERIFIER_nondet_int() [L36] CALL assume_abort_if_not(a >= -10000 && a <= 10000) VAL [\old(cond)=1] [L11] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L36] RET assume_abort_if_not(a >= -10000 && a <= 10000) VAL [a=0] [L38] CALL, EXPR cast(a) VAL [\old(i)=0] [L22] union u x, y; [L23] x.i[0] = 0x43300000 [L24] EXPR x.i[0] [L24] y.i[0] = x.i[0] [L25] x.i[1] = 0x80000000 [L26] EXPR x.i[1] VAL [\old(i)=0, i=0, x.i[1]=-2147483648, x={5:0}, y={6:0}] [L26] EXPR i ^ x.i[1] VAL [\old(i)=0, i ^ x.i[1]=-2147483648, i=0, x.i[1]=-2147483648, x={5:0}, y={6:0}] [L26] y.i[1] = i ^ x.i[1] [L27] EXPR y.d [L27] EXPR x.d [L27] return y.d - x.d; [L27] return y.d - x.d; [L27] return y.d - x.d; VAL [\old(i)=0, i=0] [L38] RET, EXPR cast(a) VAL [a=0, cast(a)=1127219219] [L38] r = cast(a) [L39] CALL __VERIFIER_assert(r >= -10000. && r <= 10000.) VAL [\old(cond)=0] [L13] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L13] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 35 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.8s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 34 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 33 mSDsluCounter, 7 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2 mSDsCounter, 11 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 49 IncrementalHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 11 mSolverCounterUnsat, 5 mSDtfsCounter, 49 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=32occurred in iteration=0, InterpolantAutomatonStates: 5, 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: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 44 NumberOfCodeBlocks, 44 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 21 ConstructedInterpolants, 0 QuantifiedInterpolants, 39 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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 00:41:44,586 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...