/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/water_pid.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-03-31 00:02:39,564 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-03-31 00:02:39,566 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-03-31 00:02:39,608 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2023-03-31 00:02:39,625 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-03-31 00:02:39,626 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-03-31 00:02:39,626 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-03-31 00:02:39,627 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-03-31 00:02:39,627 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-03-31 00:02:39,628 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-03-31 00:02:39,629 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-03-31 00:02:39,630 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-03-31 00:02:39,631 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-03-31 00:02:39,634 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-03-31 00:02:39,636 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-03-31 00:02:39,637 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-03-31 00:02:39,649 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-03-31 00:02:39,657 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-03-31 00:02:39,657 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-03-31 00:02:39,658 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-03-31 00:02:39,659 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 [2023-03-31 00:02:39,691 INFO L113 SettingsManager]: Loading preferences was successful [2023-03-31 00:02:39,691 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-03-31 00:02:39,692 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-03-31 00:02:39,692 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-03-31 00:02:39,693 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-03-31 00:02:39,693 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-03-31 00:02:39,694 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-03-31 00:02:39,694 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-03-31 00:02:39,694 INFO L138 SettingsManager]: * Use SBE=true [2023-03-31 00:02:39,694 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-03-31 00:02:39,695 INFO L138 SettingsManager]: * sizeof long=4 [2023-03-31 00:02:39,695 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-03-31 00:02:39,695 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-03-31 00:02:39,695 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-03-31 00:02:39,696 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-03-31 00:02:39,696 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-03-31 00:02:39,696 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-03-31 00:02:39,696 INFO L138 SettingsManager]: * sizeof long double=12 [2023-03-31 00:02:39,696 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-03-31 00:02:39,696 INFO L138 SettingsManager]: * Use constant arrays=true [2023-03-31 00:02:39,696 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-03-31 00:02:39,696 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-03-31 00:02:39,697 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-03-31 00:02:39,697 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-03-31 00:02:39,697 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-31 00:02:39,697 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-03-31 00:02:39,697 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-03-31 00:02:39,697 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-03-31 00:02:39,697 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-03-31 00:02:39,697 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-03-31 00:02:39,698 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-03-31 00:02:39,698 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-03-31 00:02:39,698 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-03-31 00:02:39,698 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-03-31 00:02:39,698 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-03-31 00:02:39,698 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-03-31 00:02:39,919 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-03-31 00:02:39,944 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-03-31 00:02:39,946 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-03-31 00:02:39,947 INFO L271 PluginConnector]: Initializing CDTParser... [2023-03-31 00:02:39,948 INFO L275 PluginConnector]: CDTParser initialized [2023-03-31 00:02:39,949 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-benchs/water_pid.c [2023-03-31 00:02:41,118 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-03-31 00:02:41,344 INFO L351 CDTParser]: Found 1 translation units. [2023-03-31 00:02:41,344 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/water_pid.c [2023-03-31 00:02:41,348 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/867337032/9a37dfe1e802471e8e62c269a1b3a50a/FLAG53b6dc48c [2023-03-31 00:02:41,360 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/867337032/9a37dfe1e802471e8e62c269a1b3a50a [2023-03-31 00:02:41,362 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-03-31 00:02:41,363 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-03-31 00:02:41,364 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-03-31 00:02:41,367 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-03-31 00:02:41,370 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-03-31 00:02:41,370 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.03 12:02:41" (1/1) ... [2023-03-31 00:02:41,371 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f9e1318 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 12:02:41, skipping insertion in model container [2023-03-31 00:02:41,371 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.03 12:02:41" (1/1) ... [2023-03-31 00:02:41,377 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-03-31 00:02:41,396 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-03-31 00:02:41,500 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/water_pid.c[452,465] [2023-03-31 00:02:41,517 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-31 00:02:41,525 INFO L203 MainTranslator]: Completed pre-run [2023-03-31 00:02:41,533 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/water_pid.c[452,465] [2023-03-31 00:02:41,538 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-31 00:02:41,549 INFO L208 MainTranslator]: Completed translation [2023-03-31 00:02:41,549 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 12:02:41 WrapperNode [2023-03-31 00:02:41,549 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-03-31 00:02:41,550 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-03-31 00:02:41,550 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-03-31 00:02:41,550 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-03-31 00:02:41,559 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 12:02:41" (1/1) ... [2023-03-31 00:02:41,559 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 12:02:41" (1/1) ... [2023-03-31 00:02:41,567 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 12:02:41" (1/1) ... [2023-03-31 00:02:41,567 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 12:02:41" (1/1) ... [2023-03-31 00:02:41,583 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 12:02:41" (1/1) ... [2023-03-31 00:02:41,585 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 12:02:41" (1/1) ... [2023-03-31 00:02:41,586 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 12:02:41" (1/1) ... [2023-03-31 00:02:41,587 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 12:02:41" (1/1) ... [2023-03-31 00:02:41,589 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-03-31 00:02:41,589 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-03-31 00:02:41,589 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-03-31 00:02:41,590 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-03-31 00:02:41,590 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 12:02:41" (1/1) ... [2023-03-31 00:02:41,598 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-31 00:02:41,607 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 00:02:41,620 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) [2023-03-31 00:02:41,629 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 [2023-03-31 00:02:41,654 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-03-31 00:02:41,654 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-03-31 00:02:41,655 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-03-31 00:02:41,655 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-03-31 00:02:41,655 INFO L138 BoogieDeclarations]: Found implementation of procedure y [2023-03-31 00:02:41,655 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-03-31 00:02:41,656 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-03-31 00:02:41,656 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-03-31 00:02:41,656 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-03-31 00:02:41,656 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-03-31 00:02:41,656 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-03-31 00:02:41,656 INFO L130 BoogieDeclarations]: Found specification of procedure y [2023-03-31 00:02:41,656 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-03-31 00:02:41,657 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-03-31 00:02:41,657 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-03-31 00:02:41,657 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-03-31 00:02:41,657 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-03-31 00:02:41,657 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-03-31 00:02:41,658 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-03-31 00:02:41,718 INFO L236 CfgBuilder]: Building ICFG [2023-03-31 00:02:41,720 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-03-31 00:02:41,810 INFO L277 CfgBuilder]: Performing block encoding [2023-03-31 00:02:41,816 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-03-31 00:02:41,816 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-03-31 00:02:41,818 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.03 12:02:41 BoogieIcfgContainer [2023-03-31 00:02:41,818 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-03-31 00:02:41,820 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-03-31 00:02:41,820 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-03-31 00:02:41,823 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-03-31 00:02:41,823 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.03 12:02:41" (1/3) ... [2023-03-31 00:02:41,824 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a09bff3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.03 12:02:41, skipping insertion in model container [2023-03-31 00:02:41,824 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 12:02:41" (2/3) ... [2023-03-31 00:02:41,824 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a09bff3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.03 12:02:41, skipping insertion in model container [2023-03-31 00:02:41,824 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.03 12:02:41" (3/3) ... [2023-03-31 00:02:41,826 INFO L112 eAbstractionObserver]: Analyzing ICFG water_pid.c [2023-03-31 00:02:41,847 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-03-31 00:02:41,847 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-03-31 00:02:41,907 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-03-31 00:02:41,914 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;@68e627d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-03-31 00:02:41,914 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-03-31 00:02:41,918 INFO L276 IsEmpty]: Start isEmpty. Operand has 27 states, 16 states have (on average 1.25) internal successors, (20), 17 states have internal predecessors, (20), 5 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-03-31 00:02:41,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-03-31 00:02:41,923 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 00:02:41,923 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 00:02:41,924 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 00:02:41,927 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 00:02:41,928 INFO L85 PathProgramCache]: Analyzing trace with hash 1798433575, now seen corresponding path program 1 times [2023-03-31 00:02:41,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 00:02:41,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [584209516] [2023-03-31 00:02:41,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 00:02:41,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 00:02:42,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-03-31 00:02:42,066 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-03-31 00:02:42,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-03-31 00:02:42,116 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-03-31 00:02:42,117 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-03-31 00:02:42,119 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-03-31 00:02:42,121 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-03-31 00:02:42,125 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-03-31 00:02:42,131 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-03-31 00:02:42,175 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.03 12:02:42 BoogieIcfgContainer [2023-03-31 00:02:42,175 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-03-31 00:02:42,176 INFO L158 Benchmark]: Toolchain (without parser) took 812.82ms. Allocated memory is still 255.9MB. Free memory was 220.8MB in the beginning and 182.0MB in the end (delta: 38.8MB). Peak memory consumption was 38.8MB. Max. memory is 8.0GB. [2023-03-31 00:02:42,177 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 180.4MB. Free memory is still 125.8MB. There was no memory consumed. Max. memory is 8.0GB. [2023-03-31 00:02:42,177 INFO L158 Benchmark]: CACSL2BoogieTranslator took 185.31ms. Allocated memory is still 255.9MB. Free memory was 220.8MB in the beginning and 210.3MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2023-03-31 00:02:42,177 INFO L158 Benchmark]: Boogie Preprocessor took 38.68ms. Allocated memory is still 255.9MB. Free memory was 210.3MB in the beginning and 208.7MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-03-31 00:02:42,178 INFO L158 Benchmark]: RCFGBuilder took 228.53ms. Allocated memory is still 255.9MB. Free memory was 208.7MB in the beginning and 197.7MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2023-03-31 00:02:42,178 INFO L158 Benchmark]: TraceAbstraction took 355.74ms. Allocated memory is still 255.9MB. Free memory was 196.7MB in the beginning and 182.0MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. [2023-03-31 00:02:42,184 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 180.4MB. Free memory is still 125.8MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 185.31ms. Allocated memory is still 255.9MB. Free memory was 220.8MB in the beginning and 210.3MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * Boogie Preprocessor took 38.68ms. Allocated memory is still 255.9MB. Free memory was 210.3MB in the beginning and 208.7MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 228.53ms. Allocated memory is still 255.9MB. Free memory was 208.7MB in the beginning and 197.7MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * TraceAbstraction took 355.74ms. Allocated memory is still 255.9MB. Free memory was 196.7MB in the beginning and 182.0MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 8]: 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 46, overapproximation of to_real at line 31, overapproximation of someBinaryArithmeticDOUBLEoperation at line 41. Possible FailurePath: [L12] static NUM yn = 0; [L14] NUM ui = 0; VAL [\old(ui)=7, \old(yn)=6] [L24] NUM yi, yc; [L25] NUM K; [L26] NUM T; [L27] NUM taui; [L28] NUM taud; [L29] NUM ei, sumej, epi; [L30] int i; [L31] T = 1 [L32] taui = 1 [L33] taud = 1 [L34] K = .5 [L35] yc = .5 VAL [K=1/2, \old(ui)=2, \old(yn)=9, ui=2, yc=1/2, yn=9] [L36] CALL, EXPR y(0) VAL [\old(i)=0, \old(ui)=2, \old(yn)=9, ui=2, yn=9] [L18] yn += ui [L19] return yn; VAL [\old(i)=0, \old(ui)=2, \old(yn)=9, \result=4, i=0, ui=2, yn=4] [L36] RET, EXPR y(0) VAL [K=1/2, \old(ui)=2, \old(yn)=9, ui=2, y(0)=4, yc=1/2, yn=4] [L36] yi = y(0) [L37] epi = yc-yi [L38] sumej = epi [L39] i=0 VAL [K=1/2, \old(ui)=2, \old(yn)=9, epi=5, i=0, sumej=5, ui=2, yc=1/2, yi=4, yn=4] [L39] COND TRUE i<120 VAL [K=1/2, \old(ui)=2, \old(yn)=9, epi=5, i=0, sumej=5, ui=2, yc=1/2, yi=4, yn=4] [L40] CALL, EXPR y(i) VAL [\old(i)=0, \old(ui)=2, \old(yn)=4, ui=2, yn=4] [L18] yn += ui [L19] return yn; VAL [\old(i)=0, \old(ui)=2, \old(yn)=4, \result=8, i=0, ui=2, yn=8] [L40] RET, EXPR y(i) VAL [K=1/2, \old(ui)=2, \old(yn)=9, epi=5, i=0, sumej=5, ui=2, y(i)=8, yc=1/2, yi=4, yn=8] [L40] yi = y(i) [L41] ei = yc-yi [L42] sumej = sumej+ei [L43] ui = K*(ei+sumej*T/taui+taud/T*(ei-epi)) [L44] epi = ei VAL [K=1/2, \old(ui)=2, \old(yn)=9, ei=3, epi=3, i=0, yc=1/2, yi=8, yn=8] [L46] CALL __VERIFIER_assert(epi >= -1. && epi <= 1.) VAL [\old(cond)=0, \old(ui)=2, \old(yn)=9, yn=8] [L8] COND TRUE !(cond) VAL [\old(cond)=0, \old(ui)=2, \old(yn)=9, cond=0, yn=8] [L8] reach_error() VAL [\old(cond)=0, \old(ui)=2, \old(yn)=9, cond=0, yn=8] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 30 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.2s, OverallIterations: 1, TraceHistogramMax: 2, 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=27occurred 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, 21 NumberOfCodeBlocks, 21 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 [2023-03-31 00:02:42,203 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...