./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/float-benchs/mea8000.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3a877d22 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/float-benchs/mea8000.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash cd44d90aed9d2d04077d2b748267e187447c04398d91bc61f6043a9ae8c38324 --- Real Ultimate output --- This is Ultimate 0.2.2-3a877d227dc491413fd706022d0c47cd97beb353-3a877d2 [2021-12-15 10:25:38,628 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-15 10:25:38,630 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-15 10:25:38,662 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-15 10:25:38,664 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-15 10:25:38,665 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-15 10:25:38,666 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-15 10:25:38,676 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-15 10:25:38,678 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-15 10:25:38,679 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-15 10:25:38,682 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-15 10:25:38,683 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-15 10:25:38,684 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-15 10:25:38,686 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-15 10:25:38,687 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-15 10:25:38,688 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-15 10:25:38,689 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-15 10:25:38,693 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-15 10:25:38,697 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-15 10:25:38,700 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-15 10:25:38,702 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-15 10:25:38,704 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-15 10:25:38,704 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-15 10:25:38,705 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-15 10:25:38,707 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-15 10:25:38,709 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-15 10:25:38,710 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-15 10:25:38,710 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-15 10:25:38,711 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-15 10:25:38,712 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-15 10:25:38,712 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-15 10:25:38,712 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-15 10:25:38,713 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-15 10:25:38,714 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-15 10:25:38,715 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-15 10:25:38,715 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-15 10:25:38,716 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-15 10:25:38,716 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-15 10:25:38,716 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-15 10:25:38,716 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-15 10:25:38,717 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-15 10:25:38,718 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-15 10:25:38,739 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-15 10:25:38,739 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-15 10:25:38,739 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-15 10:25:38,740 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-15 10:25:38,740 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-15 10:25:38,740 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-15 10:25:38,741 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-15 10:25:38,741 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-15 10:25:38,741 INFO L138 SettingsManager]: * Use SBE=true [2021-12-15 10:25:38,741 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-15 10:25:38,742 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-15 10:25:38,742 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-15 10:25:38,742 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-15 10:25:38,742 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-15 10:25:38,742 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-15 10:25:38,743 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-15 10:25:38,743 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-15 10:25:38,743 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-15 10:25:38,743 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-15 10:25:38,743 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-15 10:25:38,743 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-15 10:25:38,743 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-15 10:25:38,744 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-15 10:25:38,744 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-15 10:25:38,744 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 10:25:38,744 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-15 10:25:38,744 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-15 10:25:38,744 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-15 10:25:38,744 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-15 10:25:38,745 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-15 10:25:38,745 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-15 10:25:38,745 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-15 10:25:38,745 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-15 10:25:38,745 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-15 10:25:38,745 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cd44d90aed9d2d04077d2b748267e187447c04398d91bc61f6043a9ae8c38324 [2021-12-15 10:25:38,975 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-15 10:25:38,991 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-15 10:25:38,994 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-15 10:25:38,995 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-15 10:25:38,995 INFO L275 PluginConnector]: CDTParser initialized [2021-12-15 10:25:38,996 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-benchs/mea8000.c [2021-12-15 10:25:39,056 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fc4572397/6573443dddca46bba6d8be75f68ede66/FLAG8e7791483 [2021-12-15 10:25:39,427 INFO L306 CDTParser]: Found 1 translation units. [2021-12-15 10:25:39,428 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/mea8000.c [2021-12-15 10:25:39,435 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fc4572397/6573443dddca46bba6d8be75f68ede66/FLAG8e7791483 [2021-12-15 10:25:39,833 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fc4572397/6573443dddca46bba6d8be75f68ede66 [2021-12-15 10:25:39,835 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-15 10:25:39,836 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-15 10:25:39,837 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-15 10:25:39,838 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-15 10:25:39,840 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-15 10:25:39,841 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 10:25:39" (1/1) ... [2021-12-15 10:25:39,841 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@633cc377 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:25:39, skipping insertion in model container [2021-12-15 10:25:39,842 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 10:25:39" (1/1) ... [2021-12-15 10:25:39,852 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-15 10:25:39,878 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-15 10:25:40,040 WARN L230 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/mea8000.c[649,662] [2021-12-15 10:25:40,146 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 10:25:40,164 INFO L203 MainTranslator]: Completed pre-run [2021-12-15 10:25:40,175 WARN L230 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/mea8000.c[649,662] [2021-12-15 10:25:40,228 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 10:25:40,256 INFO L208 MainTranslator]: Completed translation [2021-12-15 10:25:40,257 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:25:40 WrapperNode [2021-12-15 10:25:40,257 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-15 10:25:40,258 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-15 10:25:40,258 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-15 10:25:40,258 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-15 10:25:40,263 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:25:40" (1/1) ... [2021-12-15 10:25:40,280 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:25:40" (1/1) ... [2021-12-15 10:25:40,331 INFO L137 Inliner]: procedures = 39, calls = 238, calls flagged for inlining = 14, calls inlined = 14, statements flattened = 424 [2021-12-15 10:25:40,331 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-15 10:25:40,332 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-15 10:25:40,332 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-15 10:25:40,332 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-15 10:25:40,338 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:25:40" (1/1) ... [2021-12-15 10:25:40,338 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:25:40" (1/1) ... [2021-12-15 10:25:40,349 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:25:40" (1/1) ... [2021-12-15 10:25:40,363 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:25:40" (1/1) ... [2021-12-15 10:25:40,378 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:25:40" (1/1) ... [2021-12-15 10:25:40,392 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:25:40" (1/1) ... [2021-12-15 10:25:40,394 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:25:40" (1/1) ... [2021-12-15 10:25:40,398 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-15 10:25:40,400 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-15 10:25:40,401 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-15 10:25:40,401 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-15 10:25:40,402 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:25:40" (1/1) ... [2021-12-15 10:25:40,421 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 10:25:40,435 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 10:25:40,445 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) [2021-12-15 10:25:40,451 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 [2021-12-15 10:25:40,471 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-15 10:25:40,471 INFO L130 BoogieDeclarations]: Found specification of procedure write_signed16 [2021-12-15 10:25:40,471 INFO L138 BoogieDeclarations]: Found implementation of procedure write_signed16 [2021-12-15 10:25:40,471 INFO L130 BoogieDeclarations]: Found specification of procedure cos [2021-12-15 10:25:40,471 INFO L138 BoogieDeclarations]: Found implementation of procedure cos [2021-12-15 10:25:40,471 INFO L130 BoogieDeclarations]: Found specification of procedure update_req [2021-12-15 10:25:40,472 INFO L138 BoogieDeclarations]: Found implementation of procedure update_req [2021-12-15 10:25:40,472 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-12-15 10:25:40,472 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-15 10:25:40,472 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-12-15 10:25:40,472 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-15 10:25:40,472 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_unsigned_char [2021-12-15 10:25:40,472 INFO L130 BoogieDeclarations]: Found specification of procedure exp [2021-12-15 10:25:40,473 INFO L138 BoogieDeclarations]: Found implementation of procedure exp [2021-12-15 10:25:40,473 INFO L130 BoogieDeclarations]: Found specification of procedure interp [2021-12-15 10:25:40,473 INFO L138 BoogieDeclarations]: Found implementation of procedure interp [2021-12-15 10:25:40,473 INFO L130 BoogieDeclarations]: Found specification of procedure start_frame [2021-12-15 10:25:40,473 INFO L138 BoogieDeclarations]: Found implementation of procedure start_frame [2021-12-15 10:25:40,473 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-15 10:25:40,473 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-15 10:25:40,473 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-15 10:25:40,473 INFO L130 BoogieDeclarations]: Found specification of procedure shift_frame [2021-12-15 10:25:40,474 INFO L138 BoogieDeclarations]: Found implementation of procedure shift_frame [2021-12-15 10:25:40,474 INFO L130 BoogieDeclarations]: Found specification of procedure decode_frame [2021-12-15 10:25:40,474 INFO L138 BoogieDeclarations]: Found implementation of procedure decode_frame [2021-12-15 10:25:40,474 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-15 10:25:40,474 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-15 10:25:40,474 INFO L130 BoogieDeclarations]: Found specification of procedure stop_frame [2021-12-15 10:25:40,474 INFO L138 BoogieDeclarations]: Found implementation of procedure stop_frame [2021-12-15 10:25:40,474 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-12-15 10:25:40,475 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-12-15 10:25:40,592 INFO L236 CfgBuilder]: Building ICFG [2021-12-15 10:25:40,594 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-15 10:25:41,071 INFO L277 CfgBuilder]: Performing block encoding [2021-12-15 10:25:41,076 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-15 10:25:41,076 INFO L301 CfgBuilder]: Removed 6 assume(true) statements. [2021-12-15 10:25:41,078 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 10:25:41 BoogieIcfgContainer [2021-12-15 10:25:41,078 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-15 10:25:41,079 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-15 10:25:41,079 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-15 10:25:41,082 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-15 10:25:41,082 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 10:25:39" (1/3) ... [2021-12-15 10:25:41,083 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@513dfc5a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 10:25:41, skipping insertion in model container [2021-12-15 10:25:41,083 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:25:40" (2/3) ... [2021-12-15 10:25:41,083 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@513dfc5a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 10:25:41, skipping insertion in model container [2021-12-15 10:25:41,083 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 10:25:41" (3/3) ... [2021-12-15 10:25:41,084 INFO L111 eAbstractionObserver]: Analyzing ICFG mea8000.c [2021-12-15 10:25:41,088 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-15 10:25:41,088 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-15 10:25:41,118 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-15 10:25:41,123 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-12-15 10:25:41,123 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-15 10:25:41,137 INFO L276 IsEmpty]: Start isEmpty. Operand has 148 states, 104 states have (on average 1.3846153846153846) internal successors, (144), 114 states have internal predecessors, (144), 31 states have call successors, (31), 11 states have call predecessors, (31), 11 states have return successors, (31), 27 states have call predecessors, (31), 31 states have call successors, (31) [2021-12-15 10:25:41,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-12-15 10:25:41,141 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 10:25:41,142 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 10:25:41,142 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 10:25:41,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 10:25:41,146 INFO L85 PathProgramCache]: Analyzing trace with hash -949085870, now seen corresponding path program 1 times [2021-12-15 10:25:41,152 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 10:25:41,153 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1193266344] [2021-12-15 10:25:41,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 10:25:41,154 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 10:25:41,198 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-15 10:25:41,198 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.UnsupportedOperationException: Set is immutable at de.uni_freiburg.informatik.ultimate.util.datastructures.ImmutableSet.retainAll(ImmutableSet.java:338) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.UnmodifiableTransFormula.removeSuperfluousVars(UnmodifiableTransFormula.java:212) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaBuilder.finishConstruction(TransFormulaBuilder.java:273) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.OldVarsAssignmentCache.constructGlobalVarsAssignment(OldVarsAssignmentCache.java:155) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.OldVarsAssignmentCache.getGlobalVarsAssignment(OldVarsAssignmentCache.java:93) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.DefaultTransFormulas.getGlobalVarAssignmentFromValidPos(DefaultTransFormulas.java:89) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.DefaultTransFormulas.getGlobalVarAssignmentFromValidPos(DefaultTransFormulas.java:1) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedFormulas.getGlobalVarAssignment(NestedFormulas.java:126) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckUtils.decoupleArrayValues(TraceCheckUtils.java:384) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheck.(InterpolatingTraceCheck.java:87) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.(InterpolatingTraceCheckCraig.java:89) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleCraig.construct(IpTcStrategyModuleCraig.java:79) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleCraig.construct(IpTcStrategyModuleCraig.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:211) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:124) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:610) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-12-15 10:25:41,202 INFO L158 Benchmark]: Toolchain (without parser) took 1365.31ms. Allocated memory is still 144.7MB. Free memory was 113.4MB in the beginning and 98.3MB in the end (delta: 15.1MB). Peak memory consumption was 12.4MB. Max. memory is 16.1GB. [2021-12-15 10:25:41,203 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 83.9MB. Free memory was 43.3MB in the beginning and 43.2MB in the end (delta: 40.5kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 10:25:41,203 INFO L158 Benchmark]: CACSL2BoogieTranslator took 419.58ms. Allocated memory is still 144.7MB. Free memory was 113.0MB in the beginning and 111.0MB in the end (delta: 2.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-15 10:25:41,204 INFO L158 Benchmark]: Boogie Procedure Inliner took 73.24ms. Allocated memory is still 144.7MB. Free memory was 111.0MB in the beginning and 107.2MB in the end (delta: 3.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-12-15 10:25:41,204 INFO L158 Benchmark]: Boogie Preprocessor took 68.15ms. Allocated memory is still 144.7MB. Free memory was 106.8MB in the beginning and 103.4MB in the end (delta: 3.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-12-15 10:25:41,204 INFO L158 Benchmark]: RCFGBuilder took 677.51ms. Allocated memory is still 144.7MB. Free memory was 103.4MB in the beginning and 109.5MB in the end (delta: -6.1MB). Peak memory consumption was 33.9MB. Max. memory is 16.1GB. [2021-12-15 10:25:41,205 INFO L158 Benchmark]: TraceAbstraction took 122.11ms. Allocated memory is still 144.7MB. Free memory was 108.8MB in the beginning and 98.3MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-12-15 10:25:41,207 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 83.9MB. Free memory was 43.3MB in the beginning and 43.2MB in the end (delta: 40.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 419.58ms. Allocated memory is still 144.7MB. Free memory was 113.0MB in the beginning and 111.0MB in the end (delta: 2.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 73.24ms. Allocated memory is still 144.7MB. Free memory was 111.0MB in the beginning and 107.2MB in the end (delta: 3.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 68.15ms. Allocated memory is still 144.7MB. Free memory was 106.8MB in the beginning and 103.4MB in the end (delta: 3.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 677.51ms. Allocated memory is still 144.7MB. Free memory was 103.4MB in the beginning and 109.5MB in the end (delta: -6.1MB). Peak memory consumption was 33.9MB. Max. memory is 16.1GB. * TraceAbstraction took 122.11ms. Allocated memory is still 144.7MB. Free memory was 108.8MB in the beginning and 98.3MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: UnsupportedOperationException: Set is immutable de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: UnsupportedOperationException: Set is immutable: de.uni_freiburg.informatik.ultimate.util.datastructures.ImmutableSet.retainAll(ImmutableSet.java:338) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-12-15 10:25:41,231 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... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/float-benchs/mea8000.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash cd44d90aed9d2d04077d2b748267e187447c04398d91bc61f6043a9ae8c38324 --- Real Ultimate output --- This is Ultimate 0.2.2-3a877d227dc491413fd706022d0c47cd97beb353-3a877d2 [2021-12-15 10:25:42,927 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-15 10:25:42,930 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-15 10:25:42,960 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-15 10:25:42,961 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-15 10:25:42,963 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-15 10:25:42,964 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-15 10:25:42,968 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-15 10:25:42,970 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-15 10:25:42,973 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-15 10:25:42,974 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-15 10:25:42,977 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-15 10:25:42,977 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-15 10:25:42,979 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-15 10:25:42,980 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-15 10:25:42,983 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-15 10:25:42,983 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-15 10:25:42,984 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-15 10:25:42,986 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-15 10:25:42,990 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-15 10:25:42,991 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-15 10:25:42,992 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-15 10:25:42,993 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-15 10:25:42,994 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-15 10:25:42,999 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-15 10:25:42,999 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-15 10:25:42,999 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-15 10:25:43,000 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-15 10:25:43,001 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-15 10:25:43,002 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-15 10:25:43,002 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-15 10:25:43,002 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-15 10:25:43,004 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-15 10:25:43,004 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-15 10:25:43,005 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-15 10:25:43,005 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-15 10:25:43,006 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-15 10:25:43,006 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-15 10:25:43,006 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-15 10:25:43,007 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-15 10:25:43,007 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-15 10:25:43,011 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-12-15 10:25:43,044 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-15 10:25:43,045 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-15 10:25:43,045 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-15 10:25:43,046 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-15 10:25:43,046 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-15 10:25:43,046 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-15 10:25:43,047 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-15 10:25:43,048 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-15 10:25:43,048 INFO L138 SettingsManager]: * Use SBE=true [2021-12-15 10:25:43,048 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-15 10:25:43,048 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-15 10:25:43,049 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-15 10:25:43,049 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-15 10:25:43,049 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-15 10:25:43,049 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-15 10:25:43,049 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-15 10:25:43,049 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-15 10:25:43,049 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-12-15 10:25:43,050 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-12-15 10:25:43,050 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-15 10:25:43,050 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-15 10:25:43,050 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-15 10:25:43,050 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-15 10:25:43,050 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-15 10:25:43,050 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-15 10:25:43,051 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-15 10:25:43,051 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 10:25:43,051 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-15 10:25:43,051 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-15 10:25:43,051 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-15 10:25:43,051 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-12-15 10:25:43,051 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-12-15 10:25:43,052 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-15 10:25:43,052 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-15 10:25:43,052 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-15 10:25:43,052 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-15 10:25:43,052 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-12-15 10:25:43,053 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cd44d90aed9d2d04077d2b748267e187447c04398d91bc61f6043a9ae8c38324 [2021-12-15 10:25:43,328 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-15 10:25:43,346 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-15 10:25:43,348 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-15 10:25:43,349 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-15 10:25:43,350 INFO L275 PluginConnector]: CDTParser initialized [2021-12-15 10:25:43,351 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-benchs/mea8000.c [2021-12-15 10:25:43,403 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/043a8f8e9/2a69fe50f5744d2383c7bac9bc13a908/FLAGf1e3be6da [2021-12-15 10:25:43,777 INFO L306 CDTParser]: Found 1 translation units. [2021-12-15 10:25:43,778 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/mea8000.c [2021-12-15 10:25:43,788 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/043a8f8e9/2a69fe50f5744d2383c7bac9bc13a908/FLAGf1e3be6da [2021-12-15 10:25:44,159 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/043a8f8e9/2a69fe50f5744d2383c7bac9bc13a908 [2021-12-15 10:25:44,161 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-15 10:25:44,162 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-15 10:25:44,163 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-15 10:25:44,163 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-15 10:25:44,168 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-15 10:25:44,169 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 10:25:44" (1/1) ... [2021-12-15 10:25:44,171 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5220b172 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:25:44, skipping insertion in model container [2021-12-15 10:25:44,171 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 10:25:44" (1/1) ... [2021-12-15 10:25:44,176 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-15 10:25:44,205 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-15 10:25:44,288 WARN L230 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/mea8000.c[649,662] [2021-12-15 10:25:44,378 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 10:25:44,395 INFO L203 MainTranslator]: Completed pre-run [2021-12-15 10:25:44,403 WARN L230 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/mea8000.c[649,662] [2021-12-15 10:25:44,435 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 10:25:44,462 INFO L208 MainTranslator]: Completed translation [2021-12-15 10:25:44,463 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:25:44 WrapperNode [2021-12-15 10:25:44,463 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-15 10:25:44,464 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-15 10:25:44,464 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-15 10:25:44,464 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-15 10:25:44,468 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:25:44" (1/1) ... [2021-12-15 10:25:44,482 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:25:44" (1/1) ... [2021-12-15 10:25:44,510 INFO L137 Inliner]: procedures = 43, calls = 238, calls flagged for inlining = 14, calls inlined = 14, statements flattened = 418 [2021-12-15 10:25:44,510 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-15 10:25:44,511 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-15 10:25:44,511 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-15 10:25:44,511 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-15 10:25:44,516 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:25:44" (1/1) ... [2021-12-15 10:25:44,517 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:25:44" (1/1) ... [2021-12-15 10:25:44,526 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:25:44" (1/1) ... [2021-12-15 10:25:44,527 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:25:44" (1/1) ... [2021-12-15 10:25:44,541 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:25:44" (1/1) ... [2021-12-15 10:25:44,546 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:25:44" (1/1) ... [2021-12-15 10:25:44,556 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:25:44" (1/1) ... [2021-12-15 10:25:44,561 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-15 10:25:44,562 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-15 10:25:44,562 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-15 10:25:44,563 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-15 10:25:44,563 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:25:44" (1/1) ... [2021-12-15 10:25:44,568 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 10:25:44,575 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 10:25:44,585 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) [2021-12-15 10:25:44,595 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 [2021-12-15 10:25:44,612 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-15 10:25:44,613 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2021-12-15 10:25:44,613 INFO L130 BoogieDeclarations]: Found specification of procedure write_signed16 [2021-12-15 10:25:44,613 INFO L138 BoogieDeclarations]: Found implementation of procedure write_signed16 [2021-12-15 10:25:44,613 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2021-12-15 10:25:44,613 INFO L130 BoogieDeclarations]: Found specification of procedure cos [2021-12-15 10:25:44,613 INFO L138 BoogieDeclarations]: Found implementation of procedure cos [2021-12-15 10:25:44,613 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-12-15 10:25:44,614 INFO L130 BoogieDeclarations]: Found specification of procedure update_req [2021-12-15 10:25:44,614 INFO L138 BoogieDeclarations]: Found implementation of procedure update_req [2021-12-15 10:25:44,614 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-12-15 10:25:44,614 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-12-15 10:25:44,614 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-12-15 10:25:44,614 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_unsigned_char [2021-12-15 10:25:44,614 INFO L130 BoogieDeclarations]: Found specification of procedure exp [2021-12-15 10:25:44,614 INFO L138 BoogieDeclarations]: Found implementation of procedure exp [2021-12-15 10:25:44,615 INFO L130 BoogieDeclarations]: Found specification of procedure interp [2021-12-15 10:25:44,615 INFO L138 BoogieDeclarations]: Found implementation of procedure interp [2021-12-15 10:25:44,615 INFO L130 BoogieDeclarations]: Found specification of procedure start_frame [2021-12-15 10:25:44,615 INFO L138 BoogieDeclarations]: Found implementation of procedure start_frame [2021-12-15 10:25:44,615 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-15 10:25:44,615 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-15 10:25:44,615 INFO L130 BoogieDeclarations]: Found specification of procedure shift_frame [2021-12-15 10:25:44,615 INFO L138 BoogieDeclarations]: Found implementation of procedure shift_frame [2021-12-15 10:25:44,616 INFO L130 BoogieDeclarations]: Found specification of procedure decode_frame [2021-12-15 10:25:44,616 INFO L138 BoogieDeclarations]: Found implementation of procedure decode_frame [2021-12-15 10:25:44,616 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-15 10:25:44,616 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-15 10:25:44,616 INFO L130 BoogieDeclarations]: Found specification of procedure stop_frame [2021-12-15 10:25:44,616 INFO L138 BoogieDeclarations]: Found implementation of procedure stop_frame [2021-12-15 10:25:44,616 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-12-15 10:25:44,616 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-12-15 10:25:44,617 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-12-15 10:25:44,617 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-12-15 10:25:44,711 INFO L236 CfgBuilder]: Building ICFG [2021-12-15 10:25:44,722 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-15 10:26:07,158 INFO L277 CfgBuilder]: Performing block encoding [2021-12-15 10:26:07,165 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-15 10:26:07,165 INFO L301 CfgBuilder]: Removed 6 assume(true) statements. [2021-12-15 10:26:07,180 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 10:26:07 BoogieIcfgContainer [2021-12-15 10:26:07,180 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-15 10:26:07,181 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-15 10:26:07,181 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-15 10:26:07,183 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-15 10:26:07,184 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 10:25:44" (1/3) ... [2021-12-15 10:26:07,184 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d4ac633 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 10:26:07, skipping insertion in model container [2021-12-15 10:26:07,184 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:25:44" (2/3) ... [2021-12-15 10:26:07,184 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d4ac633 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 10:26:07, skipping insertion in model container [2021-12-15 10:26:07,185 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 10:26:07" (3/3) ... [2021-12-15 10:26:07,186 INFO L111 eAbstractionObserver]: Analyzing ICFG mea8000.c [2021-12-15 10:26:07,189 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-15 10:26:07,189 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-15 10:26:07,252 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-15 10:26:07,264 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-12-15 10:26:07,264 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-15 10:26:07,280 INFO L276 IsEmpty]: Start isEmpty. Operand has 148 states, 104 states have (on average 1.3846153846153846) internal successors, (144), 114 states have internal predecessors, (144), 31 states have call successors, (31), 11 states have call predecessors, (31), 11 states have return successors, (31), 27 states have call predecessors, (31), 31 states have call successors, (31) [2021-12-15 10:26:07,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-12-15 10:26:07,287 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 10:26:07,288 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 10:26:07,289 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 10:26:07,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 10:26:07,296 INFO L85 PathProgramCache]: Analyzing trace with hash -949085870, now seen corresponding path program 1 times [2021-12-15 10:26:07,306 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-15 10:26:07,307 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1207884261] [2021-12-15 10:26:07,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 10:26:07,307 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-15 10:26:07,308 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-15 10:26:07,330 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-15 10:26:07,334 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-12-15 10:26:07,402 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-12-15 10:26:07,584 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-15 10:26:07,585 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.UnsupportedOperationException: Set is immutable at de.uni_freiburg.informatik.ultimate.util.datastructures.ImmutableSet.retainAll(ImmutableSet.java:338) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.UnmodifiableTransFormula.removeSuperfluousVars(UnmodifiableTransFormula.java:212) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaBuilder.finishConstruction(TransFormulaBuilder.java:273) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.OldVarsAssignmentCache.constructGlobalVarsAssignment(OldVarsAssignmentCache.java:155) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.OldVarsAssignmentCache.getGlobalVarsAssignment(OldVarsAssignmentCache.java:93) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.DefaultTransFormulas.getGlobalVarAssignmentFromValidPos(DefaultTransFormulas.java:89) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.DefaultTransFormulas.getGlobalVarAssignmentFromValidPos(DefaultTransFormulas.java:1) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedFormulas.getGlobalVarAssignment(NestedFormulas.java:126) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckUtils.decoupleArrayValues(TraceCheckUtils.java:384) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheck.(InterpolatingTraceCheck.java:87) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:132) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:211) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:124) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:610) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-12-15 10:26:07,590 INFO L158 Benchmark]: Toolchain (without parser) took 23426.29ms. Allocated memory was 67.1MB in the beginning and 81.8MB in the end (delta: 14.7MB). Free memory was 46.2MB in the beginning and 52.3MB in the end (delta: -6.1MB). Peak memory consumption was 8.3MB. Max. memory is 16.1GB. [2021-12-15 10:26:07,590 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 67.1MB. Free memory was 47.8MB in the beginning and 47.8MB in the end (delta: 31.7kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 10:26:07,591 INFO L158 Benchmark]: CACSL2BoogieTranslator took 299.74ms. Allocated memory is still 67.1MB. Free memory was 46.0MB in the beginning and 38.9MB in the end (delta: 7.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-12-15 10:26:07,592 INFO L158 Benchmark]: Boogie Procedure Inliner took 46.72ms. Allocated memory is still 67.1MB. Free memory was 38.9MB in the beginning and 35.1MB in the end (delta: 3.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-12-15 10:26:07,594 INFO L158 Benchmark]: Boogie Preprocessor took 50.49ms. Allocated memory is still 67.1MB. Free memory was 35.1MB in the beginning and 47.3MB in the end (delta: -12.2MB). Peak memory consumption was 9.0MB. Max. memory is 16.1GB. [2021-12-15 10:26:07,595 INFO L158 Benchmark]: RCFGBuilder took 22618.31ms. Allocated memory was 67.1MB in the beginning and 81.8MB in the end (delta: 14.7MB). Free memory was 47.0MB in the beginning and 39.3MB in the end (delta: 7.8MB). Peak memory consumption was 24.5MB. Max. memory is 16.1GB. [2021-12-15 10:26:07,596 INFO L158 Benchmark]: TraceAbstraction took 407.06ms. Allocated memory is still 81.8MB. Free memory was 38.9MB in the beginning and 52.3MB in the end (delta: -13.4MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 10:26:07,598 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 67.1MB. Free memory was 47.8MB in the beginning and 47.8MB in the end (delta: 31.7kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 299.74ms. Allocated memory is still 67.1MB. Free memory was 46.0MB in the beginning and 38.9MB in the end (delta: 7.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 46.72ms. Allocated memory is still 67.1MB. Free memory was 38.9MB in the beginning and 35.1MB in the end (delta: 3.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 50.49ms. Allocated memory is still 67.1MB. Free memory was 35.1MB in the beginning and 47.3MB in the end (delta: -12.2MB). Peak memory consumption was 9.0MB. Max. memory is 16.1GB. * RCFGBuilder took 22618.31ms. Allocated memory was 67.1MB in the beginning and 81.8MB in the end (delta: 14.7MB). Free memory was 47.0MB in the beginning and 39.3MB in the end (delta: 7.8MB). Peak memory consumption was 24.5MB. Max. memory is 16.1GB. * TraceAbstraction took 407.06ms. Allocated memory is still 81.8MB. Free memory was 38.9MB in the beginning and 52.3MB in the end (delta: -13.4MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: UnsupportedOperationException: Set is immutable de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: UnsupportedOperationException: Set is immutable: de.uni_freiburg.informatik.ultimate.util.datastructures.ImmutableSet.retainAll(ImmutableSet.java:338) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-12-15 10:26:07,810 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... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: UnsupportedOperationException: Set is immutable