./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/spaghetti.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c503be2a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/spaghetti.wvr.c -s /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-2/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 c9106388fc5fedffe8be72901c8e8f4753857620 .................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-c503be2 [2021-10-13 18:42:49,619 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 18:42:49,624 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 18:42:49,682 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 18:42:49,683 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 18:42:49,687 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 18:42:49,690 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 18:42:49,695 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 18:42:49,702 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 18:42:49,708 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 18:42:49,710 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 18:42:49,712 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 18:42:49,713 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 18:42:49,716 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 18:42:49,721 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 18:42:49,725 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 18:42:49,727 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 18:42:49,728 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 18:42:49,731 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 18:42:49,740 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 18:42:49,743 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 18:42:49,745 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 18:42:49,748 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 18:42:49,749 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 18:42:49,760 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 18:42:49,762 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 18:42:49,762 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 18:42:49,765 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 18:42:49,765 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 18:42:49,766 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 18:42:49,767 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 18:42:49,768 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 18:42:49,770 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 18:42:49,771 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 18:42:49,773 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 18:42:49,773 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 18:42:49,775 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 18:42:49,775 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 18:42:49,775 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 18:42:49,778 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 18:42:49,779 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 18:42:49,789 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-13 18:42:49,822 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 18:42:49,822 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 18:42:49,823 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-13 18:42:49,823 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-13 18:42:49,824 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-13 18:42:49,825 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-13 18:42:49,825 INFO L138 SettingsManager]: * Use SBE=true [2021-10-13 18:42:49,825 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 18:42:49,826 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 18:42:49,826 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 18:42:49,826 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 18:42:49,826 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 18:42:49,827 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 18:42:49,827 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 18:42:49,827 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 18:42:49,827 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 18:42:49,828 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 18:42:49,828 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 18:42:49,828 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 18:42:49,829 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 18:42:49,829 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-13 18:42:49,829 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 18:42:49,830 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 18:42:49,830 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 18:42:49,830 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 18:42:49,830 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 18:42:49,831 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-13 18:42:49,831 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-13 18:42:49,831 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 18:42:49,842 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 18:42:49,843 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-2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c9106388fc5fedffe8be72901c8e8f4753857620 [2021-10-13 18:42:50,260 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 18:42:50,308 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 18:42:50,312 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 18:42:50,314 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 18:42:50,315 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 18:42:50,316 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/spaghetti.wvr.c [2021-10-13 18:42:50,408 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9e0422f0d/a189adece51a4c758fe8179ef3d8ca33/FLAG31a33abca [2021-10-13 18:42:51,012 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 18:42:51,013 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/spaghetti.wvr.c [2021-10-13 18:42:51,022 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9e0422f0d/a189adece51a4c758fe8179ef3d8ca33/FLAG31a33abca [2021-10-13 18:42:51,369 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9e0422f0d/a189adece51a4c758fe8179ef3d8ca33 [2021-10-13 18:42:51,374 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 18:42:51,383 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 18:42:51,385 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 18:42:51,385 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 18:42:51,390 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 18:42:51,391 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 06:42:51" (1/1) ... [2021-10-13 18:42:51,392 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2af7b6c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:42:51, skipping insertion in model container [2021-10-13 18:42:51,392 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 06:42:51" (1/1) ... [2021-10-13 18:42:51,401 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 18:42:51,422 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 18:42:51,598 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/spaghetti.wvr.c[2397,2410] [2021-10-13 18:42:51,603 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 18:42:51,620 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 18:42:51,646 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/spaghetti.wvr.c[2397,2410] [2021-10-13 18:42:51,648 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 18:42:51,664 INFO L208 MainTranslator]: Completed translation [2021-10-13 18:42:51,665 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:42:51 WrapperNode [2021-10-13 18:42:51,665 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 18:42:51,666 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 18:42:51,667 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 18:42:51,667 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 18:42:51,675 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:42:51" (1/1) ... [2021-10-13 18:42:51,684 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:42:51" (1/1) ... [2021-10-13 18:42:51,712 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 18:42:51,713 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 18:42:51,714 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 18:42:51,714 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 18:42:51,723 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:42:51" (1/1) ... [2021-10-13 18:42:51,724 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:42:51" (1/1) ... [2021-10-13 18:42:51,727 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:42:51" (1/1) ... [2021-10-13 18:42:51,728 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:42:51" (1/1) ... [2021-10-13 18:42:51,734 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:42:51" (1/1) ... [2021-10-13 18:42:51,740 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:42:51" (1/1) ... [2021-10-13 18:42:51,742 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:42:51" (1/1) ... [2021-10-13 18:42:51,745 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 18:42:51,746 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 18:42:51,746 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 18:42:51,747 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 18:42:51,748 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:42:51" (1/1) ... [2021-10-13 18:42:51,760 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 18:42:51,774 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 18:42:51,789 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 18:42:51,805 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 18:42:51,852 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-10-13 18:42:51,852 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-10-13 18:42:51,852 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-10-13 18:42:51,853 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-10-13 18:42:51,853 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-10-13 18:42:51,853 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-10-13 18:42:51,853 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2021-10-13 18:42:51,853 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2021-10-13 18:42:51,854 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-13 18:42:51,854 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 18:42:51,854 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-13 18:42:51,854 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 18:42:51,854 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 18:42:51,855 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-13 18:42:51,855 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-13 18:42:51,857 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-10-13 18:42:52,200 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 18:42:52,201 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2021-10-13 18:42:52,203 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:42:52 BoogieIcfgContainer [2021-10-13 18:42:52,204 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 18:42:52,205 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 18:42:52,206 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 18:42:52,209 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 18:42:52,210 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 06:42:51" (1/3) ... [2021-10-13 18:42:52,211 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7cee3699 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 06:42:52, skipping insertion in model container [2021-10-13 18:42:52,211 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:42:51" (2/3) ... [2021-10-13 18:42:52,211 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7cee3699 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 06:42:52, skipping insertion in model container [2021-10-13 18:42:52,212 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:42:52" (3/3) ... [2021-10-13 18:42:52,213 INFO L111 eAbstractionObserver]: Analyzing ICFG spaghetti.wvr.c [2021-10-13 18:42:52,221 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-10-13 18:42:52,235 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 18:42:52,235 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-13 18:42:52,236 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-13 18:42:52,283 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 18:42:52,284 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 18:42:52,284 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 18:42:52,285 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 18:42:52,285 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 18:42:52,286 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 18:42:52,286 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 18:42:52,286 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 18:42:52,286 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 18:42:52,287 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 18:42:52,287 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 18:42:52,287 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 18:42:52,288 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 18:42:52,288 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 18:42:52,288 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 18:42:52,289 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 18:42:52,290 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 18:42:52,290 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 18:42:52,290 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 18:42:52,291 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 18:42:52,291 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 18:42:52,292 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 18:42:52,292 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 18:42:52,292 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 18:42:52,292 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 18:42:52,293 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 18:42:52,293 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 18:42:52,293 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 18:42:52,295 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 18:42:52,295 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 18:42:52,296 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 18:42:52,296 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 18:42:52,297 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 18:42:52,297 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 18:42:52,297 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 18:42:52,297 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 18:42:52,298 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 18:42:52,298 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 18:42:52,298 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 18:42:52,299 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 18:42:52,299 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 18:42:52,299 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 18:42:52,300 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 18:42:52,300 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 18:42:52,301 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_#t~nondet8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 18:42:52,302 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_#t~nondet8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 18:42:52,302 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_#t~nondet8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 18:42:52,302 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_#t~nondet8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 18:42:52,303 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_#t~nondet8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 18:42:52,303 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_#t~nondet8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 18:42:52,303 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_#t~nondet8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 18:42:52,304 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_#t~nondet8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 18:42:52,304 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 18:42:52,304 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 18:42:52,305 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 18:42:52,305 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 18:42:52,312 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 18:42:52,313 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 18:42:52,313 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 18:42:52,314 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 18:42:52,323 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 18:42:52,324 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 18:42:52,324 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_#t~nondet8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 18:42:52,328 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 18:42:52,329 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 18:42:52,329 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 18:42:52,332 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 18:42:52,333 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 18:42:52,333 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 18:42:52,333 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 18:42:52,353 INFO L148 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2021-10-13 18:42:52,406 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 18:42:52,413 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, mConcurrency=FINITE_AUTOMATA, 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 [2021-10-13 18:42:52,414 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-10-13 18:42:52,435 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-10-13 18:42:52,449 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 126 places, 122 transitions, 276 flow [2021-10-13 18:42:52,453 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 126 places, 122 transitions, 276 flow [2021-10-13 18:42:52,455 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 126 places, 122 transitions, 276 flow [2021-10-13 18:42:52,547 INFO L129 PetriNetUnfolder]: 9/118 cut-off events. [2021-10-13 18:42:52,547 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-10-13 18:42:52,554 INFO L84 FinitePrefix]: Finished finitePrefix Result has 135 conditions, 118 events. 9/118 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 119 event pairs, 0 based on Foata normal form. 0/108 useless extension candidates. Maximal degree in co-relation 80. Up to 2 conditions per place. [2021-10-13 18:42:52,560 INFO L116 LiptonReduction]: Number of co-enabled transitions 2912 [2021-10-13 18:42:56,365 INFO L131 LiptonReduction]: Checked pairs total: 4036 [2021-10-13 18:42:56,367 INFO L133 LiptonReduction]: Total number of compositions: 98 [2021-10-13 18:42:56,383 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 43 places, 34 transitions, 100 flow [2021-10-13 18:42:56,448 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 322 states, 321 states have (on average 4.040498442367602) internal successors, (1297), 321 states have internal predecessors, (1297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 18:42:56,454 INFO L276 IsEmpty]: Start isEmpty. Operand has 322 states, 321 states have (on average 4.040498442367602) internal successors, (1297), 321 states have internal predecessors, (1297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 18:42:56,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-13 18:42:56,486 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 18:42:56,487 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 18:42:56,488 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 18:42:56,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 18:42:56,494 INFO L82 PathProgramCache]: Analyzing trace with hash -1342621256, now seen corresponding path program 1 times [2021-10-13 18:42:56,509 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 18:42:56,511 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297179598] [2021-10-13 18:42:56,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 18:42:56,513 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 18:42:56,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 18:42:57,051 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 18:42:57,052 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 18:42:57,052 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297179598] [2021-10-13 18:42:57,053 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1297179598] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 18:42:57,053 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 18:42:57,054 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 18:42:57,055 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069794315] [2021-10-13 18:42:57,081 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 18:42:57,081 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 18:42:57,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 18:42:57,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 18:42:57,108 INFO L87 Difference]: Start difference. First operand has 322 states, 321 states have (on average 4.040498442367602) internal successors, (1297), 321 states have internal predecessors, (1297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 3 states have (on average 7.0) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 18:42:57,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 18:42:57,226 INFO L93 Difference]: Finished difference Result 481 states and 1791 transitions. [2021-10-13 18:42:57,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 18:42:57,230 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 7.0) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-10-13 18:42:57,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 18:42:57,246 INFO L225 Difference]: With dead ends: 481 [2021-10-13 18:42:57,247 INFO L226 Difference]: Without dead ends: 256 [2021-10-13 18:42:57,248 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 14.6ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 18:42:57,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2021-10-13 18:42:57,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 206. [2021-10-13 18:42:57,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 206 states, 205 states have (on average 3.873170731707317) internal successors, (794), 205 states have internal predecessors, (794), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 18:42:57,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 794 transitions. [2021-10-13 18:42:57,320 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 794 transitions. Word has length 21 [2021-10-13 18:42:57,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 18:42:57,320 INFO L470 AbstractCegarLoop]: Abstraction has 206 states and 794 transitions. [2021-10-13 18:42:57,320 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 7.0) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 18:42:57,321 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 794 transitions. [2021-10-13 18:42:57,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-13 18:42:57,323 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 18:42:57,324 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 18:42:57,324 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-13 18:42:57,324 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 18:42:57,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 18:42:57,325 INFO L82 PathProgramCache]: Analyzing trace with hash -1819628738, now seen corresponding path program 2 times [2021-10-13 18:42:57,325 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 18:42:57,325 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1972390485] [2021-10-13 18:42:57,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 18:42:57,326 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 18:42:57,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 18:42:57,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 18:42:57,470 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 18:42:57,471 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1972390485] [2021-10-13 18:42:57,471 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1972390485] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 18:42:57,472 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 18:42:57,473 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 18:42:57,473 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068199450] [2021-10-13 18:42:57,475 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 18:42:57,478 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 18:42:57,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 18:42:57,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 18:42:57,479 INFO L87 Difference]: Start difference. First operand 206 states and 794 transitions. Second operand has 4 states, 3 states have (on average 7.0) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 18:42:57,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 18:42:57,563 INFO L93 Difference]: Finished difference Result 259 states and 968 transitions. [2021-10-13 18:42:57,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 18:42:57,563 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 7.0) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-10-13 18:42:57,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 18:42:57,564 INFO L225 Difference]: With dead ends: 259 [2021-10-13 18:42:57,564 INFO L226 Difference]: Without dead ends: 0 [2021-10-13 18:42:57,565 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.4ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 18:42:57,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-13 18:42:57,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-13 18:42:57,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 18:42:57,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-13 18:42:57,566 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 21 [2021-10-13 18:42:57,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 18:42:57,567 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-13 18:42:57,567 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 7.0) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 18:42:57,567 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-13 18:42:57,568 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-13 18:42:57,570 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 18:42:57,583 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-13 18:42:57,584 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-13 18:42:57,584 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATION [2021-10-13 18:42:57,584 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3INUSE_VIOLATION [2021-10-13 18:42:57,585 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-13 18:42:57,590 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-13 18:42:57,590 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 18:42:57,593 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 06:42:57 BasicIcfg [2021-10-13 18:42:57,593 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-13 18:42:57,594 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-13 18:42:57,594 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-13 18:42:57,594 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-13 18:42:57,595 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:42:52" (3/4) ... [2021-10-13 18:42:57,599 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-13 18:42:57,607 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2021-10-13 18:42:57,608 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2021-10-13 18:42:57,608 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2021-10-13 18:42:57,608 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread4 [2021-10-13 18:42:57,614 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 19 nodes and edges [2021-10-13 18:42:57,614 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-13 18:42:57,615 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-13 18:42:57,615 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-13 18:42:57,669 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-10-13 18:42:57,672 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-13 18:42:57,674 INFO L168 Benchmark]: Toolchain (without parser) took 6297.15 ms. Allocated memory was 65.0 MB in the beginning and 96.5 MB in the end (delta: 31.5 MB). Free memory was 41.0 MB in the beginning and 71.6 MB in the end (delta: -30.6 MB). Peak memory consumption was 3.0 MB. Max. memory is 16.1 GB. [2021-10-13 18:42:57,677 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 46.1 MB. Free memory was 23.2 MB in the beginning and 23.1 MB in the end (delta: 70.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 18:42:57,678 INFO L168 Benchmark]: CACSL2BoogieTranslator took 280.61 ms. Allocated memory is still 65.0 MB. Free memory was 40.8 MB in the beginning and 47.5 MB in the end (delta: -6.7 MB). Peak memory consumption was 12.1 MB. Max. memory is 16.1 GB. [2021-10-13 18:42:57,678 INFO L168 Benchmark]: Boogie Procedure Inliner took 46.52 ms. Allocated memory is still 65.0 MB. Free memory was 47.5 MB in the beginning and 45.8 MB in the end (delta: 1.7 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 18:42:57,680 INFO L168 Benchmark]: Boogie Preprocessor took 31.97 ms. Allocated memory is still 65.0 MB. Free memory was 45.8 MB in the beginning and 44.7 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 18:42:57,683 INFO L168 Benchmark]: RCFGBuilder took 457.51 ms. Allocated memory is still 65.0 MB. Free memory was 44.5 MB in the beginning and 32.1 MB in the end (delta: 12.3 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-13 18:42:57,684 INFO L168 Benchmark]: TraceAbstraction took 5387.85 ms. Allocated memory was 65.0 MB in the beginning and 96.5 MB in the end (delta: 31.5 MB). Free memory was 31.7 MB in the beginning and 75.0 MB in the end (delta: -43.3 MB). Peak memory consumption was 20.2 MB. Max. memory is 16.1 GB. [2021-10-13 18:42:57,684 INFO L168 Benchmark]: Witness Printer took 78.13 ms. Allocated memory is still 96.5 MB. Free memory was 74.3 MB in the beginning and 71.6 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 18:42:57,688 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 46.1 MB. Free memory was 23.2 MB in the beginning and 23.1 MB in the end (delta: 70.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 280.61 ms. Allocated memory is still 65.0 MB. Free memory was 40.8 MB in the beginning and 47.5 MB in the end (delta: -6.7 MB). Peak memory consumption was 12.1 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 46.52 ms. Allocated memory is still 65.0 MB. Free memory was 47.5 MB in the beginning and 45.8 MB in the end (delta: 1.7 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 31.97 ms. Allocated memory is still 65.0 MB. Free memory was 45.8 MB in the beginning and 44.7 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 457.51 ms. Allocated memory is still 65.0 MB. Free memory was 44.5 MB in the beginning and 32.1 MB in the end (delta: 12.3 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 5387.85 ms. Allocated memory was 65.0 MB in the beginning and 96.5 MB in the end (delta: 31.5 MB). Free memory was 31.7 MB in the beginning and 75.0 MB in the end (delta: -43.3 MB). Peak memory consumption was 20.2 MB. Max. memory is 16.1 GB. * Witness Printer took 78.13 ms. Allocated memory is still 96.5 MB. Free memory was 74.3 MB in the beginning and 71.6 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3914.7ms, 126 PlacesBefore, 43 PlacesAfterwards, 122 TransitionsBefore, 34 TransitionsAfterwards, 2912 CoEnabledTransitionPairs, 6 FixpointIterations, 40 TrivialSequentialCompositions, 42 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 11 ConcurrentYvCompositions, 5 ChoiceCompositions, 98 TotalNumberOfCompositions, 4036 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3230, positive: 3167, positive conditional: 0, positive unconditional: 3167, negative: 63, negative conditional: 0, negative unconditional: 63, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 2164, positive: 2140, positive conditional: 0, positive unconditional: 2140, negative: 24, negative conditional: 0, negative unconditional: 24, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 2164, positive: 2097, positive conditional: 0, positive unconditional: 2097, negative: 67, negative conditional: 0, negative unconditional: 67, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 67, positive: 43, positive conditional: 0, positive unconditional: 43, negative: 24, negative conditional: 0, negative unconditional: 24, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 90, positive: 47, positive conditional: 0, positive unconditional: 47, negative: 43, negative conditional: 0, negative unconditional: 43, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 3230, positive: 1027, positive conditional: 0, positive unconditional: 1027, negative: 39, negative conditional: 0, negative unconditional: 39, unknown: 2164, unknown conditional: 0, unknown unconditional: 2164] , Statistics on independence cache: Total cache size (in pairs): 160, Positive cache size: 151, Positive conditional cache size: 0, Positive unconditional cache size: 151, Negative cache size: 9, Negative conditional cache size: 0, Negative unconditional cache size: 9 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 99]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 9 procedures, 158 locations, 5 error locations. Started 1 CEGAR loops. OverallTime: 5184.7ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 39.4ms, AutomataDifference: 253.4ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 4035.4ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 105 SDtfs, 38 SDslu, 52 SDs, 0 SdLazy, 76 SolverSat, 20 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 91.9ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 23.1ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=322occurred in iteration=0, InterpolantAutomatonStates: 8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 59.2ms AutomataMinimizationTime, 2 MinimizatonAttempts, 50 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 18.3ms SsaConstructionTime, 303.3ms SatisfiabilityAnalysisTime, 253.0ms InterpolantComputationTime, 42 NumberOfCodeBlocks, 42 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 40 ConstructedInterpolants, 0 QuantifiedInterpolants, 164 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-10-13 18:42:57,760 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...