./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-ext/23_lu-fig2.fixed.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 35987657 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/pthread-ext/23_lu-fig2.fixed.i -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 1e7e50acdaac6c5347f0e6861619a1b564ff01a6e5e780f6d69a20f7f739312d --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-21 08:36:12,605 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 08:36:12,608 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 08:36:12,646 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 08:36:12,647 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 08:36:12,647 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 08:36:12,650 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 08:36:12,653 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 08:36:12,654 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 08:36:12,657 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-21 08:36:12,658 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-21 08:36:12,662 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 08:36:12,662 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 08:36:12,663 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 08:36:12,664 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 08:36:12,666 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 08:36:12,667 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 08:36:12,668 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 08:36:12,669 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 08:36:12,673 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 08:36:12,674 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 08:36:12,675 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 08:36:12,676 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 08:36:12,677 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 08:36:12,678 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 08:36:12,682 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 08:36:12,683 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 08:36:12,683 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 08:36:12,683 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 08:36:12,684 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 08:36:12,684 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 08:36:12,685 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 08:36:12,686 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 08:36:12,686 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 08:36:12,687 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 08:36:12,688 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 08:36:12,688 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 08:36:12,688 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 08:36:12,689 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 08:36:12,689 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 08:36:12,689 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 08:36:12,690 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 08:36:12,694 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-21 08:36:12,718 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 08:36:12,719 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 08:36:12,719 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 08:36:12,719 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 08:36:12,720 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 08:36:12,720 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 08:36:12,720 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 08:36:12,720 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 08:36:12,721 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 08:36:12,721 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 08:36:12,721 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-21 08:36:12,721 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-21 08:36:12,722 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-21 08:36:12,722 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 08:36:12,722 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-21 08:36:12,722 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 08:36:12,722 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-21 08:36:12,722 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-21 08:36:12,722 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-21 08:36:12,723 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 08:36:12,723 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-21 08:36:12,723 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 08:36:12,723 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 08:36:12,723 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 08:36:12,723 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 08:36:12,724 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 08:36:12,724 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 08:36:12,724 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-21 08:36:12,724 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-21 08:36:12,724 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-21 08:36:12,724 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-21 08:36:12,724 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-21 08:36:12,725 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-21 08:36:12,725 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1e7e50acdaac6c5347f0e6861619a1b564ff01a6e5e780f6d69a20f7f739312d [2022-07-21 08:36:12,988 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 08:36:13,011 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 08:36:13,013 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 08:36:13,014 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 08:36:13,014 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 08:36:13,015 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-ext/23_lu-fig2.fixed.i [2022-07-21 08:36:13,056 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8fab992b2/2e132aec67d0439bbec321474f63dea2/FLAGa3b048825 [2022-07-21 08:36:13,452 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 08:36:13,454 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/23_lu-fig2.fixed.i [2022-07-21 08:36:13,467 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8fab992b2/2e132aec67d0439bbec321474f63dea2/FLAGa3b048825 [2022-07-21 08:36:13,803 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8fab992b2/2e132aec67d0439bbec321474f63dea2 [2022-07-21 08:36:13,805 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 08:36:13,806 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 08:36:13,808 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 08:36:13,808 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 08:36:13,813 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 08:36:13,813 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 08:36:13" (1/1) ... [2022-07-21 08:36:13,814 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@454e9c0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:36:13, skipping insertion in model container [2022-07-21 08:36:13,814 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 08:36:13" (1/1) ... [2022-07-21 08:36:13,818 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 08:36:13,851 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 08:36:14,066 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/pthread-ext/23_lu-fig2.fixed.i[30382,30395] [2022-07-21 08:36:14,071 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/pthread-ext/23_lu-fig2.fixed.i[30752,30765] [2022-07-21 08:36:14,080 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 08:36:14,084 INFO L203 MainTranslator]: Completed pre-run [2022-07-21 08:36:14,120 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/pthread-ext/23_lu-fig2.fixed.i[30382,30395] [2022-07-21 08:36:14,122 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/pthread-ext/23_lu-fig2.fixed.i[30752,30765] [2022-07-21 08:36:14,128 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 08:36:14,149 INFO L208 MainTranslator]: Completed translation [2022-07-21 08:36:14,150 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:36:14 WrapperNode [2022-07-21 08:36:14,150 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-21 08:36:14,151 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-21 08:36:14,151 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-21 08:36:14,151 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-21 08:36:14,155 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:36:14" (1/1) ... [2022-07-21 08:36:14,164 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:36:14" (1/1) ... [2022-07-21 08:36:14,177 INFO L137 Inliner]: procedures = 172, calls = 20, calls flagged for inlining = 11, calls inlined = 13, statements flattened = 88 [2022-07-21 08:36:14,178 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-21 08:36:14,178 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-21 08:36:14,178 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-21 08:36:14,178 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-21 08:36:14,183 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:36:14" (1/1) ... [2022-07-21 08:36:14,184 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:36:14" (1/1) ... [2022-07-21 08:36:14,186 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:36:14" (1/1) ... [2022-07-21 08:36:14,186 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:36:14" (1/1) ... [2022-07-21 08:36:14,196 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:36:14" (1/1) ... [2022-07-21 08:36:14,198 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:36:14" (1/1) ... [2022-07-21 08:36:14,199 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:36:14" (1/1) ... [2022-07-21 08:36:14,201 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-21 08:36:14,201 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-21 08:36:14,202 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-21 08:36:14,202 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-21 08:36:14,202 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:36:14" (1/1) ... [2022-07-21 08:36:14,206 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 08:36:14,217 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 08:36:14,226 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) [2022-07-21 08:36:14,242 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 [2022-07-21 08:36:14,251 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2022-07-21 08:36:14,251 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2022-07-21 08:36:14,251 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-21 08:36:14,251 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-21 08:36:14,251 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-21 08:36:14,251 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-21 08:36:14,252 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-21 08:36:14,252 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-21 08:36:14,252 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-21 08:36:14,253 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-07-21 08:36:14,351 INFO L234 CfgBuilder]: Building ICFG [2022-07-21 08:36:14,353 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-21 08:36:14,528 INFO L275 CfgBuilder]: Performing block encoding [2022-07-21 08:36:14,575 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-21 08:36:14,580 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-21 08:36:14,582 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 08:36:14 BoogieIcfgContainer [2022-07-21 08:36:14,582 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-21 08:36:14,584 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-21 08:36:14,584 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-21 08:36:14,586 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-21 08:36:14,586 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 08:36:13" (1/3) ... [2022-07-21 08:36:14,587 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b77caa9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 08:36:14, skipping insertion in model container [2022-07-21 08:36:14,587 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:36:14" (2/3) ... [2022-07-21 08:36:14,587 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b77caa9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 08:36:14, skipping insertion in model container [2022-07-21 08:36:14,587 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 08:36:14" (3/3) ... [2022-07-21 08:36:14,588 INFO L111 eAbstractionObserver]: Analyzing ICFG 23_lu-fig2.fixed.i [2022-07-21 08:36:14,592 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-21 08:36:14,599 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-21 08:36:14,599 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-21 08:36:14,599 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-21 08:36:14,638 INFO L135 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-07-21 08:36:14,675 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 58 places, 56 transitions, 117 flow [2022-07-21 08:36:14,705 INFO L129 PetriNetUnfolder]: 2/55 cut-off events. [2022-07-21 08:36:14,705 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-07-21 08:36:14,708 INFO L84 FinitePrefix]: Finished finitePrefix Result has 59 conditions, 55 events. 2/55 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 21 event pairs, 0 based on Foata normal form. 0/51 useless extension candidates. Maximal degree in co-relation 34. Up to 2 conditions per place. [2022-07-21 08:36:14,708 INFO L82 GeneralOperation]: Start removeDead. Operand has 58 places, 56 transitions, 117 flow [2022-07-21 08:36:14,712 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 57 places, 55 transitions, 113 flow [2022-07-21 08:36:14,723 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-21 08:36:14,727 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@e2b8904, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@98db0c1 [2022-07-21 08:36:14,727 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-07-21 08:36:14,732 INFO L129 PetriNetUnfolder]: 0/29 cut-off events. [2022-07-21 08:36:14,732 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-07-21 08:36:14,732 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:36:14,733 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:36:14,734 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-21 08:36:14,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:36:14,737 INFO L85 PathProgramCache]: Analyzing trace with hash 33523167, now seen corresponding path program 1 times [2022-07-21 08:36:14,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:36:14,743 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693057042] [2022-07-21 08:36:14,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:36:14,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:36:14,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:36:14,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:36:14,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:36:14,947 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1693057042] [2022-07-21 08:36:14,948 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1693057042] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:36:14,948 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:36:14,948 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-21 08:36:14,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128995628] [2022-07-21 08:36:14,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:36:14,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 08:36:14,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:36:14,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 08:36:14,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 08:36:14,983 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 56 [2022-07-21 08:36:14,986 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 55 transitions, 113 flow. Second operand has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 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) [2022-07-21 08:36:14,986 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:36:14,986 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 56 [2022-07-21 08:36:14,987 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:36:15,039 INFO L129 PetriNetUnfolder]: 11/86 cut-off events. [2022-07-21 08:36:15,040 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-07-21 08:36:15,040 INFO L84 FinitePrefix]: Finished finitePrefix Result has 120 conditions, 86 events. 11/86 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 118 event pairs, 7 based on Foata normal form. 2/83 useless extension candidates. Maximal degree in co-relation 92. Up to 18 conditions per place. [2022-07-21 08:36:15,042 INFO L132 encePairwiseOnDemand]: 51/56 looper letters, 9 selfloop transitions, 2 changer transitions 11/56 dead transitions. [2022-07-21 08:36:15,042 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 56 transitions, 139 flow [2022-07-21 08:36:15,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 08:36:15,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-21 08:36:15,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 151 transitions. [2022-07-21 08:36:15,054 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8988095238095238 [2022-07-21 08:36:15,054 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 151 transitions. [2022-07-21 08:36:15,055 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 151 transitions. [2022-07-21 08:36:15,056 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:36:15,057 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 151 transitions. [2022-07-21 08:36:15,063 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 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) [2022-07-21 08:36:15,067 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 56.0) internal successors, (224), 4 states have internal predecessors, (224), 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) [2022-07-21 08:36:15,068 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 56.0) internal successors, (224), 4 states have internal predecessors, (224), 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) [2022-07-21 08:36:15,069 INFO L186 Difference]: Start difference. First operand has 57 places, 55 transitions, 113 flow. Second operand 3 states and 151 transitions. [2022-07-21 08:36:15,069 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 56 transitions, 139 flow [2022-07-21 08:36:15,072 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 56 transitions, 138 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-07-21 08:36:15,077 INFO L242 Difference]: Finished difference. Result has 57 places, 42 transitions, 90 flow [2022-07-21 08:36:15,078 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=90, PETRI_PLACES=57, PETRI_TRANSITIONS=42} [2022-07-21 08:36:15,082 INFO L279 CegarLoopForPetriNet]: 57 programPoint places, 0 predicate places. [2022-07-21 08:36:15,082 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 42 transitions, 90 flow [2022-07-21 08:36:15,083 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 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) [2022-07-21 08:36:15,083 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:36:15,083 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:36:15,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-21 08:36:15,084 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-21 08:36:15,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:36:15,085 INFO L85 PathProgramCache]: Analyzing trace with hash 2076482913, now seen corresponding path program 1 times [2022-07-21 08:36:15,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:36:15,085 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892064406] [2022-07-21 08:36:15,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:36:15,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:36:15,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:36:15,142 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:36:15,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:36:15,142 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892064406] [2022-07-21 08:36:15,142 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [892064406] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:36:15,143 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:36:15,143 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 08:36:15,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105948478] [2022-07-21 08:36:15,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:36:15,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 08:36:15,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:36:15,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 08:36:15,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 08:36:15,145 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 56 [2022-07-21 08:36:15,151 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 42 transitions, 90 flow. Second operand has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 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) [2022-07-21 08:36:15,151 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:36:15,152 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 56 [2022-07-21 08:36:15,152 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:36:15,186 INFO L129 PetriNetUnfolder]: 21/81 cut-off events. [2022-07-21 08:36:15,187 INFO L130 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2022-07-21 08:36:15,190 INFO L84 FinitePrefix]: Finished finitePrefix Result has 140 conditions, 81 events. 21/81 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 124 event pairs, 8 based on Foata normal form. 0/72 useless extension candidates. Maximal degree in co-relation 111. Up to 30 conditions per place. [2022-07-21 08:36:15,190 INFO L132 encePairwiseOnDemand]: 52/56 looper letters, 9 selfloop transitions, 2 changer transitions 3/45 dead transitions. [2022-07-21 08:36:15,191 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 45 transitions, 126 flow [2022-07-21 08:36:15,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 08:36:15,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-21 08:36:15,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 141 transitions. [2022-07-21 08:36:15,194 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8392857142857143 [2022-07-21 08:36:15,194 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 141 transitions. [2022-07-21 08:36:15,195 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 141 transitions. [2022-07-21 08:36:15,195 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:36:15,195 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 141 transitions. [2022-07-21 08:36:15,196 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 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) [2022-07-21 08:36:15,197 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 56.0) internal successors, (224), 4 states have internal predecessors, (224), 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) [2022-07-21 08:36:15,197 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 56.0) internal successors, (224), 4 states have internal predecessors, (224), 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) [2022-07-21 08:36:15,198 INFO L186 Difference]: Start difference. First operand has 57 places, 42 transitions, 90 flow. Second operand 3 states and 141 transitions. [2022-07-21 08:36:15,198 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 45 transitions, 126 flow [2022-07-21 08:36:15,199 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 45 transitions, 120 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-07-21 08:36:15,200 INFO L242 Difference]: Finished difference. Result has 48 places, 42 transitions, 98 flow [2022-07-21 08:36:15,200 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=98, PETRI_PLACES=48, PETRI_TRANSITIONS=42} [2022-07-21 08:36:15,201 INFO L279 CegarLoopForPetriNet]: 57 programPoint places, -9 predicate places. [2022-07-21 08:36:15,201 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 42 transitions, 98 flow [2022-07-21 08:36:15,201 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 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) [2022-07-21 08:36:15,201 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:36:15,201 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:36:15,202 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-21 08:36:15,202 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-21 08:36:15,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:36:15,203 INFO L85 PathProgramCache]: Analyzing trace with hash 1459735523, now seen corresponding path program 1 times [2022-07-21 08:36:15,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:36:15,204 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [111343978] [2022-07-21 08:36:15,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:36:15,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:36:15,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:36:15,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:36:15,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:36:15,322 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [111343978] [2022-07-21 08:36:15,322 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [111343978] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:36:15,322 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:36:15,323 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 08:36:15,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797221191] [2022-07-21 08:36:15,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:36:15,323 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 08:36:15,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:36:15,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 08:36:15,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-21 08:36:15,324 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 56 [2022-07-21 08:36:15,325 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 42 transitions, 98 flow. Second operand has 4 states, 4 states have (on average 43.25) internal successors, (173), 4 states have internal predecessors, (173), 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) [2022-07-21 08:36:15,325 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:36:15,325 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 56 [2022-07-21 08:36:15,325 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:36:15,346 INFO L129 PetriNetUnfolder]: 8/60 cut-off events. [2022-07-21 08:36:15,346 INFO L130 PetriNetUnfolder]: For 12/17 co-relation queries the response was YES. [2022-07-21 08:36:15,347 INFO L84 FinitePrefix]: Finished finitePrefix Result has 108 conditions, 60 events. 8/60 cut-off events. For 12/17 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 58 event pairs, 1 based on Foata normal form. 2/61 useless extension candidates. Maximal degree in co-relation 76. Up to 14 conditions per place. [2022-07-21 08:36:15,347 INFO L132 encePairwiseOnDemand]: 49/56 looper letters, 8 selfloop transitions, 8 changer transitions 0/46 dead transitions. [2022-07-21 08:36:15,347 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 46 transitions, 144 flow [2022-07-21 08:36:15,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-21 08:36:15,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-07-21 08:36:15,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 181 transitions. [2022-07-21 08:36:15,348 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8080357142857143 [2022-07-21 08:36:15,349 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 181 transitions. [2022-07-21 08:36:15,349 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 181 transitions. [2022-07-21 08:36:15,349 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:36:15,349 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 181 transitions. [2022-07-21 08:36:15,350 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 45.25) internal successors, (181), 4 states have internal predecessors, (181), 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) [2022-07-21 08:36:15,350 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 56.0) internal successors, (280), 5 states have internal predecessors, (280), 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) [2022-07-21 08:36:15,350 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 56.0) internal successors, (280), 5 states have internal predecessors, (280), 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) [2022-07-21 08:36:15,351 INFO L186 Difference]: Start difference. First operand has 48 places, 42 transitions, 98 flow. Second operand 4 states and 181 transitions. [2022-07-21 08:36:15,351 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 46 transitions, 144 flow [2022-07-21 08:36:15,351 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 46 transitions, 140 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-07-21 08:36:15,352 INFO L242 Difference]: Finished difference. Result has 50 places, 44 transitions, 125 flow [2022-07-21 08:36:15,352 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=125, PETRI_PLACES=50, PETRI_TRANSITIONS=44} [2022-07-21 08:36:15,353 INFO L279 CegarLoopForPetriNet]: 57 programPoint places, -7 predicate places. [2022-07-21 08:36:15,353 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 44 transitions, 125 flow [2022-07-21 08:36:15,353 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 43.25) internal successors, (173), 4 states have internal predecessors, (173), 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) [2022-07-21 08:36:15,353 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:36:15,353 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:36:15,354 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-21 08:36:15,354 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-21 08:36:15,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:36:15,354 INFO L85 PathProgramCache]: Analyzing trace with hash 1330142114, now seen corresponding path program 1 times [2022-07-21 08:36:15,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:36:15,355 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254705609] [2022-07-21 08:36:15,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:36:15,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:36:15,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:36:15,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:36:15,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:36:15,397 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1254705609] [2022-07-21 08:36:15,398 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1254705609] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:36:15,398 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:36:15,398 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 08:36:15,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008092854] [2022-07-21 08:36:15,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:36:15,399 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 08:36:15,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:36:15,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 08:36:15,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 08:36:15,400 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 56 [2022-07-21 08:36:15,400 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 44 transitions, 125 flow. Second operand has 4 states, 4 states have (on average 47.0) internal successors, (188), 4 states have internal predecessors, (188), 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) [2022-07-21 08:36:15,400 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:36:15,400 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 56 [2022-07-21 08:36:15,400 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:36:15,413 INFO L129 PetriNetUnfolder]: 4/51 cut-off events. [2022-07-21 08:36:15,413 INFO L130 PetriNetUnfolder]: For 8/11 co-relation queries the response was YES. [2022-07-21 08:36:15,413 INFO L84 FinitePrefix]: Finished finitePrefix Result has 92 conditions, 51 events. 4/51 cut-off events. For 8/11 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 32 event pairs, 0 based on Foata normal form. 2/53 useless extension candidates. Maximal degree in co-relation 59. Up to 7 conditions per place. [2022-07-21 08:36:15,413 INFO L132 encePairwiseOnDemand]: 53/56 looper letters, 0 selfloop transitions, 0 changer transitions 43/43 dead transitions. [2022-07-21 08:36:15,414 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 43 transitions, 139 flow [2022-07-21 08:36:15,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-21 08:36:15,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-07-21 08:36:15,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 188 transitions. [2022-07-21 08:36:15,415 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8392857142857143 [2022-07-21 08:36:15,415 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 188 transitions. [2022-07-21 08:36:15,415 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 188 transitions. [2022-07-21 08:36:15,415 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:36:15,415 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 188 transitions. [2022-07-21 08:36:15,416 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 47.0) internal successors, (188), 4 states have internal predecessors, (188), 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) [2022-07-21 08:36:15,417 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 56.0) internal successors, (280), 5 states have internal predecessors, (280), 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) [2022-07-21 08:36:15,417 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 56.0) internal successors, (280), 5 states have internal predecessors, (280), 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) [2022-07-21 08:36:15,417 INFO L186 Difference]: Start difference. First operand has 50 places, 44 transitions, 125 flow. Second operand 4 states and 188 transitions. [2022-07-21 08:36:15,417 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 43 transitions, 139 flow [2022-07-21 08:36:15,418 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 43 transitions, 134 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-07-21 08:36:15,418 INFO L242 Difference]: Finished difference. Result has 51 places, 0 transitions, 0 flow [2022-07-21 08:36:15,419 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=51, PETRI_TRANSITIONS=0} [2022-07-21 08:36:15,419 INFO L279 CegarLoopForPetriNet]: 57 programPoint places, -6 predicate places. [2022-07-21 08:36:15,419 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 0 transitions, 0 flow [2022-07-21 08:36:15,420 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 47.0) internal successors, (188), 4 states have internal predecessors, (188), 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) [2022-07-21 08:36:15,435 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2022-07-21 08:36:15,436 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 4 remaining) [2022-07-21 08:36:15,436 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2022-07-21 08:36:15,436 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 4 remaining) [2022-07-21 08:36:15,436 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-21 08:36:15,436 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2022-07-21 08:36:15,440 INFO L226 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-07-21 08:36:15,440 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-21 08:36:15,444 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 08:36:15 BasicIcfg [2022-07-21 08:36:15,444 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-21 08:36:15,444 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-21 08:36:15,444 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-21 08:36:15,444 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-21 08:36:15,445 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 08:36:14" (3/4) ... [2022-07-21 08:36:15,446 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-07-21 08:36:15,449 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thr1 [2022-07-21 08:36:15,452 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 40 nodes and edges [2022-07-21 08:36:15,452 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 16 nodes and edges [2022-07-21 08:36:15,453 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2022-07-21 08:36:15,453 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-07-21 08:36:15,475 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-21 08:36:15,476 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-21 08:36:15,476 INFO L158 Benchmark]: Toolchain (without parser) took 1669.99ms. Allocated memory was 62.9MB in the beginning and 79.7MB in the end (delta: 16.8MB). Free memory was 42.2MB in the beginning and 31.4MB in the end (delta: 10.8MB). Peak memory consumption was 26.1MB. Max. memory is 16.1GB. [2022-07-21 08:36:15,476 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 62.9MB. Free memory was 45.0MB in the beginning and 45.0MB in the end (delta: 44.1kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-21 08:36:15,477 INFO L158 Benchmark]: CACSL2BoogieTranslator took 342.13ms. Allocated memory is still 62.9MB. Free memory was 41.9MB in the beginning and 37.7MB in the end (delta: 4.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-07-21 08:36:15,477 INFO L158 Benchmark]: Boogie Procedure Inliner took 27.00ms. Allocated memory is still 62.9MB. Free memory was 37.7MB in the beginning and 35.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-21 08:36:15,477 INFO L158 Benchmark]: Boogie Preprocessor took 22.84ms. Allocated memory is still 62.9MB. Free memory was 35.5MB in the beginning and 34.1MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-21 08:36:15,478 INFO L158 Benchmark]: RCFGBuilder took 380.78ms. Allocated memory was 62.9MB in the beginning and 79.7MB in the end (delta: 16.8MB). Free memory was 34.1MB in the beginning and 52.3MB in the end (delta: -18.2MB). Peak memory consumption was 9.9MB. Max. memory is 16.1GB. [2022-07-21 08:36:15,478 INFO L158 Benchmark]: TraceAbstraction took 860.24ms. Allocated memory is still 79.7MB. Free memory was 51.8MB in the beginning and 34.6MB in the end (delta: 17.2MB). Peak memory consumption was 18.8MB. Max. memory is 16.1GB. [2022-07-21 08:36:15,478 INFO L158 Benchmark]: Witness Printer took 31.64ms. Allocated memory is still 79.7MB. Free memory was 34.6MB in the beginning and 31.4MB in the end (delta: 3.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-21 08:36:15,479 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 62.9MB. Free memory was 45.0MB in the beginning and 45.0MB in the end (delta: 44.1kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 342.13ms. Allocated memory is still 62.9MB. Free memory was 41.9MB in the beginning and 37.7MB in the end (delta: 4.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 27.00ms. Allocated memory is still 62.9MB. Free memory was 37.7MB in the beginning and 35.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 22.84ms. Allocated memory is still 62.9MB. Free memory was 35.5MB in the beginning and 34.1MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 380.78ms. Allocated memory was 62.9MB in the beginning and 79.7MB in the end (delta: 16.8MB). Free memory was 34.1MB in the beginning and 52.3MB in the end (delta: -18.2MB). Peak memory consumption was 9.9MB. Max. memory is 16.1GB. * TraceAbstraction took 860.24ms. Allocated memory is still 79.7MB. Free memory was 51.8MB in the beginning and 34.6MB in the end (delta: 17.2MB). Peak memory consumption was 18.8MB. Max. memory is 16.1GB. * Witness Printer took 31.64ms. Allocated memory is still 79.7MB. Free memory was 34.6MB in the beginning and 31.4MB in the end (delta: 3.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 707]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 721]: 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 3 procedures, 66 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 0.8s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 12 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 12 mSDsluCounter, 13 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 17 mSDsCounter, 7 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 60 IncrementalHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 7 mSolverCounterUnsat, 11 mSDtfsCounter, 60 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=125occurred in iteration=3, InterpolantAutomatonStates: 14, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 135 NumberOfCodeBlocks, 135 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 131 ConstructedInterpolants, 0 QuantifiedInterpolants, 338 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 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 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-07-21 08:36:15,514 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE