./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/parallel-bluetooth.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version ff03de63 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/weaver/parallel-bluetooth.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 75c86508b929748d0860a2261aae2f86897f25a70c1055933792f6abb004bc7e --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ff03de6 [2021-12-21 15:18:10,742 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-21 15:18:10,744 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-21 15:18:10,782 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-21 15:18:10,783 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-21 15:18:10,785 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-21 15:18:10,787 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-21 15:18:10,792 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-21 15:18:10,793 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-21 15:18:10,794 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-21 15:18:10,795 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-21 15:18:10,796 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-21 15:18:10,796 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-21 15:18:10,801 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-21 15:18:10,802 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-21 15:18:10,803 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-21 15:18:10,804 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-21 15:18:10,806 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-21 15:18:10,807 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-21 15:18:10,810 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-21 15:18:10,814 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-21 15:18:10,815 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-21 15:18:10,815 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-21 15:18:10,816 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-21 15:18:10,818 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-21 15:18:10,819 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-21 15:18:10,819 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-21 15:18:10,819 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-21 15:18:10,820 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-21 15:18:10,821 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-21 15:18:10,821 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-21 15:18:10,822 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-21 15:18:10,823 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-21 15:18:10,823 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-21 15:18:10,824 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-21 15:18:10,825 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-21 15:18:10,825 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-21 15:18:10,826 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-21 15:18:10,826 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-21 15:18:10,827 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-21 15:18:10,827 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-21 15:18:10,828 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-21 15:18:10,854 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-21 15:18:10,854 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-21 15:18:10,855 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-21 15:18:10,855 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-21 15:18:10,856 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-21 15:18:10,856 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-21 15:18:10,856 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-21 15:18:10,857 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-21 15:18:10,857 INFO L138 SettingsManager]: * Use SBE=true [2021-12-21 15:18:10,857 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-21 15:18:10,858 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-21 15:18:10,858 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-21 15:18:10,858 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-21 15:18:10,858 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-21 15:18:10,858 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-21 15:18:10,858 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-21 15:18:10,858 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-21 15:18:10,858 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-21 15:18:10,859 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-21 15:18:10,859 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-21 15:18:10,859 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-21 15:18:10,860 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-21 15:18:10,860 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-21 15:18:10,860 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-21 15:18:10,860 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 15:18:10,861 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-21 15:18:10,861 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-21 15:18:10,862 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-21 15:18:10,862 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-21 15:18:10,862 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-21 15:18:10,862 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-21 15:18:10,862 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-21 15:18:10,862 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-21 15:18:10,863 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-21 15:18:10,863 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 75c86508b929748d0860a2261aae2f86897f25a70c1055933792f6abb004bc7e [2021-12-21 15:18:11,022 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-21 15:18:11,041 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-21 15:18:11,043 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-21 15:18:11,044 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-21 15:18:11,044 INFO L275 PluginConnector]: CDTParser initialized [2021-12-21 15:18:11,045 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/parallel-bluetooth.wvr.c [2021-12-21 15:18:11,096 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5952ddafc/d6952aa84d59425ab6fef4012240d93a/FLAGb055148e9 [2021-12-21 15:18:11,493 INFO L306 CDTParser]: Found 1 translation units. [2021-12-21 15:18:11,494 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-bluetooth.wvr.c [2021-12-21 15:18:11,503 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5952ddafc/d6952aa84d59425ab6fef4012240d93a/FLAGb055148e9 [2021-12-21 15:18:11,515 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5952ddafc/d6952aa84d59425ab6fef4012240d93a [2021-12-21 15:18:11,518 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-21 15:18:11,520 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-21 15:18:11,521 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-21 15:18:11,521 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-21 15:18:11,523 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-21 15:18:11,524 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 03:18:11" (1/1) ... [2021-12-21 15:18:11,524 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@190d54b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:18:11, skipping insertion in model container [2021-12-21 15:18:11,525 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 03:18:11" (1/1) ... [2021-12-21 15:18:11,529 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-21 15:18:11,547 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-21 15:18:11,668 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/weaver/parallel-bluetooth.wvr.c[3134,3147] [2021-12-21 15:18:11,670 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 15:18:11,676 INFO L203 MainTranslator]: Completed pre-run [2021-12-21 15:18:11,693 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/weaver/parallel-bluetooth.wvr.c[3134,3147] [2021-12-21 15:18:11,694 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 15:18:11,706 INFO L208 MainTranslator]: Completed translation [2021-12-21 15:18:11,707 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:18:11 WrapperNode [2021-12-21 15:18:11,707 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-21 15:18:11,708 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-21 15:18:11,708 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-21 15:18:11,709 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-21 15:18:11,714 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:18:11" (1/1) ... [2021-12-21 15:18:11,728 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:18:11" (1/1) ... [2021-12-21 15:18:11,752 INFO L137 Inliner]: procedures = 21, calls = 48, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 119 [2021-12-21 15:18:11,753 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-21 15:18:11,754 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-21 15:18:11,754 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-21 15:18:11,754 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-21 15:18:11,759 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:18:11" (1/1) ... [2021-12-21 15:18:11,759 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:18:11" (1/1) ... [2021-12-21 15:18:11,770 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:18:11" (1/1) ... [2021-12-21 15:18:11,771 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:18:11" (1/1) ... [2021-12-21 15:18:11,778 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:18:11" (1/1) ... [2021-12-21 15:18:11,787 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:18:11" (1/1) ... [2021-12-21 15:18:11,788 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:18:11" (1/1) ... [2021-12-21 15:18:11,793 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-21 15:18:11,794 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-21 15:18:11,795 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-21 15:18:11,795 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-21 15:18:11,797 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:18:11" (1/1) ... [2021-12-21 15:18:11,802 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 15:18:11,811 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 15:18:11,822 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-21 15:18:11,836 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-21 15:18:11,854 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-21 15:18:11,854 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-12-21 15:18:11,854 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-12-21 15:18:11,854 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-12-21 15:18:11,855 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-12-21 15:18:11,855 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-21 15:18:11,855 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-21 15:18:11,855 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-21 15:18:11,855 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-12-21 15:18:11,855 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-12-21 15:18:11,855 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-21 15:18:11,855 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-21 15:18:11,856 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-21 15:18:11,856 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-21 15:18:11,857 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-12-21 15:18:11,932 INFO L234 CfgBuilder]: Building ICFG [2021-12-21 15:18:11,933 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-21 15:18:12,121 INFO L275 CfgBuilder]: Performing block encoding [2021-12-21 15:18:12,158 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-21 15:18:12,159 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-21 15:18:12,160 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 03:18:12 BoogieIcfgContainer [2021-12-21 15:18:12,160 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-21 15:18:12,161 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-21 15:18:12,162 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-21 15:18:12,164 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-21 15:18:12,164 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 03:18:11" (1/3) ... [2021-12-21 15:18:12,165 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78e788cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 03:18:12, skipping insertion in model container [2021-12-21 15:18:12,165 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:18:11" (2/3) ... [2021-12-21 15:18:12,165 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78e788cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 03:18:12, skipping insertion in model container [2021-12-21 15:18:12,165 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 03:18:12" (3/3) ... [2021-12-21 15:18:12,166 INFO L111 eAbstractionObserver]: Analyzing ICFG parallel-bluetooth.wvr.c [2021-12-21 15:18:12,170 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-12-21 15:18:12,170 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-21 15:18:12,170 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-21 15:18:12,170 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-12-21 15:18:12,196 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:18:12,196 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:18:12,197 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:18:12,197 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:18:12,197 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~cond~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:18:12,197 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~cond~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:18:12,198 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~cond~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:18:12,198 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~cond~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:18:12,198 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~cond~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:18:12,198 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~cond~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:18:12,199 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:18:12,199 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:18:12,199 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:18:12,199 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:18:12,200 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:18:12,200 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:18:12,200 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:18:12,200 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:18:12,200 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~cond~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:18:12,201 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~cond~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:18:12,201 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~cond~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:18:12,201 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~cond~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:18:12,201 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~cond~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:18:12,201 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~cond~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:18:12,202 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:18:12,202 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:18:12,202 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:18:12,202 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:18:12,202 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:18:12,203 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:18:12,203 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:18:12,203 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:18:12,205 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:18:12,205 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:18:12,206 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:18:12,206 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:18:12,206 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~cond~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:18:12,207 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:18:12,207 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~cond~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:18:12,207 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:18:12,207 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:18:12,207 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:18:12,207 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:18:12,207 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:18:12,210 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-12-21 15:18:12,260 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-21 15:18:12,265 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-21 15:18:12,265 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-12-21 15:18:12,273 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 137 places, 139 transitions, 294 flow [2021-12-21 15:18:12,344 INFO L129 PetriNetUnfolder]: 9/137 cut-off events. [2021-12-21 15:18:12,345 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-12-21 15:18:12,347 INFO L84 FinitePrefix]: Finished finitePrefix Result has 146 conditions, 137 events. 9/137 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 47 event pairs, 0 based on Foata normal form. 0/127 useless extension candidates. Maximal degree in co-relation 101. Up to 2 conditions per place. [2021-12-21 15:18:12,348 INFO L82 GeneralOperation]: Start removeDead. Operand has 137 places, 139 transitions, 294 flow [2021-12-21 15:18:12,351 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 126 places, 128 transitions, 268 flow [2021-12-21 15:18:12,370 INFO L129 PetriNetUnfolder]: 9/127 cut-off events. [2021-12-21 15:18:12,371 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-12-21 15:18:12,373 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-21 15:18:12,374 INFO L254 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, 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, 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] [2021-12-21 15:18:12,374 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-21 15:18:12,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:18:12,380 INFO L85 PathProgramCache]: Analyzing trace with hash -832133839, now seen corresponding path program 1 times [2021-12-21 15:18:12,386 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:18:12,387 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014511528] [2021-12-21 15:18:12,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:18:12,388 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:18:12,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:18:12,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 15:18:12,738 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:18:12,739 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2014511528] [2021-12-21 15:18:12,739 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2014511528] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:18:12,739 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 15:18:12,740 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-21 15:18:12,741 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718727038] [2021-12-21 15:18:12,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:18:12,748 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-21 15:18:12,748 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:18:12,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-21 15:18:12,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-21 15:18:12,778 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 139 [2021-12-21 15:18:12,783 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 128 transitions, 268 flow. Second operand has 5 states, 5 states have (on average 90.8) internal successors, (454), 5 states have internal predecessors, (454), 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) [2021-12-21 15:18:12,784 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-21 15:18:12,786 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 139 [2021-12-21 15:18:12,787 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-21 15:18:12,961 INFO L129 PetriNetUnfolder]: 26/216 cut-off events. [2021-12-21 15:18:12,961 INFO L130 PetriNetUnfolder]: For 38/38 co-relation queries the response was YES. [2021-12-21 15:18:12,962 INFO L84 FinitePrefix]: Finished finitePrefix Result has 337 conditions, 216 events. 26/216 cut-off events. For 38/38 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 510 event pairs, 8 based on Foata normal form. 11/208 useless extension candidates. Maximal degree in co-relation 167. Up to 54 conditions per place. [2021-12-21 15:18:12,964 INFO L132 encePairwiseOnDemand]: 120/139 looper letters, 42 selfloop transitions, 7 changer transitions 7/129 dead transitions. [2021-12-21 15:18:12,964 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 129 transitions, 388 flow [2021-12-21 15:18:12,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-21 15:18:12,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-12-21 15:18:12,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 562 transitions. [2021-12-21 15:18:12,978 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6738609112709832 [2021-12-21 15:18:12,990 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 562 transitions. [2021-12-21 15:18:12,991 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 562 transitions. [2021-12-21 15:18:12,994 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-21 15:18:12,996 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 562 transitions. [2021-12-21 15:18:13,000 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 93.66666666666667) internal successors, (562), 6 states have internal predecessors, (562), 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) [2021-12-21 15:18:13,010 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 139.0) internal successors, (973), 7 states have internal predecessors, (973), 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) [2021-12-21 15:18:13,011 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 139.0) internal successors, (973), 7 states have internal predecessors, (973), 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) [2021-12-21 15:18:13,013 INFO L186 Difference]: Start difference. First operand has 126 places, 128 transitions, 268 flow. Second operand 6 states and 562 transitions. [2021-12-21 15:18:13,013 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 129 transitions, 388 flow [2021-12-21 15:18:13,018 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 129 transitions, 376 flow, removed 0 selfloop flow, removed 4 redundant places. [2021-12-21 15:18:13,021 INFO L242 Difference]: Finished difference. Result has 128 places, 116 transitions, 261 flow [2021-12-21 15:18:13,023 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=246, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=261, PETRI_PLACES=128, PETRI_TRANSITIONS=116} [2021-12-21 15:18:13,026 INFO L334 CegarLoopForPetriNet]: 126 programPoint places, 2 predicate places. [2021-12-21 15:18:13,026 INFO L470 AbstractCegarLoop]: Abstraction has has 128 places, 116 transitions, 261 flow [2021-12-21 15:18:13,027 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 90.8) internal successors, (454), 5 states have internal predecessors, (454), 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) [2021-12-21 15:18:13,027 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-21 15:18:13,027 INFO L254 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, 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, 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] [2021-12-21 15:18:13,028 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-21 15:18:13,028 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-21 15:18:13,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:18:13,028 INFO L85 PathProgramCache]: Analyzing trace with hash 1917017462, now seen corresponding path program 1 times [2021-12-21 15:18:13,029 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:18:13,029 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [688079262] [2021-12-21 15:18:13,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:18:13,029 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:18:13,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:18:13,262 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 15:18:13,262 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:18:13,262 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [688079262] [2021-12-21 15:18:13,262 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [688079262] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:18:13,263 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 15:18:13,263 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-21 15:18:13,263 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256345011] [2021-12-21 15:18:13,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:18:13,264 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-21 15:18:13,264 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:18:13,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-21 15:18:13,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2021-12-21 15:18:13,266 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 139 [2021-12-21 15:18:13,267 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 116 transitions, 261 flow. Second operand has 11 states, 11 states have (on average 82.0909090909091) internal successors, (903), 11 states have internal predecessors, (903), 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) [2021-12-21 15:18:13,267 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-21 15:18:13,267 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 139 [2021-12-21 15:18:13,267 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-21 15:18:13,486 INFO L129 PetriNetUnfolder]: 57/334 cut-off events. [2021-12-21 15:18:13,486 INFO L130 PetriNetUnfolder]: For 33/33 co-relation queries the response was YES. [2021-12-21 15:18:13,487 INFO L84 FinitePrefix]: Finished finitePrefix Result has 551 conditions, 334 events. 57/334 cut-off events. For 33/33 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1307 event pairs, 29 based on Foata normal form. 0/311 useless extension candidates. Maximal degree in co-relation 270. Up to 87 conditions per place. [2021-12-21 15:18:13,489 INFO L132 encePairwiseOnDemand]: 127/139 looper letters, 61 selfloop transitions, 17 changer transitions 0/148 dead transitions. [2021-12-21 15:18:13,489 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 148 transitions, 489 flow [2021-12-21 15:18:13,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-21 15:18:13,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2021-12-21 15:18:13,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1016 transitions. [2021-12-21 15:18:13,493 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6091127098321343 [2021-12-21 15:18:13,493 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1016 transitions. [2021-12-21 15:18:13,493 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1016 transitions. [2021-12-21 15:18:13,493 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-21 15:18:13,494 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1016 transitions. [2021-12-21 15:18:13,496 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 84.66666666666667) internal successors, (1016), 12 states have internal predecessors, (1016), 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) [2021-12-21 15:18:13,499 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 139.0) internal successors, (1807), 13 states have internal predecessors, (1807), 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) [2021-12-21 15:18:13,500 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 139.0) internal successors, (1807), 13 states have internal predecessors, (1807), 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) [2021-12-21 15:18:13,500 INFO L186 Difference]: Start difference. First operand has 128 places, 116 transitions, 261 flow. Second operand 12 states and 1016 transitions. [2021-12-21 15:18:13,500 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 148 transitions, 489 flow [2021-12-21 15:18:13,502 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 148 transitions, 480 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-12-21 15:18:13,505 INFO L242 Difference]: Finished difference. Result has 131 places, 128 transitions, 333 flow [2021-12-21 15:18:13,505 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=252, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=333, PETRI_PLACES=131, PETRI_TRANSITIONS=128} [2021-12-21 15:18:13,506 INFO L334 CegarLoopForPetriNet]: 126 programPoint places, 5 predicate places. [2021-12-21 15:18:13,506 INFO L470 AbstractCegarLoop]: Abstraction has has 131 places, 128 transitions, 333 flow [2021-12-21 15:18:13,507 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 82.0909090909091) internal successors, (903), 11 states have internal predecessors, (903), 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) [2021-12-21 15:18:13,507 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-21 15:18:13,507 INFO L254 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, 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, 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] [2021-12-21 15:18:13,507 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-21 15:18:13,508 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-21 15:18:13,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:18:13,508 INFO L85 PathProgramCache]: Analyzing trace with hash -815040470, now seen corresponding path program 2 times [2021-12-21 15:18:13,509 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:18:13,509 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105033631] [2021-12-21 15:18:13,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:18:13,509 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:18:13,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:18:13,692 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 15:18:13,693 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:18:13,693 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1105033631] [2021-12-21 15:18:13,694 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1105033631] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:18:13,694 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 15:18:13,694 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-21 15:18:13,695 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588740974] [2021-12-21 15:18:13,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:18:13,697 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-21 15:18:13,697 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:18:13,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-21 15:18:13,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-12-21 15:18:13,700 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 139 [2021-12-21 15:18:13,701 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 128 transitions, 333 flow. Second operand has 10 states, 10 states have (on average 85.2) internal successors, (852), 10 states have internal predecessors, (852), 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) [2021-12-21 15:18:13,701 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-21 15:18:13,701 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 139 [2021-12-21 15:18:13,702 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-21 15:18:13,880 INFO L129 PetriNetUnfolder]: 59/400 cut-off events. [2021-12-21 15:18:13,880 INFO L130 PetriNetUnfolder]: For 99/101 co-relation queries the response was YES. [2021-12-21 15:18:13,881 INFO L84 FinitePrefix]: Finished finitePrefix Result has 713 conditions, 400 events. 59/400 cut-off events. For 99/101 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 1904 event pairs, 4 based on Foata normal form. 4/389 useless extension candidates. Maximal degree in co-relation 500. Up to 71 conditions per place. [2021-12-21 15:18:13,882 INFO L132 encePairwiseOnDemand]: 128/139 looper letters, 54 selfloop transitions, 31 changer transitions 0/159 dead transitions. [2021-12-21 15:18:13,883 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 159 transitions, 606 flow [2021-12-21 15:18:13,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-21 15:18:13,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-12-21 15:18:13,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 964 transitions. [2021-12-21 15:18:13,885 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6304774362328319 [2021-12-21 15:18:13,885 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 964 transitions. [2021-12-21 15:18:13,885 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 964 transitions. [2021-12-21 15:18:13,886 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-21 15:18:13,886 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 964 transitions. [2021-12-21 15:18:13,888 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 87.63636363636364) internal successors, (964), 11 states have internal predecessors, (964), 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) [2021-12-21 15:18:13,890 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 139.0) internal successors, (1668), 12 states have internal predecessors, (1668), 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) [2021-12-21 15:18:13,890 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 139.0) internal successors, (1668), 12 states have internal predecessors, (1668), 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) [2021-12-21 15:18:13,890 INFO L186 Difference]: Start difference. First operand has 131 places, 128 transitions, 333 flow. Second operand 11 states and 964 transitions. [2021-12-21 15:18:13,890 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 159 transitions, 606 flow [2021-12-21 15:18:13,893 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 159 transitions, 600 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-12-21 15:18:13,897 INFO L242 Difference]: Finished difference. Result has 140 places, 140 transitions, 461 flow [2021-12-21 15:18:13,898 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=327, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=461, PETRI_PLACES=140, PETRI_TRANSITIONS=140} [2021-12-21 15:18:13,902 INFO L334 CegarLoopForPetriNet]: 126 programPoint places, 14 predicate places. [2021-12-21 15:18:13,902 INFO L470 AbstractCegarLoop]: Abstraction has has 140 places, 140 transitions, 461 flow [2021-12-21 15:18:13,903 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 85.2) internal successors, (852), 10 states have internal predecessors, (852), 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) [2021-12-21 15:18:13,903 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-21 15:18:13,903 INFO L254 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, 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, 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] [2021-12-21 15:18:13,903 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-21 15:18:13,903 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-21 15:18:13,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:18:13,906 INFO L85 PathProgramCache]: Analyzing trace with hash -349745785, now seen corresponding path program 1 times [2021-12-21 15:18:13,906 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:18:13,914 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1800991520] [2021-12-21 15:18:13,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:18:13,914 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:18:13,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:18:14,146 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 15:18:14,146 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:18:14,146 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1800991520] [2021-12-21 15:18:14,146 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1800991520] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:18:14,147 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 15:18:14,147 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-21 15:18:14,147 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652481573] [2021-12-21 15:18:14,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:18:14,147 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-21 15:18:14,148 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:18:14,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-21 15:18:14,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2021-12-21 15:18:14,152 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 139 [2021-12-21 15:18:14,154 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 140 transitions, 461 flow. Second operand has 11 states, 11 states have (on average 82.0909090909091) internal successors, (903), 11 states have internal predecessors, (903), 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) [2021-12-21 15:18:14,154 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-21 15:18:14,154 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 139 [2021-12-21 15:18:14,154 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-21 15:18:14,310 INFO L129 PetriNetUnfolder]: 57/381 cut-off events. [2021-12-21 15:18:14,311 INFO L130 PetriNetUnfolder]: For 218/223 co-relation queries the response was YES. [2021-12-21 15:18:14,312 INFO L84 FinitePrefix]: Finished finitePrefix Result has 782 conditions, 381 events. 57/381 cut-off events. For 218/223 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1665 event pairs, 16 based on Foata normal form. 0/364 useless extension candidates. Maximal degree in co-relation 649. Up to 151 conditions per place. [2021-12-21 15:18:14,313 INFO L132 encePairwiseOnDemand]: 126/139 looper letters, 58 selfloop transitions, 19 changer transitions 2/149 dead transitions. [2021-12-21 15:18:14,313 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 149 transitions, 649 flow [2021-12-21 15:18:14,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-21 15:18:14,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-12-21 15:18:14,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 923 transitions. [2021-12-21 15:18:14,315 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6036625245258339 [2021-12-21 15:18:14,316 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 923 transitions. [2021-12-21 15:18:14,316 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 923 transitions. [2021-12-21 15:18:14,316 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-21 15:18:14,316 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 923 transitions. [2021-12-21 15:18:14,318 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 83.9090909090909) internal successors, (923), 11 states have internal predecessors, (923), 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) [2021-12-21 15:18:14,320 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 139.0) internal successors, (1668), 12 states have internal predecessors, (1668), 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) [2021-12-21 15:18:14,320 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 139.0) internal successors, (1668), 12 states have internal predecessors, (1668), 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) [2021-12-21 15:18:14,320 INFO L186 Difference]: Start difference. First operand has 140 places, 140 transitions, 461 flow. Second operand 11 states and 923 transitions. [2021-12-21 15:18:14,321 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 149 transitions, 649 flow [2021-12-21 15:18:14,325 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 149 transitions, 636 flow, removed 3 selfloop flow, removed 3 redundant places. [2021-12-21 15:18:14,329 INFO L242 Difference]: Finished difference. Result has 149 places, 142 transitions, 509 flow [2021-12-21 15:18:14,329 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=448, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=509, PETRI_PLACES=149, PETRI_TRANSITIONS=142} [2021-12-21 15:18:14,330 INFO L334 CegarLoopForPetriNet]: 126 programPoint places, 23 predicate places. [2021-12-21 15:18:14,330 INFO L470 AbstractCegarLoop]: Abstraction has has 149 places, 142 transitions, 509 flow [2021-12-21 15:18:14,331 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 82.0909090909091) internal successors, (903), 11 states have internal predecessors, (903), 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) [2021-12-21 15:18:14,331 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-21 15:18:14,331 INFO L254 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, 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, 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] [2021-12-21 15:18:14,332 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-21 15:18:14,332 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-21 15:18:14,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:18:14,332 INFO L85 PathProgramCache]: Analyzing trace with hash 1956691305, now seen corresponding path program 2 times [2021-12-21 15:18:14,333 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:18:14,333 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [224024821] [2021-12-21 15:18:14,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:18:14,334 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:18:14,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:18:14,555 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 15:18:14,556 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:18:14,556 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [224024821] [2021-12-21 15:18:14,556 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [224024821] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:18:14,556 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 15:18:14,556 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-21 15:18:14,557 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244593888] [2021-12-21 15:18:14,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:18:14,557 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-21 15:18:14,557 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:18:14,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-21 15:18:14,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2021-12-21 15:18:14,560 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 139 [2021-12-21 15:18:14,561 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 142 transitions, 509 flow. Second operand has 12 states, 12 states have (on average 81.75) internal successors, (981), 12 states have internal predecessors, (981), 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) [2021-12-21 15:18:14,561 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-21 15:18:14,561 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 139 [2021-12-21 15:18:14,561 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-21 15:18:14,734 INFO L129 PetriNetUnfolder]: 60/404 cut-off events. [2021-12-21 15:18:14,735 INFO L130 PetriNetUnfolder]: For 277/282 co-relation queries the response was YES. [2021-12-21 15:18:14,736 INFO L84 FinitePrefix]: Finished finitePrefix Result has 886 conditions, 404 events. 60/404 cut-off events. For 277/282 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1872 event pairs, 17 based on Foata normal form. 3/401 useless extension candidates. Maximal degree in co-relation 698. Up to 148 conditions per place. [2021-12-21 15:18:14,738 INFO L132 encePairwiseOnDemand]: 126/139 looper letters, 56 selfloop transitions, 17 changer transitions 10/153 dead transitions. [2021-12-21 15:18:14,738 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 153 transitions, 717 flow [2021-12-21 15:18:14,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-21 15:18:14,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2021-12-21 15:18:14,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1005 transitions. [2021-12-21 15:18:14,741 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6025179856115108 [2021-12-21 15:18:14,742 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1005 transitions. [2021-12-21 15:18:14,742 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1005 transitions. [2021-12-21 15:18:14,742 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-21 15:18:14,742 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1005 transitions. [2021-12-21 15:18:14,745 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 83.75) internal successors, (1005), 12 states have internal predecessors, (1005), 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) [2021-12-21 15:18:14,747 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 139.0) internal successors, (1807), 13 states have internal predecessors, (1807), 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) [2021-12-21 15:18:14,748 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 139.0) internal successors, (1807), 13 states have internal predecessors, (1807), 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) [2021-12-21 15:18:14,748 INFO L186 Difference]: Start difference. First operand has 149 places, 142 transitions, 509 flow. Second operand 12 states and 1005 transitions. [2021-12-21 15:18:14,748 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 153 transitions, 717 flow [2021-12-21 15:18:14,751 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 153 transitions, 688 flow, removed 3 selfloop flow, removed 7 redundant places. [2021-12-21 15:18:14,754 INFO L242 Difference]: Finished difference. Result has 154 places, 140 transitions, 504 flow [2021-12-21 15:18:14,754 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=480, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=504, PETRI_PLACES=154, PETRI_TRANSITIONS=140} [2021-12-21 15:18:14,755 INFO L334 CegarLoopForPetriNet]: 126 programPoint places, 28 predicate places. [2021-12-21 15:18:14,755 INFO L470 AbstractCegarLoop]: Abstraction has has 154 places, 140 transitions, 504 flow [2021-12-21 15:18:14,756 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 81.75) internal successors, (981), 12 states have internal predecessors, (981), 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) [2021-12-21 15:18:14,756 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-21 15:18:14,756 INFO L254 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, 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, 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] [2021-12-21 15:18:14,757 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-21 15:18:14,757 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-21 15:18:14,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:18:14,758 INFO L85 PathProgramCache]: Analyzing trace with hash -1239625413, now seen corresponding path program 3 times [2021-12-21 15:18:14,758 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:18:14,758 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1355376038] [2021-12-21 15:18:14,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:18:14,758 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:18:14,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:18:14,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 15:18:14,861 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:18:14,861 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1355376038] [2021-12-21 15:18:14,861 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1355376038] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:18:14,861 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 15:18:14,862 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-21 15:18:14,862 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132433289] [2021-12-21 15:18:14,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:18:14,862 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-21 15:18:14,862 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:18:14,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-21 15:18:14,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-12-21 15:18:14,864 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 139 [2021-12-21 15:18:14,865 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 140 transitions, 504 flow. Second operand has 8 states, 8 states have (on average 87.25) internal successors, (698), 8 states have internal predecessors, (698), 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) [2021-12-21 15:18:14,865 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-21 15:18:14,865 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 139 [2021-12-21 15:18:14,866 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-21 15:18:15,010 INFO L129 PetriNetUnfolder]: 31/320 cut-off events. [2021-12-21 15:18:15,010 INFO L130 PetriNetUnfolder]: For 158/163 co-relation queries the response was YES. [2021-12-21 15:18:15,011 INFO L84 FinitePrefix]: Finished finitePrefix Result has 645 conditions, 320 events. 31/320 cut-off events. For 158/163 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1387 event pairs, 8 based on Foata normal form. 4/316 useless extension candidates. Maximal degree in co-relation 474. Up to 66 conditions per place. [2021-12-21 15:18:15,012 INFO L132 encePairwiseOnDemand]: 129/139 looper letters, 0 selfloop transitions, 0 changer transitions 140/140 dead transitions. [2021-12-21 15:18:15,012 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 140 transitions, 637 flow [2021-12-21 15:18:15,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-21 15:18:15,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-12-21 15:18:15,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 785 transitions. [2021-12-21 15:18:15,014 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.627498001598721 [2021-12-21 15:18:15,014 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 785 transitions. [2021-12-21 15:18:15,014 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 785 transitions. [2021-12-21 15:18:15,014 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-21 15:18:15,014 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 785 transitions. [2021-12-21 15:18:15,021 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 87.22222222222223) internal successors, (785), 9 states have internal predecessors, (785), 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) [2021-12-21 15:18:15,023 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 139.0) internal successors, (1390), 10 states have internal predecessors, (1390), 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) [2021-12-21 15:18:15,023 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 139.0) internal successors, (1390), 10 states have internal predecessors, (1390), 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) [2021-12-21 15:18:15,023 INFO L186 Difference]: Start difference. First operand has 154 places, 140 transitions, 504 flow. Second operand 9 states and 785 transitions. [2021-12-21 15:18:15,024 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 140 transitions, 637 flow [2021-12-21 15:18:15,025 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 140 transitions, 599 flow, removed 2 selfloop flow, removed 11 redundant places. [2021-12-21 15:18:15,027 INFO L242 Difference]: Finished difference. Result has 145 places, 0 transitions, 0 flow [2021-12-21 15:18:15,027 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=460, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=0, PETRI_PLACES=145, PETRI_TRANSITIONS=0} [2021-12-21 15:18:15,027 INFO L334 CegarLoopForPetriNet]: 126 programPoint places, 19 predicate places. [2021-12-21 15:18:15,027 INFO L470 AbstractCegarLoop]: Abstraction has has 145 places, 0 transitions, 0 flow [2021-12-21 15:18:15,028 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 87.25) internal successors, (698), 8 states have internal predecessors, (698), 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) [2021-12-21 15:18:15,030 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2021-12-21 15:18:15,030 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION (1 of 3 remaining) [2021-12-21 15:18:15,030 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION (0 of 3 remaining) [2021-12-21 15:18:15,030 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-21 15:18:15,033 INFO L732 BasicCegarLoop]: Path program histogram: [3, 2, 1] [2021-12-21 15:18:15,035 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-12-21 15:18:15,035 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-21 15:18:15,037 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.12 03:18:15 BasicIcfg [2021-12-21 15:18:15,037 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-21 15:18:15,038 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-21 15:18:15,038 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-21 15:18:15,038 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-21 15:18:15,039 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 03:18:12" (3/4) ... [2021-12-21 15:18:15,040 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-12-21 15:18:15,044 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2021-12-21 15:18:15,045 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2021-12-21 15:18:15,048 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 22 nodes and edges [2021-12-21 15:18:15,048 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-12-21 15:18:15,048 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-12-21 15:18:15,048 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-12-21 15:18:15,071 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-12-21 15:18:15,071 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-21 15:18:15,072 INFO L158 Benchmark]: Toolchain (without parser) took 3552.18ms. Allocated memory was 96.5MB in the beginning and 142.6MB in the end (delta: 46.1MB). Free memory was 67.8MB in the beginning and 108.5MB in the end (delta: -40.6MB). Peak memory consumption was 5.8MB. Max. memory is 16.1GB. [2021-12-21 15:18:15,072 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 96.5MB. Free memory was 55.8MB in the beginning and 55.7MB in the end (delta: 76.9kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-21 15:18:15,072 INFO L158 Benchmark]: CACSL2BoogieTranslator took 186.63ms. Allocated memory was 96.5MB in the beginning and 117.4MB in the end (delta: 21.0MB). Free memory was 67.8MB in the beginning and 92.9MB in the end (delta: -25.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-21 15:18:15,072 INFO L158 Benchmark]: Boogie Procedure Inliner took 44.86ms. Allocated memory is still 117.4MB. Free memory was 92.9MB in the beginning and 91.2MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-21 15:18:15,073 INFO L158 Benchmark]: Boogie Preprocessor took 39.69ms. Allocated memory is still 117.4MB. Free memory was 91.2MB in the beginning and 89.9MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-21 15:18:15,073 INFO L158 Benchmark]: RCFGBuilder took 366.38ms. Allocated memory is still 117.4MB. Free memory was 89.9MB in the beginning and 74.0MB in the end (delta: 15.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2021-12-21 15:18:15,073 INFO L158 Benchmark]: TraceAbstraction took 2876.05ms. Allocated memory was 117.4MB in the beginning and 142.6MB in the end (delta: 25.2MB). Free memory was 73.6MB in the beginning and 112.7MB in the end (delta: -39.1MB). Peak memory consumption was 67.7MB. Max. memory is 16.1GB. [2021-12-21 15:18:15,073 INFO L158 Benchmark]: Witness Printer took 33.30ms. Allocated memory is still 142.6MB. Free memory was 112.7MB in the beginning and 108.5MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-12-21 15:18:15,074 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 96.5MB. Free memory was 55.8MB in the beginning and 55.7MB in the end (delta: 76.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 186.63ms. Allocated memory was 96.5MB in the beginning and 117.4MB in the end (delta: 21.0MB). Free memory was 67.8MB in the beginning and 92.9MB in the end (delta: -25.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 44.86ms. Allocated memory is still 117.4MB. Free memory was 92.9MB in the beginning and 91.2MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 39.69ms. Allocated memory is still 117.4MB. Free memory was 91.2MB in the beginning and 89.9MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 366.38ms. Allocated memory is still 117.4MB. Free memory was 89.9MB in the beginning and 74.0MB in the end (delta: 15.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 2876.05ms. Allocated memory was 117.4MB in the beginning and 142.6MB in the end (delta: 25.2MB). Free memory was 73.6MB in the beginning and 112.7MB in the end (delta: -39.1MB). Peak memory consumption was 67.7MB. Max. memory is 16.1GB. * Witness Printer took 33.30ms. Allocated memory is still 142.6MB. Free memory was 112.7MB in the beginning and 108.5MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 115]: 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 5 procedures, 152 locations, 3 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: 2.8s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 1.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 447 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 447 mSDsluCounter, 651 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 619 mSDsCounter, 58 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 817 IncrementalHoareTripleChecker+Invalid, 875 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 58 mSolverCounterUnsat, 198 mSDtfsCounter, 817 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 76 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=509occurred in iteration=4, InterpolantAutomatonStates: 61, 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, 0.3s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 665 NumberOfCodeBlocks, 665 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 659 ConstructedInterpolants, 0 QuantifiedInterpolants, 2308 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 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! [2021-12-21 15:18:15,103 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