./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/chl-chromosome-trans.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f4b24e32 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/chl-chromosome-trans.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 795c382fbb0026f2f6f7212254176553809c7311a8058a10cea47f6b1b03373b --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-13 22:03:46,682 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 22:03:46,686 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 22:03:46,739 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 22:03:46,739 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 22:03:46,740 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 22:03:46,743 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 22:03:46,748 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 22:03:46,750 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 22:03:46,755 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 22:03:46,756 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 22:03:46,757 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 22:03:46,758 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 22:03:46,760 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 22:03:46,761 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 22:03:46,765 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 22:03:46,766 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 22:03:46,767 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 22:03:46,769 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 22:03:46,772 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 22:03:46,774 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 22:03:46,776 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 22:03:46,776 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 22:03:46,777 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 22:03:46,779 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 22:03:46,783 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 22:03:46,784 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 22:03:46,784 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 22:03:46,785 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 22:03:46,786 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 22:03:46,787 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 22:03:46,787 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 22:03:46,789 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 22:03:46,789 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 22:03:46,790 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 22:03:46,790 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 22:03:46,791 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 22:03:46,791 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 22:03:46,791 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 22:03:46,792 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 22:03:46,792 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 22:03:46,794 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 22:03:46,795 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-13 22:03:46,831 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 22:03:46,832 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 22:03:46,832 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 22:03:46,833 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 22:03:46,833 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-13 22:03:46,833 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-13 22:03:46,834 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 22:03:46,834 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 22:03:46,834 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 22:03:46,835 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 22:03:46,835 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-13 22:03:46,836 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-13 22:03:46,836 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-13 22:03:46,836 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 22:03:46,836 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-13 22:03:46,836 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-13 22:03:46,837 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-13 22:03:46,837 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-13 22:03:46,837 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 22:03:46,838 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 22:03:46,839 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-13 22:03:46,839 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 22:03:46,839 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 22:03:46,839 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-13 22:03:46,839 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 22:03:46,840 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 22:03:46,840 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-13 22:03:46,840 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-13 22:03:46,840 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-13 22:03:46,841 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-13 22:03:46,841 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-13 22:03:46,841 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-13 22:03:46,841 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-13 22:03:46,841 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 795c382fbb0026f2f6f7212254176553809c7311a8058a10cea47f6b1b03373b [2022-07-13 22:03:47,047 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 22:03:47,069 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 22:03:47,072 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 22:03:47,073 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 22:03:47,073 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 22:03:47,074 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/chl-chromosome-trans.wvr.c [2022-07-13 22:03:47,128 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/083de8779/0c78a393aed84fbeaf0bbe5f9354deaa/FLAG73ad5fcf4 [2022-07-13 22:03:47,558 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 22:03:47,558 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-chromosome-trans.wvr.c [2022-07-13 22:03:47,578 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/083de8779/0c78a393aed84fbeaf0bbe5f9354deaa/FLAG73ad5fcf4 [2022-07-13 22:03:47,939 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/083de8779/0c78a393aed84fbeaf0bbe5f9354deaa [2022-07-13 22:03:47,941 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 22:03:47,943 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 22:03:47,946 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 22:03:47,946 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 22:03:47,949 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 22:03:47,950 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 10:03:47" (1/1) ... [2022-07-13 22:03:47,951 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@59d04c5b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:03:47, skipping insertion in model container [2022-07-13 22:03:47,951 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 10:03:47" (1/1) ... [2022-07-13 22:03:47,957 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 22:03:47,977 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 22:03:48,171 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/chl-chromosome-trans.wvr.c[3034,3047] [2022-07-13 22:03:48,183 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 22:03:48,189 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 22:03:48,216 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/chl-chromosome-trans.wvr.c[3034,3047] [2022-07-13 22:03:48,220 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 22:03:48,232 INFO L208 MainTranslator]: Completed translation [2022-07-13 22:03:48,232 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:03:48 WrapperNode [2022-07-13 22:03:48,232 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 22:03:48,233 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 22:03:48,233 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 22:03:48,233 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 22:03:48,239 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:03:48" (1/1) ... [2022-07-13 22:03:48,247 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:03:48" (1/1) ... [2022-07-13 22:03:48,271 INFO L137 Inliner]: procedures = 26, calls = 46, calls flagged for inlining = 16, calls inlined = 24, statements flattened = 283 [2022-07-13 22:03:48,272 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 22:03:48,273 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 22:03:48,273 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 22:03:48,273 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 22:03:48,279 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:03:48" (1/1) ... [2022-07-13 22:03:48,280 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:03:48" (1/1) ... [2022-07-13 22:03:48,283 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:03:48" (1/1) ... [2022-07-13 22:03:48,283 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:03:48" (1/1) ... [2022-07-13 22:03:48,291 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:03:48" (1/1) ... [2022-07-13 22:03:48,296 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:03:48" (1/1) ... [2022-07-13 22:03:48,298 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:03:48" (1/1) ... [2022-07-13 22:03:48,301 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 22:03:48,302 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 22:03:48,302 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 22:03:48,302 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 22:03:48,303 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:03:48" (1/1) ... [2022-07-13 22:03:48,309 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 22:03:48,319 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:03:48,332 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-13 22:03:48,342 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-13 22:03:48,375 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-13 22:03:48,375 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-13 22:03:48,375 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-13 22:03:48,376 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-13 22:03:48,376 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-07-13 22:03:48,376 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-07-13 22:03:48,376 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-07-13 22:03:48,378 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-07-13 22:03:48,378 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-07-13 22:03:48,378 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-07-13 22:03:48,378 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-13 22:03:48,379 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-13 22:03:48,379 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 22:03:48,379 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 22:03:48,379 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-13 22:03:48,381 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-07-13 22:03:48,492 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 22:03:48,493 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 22:03:48,994 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 22:03:49,005 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 22:03:49,005 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2022-07-13 22:03:49,008 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 10:03:49 BoogieIcfgContainer [2022-07-13 22:03:49,008 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 22:03:49,009 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-13 22:03:49,010 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-13 22:03:49,012 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-13 22:03:49,012 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 10:03:47" (1/3) ... [2022-07-13 22:03:49,013 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d20bcd0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 10:03:49, skipping insertion in model container [2022-07-13 22:03:49,013 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:03:48" (2/3) ... [2022-07-13 22:03:49,013 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d20bcd0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 10:03:49, skipping insertion in model container [2022-07-13 22:03:49,013 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 10:03:49" (3/3) ... [2022-07-13 22:03:49,014 INFO L111 eAbstractionObserver]: Analyzing ICFG chl-chromosome-trans.wvr.c [2022-07-13 22:03:49,018 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-13 22:03:49,023 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-13 22:03:49,024 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-13 22:03:49,024 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-13 22:03:49,118 INFO L135 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-07-13 22:03:49,161 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 350 places, 371 transitions, 766 flow [2022-07-13 22:03:49,318 INFO L129 PetriNetUnfolder]: 31/368 cut-off events. [2022-07-13 22:03:49,319 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-07-13 22:03:49,328 INFO L84 FinitePrefix]: Finished finitePrefix Result has 381 conditions, 368 events. 31/368 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 624 event pairs, 0 based on Foata normal form. 0/336 useless extension candidates. Maximal degree in co-relation 282. Up to 2 conditions per place. [2022-07-13 22:03:49,328 INFO L82 GeneralOperation]: Start removeDead. Operand has 350 places, 371 transitions, 766 flow [2022-07-13 22:03:49,339 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 336 places, 357 transitions, 732 flow [2022-07-13 22:03:49,351 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 22:03:49,357 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@7a67a930, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@24929a45 [2022-07-13 22:03:49,359 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-07-13 22:03:49,434 INFO L129 PetriNetUnfolder]: 31/356 cut-off events. [2022-07-13 22:03:49,434 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-07-13 22:03:49,435 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:03:49,436 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:03:49,437 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-13 22:03:49,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:03:49,442 INFO L85 PathProgramCache]: Analyzing trace with hash -1263257970, now seen corresponding path program 1 times [2022-07-13 22:03:49,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:03:49,451 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [621011507] [2022-07-13 22:03:49,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:03:49,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:03:49,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:03:49,699 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:03:49,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:03:49,700 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [621011507] [2022-07-13 22:03:49,701 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [621011507] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:03:49,701 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:03:49,701 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-13 22:03:49,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837262211] [2022-07-13 22:03:49,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:03:49,711 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-13 22:03:49,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:03:49,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-13 22:03:49,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-13 22:03:49,746 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 342 out of 371 [2022-07-13 22:03:49,752 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 336 places, 357 transitions, 732 flow. Second operand has 2 states, 2 states have (on average 346.5) internal successors, (693), 2 states have internal predecessors, (693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:49,753 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:03:49,753 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 342 of 371 [2022-07-13 22:03:49,754 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:03:49,836 INFO L129 PetriNetUnfolder]: 9/335 cut-off events. [2022-07-13 22:03:49,836 INFO L130 PetriNetUnfolder]: For 12/14 co-relation queries the response was YES. [2022-07-13 22:03:49,839 INFO L84 FinitePrefix]: Finished finitePrefix Result has 355 conditions, 335 events. 9/335 cut-off events. For 12/14 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 612 event pairs, 0 based on Foata normal form. 35/345 useless extension candidates. Maximal degree in co-relation 267. Up to 7 conditions per place. [2022-07-13 22:03:49,841 INFO L132 encePairwiseOnDemand]: 349/371 looper letters, 6 selfloop transitions, 0 changer transitions 7/335 dead transitions. [2022-07-13 22:03:49,841 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 337 places, 335 transitions, 700 flow [2022-07-13 22:03:49,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-13 22:03:49,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-07-13 22:03:49,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 712 transitions. [2022-07-13 22:03:49,860 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9595687331536388 [2022-07-13 22:03:49,860 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 712 transitions. [2022-07-13 22:03:49,861 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 712 transitions. [2022-07-13 22:03:49,865 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:03:49,867 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 712 transitions. [2022-07-13 22:03:49,872 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 356.0) internal successors, (712), 2 states have internal predecessors, (712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:49,880 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 371.0) internal successors, (1113), 3 states have internal predecessors, (1113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:49,881 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 371.0) internal successors, (1113), 3 states have internal predecessors, (1113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:49,882 INFO L186 Difference]: Start difference. First operand has 336 places, 357 transitions, 732 flow. Second operand 2 states and 712 transitions. [2022-07-13 22:03:49,884 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 337 places, 335 transitions, 700 flow [2022-07-13 22:03:49,890 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 331 places, 335 transitions, 688 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-07-13 22:03:49,898 INFO L242 Difference]: Finished difference. Result has 331 places, 328 transitions, 662 flow [2022-07-13 22:03:49,900 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=371, PETRI_DIFFERENCE_MINUEND_FLOW=676, PETRI_DIFFERENCE_MINUEND_PLACES=330, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=335, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=335, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=662, PETRI_PLACES=331, PETRI_TRANSITIONS=328} [2022-07-13 22:03:49,903 INFO L279 CegarLoopForPetriNet]: 336 programPoint places, -5 predicate places. [2022-07-13 22:03:49,904 INFO L495 AbstractCegarLoop]: Abstraction has has 331 places, 328 transitions, 662 flow [2022-07-13 22:03:49,904 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 346.5) internal successors, (693), 2 states have internal predecessors, (693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:49,905 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:03:49,905 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:03:49,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-13 22:03:49,906 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-13 22:03:49,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:03:49,907 INFO L85 PathProgramCache]: Analyzing trace with hash -1315339283, now seen corresponding path program 1 times [2022-07-13 22:03:49,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:03:49,907 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523286004] [2022-07-13 22:03:49,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:03:49,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:03:49,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:03:50,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:03:50,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:03:50,112 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [523286004] [2022-07-13 22:03:50,112 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [523286004] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:03:50,113 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:03:50,113 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 22:03:50,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862821448] [2022-07-13 22:03:50,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:03:50,115 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 22:03:50,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:03:50,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 22:03:50,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 22:03:50,120 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 331 out of 371 [2022-07-13 22:03:50,122 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 331 places, 328 transitions, 662 flow. Second operand has 4 states, 4 states have (on average 333.5) internal successors, (1334), 4 states have internal predecessors, (1334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:50,122 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:03:50,125 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 331 of 371 [2022-07-13 22:03:50,125 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:03:50,370 INFO L129 PetriNetUnfolder]: 54/849 cut-off events. [2022-07-13 22:03:50,370 INFO L130 PetriNetUnfolder]: For 25/29 co-relation queries the response was YES. [2022-07-13 22:03:50,378 INFO L84 FinitePrefix]: Finished finitePrefix Result has 976 conditions, 849 events. 54/849 cut-off events. For 25/29 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 4151 event pairs, 18 based on Foata normal form. 1/791 useless extension candidates. Maximal degree in co-relation 973. Up to 55 conditions per place. [2022-07-13 22:03:50,382 INFO L132 encePairwiseOnDemand]: 366/371 looper letters, 31 selfloop transitions, 4 changer transitions 0/346 dead transitions. [2022-07-13 22:03:50,382 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 328 places, 346 transitions, 778 flow [2022-07-13 22:03:50,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 22:03:50,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-07-13 22:03:50,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1691 transitions. [2022-07-13 22:03:50,388 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9115902964959569 [2022-07-13 22:03:50,388 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1691 transitions. [2022-07-13 22:03:50,388 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1691 transitions. [2022-07-13 22:03:50,389 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:03:50,389 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1691 transitions. [2022-07-13 22:03:50,392 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 338.2) internal successors, (1691), 5 states have internal predecessors, (1691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:50,396 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 371.0) internal successors, (2226), 6 states have internal predecessors, (2226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:50,398 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 371.0) internal successors, (2226), 6 states have internal predecessors, (2226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:50,398 INFO L186 Difference]: Start difference. First operand has 331 places, 328 transitions, 662 flow. Second operand 5 states and 1691 transitions. [2022-07-13 22:03:50,398 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 328 places, 346 transitions, 778 flow [2022-07-13 22:03:50,401 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 328 places, 346 transitions, 778 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-07-13 22:03:50,407 INFO L242 Difference]: Finished difference. Result has 331 places, 331 transitions, 691 flow [2022-07-13 22:03:50,408 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=371, PETRI_DIFFERENCE_MINUEND_FLOW=662, PETRI_DIFFERENCE_MINUEND_PLACES=324, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=328, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=324, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=691, PETRI_PLACES=331, PETRI_TRANSITIONS=331} [2022-07-13 22:03:50,409 INFO L279 CegarLoopForPetriNet]: 336 programPoint places, -5 predicate places. [2022-07-13 22:03:50,409 INFO L495 AbstractCegarLoop]: Abstraction has has 331 places, 331 transitions, 691 flow [2022-07-13 22:03:50,410 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 333.5) internal successors, (1334), 4 states have internal predecessors, (1334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:50,410 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:03:50,411 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:03:50,411 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-13 22:03:50,411 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-13 22:03:50,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:03:50,414 INFO L85 PathProgramCache]: Analyzing trace with hash -1925711219, now seen corresponding path program 1 times [2022-07-13 22:03:50,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:03:50,414 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674312474] [2022-07-13 22:03:50,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:03:50,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:03:50,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:03:50,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:03:50,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:03:50,593 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [674312474] [2022-07-13 22:03:50,594 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [674312474] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:03:50,594 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:03:50,594 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 22:03:50,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335810573] [2022-07-13 22:03:50,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:03:50,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 22:03:50,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:03:50,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 22:03:50,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-13 22:03:50,600 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 306 out of 371 [2022-07-13 22:03:50,601 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 331 places, 331 transitions, 691 flow. Second operand has 5 states, 5 states have (on average 312.0) internal successors, (1560), 5 states have internal predecessors, (1560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:50,602 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:03:50,602 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 306 of 371 [2022-07-13 22:03:50,602 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:03:50,792 INFO L129 PetriNetUnfolder]: 8/415 cut-off events. [2022-07-13 22:03:50,793 INFO L130 PetriNetUnfolder]: For 9/15 co-relation queries the response was YES. [2022-07-13 22:03:50,795 INFO L84 FinitePrefix]: Finished finitePrefix Result has 494 conditions, 415 events. 8/415 cut-off events. For 9/15 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 832 event pairs, 0 based on Foata normal form. 0/397 useless extension candidates. Maximal degree in co-relation 488. Up to 42 conditions per place. [2022-07-13 22:03:50,797 INFO L132 encePairwiseOnDemand]: 356/371 looper letters, 42 selfloop transitions, 12 changer transitions 0/343 dead transitions. [2022-07-13 22:03:50,797 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 335 places, 343 transitions, 823 flow [2022-07-13 22:03:50,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 22:03:50,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-07-13 22:03:50,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1587 transitions. [2022-07-13 22:03:50,801 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8555256064690027 [2022-07-13 22:03:50,801 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1587 transitions. [2022-07-13 22:03:50,802 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1587 transitions. [2022-07-13 22:03:50,803 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:03:50,803 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1587 transitions. [2022-07-13 22:03:50,807 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 317.4) internal successors, (1587), 5 states have internal predecessors, (1587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:50,810 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 371.0) internal successors, (2226), 6 states have internal predecessors, (2226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:50,811 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 371.0) internal successors, (2226), 6 states have internal predecessors, (2226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:50,812 INFO L186 Difference]: Start difference. First operand has 331 places, 331 transitions, 691 flow. Second operand 5 states and 1587 transitions. [2022-07-13 22:03:50,812 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 335 places, 343 transitions, 823 flow [2022-07-13 22:03:50,829 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 335 places, 343 transitions, 823 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-07-13 22:03:50,833 INFO L242 Difference]: Finished difference. Result has 336 places, 334 transitions, 739 flow [2022-07-13 22:03:50,834 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=371, PETRI_DIFFERENCE_MINUEND_FLOW=691, PETRI_DIFFERENCE_MINUEND_PLACES=331, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=331, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=319, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=739, PETRI_PLACES=336, PETRI_TRANSITIONS=334} [2022-07-13 22:03:50,836 INFO L279 CegarLoopForPetriNet]: 336 programPoint places, 0 predicate places. [2022-07-13 22:03:50,836 INFO L495 AbstractCegarLoop]: Abstraction has has 336 places, 334 transitions, 739 flow [2022-07-13 22:03:50,838 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 312.0) internal successors, (1560), 5 states have internal predecessors, (1560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:50,838 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:03:50,838 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:03:50,838 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-13 22:03:50,838 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-13 22:03:50,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:03:50,840 INFO L85 PathProgramCache]: Analyzing trace with hash -306219218, now seen corresponding path program 1 times [2022-07-13 22:03:50,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:03:50,840 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [353689004] [2022-07-13 22:03:50,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:03:50,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:03:50,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:03:50,991 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-13 22:03:50,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:03:50,992 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [353689004] [2022-07-13 22:03:50,992 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [353689004] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 22:03:50,992 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1428338290] [2022-07-13 22:03:50,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:03:50,993 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:03:50,993 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:03:50,995 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 22:03:51,028 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-13 22:03:51,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:03:51,176 INFO L263 TraceCheckSpWp]: Trace formula consists of 467 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-13 22:03:51,187 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:03:51,325 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-13 22:03:51,329 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 22:03:51,420 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-13 22:03:51,420 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1428338290] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 22:03:51,420 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 22:03:51,421 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2022-07-13 22:03:51,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207192429] [2022-07-13 22:03:51,421 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 22:03:51,422 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-07-13 22:03:51,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:03:51,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-07-13 22:03:51,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2022-07-13 22:03:51,427 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 303 out of 371 [2022-07-13 22:03:51,432 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 336 places, 334 transitions, 739 flow. Second operand has 15 states, 15 states have (on average 307.3333333333333) internal successors, (4610), 15 states have internal predecessors, (4610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:51,432 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:03:51,432 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 303 of 371 [2022-07-13 22:03:51,432 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:03:51,770 INFO L129 PetriNetUnfolder]: 8/442 cut-off events. [2022-07-13 22:03:51,770 INFO L130 PetriNetUnfolder]: For 21/27 co-relation queries the response was YES. [2022-07-13 22:03:51,774 INFO L84 FinitePrefix]: Finished finitePrefix Result has 571 conditions, 442 events. 8/442 cut-off events. For 21/27 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 805 event pairs, 0 based on Foata normal form. 6/433 useless extension candidates. Maximal degree in co-relation 563. Up to 33 conditions per place. [2022-07-13 22:03:51,776 INFO L132 encePairwiseOnDemand]: 347/371 looper letters, 45 selfloop transitions, 33 changer transitions 0/364 dead transitions. [2022-07-13 22:03:51,776 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 346 places, 364 transitions, 961 flow [2022-07-13 22:03:51,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-13 22:03:51,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-07-13 22:03:51,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 3417 transitions. [2022-07-13 22:03:51,783 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8372947806910072 [2022-07-13 22:03:51,785 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 3417 transitions. [2022-07-13 22:03:51,785 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 3417 transitions. [2022-07-13 22:03:51,787 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:03:51,787 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 3417 transitions. [2022-07-13 22:03:51,793 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 310.6363636363636) internal successors, (3417), 11 states have internal predecessors, (3417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:51,801 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 371.0) internal successors, (4452), 12 states have internal predecessors, (4452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:51,803 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 371.0) internal successors, (4452), 12 states have internal predecessors, (4452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:51,803 INFO L186 Difference]: Start difference. First operand has 336 places, 334 transitions, 739 flow. Second operand 11 states and 3417 transitions. [2022-07-13 22:03:51,803 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 346 places, 364 transitions, 961 flow [2022-07-13 22:03:51,807 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 343 places, 364 transitions, 943 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-07-13 22:03:51,811 INFO L242 Difference]: Finished difference. Result has 346 places, 352 transitions, 888 flow [2022-07-13 22:03:51,812 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=371, PETRI_DIFFERENCE_MINUEND_FLOW=721, PETRI_DIFFERENCE_MINUEND_PLACES=333, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=334, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=310, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=888, PETRI_PLACES=346, PETRI_TRANSITIONS=352} [2022-07-13 22:03:51,813 INFO L279 CegarLoopForPetriNet]: 336 programPoint places, 10 predicate places. [2022-07-13 22:03:51,813 INFO L495 AbstractCegarLoop]: Abstraction has has 346 places, 352 transitions, 888 flow [2022-07-13 22:03:51,815 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 307.3333333333333) internal successors, (4610), 15 states have internal predecessors, (4610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:51,815 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:03:51,815 INFO L200 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:03:51,846 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-13 22:03:52,043 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:03:52,044 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-13 22:03:52,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:03:52,044 INFO L85 PathProgramCache]: Analyzing trace with hash 592966378, now seen corresponding path program 2 times [2022-07-13 22:03:52,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:03:52,045 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1043857077] [2022-07-13 22:03:52,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:03:52,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:03:52,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:03:52,212 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-07-13 22:03:52,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:03:52,213 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1043857077] [2022-07-13 22:03:52,213 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1043857077] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 22:03:52,213 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [109121378] [2022-07-13 22:03:52,213 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-13 22:03:52,214 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:03:52,214 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:03:52,216 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 22:03:52,246 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-13 22:03:52,358 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-13 22:03:52,358 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 22:03:52,361 INFO L263 TraceCheckSpWp]: Trace formula consists of 428 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-13 22:03:52,375 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:03:52,495 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-07-13 22:03:52,496 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 22:03:52,496 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [109121378] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:03:52,496 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 22:03:52,496 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [11] total 15 [2022-07-13 22:03:52,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225085419] [2022-07-13 22:03:52,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:03:52,497 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 22:03:52,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:03:52,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 22:03:52,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2022-07-13 22:03:52,501 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 299 out of 371 [2022-07-13 22:03:52,502 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 346 places, 352 transitions, 888 flow. Second operand has 6 states, 6 states have (on average 305.5) internal successors, (1833), 6 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:52,502 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:03:52,503 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 299 of 371 [2022-07-13 22:03:52,503 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:03:52,711 INFO L129 PetriNetUnfolder]: 61/762 cut-off events. [2022-07-13 22:03:52,712 INFO L130 PetriNetUnfolder]: For 68/130 co-relation queries the response was YES. [2022-07-13 22:03:52,718 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1035 conditions, 762 events. 61/762 cut-off events. For 68/130 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 3452 event pairs, 20 based on Foata normal form. 3/712 useless extension candidates. Maximal degree in co-relation 1024. Up to 108 conditions per place. [2022-07-13 22:03:52,721 INFO L132 encePairwiseOnDemand]: 363/371 looper letters, 46 selfloop transitions, 5 changer transitions 5/366 dead transitions. [2022-07-13 22:03:52,722 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 351 places, 366 transitions, 1033 flow [2022-07-13 22:03:52,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-13 22:03:52,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-07-13 22:03:52,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1851 transitions. [2022-07-13 22:03:52,726 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8315363881401617 [2022-07-13 22:03:52,726 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1851 transitions. [2022-07-13 22:03:52,726 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1851 transitions. [2022-07-13 22:03:52,727 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:03:52,727 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1851 transitions. [2022-07-13 22:03:52,730 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 308.5) internal successors, (1851), 6 states have internal predecessors, (1851), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:52,733 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 371.0) internal successors, (2597), 7 states have internal predecessors, (2597), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:52,734 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 371.0) internal successors, (2597), 7 states have internal predecessors, (2597), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:52,734 INFO L186 Difference]: Start difference. First operand has 346 places, 352 transitions, 888 flow. Second operand 6 states and 1851 transitions. [2022-07-13 22:03:52,734 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 351 places, 366 transitions, 1033 flow [2022-07-13 22:03:52,739 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 348 places, 366 transitions, 1008 flow, removed 6 selfloop flow, removed 3 redundant places. [2022-07-13 22:03:52,743 INFO L242 Difference]: Finished difference. Result has 352 places, 356 transitions, 902 flow [2022-07-13 22:03:52,744 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=371, PETRI_DIFFERENCE_MINUEND_FLOW=863, PETRI_DIFFERENCE_MINUEND_PLACES=343, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=352, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=347, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=902, PETRI_PLACES=352, PETRI_TRANSITIONS=356} [2022-07-13 22:03:52,744 INFO L279 CegarLoopForPetriNet]: 336 programPoint places, 16 predicate places. [2022-07-13 22:03:52,744 INFO L495 AbstractCegarLoop]: Abstraction has has 352 places, 356 transitions, 902 flow [2022-07-13 22:03:52,745 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 305.5) internal successors, (1833), 6 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:52,745 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:03:52,746 INFO L200 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:03:52,771 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-13 22:03:52,967 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:03:52,967 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-13 22:03:52,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:03:52,968 INFO L85 PathProgramCache]: Analyzing trace with hash 1902012858, now seen corresponding path program 1 times [2022-07-13 22:03:52,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:03:52,968 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [38253132] [2022-07-13 22:03:52,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:03:52,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:03:53,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:03:53,084 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-07-13 22:03:53,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:03:53,084 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [38253132] [2022-07-13 22:03:53,085 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [38253132] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:03:53,085 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:03:53,085 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 22:03:53,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550170912] [2022-07-13 22:03:53,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:03:53,086 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 22:03:53,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:03:53,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 22:03:53,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 22:03:53,089 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 331 out of 371 [2022-07-13 22:03:53,090 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 352 places, 356 transitions, 902 flow. Second operand has 4 states, 4 states have (on average 333.5) internal successors, (1334), 4 states have internal predecessors, (1334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:53,091 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:03:53,091 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 331 of 371 [2022-07-13 22:03:53,091 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:03:53,305 INFO L129 PetriNetUnfolder]: 83/987 cut-off events. [2022-07-13 22:03:53,305 INFO L130 PetriNetUnfolder]: For 105/179 co-relation queries the response was YES. [2022-07-13 22:03:53,314 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1355 conditions, 987 events. 83/987 cut-off events. For 105/179 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 5515 event pairs, 36 based on Foata normal form. 0/907 useless extension candidates. Maximal degree in co-relation 1340. Up to 97 conditions per place. [2022-07-13 22:03:53,318 INFO L132 encePairwiseOnDemand]: 366/371 looper letters, 27 selfloop transitions, 4 changer transitions 2/371 dead transitions. [2022-07-13 22:03:53,319 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 354 places, 371 transitions, 1003 flow [2022-07-13 22:03:53,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 22:03:53,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-07-13 22:03:53,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1689 transitions. [2022-07-13 22:03:53,323 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9105121293800539 [2022-07-13 22:03:53,323 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1689 transitions. [2022-07-13 22:03:53,323 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1689 transitions. [2022-07-13 22:03:53,324 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:03:53,324 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1689 transitions. [2022-07-13 22:03:53,327 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 337.8) internal successors, (1689), 5 states have internal predecessors, (1689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:53,330 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 371.0) internal successors, (2226), 6 states have internal predecessors, (2226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:53,330 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 371.0) internal successors, (2226), 6 states have internal predecessors, (2226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:53,331 INFO L186 Difference]: Start difference. First operand has 352 places, 356 transitions, 902 flow. Second operand 5 states and 1689 transitions. [2022-07-13 22:03:53,331 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 354 places, 371 transitions, 1003 flow [2022-07-13 22:03:53,335 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 351 places, 371 transitions, 995 flow, removed 3 selfloop flow, removed 3 redundant places. [2022-07-13 22:03:53,339 INFO L242 Difference]: Finished difference. Result has 354 places, 358 transitions, 918 flow [2022-07-13 22:03:53,340 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=371, PETRI_DIFFERENCE_MINUEND_FLOW=889, PETRI_DIFFERENCE_MINUEND_PLACES=347, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=355, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=351, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=918, PETRI_PLACES=354, PETRI_TRANSITIONS=358} [2022-07-13 22:03:53,372 INFO L279 CegarLoopForPetriNet]: 336 programPoint places, 18 predicate places. [2022-07-13 22:03:53,373 INFO L495 AbstractCegarLoop]: Abstraction has has 354 places, 358 transitions, 918 flow [2022-07-13 22:03:53,373 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 333.5) internal successors, (1334), 4 states have internal predecessors, (1334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:53,373 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:03:53,374 INFO L200 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:03:53,374 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-13 22:03:53,374 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-13 22:03:53,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:03:53,374 INFO L85 PathProgramCache]: Analyzing trace with hash -1790994917, now seen corresponding path program 1 times [2022-07-13 22:03:53,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:03:53,375 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497693770] [2022-07-13 22:03:53,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:03:53,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:03:53,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:03:53,509 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2022-07-13 22:03:53,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:03:53,509 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [497693770] [2022-07-13 22:03:53,510 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [497693770] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 22:03:53,510 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [556437008] [2022-07-13 22:03:53,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:03:53,510 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:03:53,511 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:03:53,512 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 22:03:53,520 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-13 22:03:53,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:03:53,674 INFO L263 TraceCheckSpWp]: Trace formula consists of 598 conjuncts, 10 conjunts are in the unsatisfiable core [2022-07-13 22:03:53,678 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:03:53,834 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2022-07-13 22:03:53,834 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 22:03:53,934 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2022-07-13 22:03:53,935 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [556437008] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 22:03:53,935 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 22:03:53,935 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 22 [2022-07-13 22:03:53,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453590520] [2022-07-13 22:03:53,935 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 22:03:53,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-07-13 22:03:53,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:03:53,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-07-13 22:03:53,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=348, Unknown=0, NotChecked=0, Total=462 [2022-07-13 22:03:53,943 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 303 out of 371 [2022-07-13 22:03:53,949 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 354 places, 358 transitions, 918 flow. Second operand has 22 states, 22 states have (on average 306.8636363636364) internal successors, (6751), 22 states have internal predecessors, (6751), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:53,949 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:03:53,949 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 303 of 371 [2022-07-13 22:03:53,949 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:03:54,392 INFO L129 PetriNetUnfolder]: 7/565 cut-off events. [2022-07-13 22:03:54,392 INFO L130 PetriNetUnfolder]: For 72/82 co-relation queries the response was YES. [2022-07-13 22:03:54,397 INFO L84 FinitePrefix]: Finished finitePrefix Result has 848 conditions, 565 events. 7/565 cut-off events. For 72/82 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 1232 event pairs, 0 based on Foata normal form. 6/552 useless extension candidates. Maximal degree in co-relation 833. Up to 39 conditions per place. [2022-07-13 22:03:54,399 INFO L132 encePairwiseOnDemand]: 347/371 looper letters, 57 selfloop transitions, 51 changer transitions 0/400 dead transitions. [2022-07-13 22:03:54,400 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 370 places, 400 transitions, 1302 flow [2022-07-13 22:03:54,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-13 22:03:54,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-07-13 22:03:54,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 5265 transitions. [2022-07-13 22:03:54,410 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8347867448866338 [2022-07-13 22:03:54,410 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 5265 transitions. [2022-07-13 22:03:54,410 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 5265 transitions. [2022-07-13 22:03:54,413 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:03:54,413 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 5265 transitions. [2022-07-13 22:03:54,422 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 309.70588235294116) internal successors, (5265), 17 states have internal predecessors, (5265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:54,431 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 371.0) internal successors, (6678), 18 states have internal predecessors, (6678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:54,433 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 371.0) internal successors, (6678), 18 states have internal predecessors, (6678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:54,433 INFO L186 Difference]: Start difference. First operand has 354 places, 358 transitions, 918 flow. Second operand 17 states and 5265 transitions. [2022-07-13 22:03:54,433 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 370 places, 400 transitions, 1302 flow [2022-07-13 22:03:54,437 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 370 places, 400 transitions, 1302 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-07-13 22:03:54,442 INFO L242 Difference]: Finished difference. Result has 373 places, 379 transitions, 1181 flow [2022-07-13 22:03:54,443 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=371, PETRI_DIFFERENCE_MINUEND_FLOW=918, PETRI_DIFFERENCE_MINUEND_PLACES=354, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=358, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=319, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1181, PETRI_PLACES=373, PETRI_TRANSITIONS=379} [2022-07-13 22:03:54,443 INFO L279 CegarLoopForPetriNet]: 336 programPoint places, 37 predicate places. [2022-07-13 22:03:54,444 INFO L495 AbstractCegarLoop]: Abstraction has has 373 places, 379 transitions, 1181 flow [2022-07-13 22:03:54,445 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 306.8636363636364) internal successors, (6751), 22 states have internal predecessors, (6751), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:54,446 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:03:54,446 INFO L200 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:03:54,475 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-13 22:03:54,669 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:03:54,670 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-13 22:03:54,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:03:54,670 INFO L85 PathProgramCache]: Analyzing trace with hash 824957187, now seen corresponding path program 1 times [2022-07-13 22:03:54,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:03:54,671 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611811111] [2022-07-13 22:03:54,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:03:54,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:03:54,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:03:54,796 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2022-07-13 22:03:54,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:03:54,796 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611811111] [2022-07-13 22:03:54,796 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1611811111] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 22:03:54,796 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1492492532] [2022-07-13 22:03:54,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:03:54,797 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:03:54,797 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:03:54,798 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 22:03:54,800 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-13 22:03:54,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:03:54,966 INFO L263 TraceCheckSpWp]: Trace formula consists of 677 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-13 22:03:54,970 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:03:55,060 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2022-07-13 22:03:55,061 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 22:03:55,061 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1492492532] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:03:55,061 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 22:03:55,061 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 8 [2022-07-13 22:03:55,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592565887] [2022-07-13 22:03:55,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:03:55,063 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 22:03:55,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:03:55,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 22:03:55,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-07-13 22:03:55,067 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 328 out of 371 [2022-07-13 22:03:55,069 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 373 places, 379 transitions, 1181 flow. Second operand has 5 states, 5 states have (on average 331.2) internal successors, (1656), 5 states have internal predecessors, (1656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:55,069 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:03:55,069 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 328 of 371 [2022-07-13 22:03:55,069 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:03:55,859 INFO L129 PetriNetUnfolder]: 375/2866 cut-off events. [2022-07-13 22:03:55,859 INFO L130 PetriNetUnfolder]: For 606/675 co-relation queries the response was YES. [2022-07-13 22:03:55,880 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4357 conditions, 2866 events. 375/2866 cut-off events. For 606/675 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 22286 event pairs, 176 based on Foata normal form. 70/2800 useless extension candidates. Maximal degree in co-relation 4338. Up to 337 conditions per place. [2022-07-13 22:03:55,892 INFO L132 encePairwiseOnDemand]: 365/371 looper letters, 54 selfloop transitions, 13 changer transitions 0/422 dead transitions. [2022-07-13 22:03:55,893 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 379 places, 422 transitions, 1459 flow [2022-07-13 22:03:55,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 22:03:55,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-07-13 22:03:55,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2358 transitions. [2022-07-13 22:03:55,898 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9079707354639969 [2022-07-13 22:03:55,898 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2358 transitions. [2022-07-13 22:03:55,898 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2358 transitions. [2022-07-13 22:03:55,899 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:03:55,900 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2358 transitions. [2022-07-13 22:03:55,903 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 336.85714285714283) internal successors, (2358), 7 states have internal predecessors, (2358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:55,907 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 371.0) internal successors, (2968), 8 states have internal predecessors, (2968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:55,908 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 371.0) internal successors, (2968), 8 states have internal predecessors, (2968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:55,908 INFO L186 Difference]: Start difference. First operand has 373 places, 379 transitions, 1181 flow. Second operand 7 states and 2358 transitions. [2022-07-13 22:03:55,908 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 379 places, 422 transitions, 1459 flow [2022-07-13 22:03:55,914 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 371 places, 422 transitions, 1392 flow, removed 12 selfloop flow, removed 8 redundant places. [2022-07-13 22:03:55,919 INFO L242 Difference]: Finished difference. Result has 375 places, 389 transitions, 1202 flow [2022-07-13 22:03:55,920 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=371, PETRI_DIFFERENCE_MINUEND_FLOW=1114, PETRI_DIFFERENCE_MINUEND_PLACES=365, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=379, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=373, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1202, PETRI_PLACES=375, PETRI_TRANSITIONS=389} [2022-07-13 22:03:55,921 INFO L279 CegarLoopForPetriNet]: 336 programPoint places, 39 predicate places. [2022-07-13 22:03:55,921 INFO L495 AbstractCegarLoop]: Abstraction has has 375 places, 389 transitions, 1202 flow [2022-07-13 22:03:55,922 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 331.2) internal successors, (1656), 5 states have internal predecessors, (1656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:55,922 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:03:55,922 INFO L200 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:03:55,946 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-13 22:03:56,135 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:03:56,136 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-13 22:03:56,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:03:56,136 INFO L85 PathProgramCache]: Analyzing trace with hash 2039385131, now seen corresponding path program 2 times [2022-07-13 22:03:56,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:03:56,137 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851697901] [2022-07-13 22:03:56,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:03:56,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:03:56,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:03:56,458 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2022-07-13 22:03:56,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:03:56,459 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851697901] [2022-07-13 22:03:56,459 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [851697901] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 22:03:56,459 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1932984467] [2022-07-13 22:03:56,459 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-13 22:03:56,459 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:03:56,460 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:03:56,464 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 22:03:56,465 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-13 22:03:56,651 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-13 22:03:56,651 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 22:03:56,654 INFO L263 TraceCheckSpWp]: Trace formula consists of 676 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-13 22:03:56,660 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:03:56,774 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2022-07-13 22:03:56,774 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 22:03:56,913 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2022-07-13 22:03:56,913 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1932984467] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 22:03:56,913 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 22:03:56,914 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 7 [2022-07-13 22:03:56,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697881726] [2022-07-13 22:03:56,914 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 22:03:56,915 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 22:03:56,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:03:56,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 22:03:56,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-07-13 22:03:56,918 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 323 out of 371 [2022-07-13 22:03:56,920 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 375 places, 389 transitions, 1202 flow. Second operand has 7 states, 7 states have (on average 326.42857142857144) internal successors, (2285), 7 states have internal predecessors, (2285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:56,920 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:03:56,920 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 323 of 371 [2022-07-13 22:03:56,920 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:03:58,376 INFO L129 PetriNetUnfolder]: 794/5731 cut-off events. [2022-07-13 22:03:58,377 INFO L130 PetriNetUnfolder]: For 1597/1629 co-relation queries the response was YES. [2022-07-13 22:03:58,490 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8995 conditions, 5731 events. 794/5731 cut-off events. For 1597/1629 co-relation queries the response was YES. Maximal size of possible extension queue 184. Compared 56105 event pairs, 25 based on Foata normal form. 27/5531 useless extension candidates. Maximal degree in co-relation 8972. Up to 389 conditions per place. [2022-07-13 22:03:58,517 INFO L132 encePairwiseOnDemand]: 360/371 looper letters, 101 selfloop transitions, 36 changer transitions 2/488 dead transitions. [2022-07-13 22:03:58,518 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 385 places, 488 transitions, 1889 flow [2022-07-13 22:03:58,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-13 22:03:58,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-07-13 22:03:58,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 3663 transitions. [2022-07-13 22:03:58,525 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8975741239892183 [2022-07-13 22:03:58,525 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 3663 transitions. [2022-07-13 22:03:58,526 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 3663 transitions. [2022-07-13 22:03:58,527 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:03:58,528 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 3663 transitions. [2022-07-13 22:03:58,533 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 333.0) internal successors, (3663), 11 states have internal predecessors, (3663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:58,540 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 371.0) internal successors, (4452), 12 states have internal predecessors, (4452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:58,541 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 371.0) internal successors, (4452), 12 states have internal predecessors, (4452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:58,541 INFO L186 Difference]: Start difference. First operand has 375 places, 389 transitions, 1202 flow. Second operand 11 states and 3663 transitions. [2022-07-13 22:03:58,541 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 385 places, 488 transitions, 1889 flow [2022-07-13 22:03:58,556 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 385 places, 488 transitions, 1889 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-07-13 22:03:58,563 INFO L242 Difference]: Finished difference. Result has 393 places, 418 transitions, 1481 flow [2022-07-13 22:03:58,564 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=371, PETRI_DIFFERENCE_MINUEND_FLOW=1202, PETRI_DIFFERENCE_MINUEND_PLACES=375, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=389, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=375, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1481, PETRI_PLACES=393, PETRI_TRANSITIONS=418} [2022-07-13 22:03:58,565 INFO L279 CegarLoopForPetriNet]: 336 programPoint places, 57 predicate places. [2022-07-13 22:03:58,565 INFO L495 AbstractCegarLoop]: Abstraction has has 393 places, 418 transitions, 1481 flow [2022-07-13 22:03:58,566 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 326.42857142857144) internal successors, (2285), 7 states have internal predecessors, (2285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:58,566 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:03:58,566 INFO L200 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:03:58,593 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-07-13 22:03:58,786 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:03:58,786 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-13 22:03:58,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:03:58,787 INFO L85 PathProgramCache]: Analyzing trace with hash 764566735, now seen corresponding path program 2 times [2022-07-13 22:03:58,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:03:58,787 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1180568787] [2022-07-13 22:03:58,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:03:58,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:03:58,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:03:58,896 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2022-07-13 22:03:58,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:03:58,896 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1180568787] [2022-07-13 22:03:58,896 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1180568787] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 22:03:58,897 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [166403056] [2022-07-13 22:03:58,897 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-13 22:03:58,897 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:03:58,897 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:03:58,900 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 22:03:58,909 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-13 22:03:59,051 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-13 22:03:59,051 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 22:03:59,053 INFO L263 TraceCheckSpWp]: Trace formula consists of 426 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-13 22:03:59,057 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:03:59,178 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2022-07-13 22:03:59,178 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 22:03:59,179 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [166403056] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:03:59,179 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 22:03:59,179 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 10 [2022-07-13 22:03:59,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075174387] [2022-07-13 22:03:59,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:03:59,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 22:03:59,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:03:59,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 22:03:59,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-13 22:03:59,183 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 319 out of 371 [2022-07-13 22:03:59,185 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 393 places, 418 transitions, 1481 flow. Second operand has 6 states, 6 states have (on average 321.5) internal successors, (1929), 6 states have internal predecessors, (1929), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:59,185 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:03:59,185 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 319 of 371 [2022-07-13 22:03:59,185 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:04:01,574 INFO L129 PetriNetUnfolder]: 1178/10426 cut-off events. [2022-07-13 22:04:01,575 INFO L130 PetriNetUnfolder]: For 3021/3162 co-relation queries the response was YES. [2022-07-13 22:04:01,657 INFO L84 FinitePrefix]: Finished finitePrefix Result has 16343 conditions, 10426 events. 1178/10426 cut-off events. For 3021/3162 co-relation queries the response was YES. Maximal size of possible extension queue 226. Compared 115816 event pairs, 26 based on Foata normal form. 83/9843 useless extension candidates. Maximal degree in co-relation 16311. Up to 613 conditions per place. [2022-07-13 22:04:01,700 INFO L132 encePairwiseOnDemand]: 359/371 looper letters, 83 selfloop transitions, 33 changer transitions 0/505 dead transitions. [2022-07-13 22:04:01,700 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 405 places, 505 transitions, 1916 flow [2022-07-13 22:04:01,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-13 22:04:01,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-07-13 22:04:01,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 4266 transitions. [2022-07-13 22:04:01,709 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8845117147003939 [2022-07-13 22:04:01,709 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 4266 transitions. [2022-07-13 22:04:01,709 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 4266 transitions. [2022-07-13 22:04:01,711 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:04:01,712 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 4266 transitions. [2022-07-13 22:04:01,719 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 328.15384615384613) internal successors, (4266), 13 states have internal predecessors, (4266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:01,726 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 371.0) internal successors, (5194), 14 states have internal predecessors, (5194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:01,727 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 371.0) internal successors, (5194), 14 states have internal predecessors, (5194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:01,728 INFO L186 Difference]: Start difference. First operand has 393 places, 418 transitions, 1481 flow. Second operand 13 states and 4266 transitions. [2022-07-13 22:04:01,728 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 405 places, 505 transitions, 1916 flow [2022-07-13 22:04:01,765 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 405 places, 505 transitions, 1908 flow, removed 4 selfloop flow, removed 0 redundant places. [2022-07-13 22:04:01,771 INFO L242 Difference]: Finished difference. Result has 411 places, 449 transitions, 1669 flow [2022-07-13 22:04:01,772 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=371, PETRI_DIFFERENCE_MINUEND_FLOW=1473, PETRI_DIFFERENCE_MINUEND_PLACES=393, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=418, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=407, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1669, PETRI_PLACES=411, PETRI_TRANSITIONS=449} [2022-07-13 22:04:01,773 INFO L279 CegarLoopForPetriNet]: 336 programPoint places, 75 predicate places. [2022-07-13 22:04:01,773 INFO L495 AbstractCegarLoop]: Abstraction has has 411 places, 449 transitions, 1669 flow [2022-07-13 22:04:01,774 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 321.5) internal successors, (1929), 6 states have internal predecessors, (1929), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:01,774 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:04:01,775 INFO L200 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:04:01,801 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-07-13 22:04:01,995 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:04:01,996 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-13 22:04:01,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:04:01,996 INFO L85 PathProgramCache]: Analyzing trace with hash 1811624977, now seen corresponding path program 3 times [2022-07-13 22:04:01,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:04:01,996 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091194894] [2022-07-13 22:04:01,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:04:01,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:04:02,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:04:02,095 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2022-07-13 22:04:02,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:04:02,096 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091194894] [2022-07-13 22:04:02,096 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2091194894] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 22:04:02,096 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2051410992] [2022-07-13 22:04:02,096 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-13 22:04:02,097 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:04:02,097 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:04:02,098 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 22:04:02,099 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-07-13 22:04:02,247 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-07-13 22:04:02,247 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 22:04:02,249 INFO L263 TraceCheckSpWp]: Trace formula consists of 429 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-13 22:04:02,253 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:04:02,329 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2022-07-13 22:04:02,329 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 22:04:02,329 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2051410992] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:04:02,329 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 22:04:02,330 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 10 [2022-07-13 22:04:02,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691330927] [2022-07-13 22:04:02,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:04:02,331 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 22:04:02,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:04:02,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 22:04:02,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-13 22:04:02,334 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 319 out of 371 [2022-07-13 22:04:02,335 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 411 places, 449 transitions, 1669 flow. Second operand has 6 states, 6 states have (on average 321.5) internal successors, (1929), 6 states have internal predecessors, (1929), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:02,335 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:04:02,335 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 319 of 371 [2022-07-13 22:04:02,336 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:04:05,530 INFO L129 PetriNetUnfolder]: 1659/13514 cut-off events. [2022-07-13 22:04:05,530 INFO L130 PetriNetUnfolder]: For 5199/5716 co-relation queries the response was YES. [2022-07-13 22:04:05,653 INFO L84 FinitePrefix]: Finished finitePrefix Result has 21894 conditions, 13514 events. 1659/13514 cut-off events. For 5199/5716 co-relation queries the response was YES. Maximal size of possible extension queue 252. Compared 154468 event pairs, 464 based on Foata normal form. 119/12974 useless extension candidates. Maximal degree in co-relation 21855. Up to 883 conditions per place. [2022-07-13 22:04:05,738 INFO L132 encePairwiseOnDemand]: 362/371 looper letters, 135 selfloop transitions, 27 changer transitions 0/551 dead transitions. [2022-07-13 22:04:05,739 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 419 places, 551 transitions, 2402 flow [2022-07-13 22:04:05,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-13 22:04:05,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-07-13 22:04:05,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2970 transitions. [2022-07-13 22:04:05,745 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.889487870619946 [2022-07-13 22:04:05,745 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2970 transitions. [2022-07-13 22:04:05,745 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2970 transitions. [2022-07-13 22:04:05,746 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:04:05,747 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2970 transitions. [2022-07-13 22:04:05,751 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 330.0) internal successors, (2970), 9 states have internal predecessors, (2970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:05,756 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 371.0) internal successors, (3710), 10 states have internal predecessors, (3710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:05,757 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 371.0) internal successors, (3710), 10 states have internal predecessors, (3710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:05,757 INFO L186 Difference]: Start difference. First operand has 411 places, 449 transitions, 1669 flow. Second operand 9 states and 2970 transitions. [2022-07-13 22:04:05,757 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 419 places, 551 transitions, 2402 flow [2022-07-13 22:04:05,795 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 419 places, 551 transitions, 2402 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-07-13 22:04:05,801 INFO L242 Difference]: Finished difference. Result has 424 places, 470 transitions, 1873 flow [2022-07-13 22:04:05,802 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=371, PETRI_DIFFERENCE_MINUEND_FLOW=1669, PETRI_DIFFERENCE_MINUEND_PLACES=411, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=449, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=433, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1873, PETRI_PLACES=424, PETRI_TRANSITIONS=470} [2022-07-13 22:04:05,803 INFO L279 CegarLoopForPetriNet]: 336 programPoint places, 88 predicate places. [2022-07-13 22:04:05,803 INFO L495 AbstractCegarLoop]: Abstraction has has 424 places, 470 transitions, 1873 flow [2022-07-13 22:04:05,804 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 321.5) internal successors, (1929), 6 states have internal predecessors, (1929), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:05,804 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:04:05,804 INFO L200 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:04:05,832 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-07-13 22:04:06,023 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:04:06,024 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-13 22:04:06,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:04:06,024 INFO L85 PathProgramCache]: Analyzing trace with hash 242335789, now seen corresponding path program 4 times [2022-07-13 22:04:06,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:04:06,024 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017310785] [2022-07-13 22:04:06,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:04:06,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:04:06,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:04:06,112 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2022-07-13 22:04:06,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:04:06,113 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1017310785] [2022-07-13 22:04:06,113 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1017310785] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 22:04:06,113 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [499128364] [2022-07-13 22:04:06,113 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-07-13 22:04:06,114 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:04:06,114 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:04:06,115 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 22:04:06,116 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-07-13 22:04:06,402 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-07-13 22:04:06,402 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 22:04:06,405 INFO L263 TraceCheckSpWp]: Trace formula consists of 677 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-13 22:04:06,409 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:04:06,543 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2022-07-13 22:04:06,543 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 22:04:06,711 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2022-07-13 22:04:06,711 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [499128364] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-13 22:04:06,711 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-07-13 22:04:06,712 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 11 [2022-07-13 22:04:06,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121181849] [2022-07-13 22:04:06,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:04:06,713 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 22:04:06,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:04:06,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 22:04:06,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-07-13 22:04:06,715 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 328 out of 371 [2022-07-13 22:04:06,717 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 424 places, 470 transitions, 1873 flow. Second operand has 5 states, 5 states have (on average 331.2) internal successors, (1656), 5 states have internal predecessors, (1656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:06,717 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:04:06,717 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 328 of 371 [2022-07-13 22:04:06,717 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:04:11,273 INFO L129 PetriNetUnfolder]: 3045/22215 cut-off events. [2022-07-13 22:04:11,273 INFO L130 PetriNetUnfolder]: For 19241/20785 co-relation queries the response was YES. [2022-07-13 22:04:11,500 INFO L84 FinitePrefix]: Finished finitePrefix Result has 40332 conditions, 22215 events. 3045/22215 cut-off events. For 19241/20785 co-relation queries the response was YES. Maximal size of possible extension queue 560. Compared 295720 event pairs, 644 based on Foata normal form. 842/21852 useless extension candidates. Maximal degree in co-relation 40287. Up to 1680 conditions per place. [2022-07-13 22:04:11,586 INFO L132 encePairwiseOnDemand]: 360/371 looper letters, 58 selfloop transitions, 55 changer transitions 0/522 dead transitions. [2022-07-13 22:04:11,587 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 429 places, 522 transitions, 2412 flow [2022-07-13 22:04:11,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-13 22:04:11,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-07-13 22:04:11,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2036 transitions. [2022-07-13 22:04:11,592 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9146451033243486 [2022-07-13 22:04:11,592 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2036 transitions. [2022-07-13 22:04:11,593 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2036 transitions. [2022-07-13 22:04:11,594 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:04:11,594 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2036 transitions. [2022-07-13 22:04:11,600 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 339.3333333333333) internal successors, (2036), 6 states have internal predecessors, (2036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:11,603 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 371.0) internal successors, (2597), 7 states have internal predecessors, (2597), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:11,604 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 371.0) internal successors, (2597), 7 states have internal predecessors, (2597), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:11,604 INFO L186 Difference]: Start difference. First operand has 424 places, 470 transitions, 1873 flow. Second operand 6 states and 2036 transitions. [2022-07-13 22:04:11,604 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 429 places, 522 transitions, 2412 flow [2022-07-13 22:04:11,762 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 429 places, 522 transitions, 2404 flow, removed 4 selfloop flow, removed 0 redundant places. [2022-07-13 22:04:11,767 INFO L242 Difference]: Finished difference. Result has 433 places, 492 transitions, 2243 flow [2022-07-13 22:04:11,768 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=371, PETRI_DIFFERENCE_MINUEND_FLOW=1865, PETRI_DIFFERENCE_MINUEND_PLACES=424, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=470, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=429, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2243, PETRI_PLACES=433, PETRI_TRANSITIONS=492} [2022-07-13 22:04:11,769 INFO L279 CegarLoopForPetriNet]: 336 programPoint places, 97 predicate places. [2022-07-13 22:04:11,769 INFO L495 AbstractCegarLoop]: Abstraction has has 433 places, 492 transitions, 2243 flow [2022-07-13 22:04:11,769 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 331.2) internal successors, (1656), 5 states have internal predecessors, (1656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:11,769 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:04:11,770 INFO L200 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:04:11,795 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-07-13 22:04:11,991 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-07-13 22:04:11,992 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-13 22:04:11,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:04:11,992 INFO L85 PathProgramCache]: Analyzing trace with hash 2115456373, now seen corresponding path program 5 times [2022-07-13 22:04:11,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:04:11,992 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2009716514] [2022-07-13 22:04:11,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:04:11,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:04:12,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:04:12,085 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2022-07-13 22:04:12,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:04:12,086 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2009716514] [2022-07-13 22:04:12,086 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2009716514] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 22:04:12,086 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [192927753] [2022-07-13 22:04:12,086 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-07-13 22:04:12,087 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:04:12,087 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:04:12,088 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 22:04:12,089 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-07-13 22:04:12,489 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2022-07-13 22:04:12,489 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 22:04:12,493 INFO L263 TraceCheckSpWp]: Trace formula consists of 677 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-13 22:04:12,498 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:04:12,623 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2022-07-13 22:04:12,623 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 22:04:12,785 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2022-07-13 22:04:12,786 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [192927753] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-13 22:04:12,786 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-07-13 22:04:12,786 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 11 [2022-07-13 22:04:12,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572266325] [2022-07-13 22:04:12,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:04:12,787 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 22:04:12,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:04:12,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 22:04:12,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-07-13 22:04:12,790 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 328 out of 371 [2022-07-13 22:04:12,791 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 433 places, 492 transitions, 2243 flow. Second operand has 5 states, 5 states have (on average 331.2) internal successors, (1656), 5 states have internal predecessors, (1656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:12,792 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:04:12,792 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 328 of 371 [2022-07-13 22:04:12,792 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:04:18,218 INFO L129 PetriNetUnfolder]: 3077/25211 cut-off events. [2022-07-13 22:04:18,218 INFO L130 PetriNetUnfolder]: For 32300/34627 co-relation queries the response was YES. [2022-07-13 22:04:18,490 INFO L84 FinitePrefix]: Finished finitePrefix Result has 47400 conditions, 25211 events. 3077/25211 cut-off events. For 32300/34627 co-relation queries the response was YES. Maximal size of possible extension queue 570. Compared 342270 event pairs, 723 based on Foata normal form. 780/24866 useless extension candidates. Maximal degree in co-relation 47350. Up to 1856 conditions per place. [2022-07-13 22:04:18,743 INFO L132 encePairwiseOnDemand]: 363/371 looper letters, 73 selfloop transitions, 55 changer transitions 0/537 dead transitions. [2022-07-13 22:04:18,743 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 438 places, 537 transitions, 2796 flow [2022-07-13 22:04:18,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-13 22:04:18,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-07-13 22:04:18,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2031 transitions. [2022-07-13 22:04:18,751 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9123989218328841 [2022-07-13 22:04:18,751 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2031 transitions. [2022-07-13 22:04:18,751 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2031 transitions. [2022-07-13 22:04:18,751 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:04:18,752 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2031 transitions. [2022-07-13 22:04:18,754 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 338.5) internal successors, (2031), 6 states have internal predecessors, (2031), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:18,758 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 371.0) internal successors, (2597), 7 states have internal predecessors, (2597), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:18,758 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 371.0) internal successors, (2597), 7 states have internal predecessors, (2597), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:18,759 INFO L186 Difference]: Start difference. First operand has 433 places, 492 transitions, 2243 flow. Second operand 6 states and 2031 transitions. [2022-07-13 22:04:18,759 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 438 places, 537 transitions, 2796 flow [2022-07-13 22:04:18,951 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 438 places, 537 transitions, 2794 flow, removed 1 selfloop flow, removed 0 redundant places. [2022-07-13 22:04:18,956 INFO L242 Difference]: Finished difference. Result has 443 places, 505 transitions, 2610 flow [2022-07-13 22:04:18,957 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=371, PETRI_DIFFERENCE_MINUEND_FLOW=2241, PETRI_DIFFERENCE_MINUEND_PLACES=433, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=492, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=442, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2610, PETRI_PLACES=443, PETRI_TRANSITIONS=505} [2022-07-13 22:04:18,957 INFO L279 CegarLoopForPetriNet]: 336 programPoint places, 107 predicate places. [2022-07-13 22:04:18,957 INFO L495 AbstractCegarLoop]: Abstraction has has 443 places, 505 transitions, 2610 flow [2022-07-13 22:04:18,958 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 331.2) internal successors, (1656), 5 states have internal predecessors, (1656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:18,958 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:04:18,959 INFO L200 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:04:18,987 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-07-13 22:04:19,184 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-07-13 22:04:19,184 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-13 22:04:19,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:04:19,185 INFO L85 PathProgramCache]: Analyzing trace with hash 1545462397, now seen corresponding path program 6 times [2022-07-13 22:04:19,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:04:19,185 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [986653761] [2022-07-13 22:04:19,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:04:19,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:04:19,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:04:19,285 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2022-07-13 22:04:19,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:04:19,286 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [986653761] [2022-07-13 22:04:19,286 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [986653761] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 22:04:19,286 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [769746232] [2022-07-13 22:04:19,286 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-07-13 22:04:19,287 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:04:19,287 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:04:19,288 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 22:04:19,289 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-07-13 22:04:19,454 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2022-07-13 22:04:19,454 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 22:04:19,456 INFO L263 TraceCheckSpWp]: Trace formula consists of 429 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-13 22:04:19,460 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:04:19,604 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2022-07-13 22:04:19,605 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 22:04:19,605 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [769746232] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:04:19,605 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 22:04:19,605 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 10 [2022-07-13 22:04:19,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140243731] [2022-07-13 22:04:19,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:04:19,606 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 22:04:19,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:04:19,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 22:04:19,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-13 22:04:19,608 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 319 out of 371 [2022-07-13 22:04:19,610 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 443 places, 505 transitions, 2610 flow. Second operand has 6 states, 6 states have (on average 321.5) internal successors, (1929), 6 states have internal predecessors, (1929), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:19,610 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:04:19,610 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 319 of 371 [2022-07-13 22:04:19,610 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:04:26,701 INFO L129 PetriNetUnfolder]: 3790/29097 cut-off events. [2022-07-13 22:04:26,702 INFO L130 PetriNetUnfolder]: For 40411/41727 co-relation queries the response was YES. [2022-07-13 22:04:27,050 INFO L84 FinitePrefix]: Finished finitePrefix Result has 56963 conditions, 29097 events. 3790/29097 cut-off events. For 40411/41727 co-relation queries the response was YES. Maximal size of possible extension queue 551. Compared 393393 event pairs, 942 based on Foata normal form. 415/28533 useless extension candidates. Maximal degree in co-relation 56908. Up to 2242 conditions per place. [2022-07-13 22:04:27,147 INFO L132 encePairwiseOnDemand]: 360/371 looper letters, 108 selfloop transitions, 61 changer transitions 2/595 dead transitions. [2022-07-13 22:04:27,147 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 455 places, 595 transitions, 3395 flow [2022-07-13 22:04:27,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-13 22:04:27,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-07-13 22:04:27,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 4272 transitions. [2022-07-13 22:04:27,152 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.885755753680282 [2022-07-13 22:04:27,152 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 4272 transitions. [2022-07-13 22:04:27,152 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 4272 transitions. [2022-07-13 22:04:27,154 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:04:27,154 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 4272 transitions. [2022-07-13 22:04:27,159 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 328.61538461538464) internal successors, (4272), 13 states have internal predecessors, (4272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:27,166 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 371.0) internal successors, (5194), 14 states have internal predecessors, (5194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:27,167 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 371.0) internal successors, (5194), 14 states have internal predecessors, (5194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:27,167 INFO L186 Difference]: Start difference. First operand has 443 places, 505 transitions, 2610 flow. Second operand 13 states and 4272 transitions. [2022-07-13 22:04:27,167 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 455 places, 595 transitions, 3395 flow [2022-07-13 22:04:27,434 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 452 places, 595 transitions, 3325 flow, removed 10 selfloop flow, removed 3 redundant places. [2022-07-13 22:04:27,439 INFO L242 Difference]: Finished difference. Result has 460 places, 526 transitions, 2927 flow [2022-07-13 22:04:27,440 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=371, PETRI_DIFFERENCE_MINUEND_FLOW=2540, PETRI_DIFFERENCE_MINUEND_PLACES=440, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=505, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=458, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2927, PETRI_PLACES=460, PETRI_TRANSITIONS=526} [2022-07-13 22:04:27,441 INFO L279 CegarLoopForPetriNet]: 336 programPoint places, 124 predicate places. [2022-07-13 22:04:27,441 INFO L495 AbstractCegarLoop]: Abstraction has has 460 places, 526 transitions, 2927 flow [2022-07-13 22:04:27,441 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 321.5) internal successors, (1929), 6 states have internal predecessors, (1929), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:27,441 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:04:27,441 INFO L200 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:04:27,460 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2022-07-13 22:04:27,647 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-07-13 22:04:27,648 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-13 22:04:27,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:04:27,648 INFO L85 PathProgramCache]: Analyzing trace with hash -2041074423, now seen corresponding path program 1 times [2022-07-13 22:04:27,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:04:27,648 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1345213688] [2022-07-13 22:04:27,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:04:27,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:04:27,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:04:27,723 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2022-07-13 22:04:27,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:04:27,723 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1345213688] [2022-07-13 22:04:27,724 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1345213688] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:04:27,724 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:04:27,724 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 22:04:27,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780335733] [2022-07-13 22:04:27,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:04:27,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 22:04:27,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:04:27,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 22:04:27,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 22:04:27,727 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 331 out of 371 [2022-07-13 22:04:27,728 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 460 places, 526 transitions, 2927 flow. Second operand has 4 states, 4 states have (on average 333.5) internal successors, (1334), 4 states have internal predecessors, (1334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:27,728 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:04:27,728 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 331 of 371 [2022-07-13 22:04:27,728 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:04:31,731 INFO L129 PetriNetUnfolder]: 1058/17922 cut-off events. [2022-07-13 22:04:31,731 INFO L130 PetriNetUnfolder]: For 22070/23336 co-relation queries the response was YES. [2022-07-13 22:04:32,082 INFO L84 FinitePrefix]: Finished finitePrefix Result has 31595 conditions, 17922 events. 1058/17922 cut-off events. For 22070/23336 co-relation queries the response was YES. Maximal size of possible extension queue 287. Compared 228706 event pairs, 109 based on Foata normal form. 324/17590 useless extension candidates. Maximal degree in co-relation 31533. Up to 445 conditions per place. [2022-07-13 22:04:32,127 INFO L132 encePairwiseOnDemand]: 366/371 looper letters, 80 selfloop transitions, 4 changer transitions 0/542 dead transitions. [2022-07-13 22:04:32,127 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 463 places, 542 transitions, 3137 flow [2022-07-13 22:04:32,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 22:04:32,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-07-13 22:04:32,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1693 transitions. [2022-07-13 22:04:32,129 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9126684636118598 [2022-07-13 22:04:32,129 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1693 transitions. [2022-07-13 22:04:32,130 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1693 transitions. [2022-07-13 22:04:32,130 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:04:32,130 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1693 transitions. [2022-07-13 22:04:32,132 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 338.6) internal successors, (1693), 5 states have internal predecessors, (1693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:32,135 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 371.0) internal successors, (2226), 6 states have internal predecessors, (2226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:32,135 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 371.0) internal successors, (2226), 6 states have internal predecessors, (2226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:32,135 INFO L186 Difference]: Start difference. First operand has 460 places, 526 transitions, 2927 flow. Second operand 5 states and 1693 transitions. [2022-07-13 22:04:32,135 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 463 places, 542 transitions, 3137 flow [2022-07-13 22:04:32,257 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 460 places, 542 transitions, 3110 flow, removed 6 selfloop flow, removed 3 redundant places. [2022-07-13 22:04:32,262 INFO L242 Difference]: Finished difference. Result has 462 places, 521 transitions, 2879 flow [2022-07-13 22:04:32,263 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=371, PETRI_DIFFERENCE_MINUEND_FLOW=2847, PETRI_DIFFERENCE_MINUEND_PLACES=456, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=519, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=515, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2879, PETRI_PLACES=462, PETRI_TRANSITIONS=521} [2022-07-13 22:04:32,263 INFO L279 CegarLoopForPetriNet]: 336 programPoint places, 126 predicate places. [2022-07-13 22:04:32,263 INFO L495 AbstractCegarLoop]: Abstraction has has 462 places, 521 transitions, 2879 flow [2022-07-13 22:04:32,264 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 333.5) internal successors, (1334), 4 states have internal predecessors, (1334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:32,264 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:04:32,264 INFO L200 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:04:32,264 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-13 22:04:32,264 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-13 22:04:32,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:04:32,265 INFO L85 PathProgramCache]: Analyzing trace with hash 1416166265, now seen corresponding path program 7 times [2022-07-13 22:04:32,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:04:32,265 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830529131] [2022-07-13 22:04:32,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:04:32,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:04:32,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:04:32,341 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2022-07-13 22:04:32,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:04:32,342 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [830529131] [2022-07-13 22:04:32,342 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [830529131] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 22:04:32,342 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [905527049] [2022-07-13 22:04:32,342 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-07-13 22:04:32,343 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:04:32,343 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:04:32,348 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 22:04:32,350 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-07-13 22:04:32,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:04:32,545 INFO L263 TraceCheckSpWp]: Trace formula consists of 677 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-13 22:04:32,561 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:04:32,628 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2022-07-13 22:04:32,629 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 22:04:32,629 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [905527049] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:04:32,629 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 22:04:32,629 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 8 [2022-07-13 22:04:32,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163902795] [2022-07-13 22:04:32,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:04:32,630 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 22:04:32,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:04:32,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 22:04:32,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-07-13 22:04:32,632 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 328 out of 371 [2022-07-13 22:04:32,634 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 462 places, 521 transitions, 2879 flow. Second operand has 5 states, 5 states have (on average 331.2) internal successors, (1656), 5 states have internal predecessors, (1656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:32,634 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:04:32,634 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 328 of 371 [2022-07-13 22:04:32,634 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:04:39,738 INFO L129 PetriNetUnfolder]: 3743/30806 cut-off events. [2022-07-13 22:04:39,738 INFO L130 PetriNetUnfolder]: For 56760/60269 co-relation queries the response was YES. [2022-07-13 22:04:40,142 INFO L84 FinitePrefix]: Finished finitePrefix Result has 62473 conditions, 30806 events. 3743/30806 cut-off events. For 56760/60269 co-relation queries the response was YES. Maximal size of possible extension queue 661. Compared 431740 event pairs, 1087 based on Foata normal form. 1045/30507 useless extension candidates. Maximal degree in co-relation 62409. Up to 2406 conditions per place. [2022-07-13 22:04:40,238 INFO L132 encePairwiseOnDemand]: 363/371 looper letters, 96 selfloop transitions, 39 changer transitions 3/563 dead transitions. [2022-07-13 22:04:40,238 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 468 places, 563 transitions, 3457 flow [2022-07-13 22:04:40,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 22:04:40,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-07-13 22:04:40,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2366 transitions. [2022-07-13 22:04:40,241 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9110512129380054 [2022-07-13 22:04:40,241 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2366 transitions. [2022-07-13 22:04:40,241 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2366 transitions. [2022-07-13 22:04:40,242 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:04:40,242 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2366 transitions. [2022-07-13 22:04:40,246 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 338.0) internal successors, (2366), 7 states have internal predecessors, (2366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:40,249 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 371.0) internal successors, (2968), 8 states have internal predecessors, (2968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:40,250 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 371.0) internal successors, (2968), 8 states have internal predecessors, (2968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:40,250 INFO L186 Difference]: Start difference. First operand has 462 places, 521 transitions, 2879 flow. Second operand 7 states and 2366 transitions. [2022-07-13 22:04:40,250 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 468 places, 563 transitions, 3457 flow [2022-07-13 22:04:40,749 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 468 places, 563 transitions, 3457 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-07-13 22:04:40,754 INFO L242 Difference]: Finished difference. Result has 471 places, 528 transitions, 3097 flow [2022-07-13 22:04:40,754 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=371, PETRI_DIFFERENCE_MINUEND_FLOW=2867, PETRI_DIFFERENCE_MINUEND_PLACES=462, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=520, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=485, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3097, PETRI_PLACES=471, PETRI_TRANSITIONS=528} [2022-07-13 22:04:40,755 INFO L279 CegarLoopForPetriNet]: 336 programPoint places, 135 predicate places. [2022-07-13 22:04:40,755 INFO L495 AbstractCegarLoop]: Abstraction has has 471 places, 528 transitions, 3097 flow [2022-07-13 22:04:40,755 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 331.2) internal successors, (1656), 5 states have internal predecessors, (1656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:40,755 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:04:40,756 INFO L200 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:04:40,775 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-07-13 22:04:40,956 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-07-13 22:04:40,957 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-13 22:04:40,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:04:40,957 INFO L85 PathProgramCache]: Analyzing trace with hash 2023621987, now seen corresponding path program 8 times [2022-07-13 22:04:40,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:04:40,958 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024529136] [2022-07-13 22:04:40,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:04:40,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:04:40,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:04:41,047 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2022-07-13 22:04:41,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:04:41,048 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024529136] [2022-07-13 22:04:41,048 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2024529136] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 22:04:41,048 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [862344368] [2022-07-13 22:04:41,048 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-13 22:04:41,048 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:04:41,049 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:04:41,052 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 22:04:41,080 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-07-13 22:04:41,218 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-13 22:04:41,218 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 22:04:41,220 INFO L263 TraceCheckSpWp]: Trace formula consists of 429 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-13 22:04:41,223 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:04:41,360 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2022-07-13 22:04:41,360 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 22:04:41,360 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [862344368] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:04:41,360 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 22:04:41,360 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 10 [2022-07-13 22:04:41,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530854580] [2022-07-13 22:04:41,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:04:41,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 22:04:41,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:04:41,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 22:04:41,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-13 22:04:41,364 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 319 out of 371 [2022-07-13 22:04:41,365 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 471 places, 528 transitions, 3097 flow. Second operand has 6 states, 6 states have (on average 321.5) internal successors, (1929), 6 states have internal predecessors, (1929), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:41,365 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:04:41,365 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 319 of 371 [2022-07-13 22:04:41,366 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand