./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/unroll-cond-4.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version eb692b52 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/unroll-cond-4.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 4755329f7559a8be1422f8772c1ed30abe185c2742a237de140cc196ec4e9010 --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-19 21:47:01,965 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-19 21:47:01,967 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-19 21:47:02,006 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-19 21:47:02,007 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-19 21:47:02,007 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-19 21:47:02,013 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-19 21:47:02,015 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-19 21:47:02,016 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-19 21:47:02,019 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-19 21:47:02,020 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-19 21:47:02,021 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-19 21:47:02,023 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-19 21:47:02,024 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-19 21:47:02,026 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-19 21:47:02,027 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-19 21:47:02,030 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-19 21:47:02,030 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-19 21:47:02,036 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-19 21:47:02,037 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-19 21:47:02,038 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-19 21:47:02,046 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-19 21:47:02,047 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-19 21:47:02,047 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-19 21:47:02,048 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-19 21:47:02,050 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-19 21:47:02,050 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-19 21:47:02,051 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-19 21:47:02,051 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-19 21:47:02,054 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-19 21:47:02,055 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-19 21:47:02,055 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-19 21:47:02,056 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-19 21:47:02,057 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-19 21:47:02,058 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-19 21:47:02,059 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-19 21:47:02,060 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-19 21:47:02,061 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-19 21:47:02,061 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-19 21:47:02,062 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-19 21:47:02,062 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-19 21:47:02,063 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-19 21:47:02,065 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-19 21:47:02,083 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-19 21:47:02,084 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-19 21:47:02,084 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-19 21:47:02,086 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-19 21:47:02,087 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-19 21:47:02,087 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-19 21:47:02,087 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-19 21:47:02,088 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-19 21:47:02,088 INFO L138 SettingsManager]: * Use SBE=true [2022-07-19 21:47:02,088 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-19 21:47:02,088 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-19 21:47:02,088 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-19 21:47:02,088 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-19 21:47:02,089 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-19 21:47:02,089 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-19 21:47:02,090 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-19 21:47:02,090 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-19 21:47:02,090 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-19 21:47:02,090 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-19 21:47:02,090 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-19 21:47:02,092 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-19 21:47:02,092 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-19 21:47:02,092 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-19 21:47:02,092 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-19 21:47:02,092 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 21:47:02,093 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-19 21:47:02,093 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-19 21:47:02,093 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-19 21:47:02,093 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-19 21:47:02,094 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-19 21:47:02,094 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-19 21:47:02,094 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-19 21:47:02,094 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-19 21:47:02,094 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4755329f7559a8be1422f8772c1ed30abe185c2742a237de140cc196ec4e9010 [2022-07-19 21:47:02,247 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-19 21:47:02,277 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-19 21:47:02,279 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-19 21:47:02,280 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-19 21:47:02,280 INFO L275 PluginConnector]: CDTParser initialized [2022-07-19 21:47:02,281 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/unroll-cond-4.wvr.c [2022-07-19 21:47:02,343 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/acf22283e/c47994cfa4e74c389319c11852a69523/FLAGa99c92b2f [2022-07-19 21:47:02,736 INFO L306 CDTParser]: Found 1 translation units. [2022-07-19 21:47:02,737 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/unroll-cond-4.wvr.c [2022-07-19 21:47:02,744 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/acf22283e/c47994cfa4e74c389319c11852a69523/FLAGa99c92b2f [2022-07-19 21:47:03,131 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/acf22283e/c47994cfa4e74c389319c11852a69523 [2022-07-19 21:47:03,133 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-19 21:47:03,135 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-19 21:47:03,138 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-19 21:47:03,138 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-19 21:47:03,141 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-19 21:47:03,141 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 09:47:03" (1/1) ... [2022-07-19 21:47:03,142 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@48640ae3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:47:03, skipping insertion in model container [2022-07-19 21:47:03,142 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 09:47:03" (1/1) ... [2022-07-19 21:47:03,146 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-19 21:47:03,167 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-19 21:47:03,345 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/unroll-cond-4.wvr.c[2808,2821] [2022-07-19 21:47:03,350 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 21:47:03,354 INFO L203 MainTranslator]: Completed pre-run [2022-07-19 21:47:03,379 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/unroll-cond-4.wvr.c[2808,2821] [2022-07-19 21:47:03,382 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 21:47:03,390 INFO L208 MainTranslator]: Completed translation [2022-07-19 21:47:03,390 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:47:03 WrapperNode [2022-07-19 21:47:03,391 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-19 21:47:03,391 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-19 21:47:03,391 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-19 21:47:03,392 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-19 21:47:03,405 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:47:03" (1/1) ... [2022-07-19 21:47:03,417 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:47:03" (1/1) ... [2022-07-19 21:47:03,432 INFO L137 Inliner]: procedures = 24, calls = 41, calls flagged for inlining = 15, calls inlined = 15, statements flattened = 183 [2022-07-19 21:47:03,432 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-19 21:47:03,432 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-19 21:47:03,433 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-19 21:47:03,433 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-19 21:47:03,438 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:47:03" (1/1) ... [2022-07-19 21:47:03,438 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:47:03" (1/1) ... [2022-07-19 21:47:03,440 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:47:03" (1/1) ... [2022-07-19 21:47:03,440 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:47:03" (1/1) ... [2022-07-19 21:47:03,445 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:47:03" (1/1) ... [2022-07-19 21:47:03,448 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:47:03" (1/1) ... [2022-07-19 21:47:03,449 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:47:03" (1/1) ... [2022-07-19 21:47:03,452 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-19 21:47:03,455 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-19 21:47:03,455 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-19 21:47:03,458 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-19 21:47:03,459 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:47:03" (1/1) ... [2022-07-19 21:47:03,464 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 21:47:03,471 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 21:47:03,479 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) [2022-07-19 21:47:03,488 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 [2022-07-19 21:47:03,503 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-19 21:47:03,504 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-07-19 21:47:03,504 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-07-19 21:47:03,504 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-07-19 21:47:03,504 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-07-19 21:47:03,504 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-19 21:47:03,504 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-19 21:47:03,504 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-19 21:47:03,505 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-19 21:47:03,505 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-19 21:47:03,505 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-19 21:47:03,505 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-19 21:47:03,505 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-19 21:47:03,506 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-07-19 21:47:03,569 INFO L234 CfgBuilder]: Building ICFG [2022-07-19 21:47:03,570 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-19 21:47:03,801 INFO L275 CfgBuilder]: Performing block encoding [2022-07-19 21:47:03,808 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-19 21:47:03,808 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2022-07-19 21:47:03,810 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 09:47:03 BoogieIcfgContainer [2022-07-19 21:47:03,810 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-19 21:47:03,811 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-19 21:47:03,811 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-19 21:47:03,813 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-19 21:47:03,813 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 09:47:03" (1/3) ... [2022-07-19 21:47:03,814 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d6e0fba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 09:47:03, skipping insertion in model container [2022-07-19 21:47:03,814 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:47:03" (2/3) ... [2022-07-19 21:47:03,814 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d6e0fba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 09:47:03, skipping insertion in model container [2022-07-19 21:47:03,814 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 09:47:03" (3/3) ... [2022-07-19 21:47:03,815 INFO L111 eAbstractionObserver]: Analyzing ICFG unroll-cond-4.wvr.c [2022-07-19 21:47:03,818 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-19 21:47:03,824 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-19 21:47:03,824 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-19 21:47:03,824 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-19 21:47:03,905 INFO L135 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-07-19 21:47:03,979 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 225 places, 239 transitions, 494 flow [2022-07-19 21:47:04,065 INFO L129 PetriNetUnfolder]: 21/237 cut-off events. [2022-07-19 21:47:04,067 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-07-19 21:47:04,071 INFO L84 FinitePrefix]: Finished finitePrefix Result has 246 conditions, 237 events. 21/237 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 402 event pairs, 0 based on Foata normal form. 0/215 useless extension candidates. Maximal degree in co-relation 141. Up to 2 conditions per place. [2022-07-19 21:47:04,071 INFO L82 GeneralOperation]: Start removeDead. Operand has 225 places, 239 transitions, 494 flow [2022-07-19 21:47:04,081 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 214 places, 228 transitions, 468 flow [2022-07-19 21:47:04,091 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 21:47:04,097 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@27e57749, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@403ae36b [2022-07-19 21:47:04,097 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-07-19 21:47:04,127 INFO L129 PetriNetUnfolder]: 18/199 cut-off events. [2022-07-19 21:47:04,129 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-07-19 21:47:04,129 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:47:04,130 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] [2022-07-19 21:47:04,131 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:47:04,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:47:04,135 INFO L85 PathProgramCache]: Analyzing trace with hash -1523200551, now seen corresponding path program 1 times [2022-07-19 21:47:04,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:47:04,141 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [602667724] [2022-07-19 21:47:04,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:47:04,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:47:04,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:47:04,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:47:04,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:47:04,324 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [602667724] [2022-07-19 21:47:04,324 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [602667724] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:47:04,325 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:47:04,325 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-19 21:47:04,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176348917] [2022-07-19 21:47:04,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:47:04,333 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-19 21:47:04,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:47:04,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-19 21:47:04,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-19 21:47:04,365 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 219 out of 239 [2022-07-19 21:47:04,372 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 228 transitions, 468 flow. Second operand has 2 states, 2 states have (on average 221.5) internal successors, (443), 2 states have internal predecessors, (443), 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) [2022-07-19 21:47:04,373 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:47:04,373 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 219 of 239 [2022-07-19 21:47:04,374 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:47:04,432 INFO L129 PetriNetUnfolder]: 6/213 cut-off events. [2022-07-19 21:47:04,433 INFO L130 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2022-07-19 21:47:04,435 INFO L84 FinitePrefix]: Finished finitePrefix Result has 227 conditions, 213 events. 6/213 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 379 event pairs, 0 based on Foata normal form. 18/213 useless extension candidates. Maximal degree in co-relation 132. Up to 5 conditions per place. [2022-07-19 21:47:04,437 INFO L132 encePairwiseOnDemand]: 224/239 looper letters, 4 selfloop transitions, 0 changer transitions 4/213 dead transitions. [2022-07-19 21:47:04,437 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 213 transitions, 446 flow [2022-07-19 21:47:04,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-19 21:47:04,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-07-19 21:47:04,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 457 transitions. [2022-07-19 21:47:04,450 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9560669456066946 [2022-07-19 21:47:04,451 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 457 transitions. [2022-07-19 21:47:04,451 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 457 transitions. [2022-07-19 21:47:04,454 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:47:04,455 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 457 transitions. [2022-07-19 21:47:04,459 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 228.5) internal successors, (457), 2 states have internal predecessors, (457), 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) [2022-07-19 21:47:04,469 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 239.0) internal successors, (717), 3 states have internal predecessors, (717), 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) [2022-07-19 21:47:04,470 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 239.0) internal successors, (717), 3 states have internal predecessors, (717), 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) [2022-07-19 21:47:04,471 INFO L186 Difference]: Start difference. First operand has 214 places, 228 transitions, 468 flow. Second operand 2 states and 457 transitions. [2022-07-19 21:47:04,472 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 213 transitions, 446 flow [2022-07-19 21:47:04,475 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 213 transitions, 438 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-07-19 21:47:04,478 INFO L242 Difference]: Finished difference. Result has 211 places, 209 transitions, 422 flow [2022-07-19 21:47:04,480 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=239, PETRI_DIFFERENCE_MINUEND_FLOW=430, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=213, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=422, PETRI_PLACES=211, PETRI_TRANSITIONS=209} [2022-07-19 21:47:04,483 INFO L279 CegarLoopForPetriNet]: 214 programPoint places, -3 predicate places. [2022-07-19 21:47:04,483 INFO L495 AbstractCegarLoop]: Abstraction has has 211 places, 209 transitions, 422 flow [2022-07-19 21:47:04,484 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 221.5) internal successors, (443), 2 states have internal predecessors, (443), 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) [2022-07-19 21:47:04,484 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:47:04,484 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] [2022-07-19 21:47:04,484 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-19 21:47:04,485 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:47:04,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:47:04,485 INFO L85 PathProgramCache]: Analyzing trace with hash -1399127304, now seen corresponding path program 1 times [2022-07-19 21:47:04,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:47:04,486 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778470392] [2022-07-19 21:47:04,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:47:04,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:47:04,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:47:04,766 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:47:04,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:47:04,767 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778470392] [2022-07-19 21:47:04,767 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1778470392] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:47:04,767 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:47:04,767 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 21:47:04,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143267702] [2022-07-19 21:47:04,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:47:04,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 21:47:04,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:47:04,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 21:47:04,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-19 21:47:04,774 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 192 out of 239 [2022-07-19 21:47:04,775 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 209 transitions, 422 flow. Second operand has 4 states, 4 states have (on average 195.0) internal successors, (780), 4 states have internal predecessors, (780), 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) [2022-07-19 21:47:04,775 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:47:04,775 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 192 of 239 [2022-07-19 21:47:04,775 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:47:04,919 INFO L129 PetriNetUnfolder]: 161/779 cut-off events. [2022-07-19 21:47:04,919 INFO L130 PetriNetUnfolder]: For 29/29 co-relation queries the response was YES. [2022-07-19 21:47:04,921 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1055 conditions, 779 events. 161/779 cut-off events. For 29/29 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 3609 event pairs, 65 based on Foata normal form. 0/659 useless extension candidates. Maximal degree in co-relation 1052. Up to 216 conditions per place. [2022-07-19 21:47:04,923 INFO L132 encePairwiseOnDemand]: 234/239 looper letters, 40 selfloop transitions, 4 changer transitions 0/222 dead transitions. [2022-07-19 21:47:04,923 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 222 transitions, 538 flow [2022-07-19 21:47:04,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 21:47:04,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-07-19 21:47:04,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 813 transitions. [2022-07-19 21:47:04,925 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.850418410041841 [2022-07-19 21:47:04,925 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 813 transitions. [2022-07-19 21:47:04,925 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 813 transitions. [2022-07-19 21:47:04,926 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:47:04,926 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 813 transitions. [2022-07-19 21:47:04,927 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 203.25) internal successors, (813), 4 states have internal predecessors, (813), 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) [2022-07-19 21:47:04,930 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 239.0) internal successors, (1195), 5 states have internal predecessors, (1195), 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) [2022-07-19 21:47:04,930 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 239.0) internal successors, (1195), 5 states have internal predecessors, (1195), 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) [2022-07-19 21:47:04,930 INFO L186 Difference]: Start difference. First operand has 211 places, 209 transitions, 422 flow. Second operand 4 states and 813 transitions. [2022-07-19 21:47:04,931 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 222 transitions, 538 flow [2022-07-19 21:47:04,933 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 222 transitions, 538 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-07-19 21:47:04,938 INFO L242 Difference]: Finished difference. Result has 212 places, 212 transitions, 449 flow [2022-07-19 21:47:04,939 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=239, PETRI_DIFFERENCE_MINUEND_FLOW=422, PETRI_DIFFERENCE_MINUEND_PLACES=207, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=209, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=205, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=449, PETRI_PLACES=212, PETRI_TRANSITIONS=212} [2022-07-19 21:47:04,939 INFO L279 CegarLoopForPetriNet]: 214 programPoint places, -2 predicate places. [2022-07-19 21:47:04,939 INFO L495 AbstractCegarLoop]: Abstraction has has 212 places, 212 transitions, 449 flow [2022-07-19 21:47:04,940 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 195.0) internal successors, (780), 4 states have internal predecessors, (780), 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) [2022-07-19 21:47:04,940 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:47:04,941 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] [2022-07-19 21:47:04,941 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-19 21:47:04,941 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:47:04,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:47:04,942 INFO L85 PathProgramCache]: Analyzing trace with hash -1910315874, now seen corresponding path program 1 times [2022-07-19 21:47:04,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:47:04,943 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571197889] [2022-07-19 21:47:04,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:47:04,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:47:05,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:47:05,172 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:47:05,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:47:05,173 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [571197889] [2022-07-19 21:47:05,173 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [571197889] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:47:05,173 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:47:05,173 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 21:47:05,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421148286] [2022-07-19 21:47:05,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:47:05,174 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 21:47:05,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:47:05,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 21:47:05,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-19 21:47:05,176 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 189 out of 239 [2022-07-19 21:47:05,177 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 212 transitions, 449 flow. Second operand has 5 states, 5 states have (on average 192.0) internal successors, (960), 5 states have internal predecessors, (960), 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) [2022-07-19 21:47:05,177 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:47:05,177 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 189 of 239 [2022-07-19 21:47:05,177 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:47:05,555 INFO L129 PetriNetUnfolder]: 365/1840 cut-off events. [2022-07-19 21:47:05,555 INFO L130 PetriNetUnfolder]: For 118/129 co-relation queries the response was YES. [2022-07-19 21:47:05,559 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2656 conditions, 1840 events. 365/1840 cut-off events. For 118/129 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 13086 event pairs, 165 based on Foata normal form. 3/1651 useless extension candidates. Maximal degree in co-relation 2650. Up to 362 conditions per place. [2022-07-19 21:47:05,566 INFO L132 encePairwiseOnDemand]: 231/239 looper letters, 94 selfloop transitions, 7 changer transitions 0/276 dead transitions. [2022-07-19 21:47:05,566 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 276 transitions, 829 flow [2022-07-19 21:47:05,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-19 21:47:05,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-07-19 21:47:05,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1227 transitions. [2022-07-19 21:47:05,569 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8556485355648535 [2022-07-19 21:47:05,570 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1227 transitions. [2022-07-19 21:47:05,570 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1227 transitions. [2022-07-19 21:47:05,570 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:47:05,571 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1227 transitions. [2022-07-19 21:47:05,573 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 204.5) internal successors, (1227), 6 states have internal predecessors, (1227), 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) [2022-07-19 21:47:05,575 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 239.0) internal successors, (1673), 7 states have internal predecessors, (1673), 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) [2022-07-19 21:47:05,576 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 239.0) internal successors, (1673), 7 states have internal predecessors, (1673), 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) [2022-07-19 21:47:05,576 INFO L186 Difference]: Start difference. First operand has 212 places, 212 transitions, 449 flow. Second operand 6 states and 1227 transitions. [2022-07-19 21:47:05,576 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 276 transitions, 829 flow [2022-07-19 21:47:05,580 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 276 transitions, 819 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-07-19 21:47:05,583 INFO L242 Difference]: Finished difference. Result has 219 places, 216 transitions, 490 flow [2022-07-19 21:47:05,583 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=239, PETRI_DIFFERENCE_MINUEND_FLOW=446, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=212, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=205, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=490, PETRI_PLACES=219, PETRI_TRANSITIONS=216} [2022-07-19 21:47:05,585 INFO L279 CegarLoopForPetriNet]: 214 programPoint places, 5 predicate places. [2022-07-19 21:47:05,585 INFO L495 AbstractCegarLoop]: Abstraction has has 219 places, 216 transitions, 490 flow [2022-07-19 21:47:05,586 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 192.0) internal successors, (960), 5 states have internal predecessors, (960), 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) [2022-07-19 21:47:05,586 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:47:05,586 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] [2022-07-19 21:47:05,586 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-19 21:47:05,586 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:47:05,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:47:05,587 INFO L85 PathProgramCache]: Analyzing trace with hash 1819236154, now seen corresponding path program 2 times [2022-07-19 21:47:05,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:47:05,587 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313140465] [2022-07-19 21:47:05,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:47:05,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:47:05,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:47:05,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:47:05,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:47:05,709 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [313140465] [2022-07-19 21:47:05,709 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [313140465] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:47:05,709 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:47:05,710 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-19 21:47:05,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025569145] [2022-07-19 21:47:05,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:47:05,711 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 21:47:05,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:47:05,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 21:47:05,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-19 21:47:05,715 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 191 out of 239 [2022-07-19 21:47:05,716 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 216 transitions, 490 flow. Second operand has 6 states, 6 states have (on average 193.5) internal successors, (1161), 6 states have internal predecessors, (1161), 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) [2022-07-19 21:47:05,716 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:47:05,716 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 191 of 239 [2022-07-19 21:47:05,716 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:47:05,922 INFO L129 PetriNetUnfolder]: 222/1269 cut-off events. [2022-07-19 21:47:05,922 INFO L130 PetriNetUnfolder]: For 307/362 co-relation queries the response was YES. [2022-07-19 21:47:05,926 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1917 conditions, 1269 events. 222/1269 cut-off events. For 307/362 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 8764 event pairs, 104 based on Foata normal form. 55/1230 useless extension candidates. Maximal degree in co-relation 1908. Up to 296 conditions per place. [2022-07-19 21:47:05,929 INFO L132 encePairwiseOnDemand]: 230/239 looper letters, 54 selfloop transitions, 10 changer transitions 0/242 dead transitions. [2022-07-19 21:47:05,929 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 242 transitions, 705 flow [2022-07-19 21:47:05,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-19 21:47:05,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-07-19 21:47:05,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1394 transitions. [2022-07-19 21:47:05,932 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8332337118947998 [2022-07-19 21:47:05,932 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1394 transitions. [2022-07-19 21:47:05,932 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1394 transitions. [2022-07-19 21:47:05,933 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:47:05,933 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1394 transitions. [2022-07-19 21:47:05,935 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 199.14285714285714) internal successors, (1394), 7 states have internal predecessors, (1394), 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) [2022-07-19 21:47:05,940 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 239.0) internal successors, (1912), 8 states have internal predecessors, (1912), 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) [2022-07-19 21:47:05,941 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 239.0) internal successors, (1912), 8 states have internal predecessors, (1912), 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) [2022-07-19 21:47:05,941 INFO L186 Difference]: Start difference. First operand has 219 places, 216 transitions, 490 flow. Second operand 7 states and 1394 transitions. [2022-07-19 21:47:05,941 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 242 transitions, 705 flow [2022-07-19 21:47:05,943 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 223 places, 242 transitions, 699 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-07-19 21:47:05,946 INFO L242 Difference]: Finished difference. Result has 227 places, 219 transitions, 531 flow [2022-07-19 21:47:05,946 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=239, PETRI_DIFFERENCE_MINUEND_FLOW=484, PETRI_DIFFERENCE_MINUEND_PLACES=217, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=216, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=206, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=531, PETRI_PLACES=227, PETRI_TRANSITIONS=219} [2022-07-19 21:47:05,947 INFO L279 CegarLoopForPetriNet]: 214 programPoint places, 13 predicate places. [2022-07-19 21:47:05,947 INFO L495 AbstractCegarLoop]: Abstraction has has 227 places, 219 transitions, 531 flow [2022-07-19 21:47:05,948 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 193.5) internal successors, (1161), 6 states have internal predecessors, (1161), 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) [2022-07-19 21:47:05,950 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:47:05,950 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] [2022-07-19 21:47:05,950 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-19 21:47:05,950 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:47:05,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:47:05,951 INFO L85 PathProgramCache]: Analyzing trace with hash -445000328, now seen corresponding path program 1 times [2022-07-19 21:47:05,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:47:05,952 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814002073] [2022-07-19 21:47:05,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:47:05,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:47:06,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:47:06,125 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:47:06,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:47:06,126 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814002073] [2022-07-19 21:47:06,126 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1814002073] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:47:06,126 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:47:06,127 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-19 21:47:06,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013262135] [2022-07-19 21:47:06,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:47:06,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 21:47:06,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:47:06,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 21:47:06,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-07-19 21:47:06,129 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 189 out of 239 [2022-07-19 21:47:06,130 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 219 transitions, 531 flow. Second operand has 6 states, 6 states have (on average 191.83333333333334) internal successors, (1151), 6 states have internal predecessors, (1151), 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) [2022-07-19 21:47:06,130 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:47:06,130 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 189 of 239 [2022-07-19 21:47:06,130 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:47:06,414 INFO L129 PetriNetUnfolder]: 498/2523 cut-off events. [2022-07-19 21:47:06,414 INFO L130 PetriNetUnfolder]: For 709/709 co-relation queries the response was YES. [2022-07-19 21:47:06,418 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4073 conditions, 2523 events. 498/2523 cut-off events. For 709/709 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 19587 event pairs, 212 based on Foata normal form. 11/2359 useless extension candidates. Maximal degree in co-relation 4061. Up to 532 conditions per place. [2022-07-19 21:47:06,424 INFO L132 encePairwiseOnDemand]: 232/239 looper letters, 82 selfloop transitions, 11 changer transitions 0/269 dead transitions. [2022-07-19 21:47:06,424 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 233 places, 269 transitions, 879 flow [2022-07-19 21:47:06,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-19 21:47:06,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-07-19 21:47:06,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1408 transitions. [2022-07-19 21:47:06,427 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8416019127316199 [2022-07-19 21:47:06,427 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1408 transitions. [2022-07-19 21:47:06,427 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1408 transitions. [2022-07-19 21:47:06,428 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:47:06,428 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1408 transitions. [2022-07-19 21:47:06,430 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 201.14285714285714) internal successors, (1408), 7 states have internal predecessors, (1408), 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) [2022-07-19 21:47:06,431 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 239.0) internal successors, (1912), 8 states have internal predecessors, (1912), 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) [2022-07-19 21:47:06,432 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 239.0) internal successors, (1912), 8 states have internal predecessors, (1912), 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) [2022-07-19 21:47:06,432 INFO L186 Difference]: Start difference. First operand has 227 places, 219 transitions, 531 flow. Second operand 7 states and 1408 transitions. [2022-07-19 21:47:06,432 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 233 places, 269 transitions, 879 flow [2022-07-19 21:47:06,435 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 269 transitions, 866 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-07-19 21:47:06,438 INFO L242 Difference]: Finished difference. Result has 234 places, 224 transitions, 590 flow [2022-07-19 21:47:06,439 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=239, PETRI_DIFFERENCE_MINUEND_FLOW=521, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=219, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=590, PETRI_PLACES=234, PETRI_TRANSITIONS=224} [2022-07-19 21:47:06,440 INFO L279 CegarLoopForPetriNet]: 214 programPoint places, 20 predicate places. [2022-07-19 21:47:06,440 INFO L495 AbstractCegarLoop]: Abstraction has has 234 places, 224 transitions, 590 flow [2022-07-19 21:47:06,441 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 191.83333333333334) internal successors, (1151), 6 states have internal predecessors, (1151), 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) [2022-07-19 21:47:06,441 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:47:06,441 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] [2022-07-19 21:47:06,441 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-19 21:47:06,441 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:47:06,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:47:06,442 INFO L85 PathProgramCache]: Analyzing trace with hash -1946681628, now seen corresponding path program 2 times [2022-07-19 21:47:06,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:47:06,443 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1892330887] [2022-07-19 21:47:06,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:47:06,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:47:06,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:47:06,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:47:06,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:47:06,565 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1892330887] [2022-07-19 21:47:06,566 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1892330887] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:47:06,566 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:47:06,566 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 21:47:06,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202421425] [2022-07-19 21:47:06,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:47:06,566 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 21:47:06,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:47:06,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 21:47:06,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-19 21:47:06,568 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 189 out of 239 [2022-07-19 21:47:06,569 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 224 transitions, 590 flow. Second operand has 5 states, 5 states have (on average 192.4) internal successors, (962), 5 states have internal predecessors, (962), 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) [2022-07-19 21:47:06,569 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:47:06,569 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 189 of 239 [2022-07-19 21:47:06,569 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:47:06,867 INFO L129 PetriNetUnfolder]: 531/2677 cut-off events. [2022-07-19 21:47:06,868 INFO L130 PetriNetUnfolder]: For 1693/1703 co-relation queries the response was YES. [2022-07-19 21:47:06,907 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4663 conditions, 2677 events. 531/2677 cut-off events. For 1693/1703 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 21149 event pairs, 297 based on Foata normal form. 4/2488 useless extension candidates. Maximal degree in co-relation 4646. Up to 477 conditions per place. [2022-07-19 21:47:06,913 INFO L132 encePairwiseOnDemand]: 232/239 looper letters, 85 selfloop transitions, 15 changer transitions 0/276 dead transitions. [2022-07-19 21:47:06,913 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 238 places, 276 transitions, 1018 flow [2022-07-19 21:47:06,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 21:47:06,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-07-19 21:47:06,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1029 transitions. [2022-07-19 21:47:06,916 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8610878661087866 [2022-07-19 21:47:06,916 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1029 transitions. [2022-07-19 21:47:06,916 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1029 transitions. [2022-07-19 21:47:06,916 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:47:06,916 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1029 transitions. [2022-07-19 21:47:06,918 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 205.8) internal successors, (1029), 5 states have internal predecessors, (1029), 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) [2022-07-19 21:47:06,919 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 239.0) internal successors, (1434), 6 states have internal predecessors, (1434), 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) [2022-07-19 21:47:06,921 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 239.0) internal successors, (1434), 6 states have internal predecessors, (1434), 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) [2022-07-19 21:47:06,921 INFO L186 Difference]: Start difference. First operand has 234 places, 224 transitions, 590 flow. Second operand 5 states and 1029 transitions. [2022-07-19 21:47:06,921 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 238 places, 276 transitions, 1018 flow [2022-07-19 21:47:06,925 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 236 places, 276 transitions, 999 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-07-19 21:47:06,928 INFO L242 Difference]: Finished difference. Result has 239 places, 231 transitions, 710 flow [2022-07-19 21:47:06,928 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=239, PETRI_DIFFERENCE_MINUEND_FLOW=581, PETRI_DIFFERENCE_MINUEND_PLACES=232, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=224, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=212, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=710, PETRI_PLACES=239, PETRI_TRANSITIONS=231} [2022-07-19 21:47:06,930 INFO L279 CegarLoopForPetriNet]: 214 programPoint places, 25 predicate places. [2022-07-19 21:47:06,930 INFO L495 AbstractCegarLoop]: Abstraction has has 239 places, 231 transitions, 710 flow [2022-07-19 21:47:06,930 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 192.4) internal successors, (962), 5 states have internal predecessors, (962), 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) [2022-07-19 21:47:06,930 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:47:06,931 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] [2022-07-19 21:47:06,931 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-19 21:47:06,931 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:47:06,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:47:06,931 INFO L85 PathProgramCache]: Analyzing trace with hash 48186288, now seen corresponding path program 3 times [2022-07-19 21:47:06,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:47:06,932 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1565573950] [2022-07-19 21:47:06,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:47:06,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:47:06,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:47:07,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:47:07,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:47:07,100 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1565573950] [2022-07-19 21:47:07,100 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1565573950] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:47:07,100 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:47:07,100 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-19 21:47:07,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788671974] [2022-07-19 21:47:07,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:47:07,101 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 21:47:07,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:47:07,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 21:47:07,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-07-19 21:47:07,102 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 189 out of 239 [2022-07-19 21:47:07,103 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 239 places, 231 transitions, 710 flow. Second operand has 6 states, 6 states have (on average 191.83333333333334) internal successors, (1151), 6 states have internal predecessors, (1151), 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) [2022-07-19 21:47:07,103 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:47:07,103 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 189 of 239 [2022-07-19 21:47:07,103 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:47:07,486 INFO L129 PetriNetUnfolder]: 549/2783 cut-off events. [2022-07-19 21:47:07,487 INFO L130 PetriNetUnfolder]: For 2799/2808 co-relation queries the response was YES. [2022-07-19 21:47:07,493 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5092 conditions, 2783 events. 549/2783 cut-off events. For 2799/2808 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 22323 event pairs, 303 based on Foata normal form. 12/2596 useless extension candidates. Maximal degree in co-relation 5072. Up to 485 conditions per place. [2022-07-19 21:47:07,501 INFO L132 encePairwiseOnDemand]: 232/239 looper letters, 91 selfloop transitions, 16 changer transitions 0/283 dead transitions. [2022-07-19 21:47:07,502 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 244 places, 283 transitions, 1113 flow [2022-07-19 21:47:07,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-19 21:47:07,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-07-19 21:47:07,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1225 transitions. [2022-07-19 21:47:07,504 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8542538354253836 [2022-07-19 21:47:07,504 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1225 transitions. [2022-07-19 21:47:07,505 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1225 transitions. [2022-07-19 21:47:07,505 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:47:07,505 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1225 transitions. [2022-07-19 21:47:07,507 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 204.16666666666666) internal successors, (1225), 6 states have internal predecessors, (1225), 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) [2022-07-19 21:47:07,509 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 239.0) internal successors, (1673), 7 states have internal predecessors, (1673), 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) [2022-07-19 21:47:07,509 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 239.0) internal successors, (1673), 7 states have internal predecessors, (1673), 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) [2022-07-19 21:47:07,510 INFO L186 Difference]: Start difference. First operand has 239 places, 231 transitions, 710 flow. Second operand 6 states and 1225 transitions. [2022-07-19 21:47:07,510 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 244 places, 283 transitions, 1113 flow [2022-07-19 21:47:07,516 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 243 places, 283 transitions, 1086 flow, removed 9 selfloop flow, removed 1 redundant places. [2022-07-19 21:47:07,519 INFO L242 Difference]: Finished difference. Result has 246 places, 233 transitions, 756 flow [2022-07-19 21:47:07,520 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=239, PETRI_DIFFERENCE_MINUEND_FLOW=677, PETRI_DIFFERENCE_MINUEND_PLACES=238, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=230, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=216, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=756, PETRI_PLACES=246, PETRI_TRANSITIONS=233} [2022-07-19 21:47:07,521 INFO L279 CegarLoopForPetriNet]: 214 programPoint places, 32 predicate places. [2022-07-19 21:47:07,521 INFO L495 AbstractCegarLoop]: Abstraction has has 246 places, 233 transitions, 756 flow [2022-07-19 21:47:07,521 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 191.83333333333334) internal successors, (1151), 6 states have internal predecessors, (1151), 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) [2022-07-19 21:47:07,521 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:47:07,522 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] [2022-07-19 21:47:07,522 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-19 21:47:07,522 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:47:07,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:47:07,522 INFO L85 PathProgramCache]: Analyzing trace with hash 741252792, now seen corresponding path program 4 times [2022-07-19 21:47:07,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:47:07,523 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [410549127] [2022-07-19 21:47:07,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:47:07,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:47:07,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:47:07,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:47:07,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:47:07,654 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [410549127] [2022-07-19 21:47:07,654 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [410549127] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:47:07,654 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:47:07,654 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 21:47:07,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186450116] [2022-07-19 21:47:07,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:47:07,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 21:47:07,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:47:07,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 21:47:07,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-19 21:47:07,656 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 189 out of 239 [2022-07-19 21:47:07,657 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 246 places, 233 transitions, 756 flow. Second operand has 5 states, 5 states have (on average 192.4) internal successors, (962), 5 states have internal predecessors, (962), 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) [2022-07-19 21:47:07,657 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:47:07,657 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 189 of 239 [2022-07-19 21:47:07,657 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:47:07,999 INFO L129 PetriNetUnfolder]: 547/2767 cut-off events. [2022-07-19 21:47:07,999 INFO L130 PetriNetUnfolder]: For 3200/3203 co-relation queries the response was YES. [2022-07-19 21:47:08,006 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5163 conditions, 2767 events. 547/2767 cut-off events. For 3200/3203 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 22021 event pairs, 304 based on Foata normal form. 5/2565 useless extension candidates. Maximal degree in co-relation 5140. Up to 811 conditions per place. [2022-07-19 21:47:08,017 INFO L132 encePairwiseOnDemand]: 232/239 looper letters, 65 selfloop transitions, 19 changer transitions 0/260 dead transitions. [2022-07-19 21:47:08,017 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 250 places, 260 transitions, 1075 flow [2022-07-19 21:47:08,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 21:47:08,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-07-19 21:47:08,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1011 transitions. [2022-07-19 21:47:08,019 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8460251046025105 [2022-07-19 21:47:08,019 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1011 transitions. [2022-07-19 21:47:08,019 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1011 transitions. [2022-07-19 21:47:08,020 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:47:08,020 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1011 transitions. [2022-07-19 21:47:08,021 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 202.2) internal successors, (1011), 5 states have internal predecessors, (1011), 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) [2022-07-19 21:47:08,023 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 239.0) internal successors, (1434), 6 states have internal predecessors, (1434), 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) [2022-07-19 21:47:08,023 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 239.0) internal successors, (1434), 6 states have internal predecessors, (1434), 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) [2022-07-19 21:47:08,024 INFO L186 Difference]: Start difference. First operand has 246 places, 233 transitions, 756 flow. Second operand 5 states and 1011 transitions. [2022-07-19 21:47:08,024 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 250 places, 260 transitions, 1075 flow [2022-07-19 21:47:08,030 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 248 places, 260 transitions, 1045 flow, removed 2 selfloop flow, removed 2 redundant places. [2022-07-19 21:47:08,032 INFO L242 Difference]: Finished difference. Result has 251 places, 240 transitions, 882 flow [2022-07-19 21:47:08,033 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=239, PETRI_DIFFERENCE_MINUEND_FLOW=730, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=233, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=218, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=882, PETRI_PLACES=251, PETRI_TRANSITIONS=240} [2022-07-19 21:47:08,035 INFO L279 CegarLoopForPetriNet]: 214 programPoint places, 37 predicate places. [2022-07-19 21:47:08,035 INFO L495 AbstractCegarLoop]: Abstraction has has 251 places, 240 transitions, 882 flow [2022-07-19 21:47:08,035 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 192.4) internal successors, (962), 5 states have internal predecessors, (962), 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) [2022-07-19 21:47:08,035 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:47:08,036 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] [2022-07-19 21:47:08,036 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-19 21:47:08,036 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:47:08,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:47:08,037 INFO L85 PathProgramCache]: Analyzing trace with hash 1633734454, now seen corresponding path program 5 times [2022-07-19 21:47:08,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:47:08,038 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1134446897] [2022-07-19 21:47:08,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:47:08,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:47:08,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:47:08,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:47:08,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:47:08,180 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1134446897] [2022-07-19 21:47:08,180 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1134446897] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:47:08,180 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:47:08,180 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-19 21:47:08,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616295718] [2022-07-19 21:47:08,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:47:08,181 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 21:47:08,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:47:08,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 21:47:08,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-07-19 21:47:08,182 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 189 out of 239 [2022-07-19 21:47:08,183 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 251 places, 240 transitions, 882 flow. Second operand has 6 states, 6 states have (on average 191.83333333333334) internal successors, (1151), 6 states have internal predecessors, (1151), 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) [2022-07-19 21:47:08,184 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:47:08,184 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 189 of 239 [2022-07-19 21:47:08,184 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:47:08,586 INFO L129 PetriNetUnfolder]: 525/2656 cut-off events. [2022-07-19 21:47:08,589 INFO L130 PetriNetUnfolder]: For 3614/3615 co-relation queries the response was YES. [2022-07-19 21:47:08,595 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5003 conditions, 2656 events. 525/2656 cut-off events. For 3614/3615 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 20992 event pairs, 272 based on Foata normal form. 12/2476 useless extension candidates. Maximal degree in co-relation 4977. Up to 738 conditions per place. [2022-07-19 21:47:08,601 INFO L132 encePairwiseOnDemand]: 232/239 looper letters, 74 selfloop transitions, 20 changer transitions 0/270 dead transitions. [2022-07-19 21:47:08,601 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 256 places, 270 transitions, 1171 flow [2022-07-19 21:47:08,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-19 21:47:08,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-07-19 21:47:08,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1211 transitions. [2022-07-19 21:47:08,604 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8444909344490934 [2022-07-19 21:47:08,604 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1211 transitions. [2022-07-19 21:47:08,604 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1211 transitions. [2022-07-19 21:47:08,604 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:47:08,604 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1211 transitions. [2022-07-19 21:47:08,606 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 201.83333333333334) internal successors, (1211), 6 states have internal predecessors, (1211), 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) [2022-07-19 21:47:08,608 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 239.0) internal successors, (1673), 7 states have internal predecessors, (1673), 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) [2022-07-19 21:47:08,608 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 239.0) internal successors, (1673), 7 states have internal predecessors, (1673), 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) [2022-07-19 21:47:08,609 INFO L186 Difference]: Start difference. First operand has 251 places, 240 transitions, 882 flow. Second operand 6 states and 1211 transitions. [2022-07-19 21:47:08,609 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 256 places, 270 transitions, 1171 flow [2022-07-19 21:47:08,615 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 255 places, 270 transitions, 1130 flow, removed 14 selfloop flow, removed 1 redundant places. [2022-07-19 21:47:08,618 INFO L242 Difference]: Finished difference. Result has 258 places, 242 transitions, 930 flow [2022-07-19 21:47:08,618 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=239, PETRI_DIFFERENCE_MINUEND_FLOW=830, PETRI_DIFFERENCE_MINUEND_PLACES=250, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=239, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=220, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=930, PETRI_PLACES=258, PETRI_TRANSITIONS=242} [2022-07-19 21:47:08,619 INFO L279 CegarLoopForPetriNet]: 214 programPoint places, 44 predicate places. [2022-07-19 21:47:08,619 INFO L495 AbstractCegarLoop]: Abstraction has has 258 places, 242 transitions, 930 flow [2022-07-19 21:47:08,620 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 191.83333333333334) internal successors, (1151), 6 states have internal predecessors, (1151), 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) [2022-07-19 21:47:08,620 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:47:08,620 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] [2022-07-19 21:47:08,620 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-19 21:47:08,620 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:47:08,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:47:08,621 INFO L85 PathProgramCache]: Analyzing trace with hash 336008823, now seen corresponding path program 1 times [2022-07-19 21:47:08,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:47:08,621 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1794547311] [2022-07-19 21:47:08,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:47:08,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:47:08,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:47:08,728 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:47:08,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:47:08,729 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1794547311] [2022-07-19 21:47:08,729 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1794547311] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 21:47:08,729 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1289510168] [2022-07-19 21:47:08,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:47:08,729 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 21:47:08,730 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 21:47:08,756 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) [2022-07-19 21:47:08,758 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-19 21:47:08,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:47:08,834 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-19 21:47:08,839 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 21:47:09,026 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-19 21:47:09,026 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 21:47:09,027 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1289510168] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:47:09,027 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 21:47:09,027 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 14 [2022-07-19 21:47:09,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340064621] [2022-07-19 21:47:09,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:47:09,028 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-19 21:47:09,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:47:09,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-19 21:47:09,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-07-19 21:47:09,029 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 168 out of 239 [2022-07-19 21:47:09,030 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 258 places, 242 transitions, 930 flow. Second operand has 8 states, 8 states have (on average 171.0) internal successors, (1368), 8 states have internal predecessors, (1368), 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) [2022-07-19 21:47:09,031 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:47:09,031 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 168 of 239 [2022-07-19 21:47:09,031 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:47:09,425 INFO L129 PetriNetUnfolder]: 369/1908 cut-off events. [2022-07-19 21:47:09,425 INFO L130 PetriNetUnfolder]: For 1440/1451 co-relation queries the response was YES. [2022-07-19 21:47:09,431 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3363 conditions, 1908 events. 369/1908 cut-off events. For 1440/1451 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 15106 event pairs, 207 based on Foata normal form. 1/1779 useless extension candidates. Maximal degree in co-relation 3334. Up to 531 conditions per place. [2022-07-19 21:47:09,435 INFO L132 encePairwiseOnDemand]: 219/239 looper letters, 47 selfloop transitions, 13 changer transitions 18/265 dead transitions. [2022-07-19 21:47:09,435 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 267 places, 265 transitions, 1138 flow [2022-07-19 21:47:09,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-19 21:47:09,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-07-19 21:47:09,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1760 transitions. [2022-07-19 21:47:09,439 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7364016736401674 [2022-07-19 21:47:09,439 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1760 transitions. [2022-07-19 21:47:09,439 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1760 transitions. [2022-07-19 21:47:09,440 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:47:09,440 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1760 transitions. [2022-07-19 21:47:09,442 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 176.0) internal successors, (1760), 10 states have internal predecessors, (1760), 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) [2022-07-19 21:47:09,445 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 239.0) internal successors, (2629), 11 states have internal predecessors, (2629), 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) [2022-07-19 21:47:09,446 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 239.0) internal successors, (2629), 11 states have internal predecessors, (2629), 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) [2022-07-19 21:47:09,446 INFO L186 Difference]: Start difference. First operand has 258 places, 242 transitions, 930 flow. Second operand 10 states and 1760 transitions. [2022-07-19 21:47:09,446 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 267 places, 265 transitions, 1138 flow [2022-07-19 21:47:09,453 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 265 places, 265 transitions, 1093 flow, removed 9 selfloop flow, removed 2 redundant places. [2022-07-19 21:47:09,455 INFO L242 Difference]: Finished difference. Result has 269 places, 243 transitions, 931 flow [2022-07-19 21:47:09,456 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=239, PETRI_DIFFERENCE_MINUEND_FLOW=885, PETRI_DIFFERENCE_MINUEND_PLACES=256, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=242, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=229, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=931, PETRI_PLACES=269, PETRI_TRANSITIONS=243} [2022-07-19 21:47:09,457 INFO L279 CegarLoopForPetriNet]: 214 programPoint places, 55 predicate places. [2022-07-19 21:47:09,457 INFO L495 AbstractCegarLoop]: Abstraction has has 269 places, 243 transitions, 931 flow [2022-07-19 21:47:09,458 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 171.0) internal successors, (1368), 8 states have internal predecessors, (1368), 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) [2022-07-19 21:47:09,458 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:47:09,458 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] [2022-07-19 21:47:09,492 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-07-19 21:47:09,675 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-07-19 21:47:09,675 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:47:09,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:47:09,676 INFO L85 PathProgramCache]: Analyzing trace with hash 406619300, now seen corresponding path program 1 times [2022-07-19 21:47:09,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:47:09,676 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [283302909] [2022-07-19 21:47:09,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:47:09,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:47:09,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:47:09,874 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-19 21:47:09,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:47:09,875 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [283302909] [2022-07-19 21:47:09,875 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [283302909] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 21:47:09,875 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1195445396] [2022-07-19 21:47:09,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:47:09,875 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 21:47:09,875 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 21:47:09,877 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) [2022-07-19 21:47:09,878 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-19 21:47:09,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:47:09,950 INFO L263 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 33 conjunts are in the unsatisfiable core [2022-07-19 21:47:09,953 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 21:47:10,357 INFO L356 Elim1Store]: treesize reduction 9, result has 25.0 percent of original size [2022-07-19 21:47:10,358 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 10 [2022-07-19 21:47:10,425 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:47:10,426 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 21:47:10,753 INFO L356 Elim1Store]: treesize reduction 9, result has 43.8 percent of original size [2022-07-19 21:47:10,754 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 11 [2022-07-19 21:47:11,223 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:47:11,223 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1195445396] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 21:47:11,223 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-19 21:47:11,223 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 18, 18] total 35 [2022-07-19 21:47:11,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405075680] [2022-07-19 21:47:11,223 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-19 21:47:11,224 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-07-19 21:47:11,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:47:11,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-07-19 21:47:11,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=1081, Unknown=0, NotChecked=0, Total=1190 [2022-07-19 21:47:11,227 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 239 [2022-07-19 21:47:11,229 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 269 places, 243 transitions, 931 flow. Second operand has 35 states, 35 states have (on average 96.82857142857142) internal successors, (3389), 35 states have internal predecessors, (3389), 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) [2022-07-19 21:47:11,230 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:47:11,230 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 239 [2022-07-19 21:47:11,230 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:47:27,337 INFO L129 PetriNetUnfolder]: 26272/55706 cut-off events. [2022-07-19 21:47:27,338 INFO L130 PetriNetUnfolder]: For 48678/48708 co-relation queries the response was YES. [2022-07-19 21:47:27,625 INFO L84 FinitePrefix]: Finished finitePrefix Result has 122993 conditions, 55706 events. 26272/55706 cut-off events. For 48678/48708 co-relation queries the response was YES. Maximal size of possible extension queue 937. Compared 576297 event pairs, 1094 based on Foata normal form. 80/54569 useless extension candidates. Maximal degree in co-relation 122960. Up to 8491 conditions per place. [2022-07-19 21:47:27,772 INFO L132 encePairwiseOnDemand]: 163/239 looper letters, 1981 selfloop transitions, 514 changer transitions 398/2975 dead transitions. [2022-07-19 21:47:27,772 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 425 places, 2975 transitions, 16572 flow [2022-07-19 21:47:27,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 160 states. [2022-07-19 21:47:27,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 160 states. [2022-07-19 21:47:27,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 17241 transitions. [2022-07-19 21:47:27,796 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.45086297071129705 [2022-07-19 21:47:27,796 INFO L72 ComplementDD]: Start complementDD. Operand 160 states and 17241 transitions. [2022-07-19 21:47:27,796 INFO L73 IsDeterministic]: Start isDeterministic. Operand 160 states and 17241 transitions. [2022-07-19 21:47:27,803 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:47:27,803 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 160 states and 17241 transitions. [2022-07-19 21:47:27,828 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 161 states, 160 states have (on average 107.75625) internal successors, (17241), 160 states have internal predecessors, (17241), 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) [2022-07-19 21:47:27,865 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 161 states, 161 states have (on average 239.0) internal successors, (38479), 161 states have internal predecessors, (38479), 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) [2022-07-19 21:47:27,873 INFO L81 ComplementDD]: Finished complementDD. Result has 161 states, 161 states have (on average 239.0) internal successors, (38479), 161 states have internal predecessors, (38479), 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) [2022-07-19 21:47:27,873 INFO L186 Difference]: Start difference. First operand has 269 places, 243 transitions, 931 flow. Second operand 160 states and 17241 transitions. [2022-07-19 21:47:27,873 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 425 places, 2975 transitions, 16572 flow [2022-07-19 21:47:28,470 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 418 places, 2975 transitions, 15768 flow, removed 292 selfloop flow, removed 7 redundant places. [2022-07-19 21:47:28,487 INFO L242 Difference]: Finished difference. Result has 527 places, 783 transitions, 5883 flow [2022-07-19 21:47:28,488 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=239, PETRI_DIFFERENCE_MINUEND_FLOW=902, PETRI_DIFFERENCE_MINUEND_PLACES=259, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=243, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=160, PETRI_FLOW=5883, PETRI_PLACES=527, PETRI_TRANSITIONS=783} [2022-07-19 21:47:28,488 INFO L279 CegarLoopForPetriNet]: 214 programPoint places, 313 predicate places. [2022-07-19 21:47:28,488 INFO L495 AbstractCegarLoop]: Abstraction has has 527 places, 783 transitions, 5883 flow [2022-07-19 21:47:28,489 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 96.82857142857142) internal successors, (3389), 35 states have internal predecessors, (3389), 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) [2022-07-19 21:47:28,489 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:47:28,490 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] [2022-07-19 21:47:28,522 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-19 21:47:28,705 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-07-19 21:47:28,706 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:47:28,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:47:28,706 INFO L85 PathProgramCache]: Analyzing trace with hash -617316126, now seen corresponding path program 2 times [2022-07-19 21:47:28,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:47:28,707 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1385634977] [2022-07-19 21:47:28,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:47:28,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:47:28,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:47:28,956 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-19 21:47:28,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:47:28,956 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1385634977] [2022-07-19 21:47:28,956 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1385634977] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 21:47:28,956 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [428120581] [2022-07-19 21:47:28,956 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-19 21:47:28,956 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 21:47:28,956 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 21:47:28,972 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) [2022-07-19 21:47:28,973 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-19 21:47:29,091 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-19 21:47:29,091 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-19 21:47:29,092 INFO L263 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 10 conjunts are in the unsatisfiable core [2022-07-19 21:47:29,095 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 21:47:29,277 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-19 21:47:29,277 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 21:47:29,277 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [428120581] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:47:29,277 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 21:47:29,277 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 14 [2022-07-19 21:47:29,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381069382] [2022-07-19 21:47:29,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:47:29,278 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-19 21:47:29,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:47:29,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-19 21:47:29,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2022-07-19 21:47:29,280 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 191 out of 239 [2022-07-19 21:47:29,280 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 527 places, 783 transitions, 5883 flow. Second operand has 8 states, 8 states have (on average 193.25) internal successors, (1546), 8 states have internal predecessors, (1546), 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) [2022-07-19 21:47:29,280 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:47:29,281 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 191 of 239 [2022-07-19 21:47:29,281 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:47:33,665 INFO L129 PetriNetUnfolder]: 4078/16535 cut-off events. [2022-07-19 21:47:33,666 INFO L130 PetriNetUnfolder]: For 175001/176261 co-relation queries the response was YES. [2022-07-19 21:47:33,983 INFO L84 FinitePrefix]: Finished finitePrefix Result has 68426 conditions, 16535 events. 4078/16535 cut-off events. For 175001/176261 co-relation queries the response was YES. Maximal size of possible extension queue 319. Compared 188245 event pairs, 1363 based on Foata normal form. 292/16094 useless extension candidates. Maximal degree in co-relation 68287. Up to 2391 conditions per place. [2022-07-19 21:47:34,065 INFO L132 encePairwiseOnDemand]: 229/239 looper letters, 106 selfloop transitions, 64 changer transitions 0/839 dead transitions. [2022-07-19 21:47:34,065 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 485 places, 839 transitions, 6693 flow [2022-07-19 21:47:34,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-19 21:47:34,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-07-19 21:47:34,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1788 transitions. [2022-07-19 21:47:34,067 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8312412831241283 [2022-07-19 21:47:34,067 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1788 transitions. [2022-07-19 21:47:34,067 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1788 transitions. [2022-07-19 21:47:34,068 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:47:34,068 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1788 transitions. [2022-07-19 21:47:34,070 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 198.66666666666666) internal successors, (1788), 9 states have internal predecessors, (1788), 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) [2022-07-19 21:47:34,071 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 239.0) internal successors, (2390), 10 states have internal predecessors, (2390), 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) [2022-07-19 21:47:34,072 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 239.0) internal successors, (2390), 10 states have internal predecessors, (2390), 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) [2022-07-19 21:47:34,072 INFO L186 Difference]: Start difference. First operand has 527 places, 783 transitions, 5883 flow. Second operand 9 states and 1788 transitions. [2022-07-19 21:47:34,072 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 485 places, 839 transitions, 6693 flow [2022-07-19 21:47:35,076 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 464 places, 839 transitions, 6303 flow, removed 136 selfloop flow, removed 21 redundant places. [2022-07-19 21:47:35,086 INFO L242 Difference]: Finished difference. Result has 468 places, 787 transitions, 5744 flow [2022-07-19 21:47:35,087 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=239, PETRI_DIFFERENCE_MINUEND_FLOW=5587, PETRI_DIFFERENCE_MINUEND_PLACES=456, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=783, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=719, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5744, PETRI_PLACES=468, PETRI_TRANSITIONS=787} [2022-07-19 21:47:35,087 INFO L279 CegarLoopForPetriNet]: 214 programPoint places, 254 predicate places. [2022-07-19 21:47:35,087 INFO L495 AbstractCegarLoop]: Abstraction has has 468 places, 787 transitions, 5744 flow [2022-07-19 21:47:35,088 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 193.25) internal successors, (1546), 8 states have internal predecessors, (1546), 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) [2022-07-19 21:47:35,088 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:47:35,088 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] [2022-07-19 21:47:35,119 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-07-19 21:47:35,308 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 21:47:35,308 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:47:35,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:47:35,309 INFO L85 PathProgramCache]: Analyzing trace with hash 1590752966, now seen corresponding path program 1 times [2022-07-19 21:47:35,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:47:35,309 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1583178076] [2022-07-19 21:47:35,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:47:35,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:47:35,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:47:35,554 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-19 21:47:35,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:47:35,554 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1583178076] [2022-07-19 21:47:35,555 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1583178076] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 21:47:35,555 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [965093918] [2022-07-19 21:47:35,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:47:35,555 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 21:47:35,555 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 21:47:35,564 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) [2022-07-19 21:47:35,583 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-19 21:47:35,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:47:35,643 INFO L263 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 40 conjunts are in the unsatisfiable core [2022-07-19 21:47:35,648 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 21:47:36,589 INFO L356 Elim1Store]: treesize reduction 9, result has 25.0 percent of original size [2022-07-19 21:47:36,591 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 13 [2022-07-19 21:47:36,702 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:47:36,702 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 21:47:37,216 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-19 21:47:37,216 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 26 [2022-07-19 21:47:38,276 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:47:38,276 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [965093918] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 21:47:38,276 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-19 21:47:38,276 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 21, 22] total 49 [2022-07-19 21:47:38,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148396233] [2022-07-19 21:47:38,276 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-19 21:47:38,277 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2022-07-19 21:47:38,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:47:38,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2022-07-19 21:47:38,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=180, Invalid=2172, Unknown=0, NotChecked=0, Total=2352 [2022-07-19 21:47:38,282 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 239 [2022-07-19 21:47:38,285 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 468 places, 787 transitions, 5744 flow. Second operand has 49 states, 49 states have (on average 93.18367346938776) internal successors, (4566), 49 states have internal predecessors, (4566), 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) [2022-07-19 21:47:38,285 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:47:38,285 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 239 [2022-07-19 21:47:38,285 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:48:01,023 INFO L129 PetriNetUnfolder]: 21383/47488 cut-off events. [2022-07-19 21:48:01,024 INFO L130 PetriNetUnfolder]: For 552627/552904 co-relation queries the response was YES. [2022-07-19 21:48:02,214 INFO L84 FinitePrefix]: Finished finitePrefix Result has 230753 conditions, 47488 events. 21383/47488 cut-off events. For 552627/552904 co-relation queries the response was YES. Maximal size of possible extension queue 793. Compared 497744 event pairs, 2601 based on Foata normal form. 155/46798 useless extension candidates. Maximal degree in co-relation 230625. Up to 18109 conditions per place. [2022-07-19 21:48:02,530 INFO L132 encePairwiseOnDemand]: 172/239 looper letters, 1528 selfloop transitions, 481 changer transitions 4/2118 dead transitions. [2022-07-19 21:48:02,530 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 587 places, 2118 transitions, 21010 flow [2022-07-19 21:48:02,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 120 states. [2022-07-19 21:48:02,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2022-07-19 21:48:02,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 11866 transitions. [2022-07-19 21:48:02,543 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.41373779637377966 [2022-07-19 21:48:02,543 INFO L72 ComplementDD]: Start complementDD. Operand 120 states and 11866 transitions. [2022-07-19 21:48:02,543 INFO L73 IsDeterministic]: Start isDeterministic. Operand 120 states and 11866 transitions. [2022-07-19 21:48:02,545 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:48:02,546 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 120 states and 11866 transitions. [2022-07-19 21:48:02,557 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 121 states, 120 states have (on average 98.88333333333334) internal successors, (11866), 120 states have internal predecessors, (11866), 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) [2022-07-19 21:48:02,575 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 121 states, 121 states have (on average 239.0) internal successors, (28919), 121 states have internal predecessors, (28919), 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) [2022-07-19 21:48:02,578 INFO L81 ComplementDD]: Finished complementDD. Result has 121 states, 121 states have (on average 239.0) internal successors, (28919), 121 states have internal predecessors, (28919), 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) [2022-07-19 21:48:02,578 INFO L186 Difference]: Start difference. First operand has 468 places, 787 transitions, 5744 flow. Second operand 120 states and 11866 transitions. [2022-07-19 21:48:02,578 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 587 places, 2118 transitions, 21010 flow [2022-07-19 21:48:06,924 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 584 places, 2118 transitions, 20873 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-07-19 21:48:06,951 INFO L242 Difference]: Finished difference. Result has 672 places, 1089 transitions, 10025 flow [2022-07-19 21:48:06,953 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=239, PETRI_DIFFERENCE_MINUEND_FLOW=5643, PETRI_DIFFERENCE_MINUEND_PLACES=465, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=787, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=186, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=555, PETRI_DIFFERENCE_SUBTRAHEND_STATES=120, PETRI_FLOW=10025, PETRI_PLACES=672, PETRI_TRANSITIONS=1089} [2022-07-19 21:48:06,954 INFO L279 CegarLoopForPetriNet]: 214 programPoint places, 458 predicate places. [2022-07-19 21:48:06,954 INFO L495 AbstractCegarLoop]: Abstraction has has 672 places, 1089 transitions, 10025 flow [2022-07-19 21:48:06,955 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 93.18367346938776) internal successors, (4566), 49 states have internal predecessors, (4566), 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) [2022-07-19 21:48:06,955 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:48:06,955 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] [2022-07-19 21:48:06,972 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-07-19 21:48:07,169 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 21:48:07,170 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:48:07,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:48:07,171 INFO L85 PathProgramCache]: Analyzing trace with hash 1785264432, now seen corresponding path program 1 times [2022-07-19 21:48:07,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:48:07,171 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1915266571] [2022-07-19 21:48:07,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:48:07,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:48:07,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:48:07,308 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-19 21:48:07,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:48:07,309 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1915266571] [2022-07-19 21:48:07,309 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1915266571] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 21:48:07,309 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2127437844] [2022-07-19 21:48:07,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:48:07,309 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 21:48:07,309 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 21:48:07,321 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) [2022-07-19 21:48:07,368 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-19 21:48:07,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:48:07,436 INFO L263 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 37 conjunts are in the unsatisfiable core [2022-07-19 21:48:07,438 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 21:48:08,016 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-19 21:48:08,018 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-19 21:48:08,018 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 10 [2022-07-19 21:48:08,085 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:48:08,086 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 21:48:08,357 INFO L356 Elim1Store]: treesize reduction 9, result has 43.8 percent of original size [2022-07-19 21:48:08,358 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 11 [2022-07-19 21:48:08,899 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:48:08,900 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2127437844] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 21:48:08,900 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-19 21:48:08,900 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 23, 18] total 41 [2022-07-19 21:48:08,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370292926] [2022-07-19 21:48:08,900 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-19 21:48:08,901 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-07-19 21:48:08,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:48:08,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-07-19 21:48:08,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=158, Invalid=1482, Unknown=0, NotChecked=0, Total=1640 [2022-07-19 21:48:08,905 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 239 [2022-07-19 21:48:08,908 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 672 places, 1089 transitions, 10025 flow. Second operand has 41 states, 41 states have (on average 90.09756097560975) internal successors, (3694), 41 states have internal predecessors, (3694), 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) [2022-07-19 21:48:08,914 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:48:08,915 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 239 [2022-07-19 21:48:08,915 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand