./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/chl-name-comparator-trans.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6c24879c Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/chl-name-comparator-trans.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 7a18ee378e36a8b6ec16846ba26aa7ebab799f55311c04bb5b266d3aa0d0986d --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-12 10:24:22,079 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 10:24:22,081 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 10:24:22,116 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 10:24:22,117 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 10:24:22,124 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 10:24:22,127 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 10:24:22,131 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 10:24:22,136 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 10:24:22,137 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 10:24:22,138 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 10:24:22,139 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 10:24:22,140 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 10:24:22,143 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 10:24:22,145 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 10:24:22,147 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 10:24:22,149 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 10:24:22,154 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 10:24:22,156 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 10:24:22,160 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 10:24:22,161 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 10:24:22,162 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 10:24:22,165 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 10:24:22,166 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 10:24:22,167 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 10:24:22,170 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 10:24:22,172 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 10:24:22,173 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 10:24:22,174 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 10:24:22,174 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 10:24:22,175 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 10:24:22,176 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 10:24:22,177 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 10:24:22,178 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 10:24:22,178 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 10:24:22,179 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 10:24:22,179 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 10:24:22,180 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 10:24:22,180 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 10:24:22,180 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 10:24:22,181 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 10:24:22,183 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 10:24:22,183 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-12 10:24:22,221 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 10:24:22,222 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 10:24:22,222 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 10:24:22,222 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 10:24:22,223 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 10:24:22,223 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 10:24:22,224 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 10:24:22,224 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 10:24:22,224 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 10:24:22,225 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 10:24:22,226 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-12 10:24:22,226 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-12 10:24:22,226 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-12 10:24:22,226 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 10:24:22,226 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-12 10:24:22,227 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 10:24:22,227 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-12 10:24:22,227 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-12 10:24:22,227 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-12 10:24:22,227 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 10:24:22,228 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-12 10:24:22,228 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 10:24:22,228 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 10:24:22,228 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 10:24:22,228 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 10:24:22,229 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 10:24:22,229 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 10:24:22,229 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-12 10:24:22,229 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-12 10:24:22,229 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-12 10:24:22,230 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-12 10:24:22,230 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-12 10:24:22,230 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-12 10:24:22,230 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7a18ee378e36a8b6ec16846ba26aa7ebab799f55311c04bb5b266d3aa0d0986d [2022-07-12 10:24:22,436 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 10:24:22,460 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 10:24:22,463 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 10:24:22,464 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 10:24:22,465 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 10:24:22,466 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/chl-name-comparator-trans.wvr.c [2022-07-12 10:24:22,517 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1f264b63d/559a5804b92b4aa38461399bf0f707d9/FLAG7226e984f [2022-07-12 10:24:22,943 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 10:24:22,944 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-name-comparator-trans.wvr.c [2022-07-12 10:24:22,955 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1f264b63d/559a5804b92b4aa38461399bf0f707d9/FLAG7226e984f [2022-07-12 10:24:23,326 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1f264b63d/559a5804b92b4aa38461399bf0f707d9 [2022-07-12 10:24:23,331 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 10:24:23,334 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 10:24:23,337 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 10:24:23,337 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 10:24:23,340 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 10:24:23,340 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 10:24:23" (1/1) ... [2022-07-12 10:24:23,341 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7606950e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:24:23, skipping insertion in model container [2022-07-12 10:24:23,341 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 10:24:23" (1/1) ... [2022-07-12 10:24:23,347 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 10:24:23,378 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 10:24:23,585 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-name-comparator-trans.wvr.c[4788,4801] [2022-07-12 10:24:23,591 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 10:24:23,598 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 10:24:23,627 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-name-comparator-trans.wvr.c[4788,4801] [2022-07-12 10:24:23,634 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 10:24:23,646 INFO L208 MainTranslator]: Completed translation [2022-07-12 10:24:23,647 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:24:23 WrapperNode [2022-07-12 10:24:23,647 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-12 10:24:23,648 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-12 10:24:23,648 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-12 10:24:23,649 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-12 10:24:23,654 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:24:23" (1/1) ... [2022-07-12 10:24:23,662 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:24:23" (1/1) ... [2022-07-12 10:24:23,693 INFO L137 Inliner]: procedures = 26, calls = 44, calls flagged for inlining = 17, calls inlined = 21, statements flattened = 369 [2022-07-12 10:24:23,694 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-12 10:24:23,695 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-12 10:24:23,695 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-12 10:24:23,695 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-12 10:24:23,702 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:24:23" (1/1) ... [2022-07-12 10:24:23,702 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:24:23" (1/1) ... [2022-07-12 10:24:23,707 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:24:23" (1/1) ... [2022-07-12 10:24:23,707 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:24:23" (1/1) ... [2022-07-12 10:24:23,716 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:24:23" (1/1) ... [2022-07-12 10:24:23,721 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:24:23" (1/1) ... [2022-07-12 10:24:23,723 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:24:23" (1/1) ... [2022-07-12 10:24:23,726 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-12 10:24:23,727 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-12 10:24:23,728 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-12 10:24:23,728 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-12 10:24:23,729 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:24:23" (1/1) ... [2022-07-12 10:24:23,740 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 10:24:23,751 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:24:23,768 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) [2022-07-12 10:24:23,781 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 [2022-07-12 10:24:23,803 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-12 10:24:23,803 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-12 10:24:23,803 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-12 10:24:23,804 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-12 10:24:23,804 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-07-12 10:24:23,804 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-07-12 10:24:23,804 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-07-12 10:24:23,804 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-07-12 10:24:23,804 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-07-12 10:24:23,805 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-07-12 10:24:23,805 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-12 10:24:23,805 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-12 10:24:23,805 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-12 10:24:23,805 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-12 10:24:23,805 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-12 10:24:23,807 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-07-12 10:24:23,891 INFO L234 CfgBuilder]: Building ICFG [2022-07-12 10:24:23,909 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-12 10:24:24,334 INFO L275 CfgBuilder]: Performing block encoding [2022-07-12 10:24:24,345 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-12 10:24:24,346 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2022-07-12 10:24:24,348 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 10:24:24 BoogieIcfgContainer [2022-07-12 10:24:24,348 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-12 10:24:24,349 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-12 10:24:24,349 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-12 10:24:24,355 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-12 10:24:24,356 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.07 10:24:23" (1/3) ... [2022-07-12 10:24:24,356 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c704dee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 10:24:24, skipping insertion in model container [2022-07-12 10:24:24,356 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:24:23" (2/3) ... [2022-07-12 10:24:24,357 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c704dee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 10:24:24, skipping insertion in model container [2022-07-12 10:24:24,357 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 10:24:24" (3/3) ... [2022-07-12 10:24:24,358 INFO L111 eAbstractionObserver]: Analyzing ICFG chl-name-comparator-trans.wvr.c [2022-07-12 10:24:24,362 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-12 10:24:24,370 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-12 10:24:24,370 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-12 10:24:24,371 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-12 10:24:24,475 INFO L135 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-07-12 10:24:24,528 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 431 places, 465 transitions, 954 flow [2022-07-12 10:24:24,677 INFO L129 PetriNetUnfolder]: 44/462 cut-off events. [2022-07-12 10:24:24,677 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-07-12 10:24:24,688 INFO L84 FinitePrefix]: Finished finitePrefix Result has 475 conditions, 462 events. 44/462 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1299 event pairs, 0 based on Foata normal form. 0/417 useless extension candidates. Maximal degree in co-relation 334. Up to 2 conditions per place. [2022-07-12 10:24:24,689 INFO L82 GeneralOperation]: Start removeDead. Operand has 431 places, 465 transitions, 954 flow [2022-07-12 10:24:24,698 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 417 places, 451 transitions, 920 flow [2022-07-12 10:24:24,706 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 10:24:24,712 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@22e4538a, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@210ef981 [2022-07-12 10:24:24,713 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-07-12 10:24:24,810 INFO L129 PetriNetUnfolder]: 44/450 cut-off events. [2022-07-12 10:24:24,811 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-07-12 10:24:24,811 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:24:24,812 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:24:24,813 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-12 10:24:24,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:24:24,818 INFO L85 PathProgramCache]: Analyzing trace with hash -34176344, now seen corresponding path program 1 times [2022-07-12 10:24:24,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:24:24,827 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302397447] [2022-07-12 10:24:24,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:24:24,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:24:25,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:24:25,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:24:25,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:24:25,130 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302397447] [2022-07-12 10:24:25,130 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1302397447] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:24:25,130 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:24:25,131 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-12 10:24:25,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887461533] [2022-07-12 10:24:25,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:24:25,140 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-12 10:24:25,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:24:25,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-12 10:24:25,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-12 10:24:25,179 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 439 out of 465 [2022-07-12 10:24:25,187 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 417 places, 451 transitions, 920 flow. Second operand has 2 states, 2 states have (on average 444.0) internal successors, (888), 2 states have internal predecessors, (888), 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) [2022-07-12 10:24:25,188 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:24:25,188 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 439 of 465 [2022-07-12 10:24:25,189 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:24:25,306 INFO L129 PetriNetUnfolder]: 25/432 cut-off events. [2022-07-12 10:24:25,306 INFO L130 PetriNetUnfolder]: For 12/14 co-relation queries the response was YES. [2022-07-12 10:24:25,313 INFO L84 FinitePrefix]: Finished finitePrefix Result has 452 conditions, 432 events. 25/432 cut-off events. For 12/14 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1278 event pairs, 0 based on Foata normal form. 32/424 useless extension candidates. Maximal degree in co-relation 323. Up to 7 conditions per place. [2022-07-12 10:24:25,317 INFO L132 encePairwiseOnDemand]: 446/465 looper letters, 6 selfloop transitions, 0 changer transitions 3/432 dead transitions. [2022-07-12 10:24:25,318 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 418 places, 432 transitions, 894 flow [2022-07-12 10:24:25,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-12 10:24:25,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-07-12 10:24:25,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 903 transitions. [2022-07-12 10:24:25,340 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9709677419354839 [2022-07-12 10:24:25,341 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 903 transitions. [2022-07-12 10:24:25,341 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 903 transitions. [2022-07-12 10:24:25,345 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:24:25,347 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 903 transitions. [2022-07-12 10:24:25,353 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 451.5) internal successors, (903), 2 states have internal predecessors, (903), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:25,362 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 465.0) internal successors, (1395), 3 states have internal predecessors, (1395), 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) [2022-07-12 10:24:25,363 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 465.0) internal successors, (1395), 3 states have internal predecessors, (1395), 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) [2022-07-12 10:24:25,365 INFO L186 Difference]: Start difference. First operand has 417 places, 451 transitions, 920 flow. Second operand 2 states and 903 transitions. [2022-07-12 10:24:25,366 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 418 places, 432 transitions, 894 flow [2022-07-12 10:24:25,373 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 412 places, 432 transitions, 882 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-07-12 10:24:25,385 INFO L242 Difference]: Finished difference. Result has 412 places, 429 transitions, 864 flow [2022-07-12 10:24:25,387 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=465, PETRI_DIFFERENCE_MINUEND_FLOW=870, PETRI_DIFFERENCE_MINUEND_PLACES=411, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=432, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=432, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=864, PETRI_PLACES=412, PETRI_TRANSITIONS=429} [2022-07-12 10:24:25,392 INFO L279 CegarLoopForPetriNet]: 417 programPoint places, -5 predicate places. [2022-07-12 10:24:25,412 INFO L495 AbstractCegarLoop]: Abstraction has has 412 places, 429 transitions, 864 flow [2022-07-12 10:24:25,413 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 444.0) internal successors, (888), 2 states have internal predecessors, (888), 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) [2022-07-12 10:24:25,413 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:24:25,414 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:24:25,414 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-12 10:24:25,415 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-12 10:24:25,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:24:25,416 INFO L85 PathProgramCache]: Analyzing trace with hash 430466396, now seen corresponding path program 1 times [2022-07-12 10:24:25,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:24:25,416 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889722035] [2022-07-12 10:24:25,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:24:25,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:24:25,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:24:25,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:24:25,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:24:25,649 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1889722035] [2022-07-12 10:24:25,650 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1889722035] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:24:25,650 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:24:25,651 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 10:24:25,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628163662] [2022-07-12 10:24:25,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:24:25,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 10:24:25,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:24:25,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 10:24:25,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-12 10:24:25,659 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 420 out of 465 [2022-07-12 10:24:25,661 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 412 places, 429 transitions, 864 flow. Second operand has 4 states, 4 states have (on average 423.5) internal successors, (1694), 4 states have internal predecessors, (1694), 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) [2022-07-12 10:24:25,662 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:24:25,666 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 420 of 465 [2022-07-12 10:24:25,666 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:24:25,917 INFO L129 PetriNetUnfolder]: 96/816 cut-off events. [2022-07-12 10:24:25,917 INFO L130 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-07-12 10:24:25,929 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1009 conditions, 816 events. 96/816 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 4463 event pairs, 22 based on Foata normal form. 0/737 useless extension candidates. Maximal degree in co-relation 1006. Up to 69 conditions per place. [2022-07-12 10:24:25,935 INFO L132 encePairwiseOnDemand]: 453/465 looper letters, 32 selfloop transitions, 11 changer transitions 0/447 dead transitions. [2022-07-12 10:24:25,936 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 412 places, 447 transitions, 993 flow [2022-07-12 10:24:25,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-12 10:24:25,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-07-12 10:24:25,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1724 transitions. [2022-07-12 10:24:25,940 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9268817204301075 [2022-07-12 10:24:25,941 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1724 transitions. [2022-07-12 10:24:25,941 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1724 transitions. [2022-07-12 10:24:25,942 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:24:25,942 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1724 transitions. [2022-07-12 10:24:25,945 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 431.0) internal successors, (1724), 4 states have internal predecessors, (1724), 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) [2022-07-12 10:24:25,949 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 465.0) internal successors, (2325), 5 states have internal predecessors, (2325), 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) [2022-07-12 10:24:25,950 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 465.0) internal successors, (2325), 5 states have internal predecessors, (2325), 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) [2022-07-12 10:24:25,950 INFO L186 Difference]: Start difference. First operand has 412 places, 429 transitions, 864 flow. Second operand 4 states and 1724 transitions. [2022-07-12 10:24:25,950 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 412 places, 447 transitions, 993 flow [2022-07-12 10:24:25,954 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 412 places, 447 transitions, 993 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-07-12 10:24:25,960 INFO L242 Difference]: Finished difference. Result has 415 places, 435 transitions, 934 flow [2022-07-12 10:24:25,960 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=465, PETRI_DIFFERENCE_MINUEND_FLOW=864, PETRI_DIFFERENCE_MINUEND_PLACES=409, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=429, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=418, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=934, PETRI_PLACES=415, PETRI_TRANSITIONS=435} [2022-07-12 10:24:25,961 INFO L279 CegarLoopForPetriNet]: 417 programPoint places, -2 predicate places. [2022-07-12 10:24:25,962 INFO L495 AbstractCegarLoop]: Abstraction has has 415 places, 435 transitions, 934 flow [2022-07-12 10:24:25,963 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 423.5) internal successors, (1694), 4 states have internal predecessors, (1694), 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) [2022-07-12 10:24:25,963 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:24:25,963 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:24:25,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-12 10:24:25,964 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-12 10:24:25,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:24:25,966 INFO L85 PathProgramCache]: Analyzing trace with hash 755583458, now seen corresponding path program 1 times [2022-07-12 10:24:25,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:24:25,967 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607514289] [2022-07-12 10:24:25,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:24:25,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:24:26,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:24:26,099 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:24:26,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:24:26,100 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607514289] [2022-07-12 10:24:26,101 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [607514289] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:24:26,101 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:24:26,101 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 10:24:26,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511973169] [2022-07-12 10:24:26,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:24:26,103 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 10:24:26,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:24:26,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 10:24:26,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 10:24:26,106 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 404 out of 465 [2022-07-12 10:24:26,108 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 415 places, 435 transitions, 934 flow. Second operand has 3 states, 3 states have (on average 409.3333333333333) internal successors, (1228), 3 states have internal predecessors, (1228), 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) [2022-07-12 10:24:26,108 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:24:26,108 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 404 of 465 [2022-07-12 10:24:26,108 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:24:31,970 INFO L129 PetriNetUnfolder]: 9837/43741 cut-off events. [2022-07-12 10:24:31,970 INFO L130 PetriNetUnfolder]: For 2068/2150 co-relation queries the response was YES. [2022-07-12 10:24:32,219 INFO L84 FinitePrefix]: Finished finitePrefix Result has 55854 conditions, 43741 events. 9837/43741 cut-off events. For 2068/2150 co-relation queries the response was YES. Maximal size of possible extension queue 1259. Compared 629327 event pairs, 6336 based on Foata normal form. 0/36321 useless extension candidates. Maximal degree in co-relation 55848. Up to 5798 conditions per place. [2022-07-12 10:24:32,526 INFO L132 encePairwiseOnDemand]: 462/465 looper letters, 74 selfloop transitions, 2 changer transitions 0/469 dead transitions. [2022-07-12 10:24:32,527 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 417 places, 469 transitions, 1169 flow [2022-07-12 10:24:32,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 10:24:32,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-12 10:24:32,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1287 transitions. [2022-07-12 10:24:32,530 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9225806451612903 [2022-07-12 10:24:32,530 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1287 transitions. [2022-07-12 10:24:32,530 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1287 transitions. [2022-07-12 10:24:32,531 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:24:32,531 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1287 transitions. [2022-07-12 10:24:32,534 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 429.0) internal successors, (1287), 3 states have internal predecessors, (1287), 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) [2022-07-12 10:24:32,536 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 465.0) internal successors, (1860), 4 states have internal predecessors, (1860), 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) [2022-07-12 10:24:32,538 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 465.0) internal successors, (1860), 4 states have internal predecessors, (1860), 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) [2022-07-12 10:24:32,538 INFO L186 Difference]: Start difference. First operand has 415 places, 435 transitions, 934 flow. Second operand 3 states and 1287 transitions. [2022-07-12 10:24:32,538 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 417 places, 469 transitions, 1169 flow [2022-07-12 10:24:32,546 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 417 places, 469 transitions, 1169 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-07-12 10:24:32,552 INFO L242 Difference]: Finished difference. Result has 419 places, 436 transitions, 948 flow [2022-07-12 10:24:32,552 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=465, PETRI_DIFFERENCE_MINUEND_FLOW=934, PETRI_DIFFERENCE_MINUEND_PLACES=415, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=435, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=433, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=948, PETRI_PLACES=419, PETRI_TRANSITIONS=436} [2022-07-12 10:24:32,555 INFO L279 CegarLoopForPetriNet]: 417 programPoint places, 2 predicate places. [2022-07-12 10:24:32,555 INFO L495 AbstractCegarLoop]: Abstraction has has 419 places, 436 transitions, 948 flow [2022-07-12 10:24:32,556 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 409.3333333333333) internal successors, (1228), 3 states have internal predecessors, (1228), 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) [2022-07-12 10:24:32,556 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:24:32,556 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:24:32,557 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-12 10:24:32,557 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-12 10:24:32,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:24:32,558 INFO L85 PathProgramCache]: Analyzing trace with hash 1209857346, now seen corresponding path program 1 times [2022-07-12 10:24:32,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:24:32,558 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174960957] [2022-07-12 10:24:32,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:24:32,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:24:32,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:24:32,617 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:24:32,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:24:32,617 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174960957] [2022-07-12 10:24:32,618 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1174960957] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:24:32,618 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:24:32,618 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 10:24:32,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879603366] [2022-07-12 10:24:32,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:24:32,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 10:24:32,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:24:32,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 10:24:32,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 10:24:32,625 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 404 out of 465 [2022-07-12 10:24:32,626 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 419 places, 436 transitions, 948 flow. Second operand has 3 states, 3 states have (on average 409.3333333333333) internal successors, (1228), 3 states have internal predecessors, (1228), 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) [2022-07-12 10:24:32,626 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:24:32,626 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 404 of 465 [2022-07-12 10:24:32,626 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:24:40,098 INFO L129 PetriNetUnfolder]: 14394/62075 cut-off events. [2022-07-12 10:24:40,098 INFO L130 PetriNetUnfolder]: For 3204/3204 co-relation queries the response was YES. [2022-07-12 10:24:40,589 INFO L84 FinitePrefix]: Finished finitePrefix Result has 80677 conditions, 62075 events. 14394/62075 cut-off events. For 3204/3204 co-relation queries the response was YES. Maximal size of possible extension queue 1881. Compared 939058 event pairs, 5748 based on Foata normal form. 0/51408 useless extension candidates. Maximal degree in co-relation 80669. Up to 8465 conditions per place. [2022-07-12 10:24:40,842 INFO L132 encePairwiseOnDemand]: 462/465 looper letters, 72 selfloop transitions, 2 changer transitions 0/468 dead transitions. [2022-07-12 10:24:40,842 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 421 places, 468 transitions, 1175 flow [2022-07-12 10:24:40,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 10:24:40,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-12 10:24:40,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1285 transitions. [2022-07-12 10:24:40,846 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.921146953405018 [2022-07-12 10:24:40,846 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1285 transitions. [2022-07-12 10:24:40,846 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1285 transitions. [2022-07-12 10:24:40,848 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:24:40,850 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1285 transitions. [2022-07-12 10:24:40,853 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 428.3333333333333) internal successors, (1285), 3 states have internal predecessors, (1285), 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) [2022-07-12 10:24:40,856 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 465.0) internal successors, (1860), 4 states have internal predecessors, (1860), 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) [2022-07-12 10:24:40,857 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 465.0) internal successors, (1860), 4 states have internal predecessors, (1860), 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) [2022-07-12 10:24:40,857 INFO L186 Difference]: Start difference. First operand has 419 places, 436 transitions, 948 flow. Second operand 3 states and 1285 transitions. [2022-07-12 10:24:40,857 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 421 places, 468 transitions, 1175 flow [2022-07-12 10:24:40,867 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 420 places, 468 transitions, 1171 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-07-12 10:24:40,872 INFO L242 Difference]: Finished difference. Result has 422 places, 437 transitions, 960 flow [2022-07-12 10:24:40,873 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=465, PETRI_DIFFERENCE_MINUEND_FLOW=946, PETRI_DIFFERENCE_MINUEND_PLACES=418, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=436, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=434, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=960, PETRI_PLACES=422, PETRI_TRANSITIONS=437} [2022-07-12 10:24:40,876 INFO L279 CegarLoopForPetriNet]: 417 programPoint places, 5 predicate places. [2022-07-12 10:24:40,877 INFO L495 AbstractCegarLoop]: Abstraction has has 422 places, 437 transitions, 960 flow [2022-07-12 10:24:40,877 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 409.3333333333333) internal successors, (1228), 3 states have internal predecessors, (1228), 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) [2022-07-12 10:24:40,878 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:24:40,878 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:24:40,878 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-12 10:24:40,878 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-12 10:24:40,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:24:40,879 INFO L85 PathProgramCache]: Analyzing trace with hash 1536483866, now seen corresponding path program 1 times [2022-07-12 10:24:40,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:24:40,880 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755549182] [2022-07-12 10:24:40,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:24:40,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:24:40,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:24:40,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:24:40,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:24:40,974 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755549182] [2022-07-12 10:24:40,974 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1755549182] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:24:40,974 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:24:40,974 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 10:24:40,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463932646] [2022-07-12 10:24:40,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:24:40,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 10:24:40,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:24:40,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 10:24:40,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-12 10:24:40,978 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 420 out of 465 [2022-07-12 10:24:40,980 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 422 places, 437 transitions, 960 flow. Second operand has 4 states, 4 states have (on average 423.5) internal successors, (1694), 4 states have internal predecessors, (1694), 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) [2022-07-12 10:24:40,980 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:24:40,981 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 420 of 465 [2022-07-12 10:24:40,981 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:24:41,618 INFO L129 PetriNetUnfolder]: 433/3008 cut-off events. [2022-07-12 10:24:41,618 INFO L130 PetriNetUnfolder]: For 320/328 co-relation queries the response was YES. [2022-07-12 10:24:41,661 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3810 conditions, 3008 events. 433/3008 cut-off events. For 320/328 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 27914 event pairs, 144 based on Foata normal form. 0/2634 useless extension candidates. Maximal degree in co-relation 3801. Up to 372 conditions per place. [2022-07-12 10:24:41,681 INFO L132 encePairwiseOnDemand]: 453/465 looper letters, 30 selfloop transitions, 11 changer transitions 0/453 dead transitions. [2022-07-12 10:24:41,681 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 425 places, 453 transitions, 1079 flow [2022-07-12 10:24:41,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-12 10:24:41,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-07-12 10:24:41,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1722 transitions. [2022-07-12 10:24:41,692 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9258064516129032 [2022-07-12 10:24:41,692 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1722 transitions. [2022-07-12 10:24:41,692 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1722 transitions. [2022-07-12 10:24:41,693 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:24:41,694 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1722 transitions. [2022-07-12 10:24:41,700 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 430.5) internal successors, (1722), 4 states have internal predecessors, (1722), 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) [2022-07-12 10:24:41,703 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 465.0) internal successors, (2325), 5 states have internal predecessors, (2325), 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) [2022-07-12 10:24:41,705 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 465.0) internal successors, (2325), 5 states have internal predecessors, (2325), 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) [2022-07-12 10:24:41,705 INFO L186 Difference]: Start difference. First operand has 422 places, 437 transitions, 960 flow. Second operand 4 states and 1722 transitions. [2022-07-12 10:24:41,705 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 425 places, 453 transitions, 1079 flow [2022-07-12 10:24:41,710 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 424 places, 453 transitions, 1077 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-07-12 10:24:41,715 INFO L242 Difference]: Finished difference. Result has 427 places, 443 transitions, 1028 flow [2022-07-12 10:24:41,716 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=465, PETRI_DIFFERENCE_MINUEND_FLOW=958, PETRI_DIFFERENCE_MINUEND_PLACES=421, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=437, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=426, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1028, PETRI_PLACES=427, PETRI_TRANSITIONS=443} [2022-07-12 10:24:41,719 INFO L279 CegarLoopForPetriNet]: 417 programPoint places, 10 predicate places. [2022-07-12 10:24:41,719 INFO L495 AbstractCegarLoop]: Abstraction has has 427 places, 443 transitions, 1028 flow [2022-07-12 10:24:41,720 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 423.5) internal successors, (1694), 4 states have internal predecessors, (1694), 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) [2022-07-12 10:24:41,720 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:24:41,721 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:24:41,721 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-12 10:24:41,721 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-12 10:24:41,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:24:41,722 INFO L85 PathProgramCache]: Analyzing trace with hash 1892962622, now seen corresponding path program 1 times [2022-07-12 10:24:41,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:24:41,723 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236135041] [2022-07-12 10:24:41,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:24:41,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:24:41,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:24:41,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:24:41,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:24:41,812 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1236135041] [2022-07-12 10:24:41,812 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1236135041] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:24:41,813 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:24:41,813 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 10:24:41,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872924148] [2022-07-12 10:24:41,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:24:41,814 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 10:24:41,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:24:41,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 10:24:41,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-12 10:24:41,867 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 427 out of 465 [2022-07-12 10:24:41,869 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 427 places, 443 transitions, 1028 flow. Second operand has 5 states, 5 states have (on average 429.8) internal successors, (2149), 5 states have internal predecessors, (2149), 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) [2022-07-12 10:24:41,869 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:24:41,870 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 427 of 465 [2022-07-12 10:24:41,870 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:24:42,048 INFO L129 PetriNetUnfolder]: 41/870 cut-off events. [2022-07-12 10:24:42,049 INFO L130 PetriNetUnfolder]: For 52/60 co-relation queries the response was YES. [2022-07-12 10:24:42,065 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1021 conditions, 870 events. 41/870 cut-off events. For 52/60 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 4162 event pairs, 0 based on Foata normal form. 0/805 useless extension candidates. Maximal degree in co-relation 1010. Up to 37 conditions per place. [2022-07-12 10:24:42,069 INFO L132 encePairwiseOnDemand]: 460/465 looper letters, 18 selfloop transitions, 4 changer transitions 0/447 dead transitions. [2022-07-12 10:24:42,069 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 431 places, 447 transitions, 1080 flow [2022-07-12 10:24:42,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 10:24:42,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-07-12 10:24:42,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 2158 transitions. [2022-07-12 10:24:42,073 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9281720430107527 [2022-07-12 10:24:42,073 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 2158 transitions. [2022-07-12 10:24:42,073 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 2158 transitions. [2022-07-12 10:24:42,074 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:24:42,074 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 2158 transitions. [2022-07-12 10:24:42,078 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 431.6) internal successors, (2158), 5 states have internal predecessors, (2158), 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) [2022-07-12 10:24:42,083 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 465.0) internal successors, (2790), 6 states have internal predecessors, (2790), 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) [2022-07-12 10:24:42,084 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 465.0) internal successors, (2790), 6 states have internal predecessors, (2790), 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) [2022-07-12 10:24:42,084 INFO L186 Difference]: Start difference. First operand has 427 places, 443 transitions, 1028 flow. Second operand 5 states and 2158 transitions. [2022-07-12 10:24:42,084 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 431 places, 447 transitions, 1080 flow [2022-07-12 10:24:42,088 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 431 places, 447 transitions, 1080 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-07-12 10:24:42,093 INFO L242 Difference]: Finished difference. Result has 432 places, 444 transitions, 1044 flow [2022-07-12 10:24:42,094 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=465, PETRI_DIFFERENCE_MINUEND_FLOW=1028, PETRI_DIFFERENCE_MINUEND_PLACES=427, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=443, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=439, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1044, PETRI_PLACES=432, PETRI_TRANSITIONS=444} [2022-07-12 10:24:42,095 INFO L279 CegarLoopForPetriNet]: 417 programPoint places, 15 predicate places. [2022-07-12 10:24:42,095 INFO L495 AbstractCegarLoop]: Abstraction has has 432 places, 444 transitions, 1044 flow [2022-07-12 10:24:42,096 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 429.8) internal successors, (2149), 5 states have internal predecessors, (2149), 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) [2022-07-12 10:24:42,096 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:24:42,096 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:24:42,096 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-12 10:24:42,097 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-12 10:24:42,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:24:42,097 INFO L85 PathProgramCache]: Analyzing trace with hash 1257930888, now seen corresponding path program 1 times [2022-07-12 10:24:42,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:24:42,098 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1204477916] [2022-07-12 10:24:42,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:24:42,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:24:42,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:24:42,174 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:24:42,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:24:42,175 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1204477916] [2022-07-12 10:24:42,175 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1204477916] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 10:24:42,176 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [661342214] [2022-07-12 10:24:42,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:24:42,176 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:24:42,176 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:24:42,180 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) [2022-07-12 10:24:42,184 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-12 10:24:42,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:24:42,335 INFO L263 TraceCheckSpWp]: Trace formula consists of 448 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-12 10:24:42,348 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:24:42,571 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:24:42,572 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 10:24:42,686 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:24:42,688 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [661342214] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 10:24:42,688 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-12 10:24:42,688 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 14 [2022-07-12 10:24:42,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224771524] [2022-07-12 10:24:42,688 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-12 10:24:42,689 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-12 10:24:42,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:24:42,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-12 10:24:42,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2022-07-12 10:24:42,695 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 426 out of 465 [2022-07-12 10:24:42,700 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 432 places, 444 transitions, 1044 flow. Second operand has 14 states, 14 states have (on average 428.7857142857143) internal successors, (6003), 14 states have internal predecessors, (6003), 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) [2022-07-12 10:24:42,700 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:24:42,701 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 426 of 465 [2022-07-12 10:24:42,701 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:24:43,004 INFO L129 PetriNetUnfolder]: 41/879 cut-off events. [2022-07-12 10:24:43,004 INFO L130 PetriNetUnfolder]: For 56/64 co-relation queries the response was YES. [2022-07-12 10:24:43,026 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1048 conditions, 879 events. 41/879 cut-off events. For 56/64 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 4153 event pairs, 0 based on Foata normal form. 2/817 useless extension candidates. Maximal degree in co-relation 1035. Up to 34 conditions per place. [2022-07-12 10:24:43,031 INFO L132 encePairwiseOnDemand]: 457/465 looper letters, 19 selfloop transitions, 11 changer transitions 0/454 dead transitions. [2022-07-12 10:24:43,031 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 442 places, 454 transitions, 1126 flow [2022-07-12 10:24:43,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-12 10:24:43,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-07-12 10:24:43,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 4718 transitions. [2022-07-12 10:24:43,042 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9223851417399804 [2022-07-12 10:24:43,042 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 4718 transitions. [2022-07-12 10:24:43,042 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 4718 transitions. [2022-07-12 10:24:43,045 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:24:43,046 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 4718 transitions. [2022-07-12 10:24:43,054 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 428.90909090909093) internal successors, (4718), 11 states have internal predecessors, (4718), 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) [2022-07-12 10:24:43,064 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 465.0) internal successors, (5580), 12 states have internal predecessors, (5580), 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) [2022-07-12 10:24:43,066 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 465.0) internal successors, (5580), 12 states have internal predecessors, (5580), 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) [2022-07-12 10:24:43,066 INFO L186 Difference]: Start difference. First operand has 432 places, 444 transitions, 1044 flow. Second operand 11 states and 4718 transitions. [2022-07-12 10:24:43,066 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 442 places, 454 transitions, 1126 flow [2022-07-12 10:24:43,070 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 439 places, 454 transitions, 1120 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-07-12 10:24:43,075 INFO L242 Difference]: Finished difference. Result has 442 places, 450 transitions, 1093 flow [2022-07-12 10:24:43,076 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=465, PETRI_DIFFERENCE_MINUEND_FLOW=1038, PETRI_DIFFERENCE_MINUEND_PLACES=429, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=444, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=436, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1093, PETRI_PLACES=442, PETRI_TRANSITIONS=450} [2022-07-12 10:24:43,077 INFO L279 CegarLoopForPetriNet]: 417 programPoint places, 25 predicate places. [2022-07-12 10:24:43,077 INFO L495 AbstractCegarLoop]: Abstraction has has 442 places, 450 transitions, 1093 flow [2022-07-12 10:24:43,079 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 428.7857142857143) internal successors, (6003), 14 states have internal predecessors, (6003), 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) [2022-07-12 10:24:43,079 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:24:43,080 INFO L200 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:24:43,108 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-12 10:24:43,299 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:24:43,300 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-12 10:24:43,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:24:43,300 INFO L85 PathProgramCache]: Analyzing trace with hash -1395066516, now seen corresponding path program 2 times [2022-07-12 10:24:43,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:24:43,300 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [38846337] [2022-07-12 10:24:43,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:24:43,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:24:43,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:24:43,421 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-12 10:24:43,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:24:43,422 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [38846337] [2022-07-12 10:24:43,422 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [38846337] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:24:43,422 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:24:43,422 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-12 10:24:43,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690899069] [2022-07-12 10:24:43,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:24:43,423 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-12 10:24:43,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:24:43,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-12 10:24:43,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-07-12 10:24:43,426 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 390 out of 465 [2022-07-12 10:24:43,429 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 442 places, 450 transitions, 1093 flow. Second operand has 8 states, 8 states have (on average 394.5) internal successors, (3156), 8 states have internal predecessors, (3156), 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) [2022-07-12 10:24:43,429 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:24:43,429 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 390 of 465 [2022-07-12 10:24:43,429 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:25:04,591 INFO L129 PetriNetUnfolder]: 32905/141679 cut-off events. [2022-07-12 10:25:04,591 INFO L130 PetriNetUnfolder]: For 6351/6351 co-relation queries the response was YES. [2022-07-12 10:25:06,213 INFO L84 FinitePrefix]: Finished finitePrefix Result has 194082 conditions, 141679 events. 32905/141679 cut-off events. For 6351/6351 co-relation queries the response was YES. Maximal size of possible extension queue 3558. Compared 2342164 event pairs, 12709 based on Foata normal form. 16/127283 useless extension candidates. Maximal degree in co-relation 194066. Up to 24204 conditions per place. [2022-07-12 10:25:06,874 INFO L132 encePairwiseOnDemand]: 452/465 looper letters, 124 selfloop transitions, 10 changer transitions 4/536 dead transitions. [2022-07-12 10:25:06,874 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 450 places, 536 transitions, 1551 flow [2022-07-12 10:25:06,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-12 10:25:06,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-07-12 10:25:06,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 3649 transitions. [2022-07-12 10:25:06,881 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8719235364396655 [2022-07-12 10:25:06,881 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 3649 transitions. [2022-07-12 10:25:06,881 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 3649 transitions. [2022-07-12 10:25:06,883 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:25:06,883 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 3649 transitions. [2022-07-12 10:25:06,889 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 405.44444444444446) internal successors, (3649), 9 states have internal predecessors, (3649), 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) [2022-07-12 10:25:06,895 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 465.0) internal successors, (4650), 10 states have internal predecessors, (4650), 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) [2022-07-12 10:25:06,896 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 465.0) internal successors, (4650), 10 states have internal predecessors, (4650), 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) [2022-07-12 10:25:06,896 INFO L186 Difference]: Start difference. First operand has 442 places, 450 transitions, 1093 flow. Second operand 9 states and 3649 transitions. [2022-07-12 10:25:06,896 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 450 places, 536 transitions, 1551 flow [2022-07-12 10:25:06,951 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 447 places, 536 transitions, 1542 flow, removed 2 selfloop flow, removed 3 redundant places. [2022-07-12 10:25:06,957 INFO L242 Difference]: Finished difference. Result has 453 places, 456 transitions, 1147 flow [2022-07-12 10:25:06,958 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=465, PETRI_DIFFERENCE_MINUEND_FLOW=1084, PETRI_DIFFERENCE_MINUEND_PLACES=439, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=450, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=440, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1147, PETRI_PLACES=453, PETRI_TRANSITIONS=456} [2022-07-12 10:25:06,958 INFO L279 CegarLoopForPetriNet]: 417 programPoint places, 36 predicate places. [2022-07-12 10:25:06,959 INFO L495 AbstractCegarLoop]: Abstraction has has 453 places, 456 transitions, 1147 flow [2022-07-12 10:25:06,960 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 394.5) internal successors, (3156), 8 states have internal predecessors, (3156), 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) [2022-07-12 10:25:06,960 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:25:06,960 INFO L200 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:25:06,960 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-12 10:25:06,961 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-12 10:25:06,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:25:06,961 INFO L85 PathProgramCache]: Analyzing trace with hash -1725997040, now seen corresponding path program 1 times [2022-07-12 10:25:06,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:25:06,962 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279139170] [2022-07-12 10:25:06,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:25:06,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:25:06,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:25:07,006 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-12 10:25:07,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:25:07,006 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279139170] [2022-07-12 10:25:07,007 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [279139170] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:25:07,007 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:25:07,007 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 10:25:07,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906844734] [2022-07-12 10:25:07,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:25:07,008 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 10:25:07,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:25:07,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 10:25:07,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 10:25:07,010 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 404 out of 465 [2022-07-12 10:25:07,011 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 453 places, 456 transitions, 1147 flow. Second operand has 3 states, 3 states have (on average 409.3333333333333) internal successors, (1228), 3 states have internal predecessors, (1228), 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) [2022-07-12 10:25:07,011 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:25:07,011 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 404 of 465 [2022-07-12 10:25:07,011 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand