./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/chl-chromosome-opt-symm.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f4b24e32 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/chl-chromosome-opt-symm.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 e9065224c0b163ad014fc0aee4009feab43ed37ef70e06d8d8f3b14d045f755a --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-13 22:03:12,155 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 22:03:12,157 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 22:03:12,175 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 22:03:12,176 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 22:03:12,176 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 22:03:12,177 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 22:03:12,178 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 22:03:12,179 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 22:03:12,180 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 22:03:12,180 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 22:03:12,181 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 22:03:12,181 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 22:03:12,182 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 22:03:12,183 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 22:03:12,184 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 22:03:12,184 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 22:03:12,185 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 22:03:12,186 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 22:03:12,187 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 22:03:12,188 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 22:03:12,189 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 22:03:12,190 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 22:03:12,190 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 22:03:12,191 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 22:03:12,193 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 22:03:12,193 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 22:03:12,194 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 22:03:12,194 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 22:03:12,195 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 22:03:12,195 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 22:03:12,195 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 22:03:12,196 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 22:03:12,197 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 22:03:12,197 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 22:03:12,198 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 22:03:12,198 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 22:03:12,198 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 22:03:12,199 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 22:03:12,199 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 22:03:12,199 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 22:03:12,200 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 22:03:12,201 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-13 22:03:12,217 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 22:03:12,217 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 22:03:12,218 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 22:03:12,218 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 22:03:12,218 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-13 22:03:12,219 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-13 22:03:12,219 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 22:03:12,219 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 22:03:12,219 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 22:03:12,220 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 22:03:12,220 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-13 22:03:12,220 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-13 22:03:12,220 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-13 22:03:12,220 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 22:03:12,220 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-13 22:03:12,220 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-13 22:03:12,221 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-13 22:03:12,221 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-13 22:03:12,221 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 22:03:12,221 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 22:03:12,221 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-13 22:03:12,221 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 22:03:12,222 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 22:03:12,222 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-13 22:03:12,222 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 22:03:12,222 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 22:03:12,222 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-13 22:03:12,222 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-13 22:03:12,223 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-13 22:03:12,223 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-13 22:03:12,223 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-13 22:03:12,223 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-13 22:03:12,223 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-13 22:03:12,223 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e9065224c0b163ad014fc0aee4009feab43ed37ef70e06d8d8f3b14d045f755a [2022-07-13 22:03:12,368 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 22:03:12,393 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 22:03:12,395 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 22:03:12,396 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 22:03:12,406 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 22:03:12,407 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/chl-chromosome-opt-symm.wvr.c [2022-07-13 22:03:12,452 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/56ba55e6c/8439e12096ca4341a745ba269d36971f/FLAGd9e3f5eaa [2022-07-13 22:03:12,810 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 22:03:12,811 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-chromosome-opt-symm.wvr.c [2022-07-13 22:03:12,815 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/56ba55e6c/8439e12096ca4341a745ba269d36971f/FLAGd9e3f5eaa [2022-07-13 22:03:12,823 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/56ba55e6c/8439e12096ca4341a745ba269d36971f [2022-07-13 22:03:12,825 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 22:03:12,826 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 22:03:12,827 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 22:03:12,827 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 22:03:12,829 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 22:03:12,830 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 10:03:12" (1/1) ... [2022-07-13 22:03:12,830 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6cad990f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:03:12, skipping insertion in model container [2022-07-13 22:03:12,831 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 10:03:12" (1/1) ... [2022-07-13 22:03:12,835 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 22:03:12,845 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 22:03:13,013 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-chromosome-opt-symm.wvr.c[2566,2579] [2022-07-13 22:03:13,021 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 22:03:13,026 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 22:03:13,043 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-chromosome-opt-symm.wvr.c[2566,2579] [2022-07-13 22:03:13,045 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 22:03:13,054 INFO L208 MainTranslator]: Completed translation [2022-07-13 22:03:13,055 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:03:13 WrapperNode [2022-07-13 22:03:13,055 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 22:03:13,056 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 22:03:13,056 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 22:03:13,056 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 22:03:13,064 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:03:13" (1/1) ... [2022-07-13 22:03:13,071 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:03:13" (1/1) ... [2022-07-13 22:03:13,090 INFO L137 Inliner]: procedures = 24, calls = 35, calls flagged for inlining = 9, calls inlined = 11, statements flattened = 182 [2022-07-13 22:03:13,091 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 22:03:13,091 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 22:03:13,091 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 22:03:13,091 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 22:03:13,096 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:03:13" (1/1) ... [2022-07-13 22:03:13,097 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:03:13" (1/1) ... [2022-07-13 22:03:13,099 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:03:13" (1/1) ... [2022-07-13 22:03:13,099 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:03:13" (1/1) ... [2022-07-13 22:03:13,103 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:03:13" (1/1) ... [2022-07-13 22:03:13,106 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:03:13" (1/1) ... [2022-07-13 22:03:13,107 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:03:13" (1/1) ... [2022-07-13 22:03:13,109 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 22:03:13,109 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 22:03:13,109 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 22:03:13,110 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 22:03:13,112 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:03:13" (1/1) ... [2022-07-13 22:03:13,117 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 22:03:13,123 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:03:13,131 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-13 22:03:13,133 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-13 22:03:13,156 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-13 22:03:13,156 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-07-13 22:03:13,156 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-07-13 22:03:13,156 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-07-13 22:03:13,156 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-07-13 22:03:13,157 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-13 22:03:13,157 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-13 22:03:13,157 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-13 22:03:13,157 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-13 22:03:13,157 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 22:03:13,157 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 22:03:13,157 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-13 22:03:13,158 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-13 22:03:13,158 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-07-13 22:03:13,212 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 22:03:13,214 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 22:03:13,419 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 22:03:13,427 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 22:03:13,427 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2022-07-13 22:03:13,428 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 10:03:13 BoogieIcfgContainer [2022-07-13 22:03:13,428 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 22:03:13,430 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-13 22:03:13,430 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-13 22:03:13,432 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-13 22:03:13,432 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 10:03:12" (1/3) ... [2022-07-13 22:03:13,433 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63aacacb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 10:03:13, skipping insertion in model container [2022-07-13 22:03:13,433 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:03:13" (2/3) ... [2022-07-13 22:03:13,433 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63aacacb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 10:03:13, skipping insertion in model container [2022-07-13 22:03:13,433 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 10:03:13" (3/3) ... [2022-07-13 22:03:13,434 INFO L111 eAbstractionObserver]: Analyzing ICFG chl-chromosome-opt-symm.wvr.c [2022-07-13 22:03:13,438 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-13 22:03:13,444 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-13 22:03:13,444 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-13 22:03:13,444 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-13 22:03:13,492 INFO L135 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-07-13 22:03:13,517 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 208 places, 222 transitions, 460 flow [2022-07-13 22:03:13,587 INFO L129 PetriNetUnfolder]: 21/220 cut-off events. [2022-07-13 22:03:13,588 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-07-13 22:03:13,593 INFO L84 FinitePrefix]: Finished finitePrefix Result has 229 conditions, 220 events. 21/220 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 263 event pairs, 0 based on Foata normal form. 0/198 useless extension candidates. Maximal degree in co-relation 155. Up to 3 conditions per place. [2022-07-13 22:03:13,593 INFO L82 GeneralOperation]: Start removeDead. Operand has 208 places, 222 transitions, 460 flow [2022-07-13 22:03:13,602 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 197 places, 211 transitions, 434 flow [2022-07-13 22:03:13,611 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 22:03:13,617 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@be2eb92, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@68760123 [2022-07-13 22:03:13,617 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-07-13 22:03:13,667 INFO L129 PetriNetUnfolder]: 21/210 cut-off events. [2022-07-13 22:03:13,671 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-07-13 22:03:13,672 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:03:13,672 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] [2022-07-13 22:03:13,673 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:03:13,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:03:13,677 INFO L85 PathProgramCache]: Analyzing trace with hash -1581105035, now seen corresponding path program 1 times [2022-07-13 22:03:13,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:03:13,684 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [942739077] [2022-07-13 22:03:13,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:03:13,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:03:13,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:03:13,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:03:13,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:03:13,847 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [942739077] [2022-07-13 22:03:13,847 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [942739077] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:03:13,848 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:03:13,848 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-13 22:03:13,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934519719] [2022-07-13 22:03:13,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:03:13,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-13 22:03:13,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:03:13,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-13 22:03:13,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-13 22:03:13,874 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 206 out of 222 [2022-07-13 22:03:13,876 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 211 transitions, 434 flow. Second operand has 2 states, 2 states have (on average 209.0) internal successors, (418), 2 states have internal predecessors, (418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:13,876 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:03:13,877 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 206 of 222 [2022-07-13 22:03:13,877 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:03:13,906 INFO L129 PetriNetUnfolder]: 10/200 cut-off events. [2022-07-13 22:03:13,906 INFO L130 PetriNetUnfolder]: For 9/10 co-relation queries the response was YES. [2022-07-13 22:03:13,907 INFO L84 FinitePrefix]: Finished finitePrefix Result has 214 conditions, 200 events. 10/200 cut-off events. For 9/10 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 253 event pairs, 0 based on Foata normal form. 13/196 useless extension candidates. Maximal degree in co-relation 148. Up to 5 conditions per place. [2022-07-13 22:03:13,908 INFO L132 encePairwiseOnDemand]: 211/222 looper letters, 4 selfloop transitions, 0 changer transitions 5/200 dead transitions. [2022-07-13 22:03:13,908 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 200 transitions, 420 flow [2022-07-13 22:03:13,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-13 22:03:13,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-07-13 22:03:13,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 427 transitions. [2022-07-13 22:03:13,918 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9617117117117117 [2022-07-13 22:03:13,918 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 427 transitions. [2022-07-13 22:03:13,918 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 427 transitions. [2022-07-13 22:03:13,920 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:03:13,921 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 427 transitions. [2022-07-13 22:03:13,924 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 213.5) internal successors, (427), 2 states have internal predecessors, (427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:13,928 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 222.0) internal successors, (666), 3 states have internal predecessors, (666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:13,928 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 222.0) internal successors, (666), 3 states have internal predecessors, (666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:13,930 INFO L186 Difference]: Start difference. First operand has 197 places, 211 transitions, 434 flow. Second operand 2 states and 427 transitions. [2022-07-13 22:03:13,930 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 200 transitions, 420 flow [2022-07-13 22:03:13,933 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 194 places, 200 transitions, 412 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-07-13 22:03:13,935 INFO L242 Difference]: Finished difference. Result has 194 places, 195 transitions, 394 flow [2022-07-13 22:03:13,937 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=222, PETRI_DIFFERENCE_MINUEND_FLOW=404, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=200, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=394, PETRI_PLACES=194, PETRI_TRANSITIONS=195} [2022-07-13 22:03:13,939 INFO L279 CegarLoopForPetriNet]: 197 programPoint places, -3 predicate places. [2022-07-13 22:03:13,939 INFO L495 AbstractCegarLoop]: Abstraction has has 194 places, 195 transitions, 394 flow [2022-07-13 22:03:13,940 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 209.0) internal successors, (418), 2 states have internal predecessors, (418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:13,940 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:03:13,940 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] [2022-07-13 22:03:13,940 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-13 22:03:13,940 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:03:13,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:03:13,941 INFO L85 PathProgramCache]: Analyzing trace with hash -1879356573, now seen corresponding path program 1 times [2022-07-13 22:03:13,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:03:13,941 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266659786] [2022-07-13 22:03:13,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:03:13,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:03:13,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:03:14,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:03:14,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:03:14,053 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [266659786] [2022-07-13 22:03:14,053 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [266659786] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:03:14,053 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:03:14,054 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 22:03:14,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447921652] [2022-07-13 22:03:14,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:03:14,055 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 22:03:14,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:03:14,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 22:03:14,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-13 22:03:14,057 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 182 out of 222 [2022-07-13 22:03:14,058 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 195 transitions, 394 flow. Second operand has 5 states, 5 states have (on average 186.0) internal successors, (930), 5 states have internal predecessors, (930), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:14,058 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:03:14,058 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 182 of 222 [2022-07-13 22:03:14,058 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:03:14,153 INFO L129 PetriNetUnfolder]: 10/207 cut-off events. [2022-07-13 22:03:14,154 INFO L130 PetriNetUnfolder]: For 2/3 co-relation queries the response was YES. [2022-07-13 22:03:14,155 INFO L84 FinitePrefix]: Finished finitePrefix Result has 248 conditions, 207 events. 10/207 cut-off events. For 2/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 242 event pairs, 0 based on Foata normal form. 0/195 useless extension candidates. Maximal degree in co-relation 245. Up to 25 conditions per place. [2022-07-13 22:03:14,155 INFO L132 encePairwiseOnDemand]: 212/222 looper letters, 28 selfloop transitions, 8 changer transitions 0/203 dead transitions. [2022-07-13 22:03:14,155 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 203 transitions, 482 flow [2022-07-13 22:03:14,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 22:03:14,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-07-13 22:03:14,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 948 transitions. [2022-07-13 22:03:14,159 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8540540540540541 [2022-07-13 22:03:14,159 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 948 transitions. [2022-07-13 22:03:14,160 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 948 transitions. [2022-07-13 22:03:14,160 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:03:14,160 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 948 transitions. [2022-07-13 22:03:14,162 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 189.6) internal successors, (948), 5 states have internal predecessors, (948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:14,165 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 222.0) internal successors, (1332), 6 states have internal predecessors, (1332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:14,166 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 222.0) internal successors, (1332), 6 states have internal predecessors, (1332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:14,166 INFO L186 Difference]: Start difference. First operand has 194 places, 195 transitions, 394 flow. Second operand 5 states and 948 transitions. [2022-07-13 22:03:14,166 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 203 transitions, 482 flow [2022-07-13 22:03:14,167 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 203 transitions, 482 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-07-13 22:03:14,170 INFO L242 Difference]: Finished difference. Result has 194 places, 197 transitions, 426 flow [2022-07-13 22:03:14,170 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=222, PETRI_DIFFERENCE_MINUEND_FLOW=394, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=187, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=426, PETRI_PLACES=194, PETRI_TRANSITIONS=197} [2022-07-13 22:03:14,171 INFO L279 CegarLoopForPetriNet]: 197 programPoint places, -3 predicate places. [2022-07-13 22:03:14,171 INFO L495 AbstractCegarLoop]: Abstraction has has 194 places, 197 transitions, 426 flow [2022-07-13 22:03:14,172 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 186.0) internal successors, (930), 5 states have internal predecessors, (930), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:14,172 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:03:14,172 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] [2022-07-13 22:03:14,172 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-13 22:03:14,173 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:03:14,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:03:14,173 INFO L85 PathProgramCache]: Analyzing trace with hash -419875030, now seen corresponding path program 1 times [2022-07-13 22:03:14,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:03:14,174 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [441299847] [2022-07-13 22:03:14,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:03:14,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:03:14,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:03:14,299 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-13 22:03:14,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:03:14,301 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [441299847] [2022-07-13 22:03:14,302 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [441299847] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 22:03:14,302 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [816957156] [2022-07-13 22:03:14,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:03:14,303 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:03:14,303 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:03:14,304 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 22:03:14,305 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-13 22:03:14,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:03:14,404 INFO L263 TraceCheckSpWp]: Trace formula consists of 305 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-13 22:03:14,409 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:03:14,532 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-13 22:03:14,532 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 22:03:14,593 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-13 22:03:14,594 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [816957156] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 22:03:14,594 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 22:03:14,594 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2022-07-13 22:03:14,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154493879] [2022-07-13 22:03:14,594 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 22:03:14,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-07-13 22:03:14,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:03:14,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-07-13 22:03:14,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2022-07-13 22:03:14,601 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 180 out of 222 [2022-07-13 22:03:14,604 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 197 transitions, 426 flow. Second operand has 15 states, 15 states have (on average 183.33333333333334) internal successors, (2750), 15 states have internal predecessors, (2750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:14,604 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:03:14,604 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 180 of 222 [2022-07-13 22:03:14,604 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:03:14,797 INFO L129 PetriNetUnfolder]: 10/225 cut-off events. [2022-07-13 22:03:14,797 INFO L130 PetriNetUnfolder]: For 10/11 co-relation queries the response was YES. [2022-07-13 22:03:14,800 INFO L84 FinitePrefix]: Finished finitePrefix Result has 300 conditions, 225 events. 10/225 cut-off events. For 10/11 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 224 event pairs, 0 based on Foata normal form. 4/219 useless extension candidates. Maximal degree in co-relation 295. Up to 19 conditions per place. [2022-07-13 22:03:14,801 INFO L132 encePairwiseOnDemand]: 206/222 looper letters, 30 selfloop transitions, 22 changer transitions 0/217 dead transitions. [2022-07-13 22:03:14,802 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 217 transitions, 574 flow [2022-07-13 22:03:14,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-13 22:03:14,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-07-13 22:03:14,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2036 transitions. [2022-07-13 22:03:14,806 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8337428337428338 [2022-07-13 22:03:14,806 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2036 transitions. [2022-07-13 22:03:14,806 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2036 transitions. [2022-07-13 22:03:14,807 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:03:14,807 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2036 transitions. [2022-07-13 22:03:14,819 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 185.0909090909091) internal successors, (2036), 11 states have internal predecessors, (2036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:14,824 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 222.0) internal successors, (2664), 12 states have internal predecessors, (2664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:14,825 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 222.0) internal successors, (2664), 12 states have internal predecessors, (2664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:14,826 INFO L186 Difference]: Start difference. First operand has 194 places, 197 transitions, 426 flow. Second operand 11 states and 2036 transitions. [2022-07-13 22:03:14,826 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 217 transitions, 574 flow [2022-07-13 22:03:14,829 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 217 transitions, 562 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-07-13 22:03:14,833 INFO L242 Difference]: Finished difference. Result has 204 places, 209 transitions, 525 flow [2022-07-13 22:03:14,833 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=222, PETRI_DIFFERENCE_MINUEND_FLOW=414, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=197, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=181, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=525, PETRI_PLACES=204, PETRI_TRANSITIONS=209} [2022-07-13 22:03:14,833 INFO L279 CegarLoopForPetriNet]: 197 programPoint places, 7 predicate places. [2022-07-13 22:03:14,834 INFO L495 AbstractCegarLoop]: Abstraction has has 204 places, 209 transitions, 525 flow [2022-07-13 22:03:14,835 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 183.33333333333334) internal successors, (2750), 15 states have internal predecessors, (2750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:14,836 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:03:14,836 INFO L200 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:03:14,868 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-13 22:03:15,055 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:03:15,056 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:03:15,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:03:15,057 INFO L85 PathProgramCache]: Analyzing trace with hash -970353476, now seen corresponding path program 2 times [2022-07-13 22:03:15,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:03:15,057 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424240137] [2022-07-13 22:03:15,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:03:15,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:03:15,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:03:15,204 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-13 22:03:15,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:03:15,206 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424240137] [2022-07-13 22:03:15,206 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1424240137] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 22:03:15,206 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [733741138] [2022-07-13 22:03:15,207 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-13 22:03:15,207 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:03:15,207 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:03:15,208 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 22:03:15,211 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-13 22:03:15,309 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-13 22:03:15,309 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 22:03:15,310 INFO L263 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-13 22:03:15,313 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:03:15,421 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-07-13 22:03:15,421 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 22:03:15,421 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [733741138] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:03:15,422 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 22:03:15,423 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [11] total 15 [2022-07-13 22:03:15,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540632452] [2022-07-13 22:03:15,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:03:15,424 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 22:03:15,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:03:15,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 22:03:15,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2022-07-13 22:03:15,425 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 190 out of 222 [2022-07-13 22:03:15,426 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 209 transitions, 525 flow. Second operand has 6 states, 6 states have (on average 192.0) internal successors, (1152), 6 states have internal predecessors, (1152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:15,426 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:03:15,426 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 190 of 222 [2022-07-13 22:03:15,426 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:03:15,609 INFO L129 PetriNetUnfolder]: 111/654 cut-off events. [2022-07-13 22:03:15,609 INFO L130 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2022-07-13 22:03:15,610 INFO L84 FinitePrefix]: Finished finitePrefix Result has 891 conditions, 654 events. 111/654 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 3171 event pairs, 7 based on Foata normal form. 0/587 useless extension candidates. Maximal degree in co-relation 883. Up to 70 conditions per place. [2022-07-13 22:03:15,612 INFO L132 encePairwiseOnDemand]: 214/222 looper letters, 50 selfloop transitions, 10 changer transitions 1/250 dead transitions. [2022-07-13 22:03:15,612 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 250 transitions, 734 flow [2022-07-13 22:03:15,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-13 22:03:15,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-07-13 22:03:15,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1583 transitions. [2022-07-13 22:03:15,614 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8913288288288288 [2022-07-13 22:03:15,614 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1583 transitions. [2022-07-13 22:03:15,615 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1583 transitions. [2022-07-13 22:03:15,615 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:03:15,615 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1583 transitions. [2022-07-13 22:03:15,617 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 197.875) internal successors, (1583), 8 states have internal predecessors, (1583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:15,619 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 222.0) internal successors, (1998), 9 states have internal predecessors, (1998), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:15,620 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 222.0) internal successors, (1998), 9 states have internal predecessors, (1998), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:15,620 INFO L186 Difference]: Start difference. First operand has 204 places, 209 transitions, 525 flow. Second operand 8 states and 1583 transitions. [2022-07-13 22:03:15,620 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 250 transitions, 734 flow [2022-07-13 22:03:15,622 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 208 places, 250 transitions, 717 flow, removed 4 selfloop flow, removed 3 redundant places. [2022-07-13 22:03:15,624 INFO L242 Difference]: Finished difference. Result has 213 places, 216 transitions, 571 flow [2022-07-13 22:03:15,624 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=222, PETRI_DIFFERENCE_MINUEND_FLOW=508, PETRI_DIFFERENCE_MINUEND_PLACES=201, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=209, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=571, PETRI_PLACES=213, PETRI_TRANSITIONS=216} [2022-07-13 22:03:15,625 INFO L279 CegarLoopForPetriNet]: 197 programPoint places, 16 predicate places. [2022-07-13 22:03:15,625 INFO L495 AbstractCegarLoop]: Abstraction has has 213 places, 216 transitions, 571 flow [2022-07-13 22:03:15,625 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 192.0) internal successors, (1152), 6 states have internal predecessors, (1152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:15,625 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:03:15,626 INFO L200 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:03:15,642 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-13 22:03:15,841 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2022-07-13 22:03:15,842 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:03:15,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:03:15,842 INFO L85 PathProgramCache]: Analyzing trace with hash 1651109514, now seen corresponding path program 3 times [2022-07-13 22:03:15,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:03:15,843 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1518603824] [2022-07-13 22:03:15,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:03:15,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:03:15,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:03:15,952 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-13 22:03:15,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:03:15,953 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1518603824] [2022-07-13 22:03:15,953 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1518603824] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 22:03:15,954 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1429473317] [2022-07-13 22:03:15,954 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-13 22:03:15,954 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:03:15,954 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:03:15,955 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 22:03:15,975 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-13 22:03:16,043 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-07-13 22:03:16,044 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 22:03:16,045 INFO L263 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-13 22:03:16,054 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:03:16,143 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-07-13 22:03:16,143 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 22:03:16,144 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1429473317] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:03:16,144 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 22:03:16,144 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [11] total 15 [2022-07-13 22:03:16,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215493148] [2022-07-13 22:03:16,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:03:16,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 22:03:16,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:03:16,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 22:03:16,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2022-07-13 22:03:16,147 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 190 out of 222 [2022-07-13 22:03:16,148 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 216 transitions, 571 flow. Second operand has 6 states, 6 states have (on average 192.0) internal successors, (1152), 6 states have internal predecessors, (1152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:16,148 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:03:16,148 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 190 of 222 [2022-07-13 22:03:16,148 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:03:16,386 INFO L129 PetriNetUnfolder]: 251/1448 cut-off events. [2022-07-13 22:03:16,387 INFO L130 PetriNetUnfolder]: For 153/156 co-relation queries the response was YES. [2022-07-13 22:03:16,390 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1999 conditions, 1448 events. 251/1448 cut-off events. For 153/156 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 10540 event pairs, 4 based on Foata normal form. 0/1300 useless extension candidates. Maximal degree in co-relation 1987. Up to 112 conditions per place. [2022-07-13 22:03:16,393 INFO L132 encePairwiseOnDemand]: 214/222 looper letters, 53 selfloop transitions, 10 changer transitions 1/260 dead transitions. [2022-07-13 22:03:16,393 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 260 transitions, 795 flow [2022-07-13 22:03:16,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-13 22:03:16,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-07-13 22:03:16,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1586 transitions. [2022-07-13 22:03:16,395 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8930180180180181 [2022-07-13 22:03:16,396 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1586 transitions. [2022-07-13 22:03:16,396 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1586 transitions. [2022-07-13 22:03:16,396 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:03:16,396 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1586 transitions. [2022-07-13 22:03:16,398 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 198.25) internal successors, (1586), 8 states have internal predecessors, (1586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:16,400 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 222.0) internal successors, (1998), 9 states have internal predecessors, (1998), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:16,401 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 222.0) internal successors, (1998), 9 states have internal predecessors, (1998), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:16,401 INFO L186 Difference]: Start difference. First operand has 213 places, 216 transitions, 571 flow. Second operand 8 states and 1586 transitions. [2022-07-13 22:03:16,401 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 260 transitions, 795 flow [2022-07-13 22:03:16,404 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 260 transitions, 795 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-07-13 22:03:16,406 INFO L242 Difference]: Finished difference. Result has 224 places, 223 transitions, 634 flow [2022-07-13 22:03:16,406 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=222, PETRI_DIFFERENCE_MINUEND_FLOW=571, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=216, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=634, PETRI_PLACES=224, PETRI_TRANSITIONS=223} [2022-07-13 22:03:16,407 INFO L279 CegarLoopForPetriNet]: 197 programPoint places, 27 predicate places. [2022-07-13 22:03:16,407 INFO L495 AbstractCegarLoop]: Abstraction has has 224 places, 223 transitions, 634 flow [2022-07-13 22:03:16,407 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 192.0) internal successors, (1152), 6 states have internal predecessors, (1152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:16,408 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:03:16,408 INFO L200 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:03:16,424 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-13 22:03:16,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:03:16,623 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:03:16,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:03:16,624 INFO L85 PathProgramCache]: Analyzing trace with hash 1582815960, now seen corresponding path program 4 times [2022-07-13 22:03:16,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:03:16,624 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017073183] [2022-07-13 22:03:16,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:03:16,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:03:16,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:03:16,698 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-13 22:03:16,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:03:16,699 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017073183] [2022-07-13 22:03:16,699 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2017073183] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 22:03:16,699 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1570031618] [2022-07-13 22:03:16,699 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-07-13 22:03:16,700 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:03:16,700 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:03:16,701 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 22:03:16,730 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-13 22:03:16,778 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-07-13 22:03:16,778 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 22:03:16,779 INFO L263 TraceCheckSpWp]: Trace formula consists of 321 conjuncts, 10 conjunts are in the unsatisfiable core [2022-07-13 22:03:16,781 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:03:16,898 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-13 22:03:16,899 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 22:03:16,975 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-13 22:03:16,975 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1570031618] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 22:03:16,975 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 22:03:16,975 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 22 [2022-07-13 22:03:16,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354695089] [2022-07-13 22:03:16,976 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 22:03:16,976 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-07-13 22:03:16,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:03:16,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-07-13 22:03:16,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=348, Unknown=0, NotChecked=0, Total=462 [2022-07-13 22:03:16,982 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 180 out of 222 [2022-07-13 22:03:16,984 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 224 places, 223 transitions, 634 flow. Second operand has 22 states, 22 states have (on average 183.1818181818182) internal successors, (4030), 22 states have internal predecessors, (4030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:16,984 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:03:16,985 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 180 of 222 [2022-07-13 22:03:16,985 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:03:17,204 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([615] thread2EXIT-->L90-2: Formula: (and (= 0 v_thread2Thread1of1ForFork1_thidvar2_4) (= v_thread2Thread1of1ForFork1_thidvar0_4 (let ((.cse0 (mod |v_ULTIMATE.start_main_#t~mem24#1_5| 4294967296))) (ite (<= .cse0 2147483647) .cse0 (+ (- 4294967296) .cse0)))) (= 0 v_thread2Thread1of1ForFork1_thidvar1_4)) InVars {thread2Thread1of1ForFork1_thidvar2=v_thread2Thread1of1ForFork1_thidvar2_4, thread2Thread1of1ForFork1_thidvar0=v_thread2Thread1of1ForFork1_thidvar0_4, ULTIMATE.start_main_#t~mem24#1=|v_ULTIMATE.start_main_#t~mem24#1_5|, thread2Thread1of1ForFork1_thidvar1=v_thread2Thread1of1ForFork1_thidvar1_4} OutVars{thread2Thread1of1ForFork1_thidvar2=v_thread2Thread1of1ForFork1_thidvar2_4, thread2Thread1of1ForFork1_thidvar0=v_thread2Thread1of1ForFork1_thidvar0_4, ULTIMATE.start_main_#t~mem24#1=|v_ULTIMATE.start_main_#t~mem24#1_5|, thread2Thread1of1ForFork1_thidvar1=v_thread2Thread1of1ForFork1_thidvar1_4} AuxVars[] AssignedVars[][232], [Black: 1501#(or (and (= |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| 0) (= ~isNullA~0 0)) (and (= |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| 1) (not (= ~isNullA~0 0)))), Black: 222#(and (<= 5 |ULTIMATE.start_create_fresh_int_array_~size#1|) (<= 5 |ULTIMATE.start_create_fresh_int_array_#in~size#1|) (= |ULTIMATE.start_create_fresh_int_array_~i~2#1| 0)), 2155#(and (= |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| 1) (= |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| 1) (not (= ~isNullB~0 0))), Black: 1089#(and (<= 5 |ULTIMATE.start_create_fresh_int_array_~size#1|) (<= 5 |ULTIMATE.start_create_fresh_int_array_#in~size#1|) (<= |ULTIMATE.start_create_fresh_int_array_~i~2#1| 1)), Black: 1095#(and (< |ULTIMATE.start_create_fresh_int_array_~i~2#1| |ULTIMATE.start_create_fresh_int_array_~size#1|) (<= 5 |ULTIMATE.start_create_fresh_int_array_~size#1|) (<= 5 |ULTIMATE.start_create_fresh_int_array_#in~size#1|)), 211#true, Black: 2157#(and (= |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| 1) (<= |thread1Thread1of1ForFork0_~i~0#1| 0) (= |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| 1) (not (= ~isNullB~0 0))), Black: 2052#(or (and (= |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| 1) (not (= ~isNullB~0 0))) (and (= ~isNullB~0 0) (= |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| 0))), Black: 1633#true, 1622#(and (= |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| 1) (= |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| 1) (not (= ~isNullA~0 0))), Black: 2153#(and (or (and (= |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| 1) (not (= ~isNullB~0 0))) (and (= ~isNullB~0 0) (= |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| 0))) (or (and (= |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| 1) (not (= ~isNullB~0 0))) (and (= ~isNullB~0 0) (= |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| 0)))), 3197#(and (<= 5 |ULTIMATE.start_create_fresh_int_array_~size#1|) (<= 5 |ULTIMATE.start_create_fresh_int_array_#in~size#1|)), Black: 1100#true, 126#L90-2true, Black: 1620#(and (or (and (= |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| 1) (not (= ~isNullA~0 0))) (and (= |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| 0) (= ~isNullA~0 0))) (or (and (= |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| 0) (= ~isNullA~0 0)) (and (= |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| 1) (not (= ~isNullA~0 0))))), Black: 1624#(and (<= |thread2Thread1of1ForFork1_~i~1#1| 0) (= |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| 1) (= |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| 1) (not (= ~isNullA~0 0))), 1081#(and (<= 5 |ULTIMATE.start_create_fresh_int_array_~size#1|) (<= 5 |ULTIMATE.start_create_fresh_int_array_#in~size#1|))]) [2022-07-13 22:03:17,205 INFO L384 tUnfolder$Statistics]: this new event has 218 ancestors and is cut-off event [2022-07-13 22:03:17,205 INFO L387 tUnfolder$Statistics]: existing Event has 202 ancestors and is cut-off event [2022-07-13 22:03:17,205 INFO L387 tUnfolder$Statistics]: existing Event has 202 ancestors and is cut-off event [2022-07-13 22:03:17,205 INFO L387 tUnfolder$Statistics]: existing Event has 189 ancestors and is cut-off event [2022-07-13 22:03:17,205 INFO L382 tUnfolder$Statistics]: inserting event number 5 for the transition-marking pair ([615] thread2EXIT-->L90-2: Formula: (and (= 0 v_thread2Thread1of1ForFork1_thidvar2_4) (= v_thread2Thread1of1ForFork1_thidvar0_4 (let ((.cse0 (mod |v_ULTIMATE.start_main_#t~mem24#1_5| 4294967296))) (ite (<= .cse0 2147483647) .cse0 (+ (- 4294967296) .cse0)))) (= 0 v_thread2Thread1of1ForFork1_thidvar1_4)) InVars {thread2Thread1of1ForFork1_thidvar2=v_thread2Thread1of1ForFork1_thidvar2_4, thread2Thread1of1ForFork1_thidvar0=v_thread2Thread1of1ForFork1_thidvar0_4, ULTIMATE.start_main_#t~mem24#1=|v_ULTIMATE.start_main_#t~mem24#1_5|, thread2Thread1of1ForFork1_thidvar1=v_thread2Thread1of1ForFork1_thidvar1_4} OutVars{thread2Thread1of1ForFork1_thidvar2=v_thread2Thread1of1ForFork1_thidvar2_4, thread2Thread1of1ForFork1_thidvar0=v_thread2Thread1of1ForFork1_thidvar0_4, ULTIMATE.start_main_#t~mem24#1=|v_ULTIMATE.start_main_#t~mem24#1_5|, thread2Thread1of1ForFork1_thidvar1=v_thread2Thread1of1ForFork1_thidvar1_4} AuxVars[] AssignedVars[][232], [Black: 222#(and (<= 5 |ULTIMATE.start_create_fresh_int_array_~size#1|) (<= 5 |ULTIMATE.start_create_fresh_int_array_#in~size#1|) (= |ULTIMATE.start_create_fresh_int_array_~i~2#1| 0)), Black: 1501#(or (and (= |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| 0) (= ~isNullA~0 0)) (and (= |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| 1) (not (= ~isNullA~0 0)))), 2155#(and (= |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| 1) (= |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| 1) (not (= ~isNullB~0 0))), Black: 1089#(and (<= 5 |ULTIMATE.start_create_fresh_int_array_~size#1|) (<= 5 |ULTIMATE.start_create_fresh_int_array_#in~size#1|) (<= |ULTIMATE.start_create_fresh_int_array_~i~2#1| 1)), Black: 1095#(and (< |ULTIMATE.start_create_fresh_int_array_~i~2#1| |ULTIMATE.start_create_fresh_int_array_~size#1|) (<= 5 |ULTIMATE.start_create_fresh_int_array_~size#1|) (<= 5 |ULTIMATE.start_create_fresh_int_array_#in~size#1|)), 211#true, Black: 2157#(and (= |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| 1) (<= |thread1Thread1of1ForFork0_~i~0#1| 0) (= |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| 1) (not (= ~isNullB~0 0))), Black: 2052#(or (and (= |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| 1) (not (= ~isNullB~0 0))) (and (= ~isNullB~0 0) (= |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| 0))), Black: 1633#true, 1622#(and (= |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| 1) (= |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| 1) (not (= ~isNullA~0 0))), Black: 2153#(and (or (and (= |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| 1) (not (= ~isNullB~0 0))) (and (= ~isNullB~0 0) (= |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| 0))) (or (and (= |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| 1) (not (= ~isNullB~0 0))) (and (= ~isNullB~0 0) (= |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| 0)))), 3197#(and (<= 5 |ULTIMATE.start_create_fresh_int_array_~size#1|) (<= 5 |ULTIMATE.start_create_fresh_int_array_#in~size#1|)), Black: 1100#true, 126#L90-2true, Black: 1620#(and (or (and (= |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| 1) (not (= ~isNullA~0 0))) (and (= |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| 0) (= ~isNullA~0 0))) (or (and (= |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| 0) (= ~isNullA~0 0)) (and (= |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| 1) (not (= ~isNullA~0 0))))), Black: 1624#(and (<= |thread2Thread1of1ForFork1_~i~1#1| 0) (= |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| 1) (= |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| 1) (not (= ~isNullA~0 0))), 1081#(and (<= 5 |ULTIMATE.start_create_fresh_int_array_~size#1|) (<= 5 |ULTIMATE.start_create_fresh_int_array_#in~size#1|))]) [2022-07-13 22:03:17,205 INFO L384 tUnfolder$Statistics]: this new event has 205 ancestors and is cut-off event [2022-07-13 22:03:17,205 INFO L387 tUnfolder$Statistics]: existing Event has 202 ancestors and is cut-off event [2022-07-13 22:03:17,206 INFO L387 tUnfolder$Statistics]: existing Event has 202 ancestors and is cut-off event [2022-07-13 22:03:17,206 INFO L387 tUnfolder$Statistics]: existing Event has 189 ancestors and is cut-off event [2022-07-13 22:03:17,206 INFO L387 tUnfolder$Statistics]: existing Event has 218 ancestors and is cut-off event [2022-07-13 22:03:17,207 INFO L129 PetriNetUnfolder]: 75/703 cut-off events. [2022-07-13 22:03:17,207 INFO L130 PetriNetUnfolder]: For 139/150 co-relation queries the response was YES. [2022-07-13 22:03:17,210 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1044 conditions, 703 events. 75/703 cut-off events. For 139/150 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 3455 event pairs, 0 based on Foata normal form. 4/660 useless extension candidates. Maximal degree in co-relation 1027. Up to 32 conditions per place. [2022-07-13 22:03:17,212 INFO L132 encePairwiseOnDemand]: 206/222 looper letters, 38 selfloop transitions, 34 changer transitions 0/251 dead transitions. [2022-07-13 22:03:17,212 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 239 places, 251 transitions, 890 flow [2022-07-13 22:03:17,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-13 22:03:17,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-07-13 22:03:17,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 3136 transitions. [2022-07-13 22:03:17,233 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.830948595654478 [2022-07-13 22:03:17,233 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 3136 transitions. [2022-07-13 22:03:17,233 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 3136 transitions. [2022-07-13 22:03:17,235 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:03:17,235 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 3136 transitions. [2022-07-13 22:03:17,239 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 184.47058823529412) internal successors, (3136), 17 states have internal predecessors, (3136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:17,244 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 222.0) internal successors, (3996), 18 states have internal predecessors, (3996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:17,245 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 222.0) internal successors, (3996), 18 states have internal predecessors, (3996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:17,245 INFO L186 Difference]: Start difference. First operand has 224 places, 223 transitions, 634 flow. Second operand 17 states and 3136 transitions. [2022-07-13 22:03:17,245 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 239 places, 251 transitions, 890 flow [2022-07-13 22:03:17,248 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 239 places, 251 transitions, 890 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-07-13 22:03:17,251 INFO L242 Difference]: Finished difference. Result has 242 places, 237 transitions, 809 flow [2022-07-13 22:03:17,251 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=222, PETRI_DIFFERENCE_MINUEND_FLOW=634, PETRI_DIFFERENCE_MINUEND_PLACES=223, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=223, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=809, PETRI_PLACES=242, PETRI_TRANSITIONS=237} [2022-07-13 22:03:17,253 INFO L279 CegarLoopForPetriNet]: 197 programPoint places, 45 predicate places. [2022-07-13 22:03:17,253 INFO L495 AbstractCegarLoop]: Abstraction has has 242 places, 237 transitions, 809 flow [2022-07-13 22:03:17,255 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 183.1818181818182) internal successors, (4030), 22 states have internal predecessors, (4030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:17,255 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:03:17,255 INFO L200 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:03:17,275 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-07-13 22:03:17,477 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:03:17,478 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:03:17,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:03:17,478 INFO L85 PathProgramCache]: Analyzing trace with hash -6964142, now seen corresponding path program 5 times [2022-07-13 22:03:17,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:03:17,479 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [393342568] [2022-07-13 22:03:17,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:03:17,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:03:17,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:03:17,585 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2022-07-13 22:03:17,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:03:17,585 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [393342568] [2022-07-13 22:03:17,585 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [393342568] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:03:17,585 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:03:17,585 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-13 22:03:17,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514738808] [2022-07-13 22:03:17,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:03:17,586 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 22:03:17,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:03:17,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 22:03:17,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-07-13 22:03:17,587 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 190 out of 222 [2022-07-13 22:03:17,588 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 242 places, 237 transitions, 809 flow. Second operand has 6 states, 6 states have (on average 192.0) internal successors, (1152), 6 states have internal predecessors, (1152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:17,588 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:03:17,588 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 190 of 222 [2022-07-13 22:03:17,588 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:03:17,804 INFO L129 PetriNetUnfolder]: 364/1845 cut-off events. [2022-07-13 22:03:17,805 INFO L130 PetriNetUnfolder]: For 641/672 co-relation queries the response was YES. [2022-07-13 22:03:17,811 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2983 conditions, 1845 events. 364/1845 cut-off events. For 641/672 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 12641 event pairs, 48 based on Foata normal form. 21/1703 useless extension candidates. Maximal degree in co-relation 2962. Up to 239 conditions per place. [2022-07-13 22:03:17,816 INFO L132 encePairwiseOnDemand]: 213/222 looper letters, 40 selfloop transitions, 15 changer transitions 0/265 dead transitions. [2022-07-13 22:03:17,816 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 247 places, 265 transitions, 1033 flow [2022-07-13 22:03:17,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-13 22:03:17,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-07-13 22:03:17,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1188 transitions. [2022-07-13 22:03:17,818 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8918918918918919 [2022-07-13 22:03:17,818 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1188 transitions. [2022-07-13 22:03:17,818 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1188 transitions. [2022-07-13 22:03:17,819 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:03:17,819 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1188 transitions. [2022-07-13 22:03:17,820 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 198.0) internal successors, (1188), 6 states have internal predecessors, (1188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:17,822 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 222.0) internal successors, (1554), 7 states have internal predecessors, (1554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:17,822 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 222.0) internal successors, (1554), 7 states have internal predecessors, (1554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:17,822 INFO L186 Difference]: Start difference. First operand has 242 places, 237 transitions, 809 flow. Second operand 6 states and 1188 transitions. [2022-07-13 22:03:17,823 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 247 places, 265 transitions, 1033 flow [2022-07-13 22:03:17,825 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 239 places, 265 transitions, 988 flow, removed 8 selfloop flow, removed 8 redundant places. [2022-07-13 22:03:17,828 INFO L242 Difference]: Finished difference. Result has 243 places, 244 transitions, 871 flow [2022-07-13 22:03:17,828 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=222, PETRI_DIFFERENCE_MINUEND_FLOW=764, PETRI_DIFFERENCE_MINUEND_PLACES=234, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=237, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=224, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=871, PETRI_PLACES=243, PETRI_TRANSITIONS=244} [2022-07-13 22:03:17,829 INFO L279 CegarLoopForPetriNet]: 197 programPoint places, 46 predicate places. [2022-07-13 22:03:17,829 INFO L495 AbstractCegarLoop]: Abstraction has has 243 places, 244 transitions, 871 flow [2022-07-13 22:03:17,829 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 192.0) internal successors, (1152), 6 states have internal predecessors, (1152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:17,829 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:03:17,829 INFO L200 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:03:17,830 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-13 22:03:17,830 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:03:17,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:03:17,830 INFO L85 PathProgramCache]: Analyzing trace with hash -1210663556, now seen corresponding path program 6 times [2022-07-13 22:03:17,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:03:17,830 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099318839] [2022-07-13 22:03:17,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:03:17,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:03:17,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:03:17,892 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2022-07-13 22:03:17,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:03:17,892 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099318839] [2022-07-13 22:03:17,892 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2099318839] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:03:17,893 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:03:17,893 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-13 22:03:17,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548062615] [2022-07-13 22:03:17,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:03:17,893 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 22:03:17,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:03:17,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 22:03:17,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-13 22:03:17,895 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 190 out of 222 [2022-07-13 22:03:17,896 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 243 places, 244 transitions, 871 flow. Second operand has 6 states, 6 states have (on average 192.0) internal successors, (1152), 6 states have internal predecessors, (1152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:17,896 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:03:17,896 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 190 of 222 [2022-07-13 22:03:17,896 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:03:18,168 INFO L129 PetriNetUnfolder]: 412/1902 cut-off events. [2022-07-13 22:03:18,168 INFO L130 PetriNetUnfolder]: For 1228/1292 co-relation queries the response was YES. [2022-07-13 22:03:18,174 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3376 conditions, 1902 events. 412/1902 cut-off events. For 1228/1292 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 13762 event pairs, 38 based on Foata normal form. 25/1756 useless extension candidates. Maximal degree in co-relation 3351. Up to 424 conditions per place. [2022-07-13 22:03:18,179 INFO L132 encePairwiseOnDemand]: 214/222 looper letters, 50 selfloop transitions, 15 changer transitions 0/275 dead transitions. [2022-07-13 22:03:18,179 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 275 transitions, 1142 flow [2022-07-13 22:03:18,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-13 22:03:18,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-07-13 22:03:18,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1190 transitions. [2022-07-13 22:03:18,182 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8933933933933934 [2022-07-13 22:03:18,182 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1190 transitions. [2022-07-13 22:03:18,182 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1190 transitions. [2022-07-13 22:03:18,182 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:03:18,183 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1190 transitions. [2022-07-13 22:03:18,184 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 198.33333333333334) internal successors, (1190), 6 states have internal predecessors, (1190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:18,186 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 222.0) internal successors, (1554), 7 states have internal predecessors, (1554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:18,186 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 222.0) internal successors, (1554), 7 states have internal predecessors, (1554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:18,186 INFO L186 Difference]: Start difference. First operand has 243 places, 244 transitions, 871 flow. Second operand 6 states and 1190 transitions. [2022-07-13 22:03:18,187 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 248 places, 275 transitions, 1142 flow [2022-07-13 22:03:18,190 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 275 transitions, 1132 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-07-13 22:03:18,193 INFO L242 Difference]: Finished difference. Result has 251 places, 250 transitions, 971 flow [2022-07-13 22:03:18,193 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=222, PETRI_DIFFERENCE_MINUEND_FLOW=865, PETRI_DIFFERENCE_MINUEND_PLACES=242, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=244, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=229, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=971, PETRI_PLACES=251, PETRI_TRANSITIONS=250} [2022-07-13 22:03:18,193 INFO L279 CegarLoopForPetriNet]: 197 programPoint places, 54 predicate places. [2022-07-13 22:03:18,194 INFO L495 AbstractCegarLoop]: Abstraction has has 251 places, 250 transitions, 971 flow [2022-07-13 22:03:18,194 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 192.0) internal successors, (1152), 6 states have internal predecessors, (1152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:18,194 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:03:18,195 INFO L200 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:03:18,195 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-13 22:03:18,195 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:03:18,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:03:18,195 INFO L85 PathProgramCache]: Analyzing trace with hash 218927882, now seen corresponding path program 7 times [2022-07-13 22:03:18,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:03:18,196 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1583417190] [2022-07-13 22:03:18,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:03:18,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:03:18,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:03:18,258 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2022-07-13 22:03:18,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:03:18,259 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1583417190] [2022-07-13 22:03:18,259 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1583417190] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:03:18,259 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:03:18,259 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-13 22:03:18,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261535115] [2022-07-13 22:03:18,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:03:18,260 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 22:03:18,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:03:18,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 22:03:18,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-13 22:03:18,261 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 190 out of 222 [2022-07-13 22:03:18,262 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 251 places, 250 transitions, 971 flow. Second operand has 6 states, 6 states have (on average 192.0) internal successors, (1152), 6 states have internal predecessors, (1152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:18,262 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:03:18,262 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 190 of 222 [2022-07-13 22:03:18,262 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:03:18,592 INFO L129 PetriNetUnfolder]: 471/2206 cut-off events. [2022-07-13 22:03:18,592 INFO L130 PetriNetUnfolder]: For 2089/2173 co-relation queries the response was YES. [2022-07-13 22:03:18,599 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4105 conditions, 2206 events. 471/2206 cut-off events. For 2089/2173 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 17083 event pairs, 49 based on Foata normal form. 20/2018 useless extension candidates. Maximal degree in co-relation 4076. Up to 485 conditions per place. [2022-07-13 22:03:18,604 INFO L132 encePairwiseOnDemand]: 214/222 looper letters, 56 selfloop transitions, 17 changer transitions 0/283 dead transitions. [2022-07-13 22:03:18,604 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 256 places, 283 transitions, 1290 flow [2022-07-13 22:03:18,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-13 22:03:18,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-07-13 22:03:18,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1193 transitions. [2022-07-13 22:03:18,607 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8956456456456456 [2022-07-13 22:03:18,607 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1193 transitions. [2022-07-13 22:03:18,607 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1193 transitions. [2022-07-13 22:03:18,607 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:03:18,607 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1193 transitions. [2022-07-13 22:03:18,609 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 198.83333333333334) internal successors, (1193), 6 states have internal predecessors, (1193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:18,610 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 222.0) internal successors, (1554), 7 states have internal predecessors, (1554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:18,611 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 222.0) internal successors, (1554), 7 states have internal predecessors, (1554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:18,611 INFO L186 Difference]: Start difference. First operand has 251 places, 250 transitions, 971 flow. Second operand 6 states and 1193 transitions. [2022-07-13 22:03:18,611 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 256 places, 283 transitions, 1290 flow [2022-07-13 22:03:18,616 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 255 places, 283 transitions, 1283 flow, removed 2 selfloop flow, removed 1 redundant places. [2022-07-13 22:03:18,618 INFO L242 Difference]: Finished difference. Result has 259 places, 259 transitions, 1128 flow [2022-07-13 22:03:18,619 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=222, PETRI_DIFFERENCE_MINUEND_FLOW=964, PETRI_DIFFERENCE_MINUEND_PLACES=250, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=250, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=234, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1128, PETRI_PLACES=259, PETRI_TRANSITIONS=259} [2022-07-13 22:03:18,619 INFO L279 CegarLoopForPetriNet]: 197 programPoint places, 62 predicate places. [2022-07-13 22:03:18,620 INFO L495 AbstractCegarLoop]: Abstraction has has 259 places, 259 transitions, 1128 flow [2022-07-13 22:03:18,620 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 192.0) internal successors, (1152), 6 states have internal predecessors, (1152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:18,620 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:03:18,621 INFO L200 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:03:18,621 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-13 22:03:18,621 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:03:18,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:03:18,621 INFO L85 PathProgramCache]: Analyzing trace with hash 2103399656, now seen corresponding path program 8 times [2022-07-13 22:03:18,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:03:18,622 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856756447] [2022-07-13 22:03:18,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:03:18,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:03:18,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:03:18,682 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2022-07-13 22:03:18,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:03:18,682 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [856756447] [2022-07-13 22:03:18,683 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [856756447] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:03:18,683 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:03:18,683 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-13 22:03:18,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841720977] [2022-07-13 22:03:18,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:03:18,683 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 22:03:18,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:03:18,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 22:03:18,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-07-13 22:03:18,685 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 190 out of 222 [2022-07-13 22:03:18,686 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 259 places, 259 transitions, 1128 flow. Second operand has 6 states, 6 states have (on average 192.0) internal successors, (1152), 6 states have internal predecessors, (1152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:18,686 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:03:18,686 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 190 of 222 [2022-07-13 22:03:18,686 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:03:18,998 INFO L129 PetriNetUnfolder]: 459/2121 cut-off events. [2022-07-13 22:03:18,999 INFO L130 PetriNetUnfolder]: For 2777/2870 co-relation queries the response was YES. [2022-07-13 22:03:19,007 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4212 conditions, 2121 events. 459/2121 cut-off events. For 2777/2870 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 16141 event pairs, 35 based on Foata normal form. 38/1964 useless extension candidates. Maximal degree in co-relation 4179. Up to 494 conditions per place. [2022-07-13 22:03:19,012 INFO L132 encePairwiseOnDemand]: 214/222 looper letters, 50 selfloop transitions, 20 changer transitions 1/281 dead transitions. [2022-07-13 22:03:19,012 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 264 places, 281 transitions, 1373 flow [2022-07-13 22:03:19,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-13 22:03:19,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-07-13 22:03:19,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1191 transitions. [2022-07-13 22:03:19,015 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8941441441441441 [2022-07-13 22:03:19,015 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1191 transitions. [2022-07-13 22:03:19,015 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1191 transitions. [2022-07-13 22:03:19,016 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:03:19,016 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1191 transitions. [2022-07-13 22:03:19,017 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 198.5) internal successors, (1191), 6 states have internal predecessors, (1191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:19,019 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 222.0) internal successors, (1554), 7 states have internal predecessors, (1554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:19,019 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 222.0) internal successors, (1554), 7 states have internal predecessors, (1554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:19,019 INFO L186 Difference]: Start difference. First operand has 259 places, 259 transitions, 1128 flow. Second operand 6 states and 1191 transitions. [2022-07-13 22:03:19,019 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 264 places, 281 transitions, 1373 flow [2022-07-13 22:03:19,027 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 263 places, 281 transitions, 1364 flow, removed 3 selfloop flow, removed 1 redundant places. [2022-07-13 22:03:19,029 INFO L242 Difference]: Finished difference. Result has 264 places, 260 transitions, 1186 flow [2022-07-13 22:03:19,030 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=222, PETRI_DIFFERENCE_MINUEND_FLOW=1121, PETRI_DIFFERENCE_MINUEND_PLACES=258, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=259, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=239, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1186, PETRI_PLACES=264, PETRI_TRANSITIONS=260} [2022-07-13 22:03:19,030 INFO L279 CegarLoopForPetriNet]: 197 programPoint places, 67 predicate places. [2022-07-13 22:03:19,030 INFO L495 AbstractCegarLoop]: Abstraction has has 264 places, 260 transitions, 1186 flow [2022-07-13 22:03:19,031 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 192.0) internal successors, (1152), 6 states have internal predecessors, (1152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:19,031 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:03:19,031 INFO L200 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:03:19,031 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-13 22:03:19,031 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:03:19,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:03:19,032 INFO L85 PathProgramCache]: Analyzing trace with hash -1785670614, now seen corresponding path program 9 times [2022-07-13 22:03:19,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:03:19,032 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694839668] [2022-07-13 22:03:19,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:03:19,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:03:19,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:03:19,094 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2022-07-13 22:03:19,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:03:19,095 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1694839668] [2022-07-13 22:03:19,095 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1694839668] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:03:19,095 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:03:19,095 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-13 22:03:19,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666639992] [2022-07-13 22:03:19,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:03:19,096 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 22:03:19,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:03:19,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 22:03:19,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-13 22:03:19,098 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 190 out of 222 [2022-07-13 22:03:19,098 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 264 places, 260 transitions, 1186 flow. Second operand has 6 states, 6 states have (on average 192.0) internal successors, (1152), 6 states have internal predecessors, (1152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:19,098 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:03:19,098 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 190 of 222 [2022-07-13 22:03:19,099 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:03:19,404 INFO L129 PetriNetUnfolder]: 466/2163 cut-off events. [2022-07-13 22:03:19,405 INFO L130 PetriNetUnfolder]: For 3289/3375 co-relation queries the response was YES. [2022-07-13 22:03:19,414 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4351 conditions, 2163 events. 466/2163 cut-off events. For 3289/3375 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 16540 event pairs, 65 based on Foata normal form. 17/1972 useless extension candidates. Maximal degree in co-relation 4317. Up to 485 conditions per place. [2022-07-13 22:03:19,419 INFO L132 encePairwiseOnDemand]: 215/222 looper letters, 54 selfloop transitions, 11 changer transitions 3/278 dead transitions. [2022-07-13 22:03:19,420 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 268 places, 278 transitions, 1416 flow [2022-07-13 22:03:19,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-13 22:03:19,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-07-13 22:03:19,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1182 transitions. [2022-07-13 22:03:19,422 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8873873873873874 [2022-07-13 22:03:19,422 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1182 transitions. [2022-07-13 22:03:19,422 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1182 transitions. [2022-07-13 22:03:19,422 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:03:19,423 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1182 transitions. [2022-07-13 22:03:19,424 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 197.0) internal successors, (1182), 6 states have internal predecessors, (1182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:19,425 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 222.0) internal successors, (1554), 7 states have internal predecessors, (1554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:19,426 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 222.0) internal successors, (1554), 7 states have internal predecessors, (1554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:19,426 INFO L186 Difference]: Start difference. First operand has 264 places, 260 transitions, 1186 flow. Second operand 6 states and 1182 transitions. [2022-07-13 22:03:19,426 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 268 places, 278 transitions, 1416 flow [2022-07-13 22:03:19,433 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 263 places, 278 transitions, 1368 flow, removed 6 selfloop flow, removed 5 redundant places. [2022-07-13 22:03:19,436 INFO L242 Difference]: Finished difference. Result has 266 places, 260 transitions, 1179 flow [2022-07-13 22:03:19,436 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=222, PETRI_DIFFERENCE_MINUEND_FLOW=1142, PETRI_DIFFERENCE_MINUEND_PLACES=258, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=260, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=249, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1179, PETRI_PLACES=266, PETRI_TRANSITIONS=260} [2022-07-13 22:03:19,436 INFO L279 CegarLoopForPetriNet]: 197 programPoint places, 69 predicate places. [2022-07-13 22:03:19,436 INFO L495 AbstractCegarLoop]: Abstraction has has 266 places, 260 transitions, 1179 flow [2022-07-13 22:03:19,437 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 192.0) internal successors, (1152), 6 states have internal predecessors, (1152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:19,437 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:03:19,437 INFO L200 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:03:19,437 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-13 22:03:19,437 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:03:19,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:03:19,438 INFO L85 PathProgramCache]: Analyzing trace with hash 1499166498, now seen corresponding path program 10 times [2022-07-13 22:03:19,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:03:19,438 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699081891] [2022-07-13 22:03:19,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:03:19,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:03:19,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:03:19,516 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2022-07-13 22:03:19,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:03:19,517 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1699081891] [2022-07-13 22:03:19,517 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1699081891] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:03:19,517 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:03:19,517 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-13 22:03:19,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428795490] [2022-07-13 22:03:19,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:03:19,517 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 22:03:19,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:03:19,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 22:03:19,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-07-13 22:03:19,519 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 190 out of 222 [2022-07-13 22:03:19,519 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 266 places, 260 transitions, 1179 flow. Second operand has 6 states, 6 states have (on average 192.0) internal successors, (1152), 6 states have internal predecessors, (1152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:19,519 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:03:19,519 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 190 of 222 [2022-07-13 22:03:19,520 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:03:19,846 INFO L129 PetriNetUnfolder]: 462/2141 cut-off events. [2022-07-13 22:03:19,846 INFO L130 PetriNetUnfolder]: For 3174/3260 co-relation queries the response was YES. [2022-07-13 22:03:19,856 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4244 conditions, 2141 events. 462/2141 cut-off events. For 3174/3260 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 16262 event pairs, 64 based on Foata normal form. 29/1965 useless extension candidates. Maximal degree in co-relation 4208. Up to 485 conditions per place. [2022-07-13 22:03:19,861 INFO L132 encePairwiseOnDemand]: 215/222 looper letters, 46 selfloop transitions, 17 changer transitions 1/274 dead transitions. [2022-07-13 22:03:19,861 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 270 places, 274 transitions, 1370 flow [2022-07-13 22:03:19,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-13 22:03:19,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-07-13 22:03:19,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1185 transitions. [2022-07-13 22:03:19,863 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8896396396396397 [2022-07-13 22:03:19,863 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1185 transitions. [2022-07-13 22:03:19,863 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1185 transitions. [2022-07-13 22:03:19,864 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:03:19,864 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1185 transitions. [2022-07-13 22:03:19,865 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 197.5) internal successors, (1185), 6 states have internal predecessors, (1185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:19,867 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 222.0) internal successors, (1554), 7 states have internal predecessors, (1554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:19,867 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 222.0) internal successors, (1554), 7 states have internal predecessors, (1554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:19,867 INFO L186 Difference]: Start difference. First operand has 266 places, 260 transitions, 1179 flow. Second operand 6 states and 1185 transitions. [2022-07-13 22:03:19,867 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 270 places, 274 transitions, 1370 flow [2022-07-13 22:03:19,875 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 265 places, 274 transitions, 1342 flow, removed 3 selfloop flow, removed 5 redundant places. [2022-07-13 22:03:19,877 INFO L242 Difference]: Finished difference. Result has 266 places, 260 transitions, 1190 flow [2022-07-13 22:03:19,878 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=222, PETRI_DIFFERENCE_MINUEND_FLOW=1153, PETRI_DIFFERENCE_MINUEND_PLACES=260, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=260, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=243, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1190, PETRI_PLACES=266, PETRI_TRANSITIONS=260} [2022-07-13 22:03:19,878 INFO L279 CegarLoopForPetriNet]: 197 programPoint places, 69 predicate places. [2022-07-13 22:03:19,878 INFO L495 AbstractCegarLoop]: Abstraction has has 266 places, 260 transitions, 1190 flow [2022-07-13 22:03:19,879 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 192.0) internal successors, (1152), 6 states have internal predecessors, (1152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:19,879 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:03:19,879 INFO L200 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:03:19,879 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-13 22:03:19,879 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:03:19,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:03:19,880 INFO L85 PathProgramCache]: Analyzing trace with hash -2013126836, now seen corresponding path program 11 times [2022-07-13 22:03:19,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:03:19,880 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1977632966] [2022-07-13 22:03:19,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:03:19,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:03:19,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:03:19,948 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2022-07-13 22:03:19,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:03:19,949 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1977632966] [2022-07-13 22:03:19,949 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1977632966] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:03:19,949 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:03:19,949 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-13 22:03:19,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264466928] [2022-07-13 22:03:19,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:03:19,950 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 22:03:19,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:03:19,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 22:03:19,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-07-13 22:03:19,951 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 190 out of 222 [2022-07-13 22:03:19,952 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 266 places, 260 transitions, 1190 flow. Second operand has 6 states, 6 states have (on average 192.0) internal successors, (1152), 6 states have internal predecessors, (1152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:19,952 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:03:19,952 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 190 of 222 [2022-07-13 22:03:19,952 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:03:20,569 INFO L129 PetriNetUnfolder]: 838/5234 cut-off events. [2022-07-13 22:03:20,569 INFO L130 PetriNetUnfolder]: For 4988/5051 co-relation queries the response was YES. [2022-07-13 22:03:20,594 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8649 conditions, 5234 events. 838/5234 cut-off events. For 4988/5051 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 53127 event pairs, 194 based on Foata normal form. 29/4752 useless extension candidates. Maximal degree in co-relation 8614. Up to 386 conditions per place. [2022-07-13 22:03:20,604 INFO L132 encePairwiseOnDemand]: 213/222 looper letters, 44 selfloop transitions, 15 changer transitions 0/292 dead transitions. [2022-07-13 22:03:20,605 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 269 places, 292 transitions, 1434 flow [2022-07-13 22:03:20,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-13 22:03:20,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-07-13 22:03:20,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1192 transitions. [2022-07-13 22:03:20,607 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8948948948948949 [2022-07-13 22:03:20,607 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1192 transitions. [2022-07-13 22:03:20,607 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1192 transitions. [2022-07-13 22:03:20,608 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:03:20,608 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1192 transitions. [2022-07-13 22:03:20,610 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 198.66666666666666) internal successors, (1192), 6 states have internal predecessors, (1192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:20,611 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 222.0) internal successors, (1554), 7 states have internal predecessors, (1554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:20,611 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 222.0) internal successors, (1554), 7 states have internal predecessors, (1554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:20,612 INFO L186 Difference]: Start difference. First operand has 266 places, 260 transitions, 1190 flow. Second operand 6 states and 1192 transitions. [2022-07-13 22:03:20,612 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 269 places, 292 transitions, 1434 flow [2022-07-13 22:03:20,626 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 266 places, 292 transitions, 1411 flow, removed 5 selfloop flow, removed 3 redundant places. [2022-07-13 22:03:20,629 INFO L242 Difference]: Finished difference. Result has 270 places, 267 transitions, 1274 flow [2022-07-13 22:03:20,629 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=222, PETRI_DIFFERENCE_MINUEND_FLOW=1167, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=260, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=247, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1274, PETRI_PLACES=270, PETRI_TRANSITIONS=267} [2022-07-13 22:03:20,630 INFO L279 CegarLoopForPetriNet]: 197 programPoint places, 73 predicate places. [2022-07-13 22:03:20,630 INFO L495 AbstractCegarLoop]: Abstraction has has 270 places, 267 transitions, 1274 flow [2022-07-13 22:03:20,630 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 192.0) internal successors, (1152), 6 states have internal predecessors, (1152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:20,631 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:03:20,631 INFO L200 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:03:20,631 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-13 22:03:20,631 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:03:20,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:03:20,632 INFO L85 PathProgramCache]: Analyzing trace with hash 742349944, now seen corresponding path program 12 times [2022-07-13 22:03:20,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:03:20,632 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1769353511] [2022-07-13 22:03:20,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:03:20,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:03:20,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:03:20,751 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2022-07-13 22:03:20,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:03:20,751 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1769353511] [2022-07-13 22:03:20,751 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1769353511] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:03:20,751 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:03:20,751 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-13 22:03:20,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441455304] [2022-07-13 22:03:20,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:03:20,752 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 22:03:20,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:03:20,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 22:03:20,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-07-13 22:03:20,753 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 190 out of 222 [2022-07-13 22:03:20,754 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 270 places, 267 transitions, 1274 flow. Second operand has 6 states, 6 states have (on average 192.0) internal successors, (1152), 6 states have internal predecessors, (1152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:20,754 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:03:20,754 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 190 of 222 [2022-07-13 22:03:20,754 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:03:21,395 INFO L129 PetriNetUnfolder]: 923/5375 cut-off events. [2022-07-13 22:03:21,396 INFO L130 PetriNetUnfolder]: For 5506/5596 co-relation queries the response was YES. [2022-07-13 22:03:21,422 INFO L84 FinitePrefix]: Finished finitePrefix Result has 9291 conditions, 5375 events. 923/5375 cut-off events. For 5506/5596 co-relation queries the response was YES. Maximal size of possible extension queue 201. Compared 56125 event pairs, 165 based on Foata normal form. 38/4948 useless extension candidates. Maximal degree in co-relation 9253. Up to 707 conditions per place. [2022-07-13 22:03:21,433 INFO L132 encePairwiseOnDemand]: 213/222 looper letters, 55 selfloop transitions, 20 changer transitions 0/308 dead transitions. [2022-07-13 22:03:21,433 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 275 places, 308 transitions, 1614 flow [2022-07-13 22:03:21,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-13 22:03:21,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-07-13 22:03:21,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1198 transitions. [2022-07-13 22:03:21,436 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8993993993993994 [2022-07-13 22:03:21,436 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1198 transitions. [2022-07-13 22:03:21,436 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1198 transitions. [2022-07-13 22:03:21,436 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:03:21,436 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1198 transitions. [2022-07-13 22:03:21,438 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 199.66666666666666) internal successors, (1198), 6 states have internal predecessors, (1198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:21,439 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 222.0) internal successors, (1554), 7 states have internal predecessors, (1554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:21,440 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 222.0) internal successors, (1554), 7 states have internal predecessors, (1554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:21,440 INFO L186 Difference]: Start difference. First operand has 270 places, 267 transitions, 1274 flow. Second operand 6 states and 1198 transitions. [2022-07-13 22:03:21,440 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 275 places, 308 transitions, 1614 flow [2022-07-13 22:03:21,455 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 274 places, 308 transitions, 1603 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-07-13 22:03:21,458 INFO L242 Difference]: Finished difference. Result has 279 places, 278 transitions, 1446 flow [2022-07-13 22:03:21,458 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=222, PETRI_DIFFERENCE_MINUEND_FLOW=1268, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=267, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=248, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1446, PETRI_PLACES=279, PETRI_TRANSITIONS=278} [2022-07-13 22:03:21,459 INFO L279 CegarLoopForPetriNet]: 197 programPoint places, 82 predicate places. [2022-07-13 22:03:21,459 INFO L495 AbstractCegarLoop]: Abstraction has has 279 places, 278 transitions, 1446 flow [2022-07-13 22:03:21,459 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 192.0) internal successors, (1152), 6 states have internal predecessors, (1152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:21,459 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:03:21,460 INFO L200 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:03:21,460 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-13 22:03:21,460 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:03:21,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:03:21,460 INFO L85 PathProgramCache]: Analyzing trace with hash -1311793190, now seen corresponding path program 13 times [2022-07-13 22:03:21,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:03:21,461 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140911103] [2022-07-13 22:03:21,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:03:21,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:03:21,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:03:21,525 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2022-07-13 22:03:21,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:03:21,525 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140911103] [2022-07-13 22:03:21,525 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1140911103] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:03:21,526 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:03:21,526 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-13 22:03:21,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994373569] [2022-07-13 22:03:21,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:03:21,526 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 22:03:21,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:03:21,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 22:03:21,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-07-13 22:03:21,528 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 190 out of 222 [2022-07-13 22:03:21,529 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 279 places, 278 transitions, 1446 flow. Second operand has 6 states, 6 states have (on average 192.0) internal successors, (1152), 6 states have internal predecessors, (1152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:21,529 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:03:21,529 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 190 of 222 [2022-07-13 22:03:21,529 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:03:22,286 INFO L129 PetriNetUnfolder]: 933/5364 cut-off events. [2022-07-13 22:03:22,287 INFO L130 PetriNetUnfolder]: For 6813/6981 co-relation queries the response was YES. [2022-07-13 22:03:22,312 INFO L84 FinitePrefix]: Finished finitePrefix Result has 9964 conditions, 5364 events. 933/5364 cut-off events. For 6813/6981 co-relation queries the response was YES. Maximal size of possible extension queue 207. Compared 56673 event pairs, 253 based on Foata normal form. 50/4944 useless extension candidates. Maximal degree in co-relation 9922. Up to 909 conditions per place. [2022-07-13 22:03:22,323 INFO L132 encePairwiseOnDemand]: 214/222 looper letters, 57 selfloop transitions, 19 changer transitions 0/309 dead transitions. [2022-07-13 22:03:22,323 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 284 places, 309 transitions, 1756 flow [2022-07-13 22:03:22,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-13 22:03:22,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-07-13 22:03:22,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1195 transitions. [2022-07-13 22:03:22,326 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8971471471471472 [2022-07-13 22:03:22,326 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1195 transitions. [2022-07-13 22:03:22,326 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1195 transitions. [2022-07-13 22:03:22,327 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:03:22,327 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1195 transitions. [2022-07-13 22:03:22,329 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 199.16666666666666) internal successors, (1195), 6 states have internal predecessors, (1195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:22,330 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 222.0) internal successors, (1554), 7 states have internal predecessors, (1554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:22,331 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 222.0) internal successors, (1554), 7 states have internal predecessors, (1554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:22,331 INFO L186 Difference]: Start difference. First operand has 279 places, 278 transitions, 1446 flow. Second operand 6 states and 1195 transitions. [2022-07-13 22:03:22,331 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 284 places, 309 transitions, 1756 flow [2022-07-13 22:03:22,352 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 284 places, 309 transitions, 1742 flow, removed 7 selfloop flow, removed 0 redundant places. [2022-07-13 22:03:22,355 INFO L242 Difference]: Finished difference. Result has 288 places, 283 transitions, 1566 flow [2022-07-13 22:03:22,355 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=222, PETRI_DIFFERENCE_MINUEND_FLOW=1432, PETRI_DIFFERENCE_MINUEND_PLACES=279, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=278, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=259, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1566, PETRI_PLACES=288, PETRI_TRANSITIONS=283} [2022-07-13 22:03:22,356 INFO L279 CegarLoopForPetriNet]: 197 programPoint places, 91 predicate places. [2022-07-13 22:03:22,356 INFO L495 AbstractCegarLoop]: Abstraction has has 288 places, 283 transitions, 1566 flow [2022-07-13 22:03:22,356 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 192.0) internal successors, (1152), 6 states have internal predecessors, (1152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:22,356 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:03:22,357 INFO L200 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:03:22,357 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-13 22:03:22,357 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:03:22,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:03:22,357 INFO L85 PathProgramCache]: Analyzing trace with hash 1190843316, now seen corresponding path program 1 times [2022-07-13 22:03:22,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:03:22,358 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [430415989] [2022-07-13 22:03:22,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:03:22,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:03:22,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:03:22,430 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2022-07-13 22:03:22,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:03:22,430 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [430415989] [2022-07-13 22:03:22,431 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [430415989] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:03:22,431 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:03:22,431 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-13 22:03:22,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962655881] [2022-07-13 22:03:22,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:03:22,431 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 22:03:22,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:03:22,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 22:03:22,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-13 22:03:22,433 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 190 out of 222 [2022-07-13 22:03:22,434 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 288 places, 283 transitions, 1566 flow. Second operand has 6 states, 6 states have (on average 192.0) internal successors, (1152), 6 states have internal predecessors, (1152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:22,434 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:03:22,434 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 190 of 222 [2022-07-13 22:03:22,434 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:03:23,221 INFO L129 PetriNetUnfolder]: 951/5605 cut-off events. [2022-07-13 22:03:23,222 INFO L130 PetriNetUnfolder]: For 7884/8052 co-relation queries the response was YES. [2022-07-13 22:03:23,261 INFO L84 FinitePrefix]: Finished finitePrefix Result has 10459 conditions, 5605 events. 951/5605 cut-off events. For 7884/8052 co-relation queries the response was YES. Maximal size of possible extension queue 211. Compared 59678 event pairs, 153 based on Foata normal form. 34/5135 useless extension candidates. Maximal degree in co-relation 10412. Up to 509 conditions per place. [2022-07-13 22:03:23,299 INFO L132 encePairwiseOnDemand]: 214/222 looper letters, 65 selfloop transitions, 11 changer transitions 6/315 dead transitions. [2022-07-13 22:03:23,306 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 293 places, 315 transitions, 1950 flow [2022-07-13 22:03:23,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-13 22:03:23,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-07-13 22:03:23,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1186 transitions. [2022-07-13 22:03:23,321 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8903903903903904 [2022-07-13 22:03:23,321 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1186 transitions. [2022-07-13 22:03:23,321 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1186 transitions. [2022-07-13 22:03:23,321 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:03:23,321 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1186 transitions. [2022-07-13 22:03:23,323 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 197.66666666666666) internal successors, (1186), 6 states have internal predecessors, (1186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:23,324 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 222.0) internal successors, (1554), 7 states have internal predecessors, (1554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:23,324 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 222.0) internal successors, (1554), 7 states have internal predecessors, (1554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:23,324 INFO L186 Difference]: Start difference. First operand has 288 places, 283 transitions, 1566 flow. Second operand 6 states and 1186 transitions. [2022-07-13 22:03:23,324 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 293 places, 315 transitions, 1950 flow [2022-07-13 22:03:23,379 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 292 places, 315 transitions, 1925 flow, removed 8 selfloop flow, removed 1 redundant places. [2022-07-13 22:03:23,382 INFO L242 Difference]: Finished difference. Result has 296 places, 284 transitions, 1602 flow [2022-07-13 22:03:23,383 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=222, PETRI_DIFFERENCE_MINUEND_FLOW=1550, PETRI_DIFFERENCE_MINUEND_PLACES=287, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=283, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=272, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1602, PETRI_PLACES=296, PETRI_TRANSITIONS=284} [2022-07-13 22:03:23,383 INFO L279 CegarLoopForPetriNet]: 197 programPoint places, 99 predicate places. [2022-07-13 22:03:23,383 INFO L495 AbstractCegarLoop]: Abstraction has has 296 places, 284 transitions, 1602 flow [2022-07-13 22:03:23,383 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 192.0) internal successors, (1152), 6 states have internal predecessors, (1152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:23,384 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:03:23,390 INFO L200 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:03:23,390 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-13 22:03:23,391 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:03:23,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:03:23,391 INFO L85 PathProgramCache]: Analyzing trace with hash -1309811676, now seen corresponding path program 2 times [2022-07-13 22:03:23,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:03:23,391 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [108649181] [2022-07-13 22:03:23,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:03:23,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:03:23,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:03:23,471 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2022-07-13 22:03:23,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:03:23,472 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [108649181] [2022-07-13 22:03:23,472 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [108649181] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:03:23,472 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:03:23,472 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-13 22:03:23,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39073854] [2022-07-13 22:03:23,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:03:23,473 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 22:03:23,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:03:23,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 22:03:23,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-13 22:03:23,475 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 190 out of 222 [2022-07-13 22:03:23,475 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 296 places, 284 transitions, 1602 flow. Second operand has 6 states, 6 states have (on average 192.0) internal successors, (1152), 6 states have internal predecessors, (1152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:23,476 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:03:23,476 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 190 of 222 [2022-07-13 22:03:23,476 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:03:24,266 INFO L129 PetriNetUnfolder]: 931/5551 cut-off events. [2022-07-13 22:03:24,267 INFO L130 PetriNetUnfolder]: For 8187/8352 co-relation queries the response was YES. [2022-07-13 22:03:24,294 INFO L84 FinitePrefix]: Finished finitePrefix Result has 10456 conditions, 5551 events. 931/5551 cut-off events. For 8187/8352 co-relation queries the response was YES. Maximal size of possible extension queue 211. Compared 58997 event pairs, 103 based on Foata normal form. 55/5124 useless extension candidates. Maximal degree in co-relation 10405. Up to 509 conditions per place. [2022-07-13 22:03:24,304 INFO L132 encePairwiseOnDemand]: 211/222 looper letters, 59 selfloop transitions, 27 changer transitions 2/321 dead transitions. [2022-07-13 22:03:24,305 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 299 places, 321 transitions, 1971 flow [2022-07-13 22:03:24,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-13 22:03:24,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-07-13 22:03:24,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1202 transitions. [2022-07-13 22:03:24,306 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9024024024024024 [2022-07-13 22:03:24,307 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1202 transitions. [2022-07-13 22:03:24,307 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1202 transitions. [2022-07-13 22:03:24,307 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:03:24,307 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1202 transitions. [2022-07-13 22:03:24,308 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 200.33333333333334) internal successors, (1202), 6 states have internal predecessors, (1202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:24,310 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 222.0) internal successors, (1554), 7 states have internal predecessors, (1554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:24,310 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 222.0) internal successors, (1554), 7 states have internal predecessors, (1554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:24,310 INFO L186 Difference]: Start difference. First operand has 296 places, 284 transitions, 1602 flow. Second operand 6 states and 1202 transitions. [2022-07-13 22:03:24,310 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 299 places, 321 transitions, 1971 flow [2022-07-13 22:03:24,332 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 295 places, 321 transitions, 1949 flow, removed 2 selfloop flow, removed 4 redundant places. [2022-07-13 22:03:24,335 INFO L242 Difference]: Finished difference. Result has 299 places, 291 transitions, 1764 flow [2022-07-13 22:03:24,335 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=222, PETRI_DIFFERENCE_MINUEND_FLOW=1585, PETRI_DIFFERENCE_MINUEND_PLACES=290, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=284, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=260, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1764, PETRI_PLACES=299, PETRI_TRANSITIONS=291} [2022-07-13 22:03:24,336 INFO L279 CegarLoopForPetriNet]: 197 programPoint places, 102 predicate places. [2022-07-13 22:03:24,336 INFO L495 AbstractCegarLoop]: Abstraction has has 299 places, 291 transitions, 1764 flow [2022-07-13 22:03:24,336 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 192.0) internal successors, (1152), 6 states have internal predecessors, (1152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:24,336 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:03:24,336 INFO L200 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:03:24,337 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-13 22:03:24,337 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:03:24,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:03:24,337 INFO L85 PathProgramCache]: Analyzing trace with hash -1311903992, now seen corresponding path program 3 times [2022-07-13 22:03:24,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:03:24,337 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874079484] [2022-07-13 22:03:24,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:03:24,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:03:24,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:03:24,394 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2022-07-13 22:03:24,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:03:24,394 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [874079484] [2022-07-13 22:03:24,394 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [874079484] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:03:24,395 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:03:24,395 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-13 22:03:24,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292139368] [2022-07-13 22:03:24,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:03:24,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 22:03:24,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:03:24,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 22:03:24,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-13 22:03:24,397 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 190 out of 222 [2022-07-13 22:03:24,397 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 299 places, 291 transitions, 1764 flow. Second operand has 6 states, 6 states have (on average 192.0) internal successors, (1152), 6 states have internal predecessors, (1152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:24,397 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:03:24,397 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 190 of 222 [2022-07-13 22:03:24,398 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:03:25,043 INFO L129 PetriNetUnfolder]: 899/5206 cut-off events. [2022-07-13 22:03:25,044 INFO L130 PetriNetUnfolder]: For 9083/9251 co-relation queries the response was YES. [2022-07-13 22:03:25,079 INFO L84 FinitePrefix]: Finished finitePrefix Result has 10263 conditions, 5206 events. 899/5206 cut-off events. For 9083/9251 co-relation queries the response was YES. Maximal size of possible extension queue 193. Compared 53997 event pairs, 145 based on Foata normal form. 50/4793 useless extension candidates. Maximal degree in co-relation 10210. Up to 509 conditions per place. [2022-07-13 22:03:25,091 INFO L132 encePairwiseOnDemand]: 212/222 looper letters, 56 selfloop transitions, 23 changer transitions 5/317 dead transitions. [2022-07-13 22:03:25,091 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 303 places, 317 transitions, 2049 flow [2022-07-13 22:03:25,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-13 22:03:25,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-07-13 22:03:25,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1194 transitions. [2022-07-13 22:03:25,093 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8963963963963963 [2022-07-13 22:03:25,093 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1194 transitions. [2022-07-13 22:03:25,093 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1194 transitions. [2022-07-13 22:03:25,094 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:03:25,094 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1194 transitions. [2022-07-13 22:03:25,095 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 199.0) internal successors, (1194), 6 states have internal predecessors, (1194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:25,096 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 222.0) internal successors, (1554), 7 states have internal predecessors, (1554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:25,097 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 222.0) internal successors, (1554), 7 states have internal predecessors, (1554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:25,097 INFO L186 Difference]: Start difference. First operand has 299 places, 291 transitions, 1764 flow. Second operand 6 states and 1194 transitions. [2022-07-13 22:03:25,097 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 303 places, 317 transitions, 2049 flow [2022-07-13 22:03:25,125 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 301 places, 317 transitions, 2034 flow, removed 1 selfloop flow, removed 2 redundant places. [2022-07-13 22:03:25,128 INFO L242 Difference]: Finished difference. Result has 304 places, 291 transitions, 1817 flow [2022-07-13 22:03:25,129 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=222, PETRI_DIFFERENCE_MINUEND_FLOW=1749, PETRI_DIFFERENCE_MINUEND_PLACES=296, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=291, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=268, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1817, PETRI_PLACES=304, PETRI_TRANSITIONS=291} [2022-07-13 22:03:25,129 INFO L279 CegarLoopForPetriNet]: 197 programPoint places, 107 predicate places. [2022-07-13 22:03:25,129 INFO L495 AbstractCegarLoop]: Abstraction has has 304 places, 291 transitions, 1817 flow [2022-07-13 22:03:25,129 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 192.0) internal successors, (1152), 6 states have internal predecessors, (1152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:25,130 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:03:25,130 INFO L200 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:03:25,130 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-13 22:03:25,130 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:03:25,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:03:25,130 INFO L85 PathProgramCache]: Analyzing trace with hash 1139579204, now seen corresponding path program 1 times [2022-07-13 22:03:25,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:03:25,131 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1524676430] [2022-07-13 22:03:25,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:03:25,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:03:25,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:03:25,192 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2022-07-13 22:03:25,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:03:25,193 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1524676430] [2022-07-13 22:03:25,193 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1524676430] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:03:25,193 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:03:25,193 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-13 22:03:25,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401219192] [2022-07-13 22:03:25,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:03:25,194 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 22:03:25,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:03:25,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 22:03:25,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-13 22:03:25,195 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 190 out of 222 [2022-07-13 22:03:25,196 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 304 places, 291 transitions, 1817 flow. Second operand has 6 states, 6 states have (on average 192.0) internal successors, (1152), 6 states have internal predecessors, (1152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:25,196 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:03:25,196 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 190 of 222 [2022-07-13 22:03:25,196 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:03:25,893 INFO L129 PetriNetUnfolder]: 921/4700 cut-off events. [2022-07-13 22:03:25,894 INFO L130 PetriNetUnfolder]: For 8728/8854 co-relation queries the response was YES. [2022-07-13 22:03:25,925 INFO L84 FinitePrefix]: Finished finitePrefix Result has 9502 conditions, 4700 events. 921/4700 cut-off events. For 8728/8854 co-relation queries the response was YES. Maximal size of possible extension queue 221. Compared 47431 event pairs, 122 based on Foata normal form. 43/4286 useless extension candidates. Maximal degree in co-relation 9447. Up to 596 conditions per place. [2022-07-13 22:03:25,936 INFO L132 encePairwiseOnDemand]: 214/222 looper letters, 52 selfloop transitions, 24 changer transitions 1/316 dead transitions. [2022-07-13 22:03:25,936 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 307 places, 316 transitions, 2100 flow [2022-07-13 22:03:25,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-13 22:03:25,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-07-13 22:03:25,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1191 transitions. [2022-07-13 22:03:25,938 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8941441441441441 [2022-07-13 22:03:25,938 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1191 transitions. [2022-07-13 22:03:25,938 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1191 transitions. [2022-07-13 22:03:25,938 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:03:25,939 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1191 transitions. [2022-07-13 22:03:25,940 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 198.5) internal successors, (1191), 6 states have internal predecessors, (1191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:25,941 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 222.0) internal successors, (1554), 7 states have internal predecessors, (1554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:25,941 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 222.0) internal successors, (1554), 7 states have internal predecessors, (1554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:25,942 INFO L186 Difference]: Start difference. First operand has 304 places, 291 transitions, 1817 flow. Second operand 6 states and 1191 transitions. [2022-07-13 22:03:25,942 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 307 places, 316 transitions, 2100 flow [2022-07-13 22:03:25,963 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 302 places, 316 transitions, 2042 flow, removed 6 selfloop flow, removed 5 redundant places. [2022-07-13 22:03:25,967 INFO L242 Difference]: Finished difference. Result has 305 places, 294 transitions, 1870 flow [2022-07-13 22:03:25,967 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=222, PETRI_DIFFERENCE_MINUEND_FLOW=1759, PETRI_DIFFERENCE_MINUEND_PLACES=297, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=291, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=268, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1870, PETRI_PLACES=305, PETRI_TRANSITIONS=294} [2022-07-13 22:03:25,967 INFO L279 CegarLoopForPetriNet]: 197 programPoint places, 108 predicate places. [2022-07-13 22:03:25,967 INFO L495 AbstractCegarLoop]: Abstraction has has 305 places, 294 transitions, 1870 flow [2022-07-13 22:03:25,968 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 192.0) internal successors, (1152), 6 states have internal predecessors, (1152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:25,968 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:03:25,968 INFO L200 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:03:25,968 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-13 22:03:25,968 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:03:25,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:03:25,969 INFO L85 PathProgramCache]: Analyzing trace with hash 551726720, now seen corresponding path program 2 times [2022-07-13 22:03:25,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:03:25,969 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [454763171] [2022-07-13 22:03:25,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:03:25,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:03:25,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:03:26,017 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2022-07-13 22:03:26,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:03:26,018 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [454763171] [2022-07-13 22:03:26,018 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [454763171] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:03:26,018 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:03:26,018 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-13 22:03:26,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263540104] [2022-07-13 22:03:26,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:03:26,019 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 22:03:26,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:03:26,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 22:03:26,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-13 22:03:26,020 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 190 out of 222 [2022-07-13 22:03:26,020 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 305 places, 294 transitions, 1870 flow. Second operand has 6 states, 6 states have (on average 192.0) internal successors, (1152), 6 states have internal predecessors, (1152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:26,021 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:03:26,021 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 190 of 222 [2022-07-13 22:03:26,021 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:03:26,670 INFO L129 PetriNetUnfolder]: 910/4864 cut-off events. [2022-07-13 22:03:26,670 INFO L130 PetriNetUnfolder]: For 10201/10319 co-relation queries the response was YES. [2022-07-13 22:03:26,703 INFO L84 FinitePrefix]: Finished finitePrefix Result has 10035 conditions, 4864 events. 910/4864 cut-off events. For 10201/10319 co-relation queries the response was YES. Maximal size of possible extension queue 223. Compared 49884 event pairs, 133 based on Foata normal form. 27/4416 useless extension candidates. Maximal degree in co-relation 9979. Up to 662 conditions per place. [2022-07-13 22:03:26,715 INFO L132 encePairwiseOnDemand]: 214/222 looper letters, 60 selfloop transitions, 13 changer transitions 3/315 dead transitions. [2022-07-13 22:03:26,715 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 309 places, 315 transitions, 2162 flow [2022-07-13 22:03:26,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-13 22:03:26,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-07-13 22:03:26,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1182 transitions. [2022-07-13 22:03:26,717 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8873873873873874 [2022-07-13 22:03:26,717 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1182 transitions. [2022-07-13 22:03:26,717 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1182 transitions. [2022-07-13 22:03:26,718 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:03:26,718 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1182 transitions. [2022-07-13 22:03:26,719 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 197.0) internal successors, (1182), 6 states have internal predecessors, (1182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:26,720 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 222.0) internal successors, (1554), 7 states have internal predecessors, (1554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:26,721 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 222.0) internal successors, (1554), 7 states have internal predecessors, (1554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:26,721 INFO L186 Difference]: Start difference. First operand has 305 places, 294 transitions, 1870 flow. Second operand 6 states and 1182 transitions. [2022-07-13 22:03:26,721 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 309 places, 315 transitions, 2162 flow [2022-07-13 22:03:26,747 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 306 places, 315 transitions, 2133 flow, removed 2 selfloop flow, removed 3 redundant places. [2022-07-13 22:03:26,750 INFO L242 Difference]: Finished difference. Result has 310 places, 295 transitions, 1906 flow [2022-07-13 22:03:26,750 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=222, PETRI_DIFFERENCE_MINUEND_FLOW=1844, PETRI_DIFFERENCE_MINUEND_PLACES=301, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=294, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=281, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1906, PETRI_PLACES=310, PETRI_TRANSITIONS=295} [2022-07-13 22:03:26,750 INFO L279 CegarLoopForPetriNet]: 197 programPoint places, 113 predicate places. [2022-07-13 22:03:26,751 INFO L495 AbstractCegarLoop]: Abstraction has has 310 places, 295 transitions, 1906 flow [2022-07-13 22:03:26,751 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 192.0) internal successors, (1152), 6 states have internal predecessors, (1152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:26,751 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:03:26,751 INFO L200 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:03:26,751 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-13 22:03:26,752 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:03:26,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:03:26,752 INFO L85 PathProgramCache]: Analyzing trace with hash -2024842678, now seen corresponding path program 3 times [2022-07-13 22:03:26,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:03:26,752 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [648808715] [2022-07-13 22:03:26,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:03:26,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:03:26,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:03:26,806 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2022-07-13 22:03:26,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:03:26,807 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [648808715] [2022-07-13 22:03:26,807 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [648808715] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:03:26,807 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:03:26,807 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-13 22:03:26,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067431944] [2022-07-13 22:03:26,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:03:26,808 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 22:03:26,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:03:26,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 22:03:26,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-13 22:03:26,809 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 190 out of 222 [2022-07-13 22:03:26,810 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 310 places, 295 transitions, 1906 flow. Second operand has 6 states, 6 states have (on average 192.0) internal successors, (1152), 6 states have internal predecessors, (1152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:26,810 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:03:26,810 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 190 of 222 [2022-07-13 22:03:26,811 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:03:27,459 INFO L129 PetriNetUnfolder]: 895/4656 cut-off events. [2022-07-13 22:03:27,460 INFO L130 PetriNetUnfolder]: For 10414/10538 co-relation queries the response was YES. [2022-07-13 22:03:27,493 INFO L84 FinitePrefix]: Finished finitePrefix Result has 9772 conditions, 4656 events. 895/4656 cut-off events. For 10414/10538 co-relation queries the response was YES. Maximal size of possible extension queue 216. Compared 46983 event pairs, 132 based on Foata normal form. 39/4243 useless extension candidates. Maximal degree in co-relation 9713. Up to 621 conditions per place. [2022-07-13 22:03:27,504 INFO L132 encePairwiseOnDemand]: 213/222 looper letters, 49 selfloop transitions, 20 changer transitions 4/312 dead transitions. [2022-07-13 22:03:27,504 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 313 places, 312 transitions, 2148 flow [2022-07-13 22:03:27,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-13 22:03:27,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-07-13 22:03:27,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1183 transitions. [2022-07-13 22:03:27,506 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8881381381381381 [2022-07-13 22:03:27,506 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1183 transitions. [2022-07-13 22:03:27,506 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1183 transitions. [2022-07-13 22:03:27,506 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:03:27,507 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1183 transitions. [2022-07-13 22:03:27,508 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 197.16666666666666) internal successors, (1183), 6 states have internal predecessors, (1183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:27,509 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 222.0) internal successors, (1554), 7 states have internal predecessors, (1554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:27,509 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 222.0) internal successors, (1554), 7 states have internal predecessors, (1554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:27,509 INFO L186 Difference]: Start difference. First operand has 310 places, 295 transitions, 1906 flow. Second operand 6 states and 1183 transitions. [2022-07-13 22:03:27,509 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 313 places, 312 transitions, 2148 flow [2022-07-13 22:03:27,533 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 309 places, 312 transitions, 2122 flow, removed 5 selfloop flow, removed 4 redundant places. [2022-07-13 22:03:27,536 INFO L242 Difference]: Finished difference. Result has 311 places, 294 transitions, 1910 flow [2022-07-13 22:03:27,536 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=222, PETRI_DIFFERENCE_MINUEND_FLOW=1883, PETRI_DIFFERENCE_MINUEND_PLACES=304, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=295, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=275, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1910, PETRI_PLACES=311, PETRI_TRANSITIONS=294} [2022-07-13 22:03:27,536 INFO L279 CegarLoopForPetriNet]: 197 programPoint places, 114 predicate places. [2022-07-13 22:03:27,536 INFO L495 AbstractCegarLoop]: Abstraction has has 311 places, 294 transitions, 1910 flow [2022-07-13 22:03:27,537 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 192.0) internal successors, (1152), 6 states have internal predecessors, (1152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:27,537 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:03:27,537 INFO L200 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:03:27,537 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-07-13 22:03:27,537 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:03:27,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:03:27,538 INFO L85 PathProgramCache]: Analyzing trace with hash -1667159910, now seen corresponding path program 4 times [2022-07-13 22:03:27,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:03:27,538 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [861995051] [2022-07-13 22:03:27,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:03:27,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:03:27,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:03:27,612 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2022-07-13 22:03:27,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:03:27,613 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [861995051] [2022-07-13 22:03:27,613 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [861995051] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:03:27,613 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:03:27,613 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-13 22:03:27,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725258430] [2022-07-13 22:03:27,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:03:27,615 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 22:03:27,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:03:27,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 22:03:27,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-13 22:03:27,616 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 190 out of 222 [2022-07-13 22:03:27,617 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 311 places, 294 transitions, 1910 flow. Second operand has 6 states, 6 states have (on average 192.0) internal successors, (1152), 6 states have internal predecessors, (1152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:27,617 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:03:27,617 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 190 of 222 [2022-07-13 22:03:27,617 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:03:28,317 INFO L129 PetriNetUnfolder]: 860/5033 cut-off events. [2022-07-13 22:03:28,317 INFO L130 PetriNetUnfolder]: For 11341/11516 co-relation queries the response was YES. [2022-07-13 22:03:28,341 INFO L84 FinitePrefix]: Finished finitePrefix Result has 10271 conditions, 5033 events. 860/5033 cut-off events. For 11341/11516 co-relation queries the response was YES. Maximal size of possible extension queue 192. Compared 51583 event pairs, 209 based on Foata normal form. 41/4640 useless extension candidates. Maximal degree in co-relation 10212. Up to 830 conditions per place. [2022-07-13 22:03:28,352 INFO L132 encePairwiseOnDemand]: 214/222 looper letters, 66 selfloop transitions, 16 changer transitions 4/322 dead transitions. [2022-07-13 22:03:28,352 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 314 places, 322 transitions, 2231 flow [2022-07-13 22:03:28,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-13 22:03:28,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-07-13 22:03:28,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1191 transitions. [2022-07-13 22:03:28,354 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8941441441441441 [2022-07-13 22:03:28,354 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1191 transitions. [2022-07-13 22:03:28,354 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1191 transitions. [2022-07-13 22:03:28,355 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:03:28,355 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1191 transitions. [2022-07-13 22:03:28,356 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 198.5) internal successors, (1191), 6 states have internal predecessors, (1191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:28,357 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 222.0) internal successors, (1554), 7 states have internal predecessors, (1554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:28,357 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 222.0) internal successors, (1554), 7 states have internal predecessors, (1554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:28,358 INFO L186 Difference]: Start difference. First operand has 311 places, 294 transitions, 1910 flow. Second operand 6 states and 1191 transitions. [2022-07-13 22:03:28,358 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 314 places, 322 transitions, 2231 flow [2022-07-13 22:03:28,387 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 306 places, 322 transitions, 2156 flow, removed 8 selfloop flow, removed 8 redundant places. [2022-07-13 22:03:28,390 INFO L242 Difference]: Finished difference. Result has 308 places, 294 transitions, 1872 flow [2022-07-13 22:03:28,390 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=222, PETRI_DIFFERENCE_MINUEND_FLOW=1835, PETRI_DIFFERENCE_MINUEND_PLACES=301, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=294, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=278, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1872, PETRI_PLACES=308, PETRI_TRANSITIONS=294} [2022-07-13 22:03:28,391 INFO L279 CegarLoopForPetriNet]: 197 programPoint places, 111 predicate places. [2022-07-13 22:03:28,391 INFO L495 AbstractCegarLoop]: Abstraction has has 308 places, 294 transitions, 1872 flow [2022-07-13 22:03:28,391 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 192.0) internal successors, (1152), 6 states have internal predecessors, (1152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:28,391 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:03:28,392 INFO L200 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:03:28,392 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-07-13 22:03:28,392 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:03:28,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:03:28,392 INFO L85 PathProgramCache]: Analyzing trace with hash -1828288132, now seen corresponding path program 5 times [2022-07-13 22:03:28,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:03:28,393 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [848621278] [2022-07-13 22:03:28,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:03:28,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:03:28,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:03:28,463 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2022-07-13 22:03:28,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:03:28,463 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [848621278] [2022-07-13 22:03:28,463 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [848621278] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:03:28,463 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:03:28,463 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-13 22:03:28,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143311538] [2022-07-13 22:03:28,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:03:28,464 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 22:03:28,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:03:28,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 22:03:28,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-13 22:03:28,466 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 190 out of 222 [2022-07-13 22:03:28,467 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 308 places, 294 transitions, 1872 flow. Second operand has 6 states, 6 states have (on average 192.0) internal successors, (1152), 6 states have internal predecessors, (1152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:28,467 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:03:28,467 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 190 of 222 [2022-07-13 22:03:28,467 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:03:29,185 INFO L129 PetriNetUnfolder]: 843/4837 cut-off events. [2022-07-13 22:03:29,185 INFO L130 PetriNetUnfolder]: For 9543/9697 co-relation queries the response was YES. [2022-07-13 22:03:29,219 INFO L84 FinitePrefix]: Finished finitePrefix Result has 9775 conditions, 4837 events. 843/4837 cut-off events. For 9543/9697 co-relation queries the response was YES. Maximal size of possible extension queue 189. Compared 48991 event pairs, 199 based on Foata normal form. 43/4463 useless extension candidates. Maximal degree in co-relation 9718. Up to 830 conditions per place. [2022-07-13 22:03:29,230 INFO L132 encePairwiseOnDemand]: 213/222 looper letters, 63 selfloop transitions, 22 changer transitions 2/323 dead transitions. [2022-07-13 22:03:29,230 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 312 places, 323 transitions, 2170 flow [2022-07-13 22:03:29,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-13 22:03:29,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-07-13 22:03:29,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1199 transitions. [2022-07-13 22:03:29,232 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9001501501501501 [2022-07-13 22:03:29,232 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1199 transitions. [2022-07-13 22:03:29,232 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1199 transitions. [2022-07-13 22:03:29,233 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:03:29,233 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1199 transitions. [2022-07-13 22:03:29,234 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 199.83333333333334) internal successors, (1199), 6 states have internal predecessors, (1199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:29,235 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 222.0) internal successors, (1554), 7 states have internal predecessors, (1554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:29,235 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 222.0) internal successors, (1554), 7 states have internal predecessors, (1554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:29,236 INFO L186 Difference]: Start difference. First operand has 308 places, 294 transitions, 1872 flow. Second operand 6 states and 1199 transitions. [2022-07-13 22:03:29,236 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 312 places, 323 transitions, 2170 flow [2022-07-13 22:03:29,265 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 307 places, 323 transitions, 2122 flow, removed 4 selfloop flow, removed 5 redundant places. [2022-07-13 22:03:29,268 INFO L242 Difference]: Finished difference. Result has 310 places, 296 transitions, 1924 flow [2022-07-13 22:03:29,268 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=222, PETRI_DIFFERENCE_MINUEND_FLOW=1828, PETRI_DIFFERENCE_MINUEND_PLACES=302, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=294, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=272, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1924, PETRI_PLACES=310, PETRI_TRANSITIONS=296} [2022-07-13 22:03:29,269 INFO L279 CegarLoopForPetriNet]: 197 programPoint places, 113 predicate places. [2022-07-13 22:03:29,269 INFO L495 AbstractCegarLoop]: Abstraction has has 310 places, 296 transitions, 1924 flow [2022-07-13 22:03:29,269 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 192.0) internal successors, (1152), 6 states have internal predecessors, (1152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:29,269 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:03:29,270 INFO L200 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:03:29,270 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-07-13 22:03:29,270 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:03:29,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:03:29,270 INFO L85 PathProgramCache]: Analyzing trace with hash -1434153486, now seen corresponding path program 6 times [2022-07-13 22:03:29,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:03:29,271 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [624296613] [2022-07-13 22:03:29,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:03:29,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:03:29,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:03:29,334 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2022-07-13 22:03:29,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:03:29,334 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [624296613] [2022-07-13 22:03:29,335 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [624296613] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:03:29,335 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:03:29,335 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-13 22:03:29,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212443260] [2022-07-13 22:03:29,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:03:29,335 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 22:03:29,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:03:29,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 22:03:29,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-13 22:03:29,337 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 190 out of 222 [2022-07-13 22:03:29,338 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 310 places, 296 transitions, 1924 flow. Second operand has 6 states, 6 states have (on average 192.0) internal successors, (1152), 6 states have internal predecessors, (1152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:29,338 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:03:29,338 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 190 of 222 [2022-07-13 22:03:29,338 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:03:30,072 INFO L129 PetriNetUnfolder]: 828/4698 cut-off events. [2022-07-13 22:03:30,073 INFO L130 PetriNetUnfolder]: For 9511/9662 co-relation queries the response was YES. [2022-07-13 22:03:30,107 INFO L84 FinitePrefix]: Finished finitePrefix Result has 9658 conditions, 4698 events. 828/4698 cut-off events. For 9511/9662 co-relation queries the response was YES. Maximal size of possible extension queue 187. Compared 47325 event pairs, 141 based on Foata normal form. 43/4352 useless extension candidates. Maximal degree in co-relation 9600. Up to 699 conditions per place. [2022-07-13 22:03:30,118 INFO L132 encePairwiseOnDemand]: 213/222 looper letters, 59 selfloop transitions, 24 changer transitions 3/322 dead transitions. [2022-07-13 22:03:30,118 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 314 places, 322 transitions, 2197 flow [2022-07-13 22:03:30,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-13 22:03:30,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-07-13 22:03:30,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1196 transitions. [2022-07-13 22:03:30,120 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8978978978978979 [2022-07-13 22:03:30,120 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1196 transitions. [2022-07-13 22:03:30,121 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1196 transitions. [2022-07-13 22:03:30,121 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:03:30,121 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1196 transitions. [2022-07-13 22:03:30,122 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 199.33333333333334) internal successors, (1196), 6 states have internal predecessors, (1196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:30,123 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 222.0) internal successors, (1554), 7 states have internal predecessors, (1554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:30,124 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 222.0) internal successors, (1554), 7 states have internal predecessors, (1554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:30,124 INFO L186 Difference]: Start difference. First operand has 310 places, 296 transitions, 1924 flow. Second operand 6 states and 1196 transitions. [2022-07-13 22:03:30,124 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 314 places, 322 transitions, 2197 flow [2022-07-13 22:03:30,159 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 311 places, 322 transitions, 2166 flow, removed 4 selfloop flow, removed 3 redundant places. [2022-07-13 22:03:30,162 INFO L242 Difference]: Finished difference. Result has 312 places, 295 transitions, 1927 flow [2022-07-13 22:03:30,162 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=222, PETRI_DIFFERENCE_MINUEND_FLOW=1897, PETRI_DIFFERENCE_MINUEND_PLACES=306, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=296, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=272, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1927, PETRI_PLACES=312, PETRI_TRANSITIONS=295} [2022-07-13 22:03:30,162 INFO L279 CegarLoopForPetriNet]: 197 programPoint places, 115 predicate places. [2022-07-13 22:03:30,163 INFO L495 AbstractCegarLoop]: Abstraction has has 312 places, 295 transitions, 1927 flow [2022-07-13 22:03:30,163 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 192.0) internal successors, (1152), 6 states have internal predecessors, (1152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:30,163 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:03:30,163 INFO L200 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:03:30,163 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-07-13 22:03:30,164 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:03:30,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:03:30,164 INFO L85 PathProgramCache]: Analyzing trace with hash -458541530, now seen corresponding path program 1 times [2022-07-13 22:03:30,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:03:30,164 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1920392428] [2022-07-13 22:03:30,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:03:30,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:03:30,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:03:30,451 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2022-07-13 22:03:30,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:03:30,451 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1920392428] [2022-07-13 22:03:30,451 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1920392428] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:03:30,451 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:03:30,452 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-07-13 22:03:30,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719146520] [2022-07-13 22:03:30,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:03:30,452 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-07-13 22:03:30,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:03:30,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-07-13 22:03:30,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=285, Unknown=0, NotChecked=0, Total=342 [2022-07-13 22:03:30,455 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 222 [2022-07-13 22:03:30,457 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 312 places, 295 transitions, 1927 flow. Second operand has 19 states, 19 states have (on average 153.47368421052633) internal successors, (2916), 19 states have internal predecessors, (2916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:30,457 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:03:30,457 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 222 [2022-07-13 22:03:30,457 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:03:36,623 INFO L129 PetriNetUnfolder]: 14111/37252 cut-off events. [2022-07-13 22:03:36,623 INFO L130 PetriNetUnfolder]: For 75199/75319 co-relation queries the response was YES. [2022-07-13 22:03:36,928 INFO L84 FinitePrefix]: Finished finitePrefix Result has 81343 conditions, 37252 events. 14111/37252 cut-off events. For 75199/75319 co-relation queries the response was YES. Maximal size of possible extension queue 1282. Compared 449104 event pairs, 4300 based on Foata normal form. 35/33847 useless extension candidates. Maximal degree in co-relation 81285. Up to 6886 conditions per place. [2022-07-13 22:03:37,019 INFO L132 encePairwiseOnDemand]: 194/222 looper letters, 276 selfloop transitions, 81 changer transitions 0/551 dead transitions. [2022-07-13 22:03:37,019 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 332 places, 551 transitions, 4212 flow [2022-07-13 22:03:37,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-07-13 22:03:37,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2022-07-13 22:03:37,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 3740 transitions. [2022-07-13 22:03:37,022 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7324716020368194 [2022-07-13 22:03:37,022 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 3740 transitions. [2022-07-13 22:03:37,022 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 3740 transitions. [2022-07-13 22:03:37,023 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:03:37,023 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 3740 transitions. [2022-07-13 22:03:37,026 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 162.6086956521739) internal successors, (3740), 23 states have internal predecessors, (3740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:37,030 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 222.0) internal successors, (5328), 24 states have internal predecessors, (5328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:37,030 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 222.0) internal successors, (5328), 24 states have internal predecessors, (5328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:37,030 INFO L186 Difference]: Start difference. First operand has 312 places, 295 transitions, 1927 flow. Second operand 23 states and 3740 transitions. [2022-07-13 22:03:37,030 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 332 places, 551 transitions, 4212 flow [2022-07-13 22:03:37,168 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 324 places, 551 transitions, 4122 flow, removed 2 selfloop flow, removed 8 redundant places. [2022-07-13 22:03:37,173 INFO L242 Difference]: Finished difference. Result has 337 places, 347 transitions, 2748 flow [2022-07-13 22:03:37,173 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=222, PETRI_DIFFERENCE_MINUEND_FLOW=1852, PETRI_DIFFERENCE_MINUEND_PLACES=302, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=295, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=251, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=2748, PETRI_PLACES=337, PETRI_TRANSITIONS=347} [2022-07-13 22:03:37,174 INFO L279 CegarLoopForPetriNet]: 197 programPoint places, 140 predicate places. [2022-07-13 22:03:37,174 INFO L495 AbstractCegarLoop]: Abstraction has has 337 places, 347 transitions, 2748 flow [2022-07-13 22:03:37,174 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 153.47368421052633) internal successors, (2916), 19 states have internal predecessors, (2916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:37,175 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:03:37,175 INFO L200 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:03:37,175 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-07-13 22:03:37,175 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:03:37,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:03:37,176 INFO L85 PathProgramCache]: Analyzing trace with hash -1248568524, now seen corresponding path program 2 times [2022-07-13 22:03:37,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:03:37,176 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124375731] [2022-07-13 22:03:37,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:03:37,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:03:37,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:03:37,426 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2022-07-13 22:03:37,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:03:37,427 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1124375731] [2022-07-13 22:03:37,427 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1124375731] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:03:37,427 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:03:37,427 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-07-13 22:03:37,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456899445] [2022-07-13 22:03:37,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:03:37,427 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-07-13 22:03:37,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:03:37,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-07-13 22:03:37,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=286, Unknown=0, NotChecked=0, Total=342 [2022-07-13 22:03:37,429 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 222 [2022-07-13 22:03:37,430 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 337 places, 347 transitions, 2748 flow. Second operand has 19 states, 19 states have (on average 153.47368421052633) internal successors, (2916), 19 states have internal predecessors, (2916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:37,431 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:03:37,431 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 222 [2022-07-13 22:03:37,431 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:03:46,148 INFO L129 PetriNetUnfolder]: 18134/47926 cut-off events. [2022-07-13 22:03:46,148 INFO L130 PetriNetUnfolder]: For 136420/136587 co-relation queries the response was YES. [2022-07-13 22:03:46,733 INFO L84 FinitePrefix]: Finished finitePrefix Result has 124699 conditions, 47926 events. 18134/47926 cut-off events. For 136420/136587 co-relation queries the response was YES. Maximal size of possible extension queue 1606. Compared 601724 event pairs, 4026 based on Foata normal form. 79/45238 useless extension candidates. Maximal degree in co-relation 124631. Up to 7484 conditions per place. [2022-07-13 22:03:46,886 INFO L132 encePairwiseOnDemand]: 193/222 looper letters, 349 selfloop transitions, 85 changer transitions 0/628 dead transitions. [2022-07-13 22:03:46,886 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 361 places, 628 transitions, 5734 flow [2022-07-13 22:03:46,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-07-13 22:03:46,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2022-07-13 22:03:46,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 4076 transitions. [2022-07-13 22:03:46,890 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7344144144144145 [2022-07-13 22:03:46,890 INFO L72 ComplementDD]: Start complementDD. Operand 25 states and 4076 transitions. [2022-07-13 22:03:46,890 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 4076 transitions. [2022-07-13 22:03:46,892 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:03:46,892 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 25 states and 4076 transitions. [2022-07-13 22:03:46,896 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 26 states, 25 states have (on average 163.04) internal successors, (4076), 25 states have internal predecessors, (4076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:46,899 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 26 states, 26 states have (on average 222.0) internal successors, (5772), 26 states have internal predecessors, (5772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:46,900 INFO L81 ComplementDD]: Finished complementDD. Result has 26 states, 26 states have (on average 222.0) internal successors, (5772), 26 states have internal predecessors, (5772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:46,900 INFO L186 Difference]: Start difference. First operand has 337 places, 347 transitions, 2748 flow. Second operand 25 states and 4076 transitions. [2022-07-13 22:03:46,900 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 361 places, 628 transitions, 5734 flow [2022-07-13 22:03:47,400 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 353 places, 628 transitions, 5629 flow, removed 40 selfloop flow, removed 8 redundant places. [2022-07-13 22:03:47,408 INFO L242 Difference]: Finished difference. Result has 368 places, 391 transitions, 3521 flow [2022-07-13 22:03:47,409 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=222, PETRI_DIFFERENCE_MINUEND_FLOW=2683, PETRI_DIFFERENCE_MINUEND_PLACES=329, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=347, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=293, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=3521, PETRI_PLACES=368, PETRI_TRANSITIONS=391} [2022-07-13 22:03:47,410 INFO L279 CegarLoopForPetriNet]: 197 programPoint places, 171 predicate places. [2022-07-13 22:03:47,410 INFO L495 AbstractCegarLoop]: Abstraction has has 368 places, 391 transitions, 3521 flow [2022-07-13 22:03:47,411 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 153.47368421052633) internal successors, (2916), 19 states have internal predecessors, (2916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:47,411 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:03:47,411 INFO L200 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:03:47,411 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-07-13 22:03:47,412 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:03:47,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:03:47,413 INFO L85 PathProgramCache]: Analyzing trace with hash -60582770, now seen corresponding path program 3 times [2022-07-13 22:03:47,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:03:47,413 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526424369] [2022-07-13 22:03:47,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:03:47,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:03:47,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:03:47,664 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2022-07-13 22:03:47,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:03:47,664 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1526424369] [2022-07-13 22:03:47,664 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1526424369] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:03:47,664 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:03:47,665 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-07-13 22:03:47,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964016419] [2022-07-13 22:03:47,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:03:47,665 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-07-13 22:03:47,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:03:47,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-07-13 22:03:47,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=285, Unknown=0, NotChecked=0, Total=342 [2022-07-13 22:03:47,667 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 222 [2022-07-13 22:03:47,668 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 368 places, 391 transitions, 3521 flow. Second operand has 19 states, 19 states have (on average 153.47368421052633) internal successors, (2916), 19 states have internal predecessors, (2916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:47,668 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:03:47,668 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 222 [2022-07-13 22:03:47,668 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:03:58,163 INFO L129 PetriNetUnfolder]: 19685/50127 cut-off events. [2022-07-13 22:03:58,164 INFO L130 PetriNetUnfolder]: For 234935/235172 co-relation queries the response was YES. [2022-07-13 22:03:59,145 INFO L84 FinitePrefix]: Finished finitePrefix Result has 150952 conditions, 50127 events. 19685/50127 cut-off events. For 234935/235172 co-relation queries the response was YES. Maximal size of possible extension queue 1787. Compared 622660 event pairs, 8485 based on Foata normal form. 102/46760 useless extension candidates. Maximal degree in co-relation 150869. Up to 13045 conditions per place. [2022-07-13 22:03:59,316 INFO L132 encePairwiseOnDemand]: 193/222 looper letters, 314 selfloop transitions, 94 changer transitions 0/602 dead transitions. [2022-07-13 22:03:59,316 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 390 places, 602 transitions, 5951 flow [2022-07-13 22:03:59,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-07-13 22:03:59,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2022-07-13 22:03:59,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 3741 transitions. [2022-07-13 22:03:59,319 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7326674500587544 [2022-07-13 22:03:59,319 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 3741 transitions. [2022-07-13 22:03:59,319 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 3741 transitions. [2022-07-13 22:03:59,320 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:03:59,320 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 3741 transitions. [2022-07-13 22:03:59,323 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 162.65217391304347) internal successors, (3741), 23 states have internal predecessors, (3741), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:59,326 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 222.0) internal successors, (5328), 24 states have internal predecessors, (5328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:59,327 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 222.0) internal successors, (5328), 24 states have internal predecessors, (5328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:59,327 INFO L186 Difference]: Start difference. First operand has 368 places, 391 transitions, 3521 flow. Second operand 23 states and 3741 transitions. [2022-07-13 22:03:59,327 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 390 places, 602 transitions, 5951 flow [2022-07-13 22:03:59,983 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 382 places, 602 transitions, 5830 flow, removed 48 selfloop flow, removed 8 redundant places. [2022-07-13 22:03:59,990 INFO L242 Difference]: Finished difference. Result has 394 places, 419 transitions, 4158 flow [2022-07-13 22:03:59,990 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=222, PETRI_DIFFERENCE_MINUEND_FLOW=3416, PETRI_DIFFERENCE_MINUEND_PLACES=360, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=391, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=317, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=4158, PETRI_PLACES=394, PETRI_TRANSITIONS=419} [2022-07-13 22:03:59,991 INFO L279 CegarLoopForPetriNet]: 197 programPoint places, 197 predicate places. [2022-07-13 22:03:59,991 INFO L495 AbstractCegarLoop]: Abstraction has has 394 places, 419 transitions, 4158 flow [2022-07-13 22:03:59,991 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 153.47368421052633) internal successors, (2916), 19 states have internal predecessors, (2916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:59,991 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:03:59,992 INFO L200 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:03:59,992 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-07-13 22:03:59,992 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:03:59,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:03:59,992 INFO L85 PathProgramCache]: Analyzing trace with hash 1084506938, now seen corresponding path program 4 times [2022-07-13 22:03:59,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:03:59,994 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425954482] [2022-07-13 22:03:59,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:03:59,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:04:00,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:04:00,261 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2022-07-13 22:04:00,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:04:00,262 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425954482] [2022-07-13 22:04:00,262 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [425954482] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:04:00,262 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:04:00,262 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-07-13 22:04:00,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520837881] [2022-07-13 22:04:00,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:04:00,262 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-07-13 22:04:00,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:04:00,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-07-13 22:04:00,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=286, Unknown=0, NotChecked=0, Total=342 [2022-07-13 22:04:00,264 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 222 [2022-07-13 22:04:00,265 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 394 places, 419 transitions, 4158 flow. Second operand has 19 states, 19 states have (on average 153.47368421052633) internal successors, (2916), 19 states have internal predecessors, (2916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:00,265 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:04:00,266 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 222 [2022-07-13 22:04:00,266 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand