./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/chl-chromosome-symm.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 35987657 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-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 c7fdb1595c27c144c3bf111946260cb3946663200a2d53f7fba5455031291c4f --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-21 08:58:04,102 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 08:58:04,104 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 08:58:04,145 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 08:58:04,145 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 08:58:04,147 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 08:58:04,152 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 08:58:04,155 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 08:58:04,157 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 08:58:04,163 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-21 08:58:04,165 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-21 08:58:04,170 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 08:58:04,171 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 08:58:04,173 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 08:58:04,175 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 08:58:04,179 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 08:58:04,180 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 08:58:04,182 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 08:58:04,184 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 08:58:04,189 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 08:58:04,191 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 08:58:04,192 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 08:58:04,194 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 08:58:04,195 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 08:58:04,196 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 08:58:04,201 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 08:58:04,201 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 08:58:04,201 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 08:58:04,202 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 08:58:04,202 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 08:58:04,203 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 08:58:04,203 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 08:58:04,205 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 08:58:04,205 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 08:58:04,207 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 08:58:04,208 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 08:58:04,208 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 08:58:04,209 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 08:58:04,209 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 08:58:04,209 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 08:58:04,210 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 08:58:04,211 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 08:58:04,212 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-21 08:58:04,248 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 08:58:04,249 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 08:58:04,249 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 08:58:04,249 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 08:58:04,250 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 08:58:04,250 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 08:58:04,251 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 08:58:04,251 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 08:58:04,251 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 08:58:04,252 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 08:58:04,252 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-21 08:58:04,253 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-21 08:58:04,253 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-21 08:58:04,253 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 08:58:04,253 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-21 08:58:04,253 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 08:58:04,253 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-21 08:58:04,254 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-21 08:58:04,254 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-21 08:58:04,254 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 08:58:04,254 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-21 08:58:04,255 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 08:58:04,255 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 08:58:04,255 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 08:58:04,255 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 08:58:04,255 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 08:58:04,256 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 08:58:04,256 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-21 08:58:04,256 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-21 08:58:04,256 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-21 08:58:04,257 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-21 08:58:04,257 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-21 08:58:04,257 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-21 08:58:04,257 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c7fdb1595c27c144c3bf111946260cb3946663200a2d53f7fba5455031291c4f [2022-07-21 08:58:04,587 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 08:58:04,619 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 08:58:04,621 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 08:58:04,622 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 08:58:04,623 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 08:58:04,625 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/chl-chromosome-symm.wvr.c [2022-07-21 08:58:04,685 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/343fe57c4/1d8a0c94b1cf4963a836d793056f948f/FLAG7c8807097 [2022-07-21 08:58:05,158 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 08:58:05,159 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-chromosome-symm.wvr.c [2022-07-21 08:58:05,169 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/343fe57c4/1d8a0c94b1cf4963a836d793056f948f/FLAG7c8807097 [2022-07-21 08:58:05,658 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/343fe57c4/1d8a0c94b1cf4963a836d793056f948f [2022-07-21 08:58:05,661 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 08:58:05,663 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 08:58:05,664 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 08:58:05,664 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 08:58:05,666 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 08:58:05,667 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 08:58:05" (1/1) ... [2022-07-21 08:58:05,668 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c25fb0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:58:05, skipping insertion in model container [2022-07-21 08:58:05,669 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 08:58:05" (1/1) ... [2022-07-21 08:58:05,674 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 08:58:05,698 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 08:58:05,823 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-symm.wvr.c[2695,2708] [2022-07-21 08:58:05,845 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 08:58:05,875 INFO L203 MainTranslator]: Completed pre-run [2022-07-21 08:58:05,894 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-symm.wvr.c[2695,2708] [2022-07-21 08:58:05,898 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 08:58:05,910 INFO L208 MainTranslator]: Completed translation [2022-07-21 08:58:05,911 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:58:05 WrapperNode [2022-07-21 08:58:05,911 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-21 08:58:05,912 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-21 08:58:05,912 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-21 08:58:05,912 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-21 08:58:05,917 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:58:05" (1/1) ... [2022-07-21 08:58:05,923 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:58:05" (1/1) ... [2022-07-21 08:58:05,970 INFO L137 Inliner]: procedures = 25, calls = 37, calls flagged for inlining = 15, calls inlined = 19, statements flattened = 202 [2022-07-21 08:58:05,970 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-21 08:58:05,971 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-21 08:58:05,971 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-21 08:58:05,971 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-21 08:58:05,980 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:58:05" (1/1) ... [2022-07-21 08:58:05,980 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:58:05" (1/1) ... [2022-07-21 08:58:05,995 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:58:05" (1/1) ... [2022-07-21 08:58:06,001 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:58:05" (1/1) ... [2022-07-21 08:58:06,008 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:58:05" (1/1) ... [2022-07-21 08:58:06,022 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:58:05" (1/1) ... [2022-07-21 08:58:06,026 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:58:05" (1/1) ... [2022-07-21 08:58:06,041 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-21 08:58:06,043 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-21 08:58:06,043 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-21 08:58:06,043 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-21 08:58:06,044 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:58:05" (1/1) ... [2022-07-21 08:58:06,051 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 08:58:06,062 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 08:58:06,080 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) [2022-07-21 08:58:06,099 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 [2022-07-21 08:58:06,118 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-21 08:58:06,118 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-21 08:58:06,118 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-21 08:58:06,118 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-21 08:58:06,118 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-07-21 08:58:06,119 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-07-21 08:58:06,119 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-07-21 08:58:06,119 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-07-21 08:58:06,119 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-21 08:58:06,119 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-21 08:58:06,120 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-21 08:58:06,120 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-21 08:58:06,120 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-21 08:58:06,121 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-07-21 08:58:06,201 INFO L234 CfgBuilder]: Building ICFG [2022-07-21 08:58:06,203 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-21 08:58:06,533 INFO L275 CfgBuilder]: Performing block encoding [2022-07-21 08:58:06,544 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-21 08:58:06,544 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2022-07-21 08:58:06,546 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 08:58:06 BoogieIcfgContainer [2022-07-21 08:58:06,546 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-21 08:58:06,548 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-21 08:58:06,548 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-21 08:58:06,551 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-21 08:58:06,551 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 08:58:05" (1/3) ... [2022-07-21 08:58:06,552 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53e57207 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 08:58:06, skipping insertion in model container [2022-07-21 08:58:06,552 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:58:05" (2/3) ... [2022-07-21 08:58:06,552 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53e57207 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 08:58:06, skipping insertion in model container [2022-07-21 08:58:06,552 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 08:58:06" (3/3) ... [2022-07-21 08:58:06,553 INFO L111 eAbstractionObserver]: Analyzing ICFG chl-chromosome-symm.wvr.c [2022-07-21 08:58:06,558 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-21 08:58:06,565 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-21 08:58:06,565 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-21 08:58:06,566 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-21 08:58:06,690 INFO L135 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-07-21 08:58:06,734 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 256 places, 272 transitions, 560 flow [2022-07-21 08:58:06,883 INFO L129 PetriNetUnfolder]: 23/270 cut-off events. [2022-07-21 08:58:06,883 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-07-21 08:58:06,890 INFO L84 FinitePrefix]: Finished finitePrefix Result has 279 conditions, 270 events. 23/270 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 327 event pairs, 0 based on Foata normal form. 0/246 useless extension candidates. Maximal degree in co-relation 171. Up to 2 conditions per place. [2022-07-21 08:58:06,891 INFO L82 GeneralOperation]: Start removeDead. Operand has 256 places, 272 transitions, 560 flow [2022-07-21 08:58:06,904 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 245 places, 261 transitions, 534 flow [2022-07-21 08:58:06,918 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-21 08:58:06,924 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@1e5a0fa4, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@76edd50a [2022-07-21 08:58:06,924 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-07-21 08:58:06,978 INFO L129 PetriNetUnfolder]: 23/260 cut-off events. [2022-07-21 08:58:06,979 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-07-21 08:58:06,979 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:58:06,980 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:58:06,981 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 08:58:06,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:58:06,986 INFO L85 PathProgramCache]: Analyzing trace with hash 63985711, now seen corresponding path program 1 times [2022-07-21 08:58:06,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:58:06,995 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1097850808] [2022-07-21 08:58:06,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:58:06,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:58:07,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:58:07,247 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:58:07,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:58:07,249 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1097850808] [2022-07-21 08:58:07,249 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1097850808] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:58:07,250 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:58:07,250 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-21 08:58:07,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591406425] [2022-07-21 08:58:07,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:58:07,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-21 08:58:07,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:58:07,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-21 08:58:07,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-21 08:58:07,315 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 250 out of 272 [2022-07-21 08:58:07,320 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 261 transitions, 534 flow. Second operand has 2 states, 2 states have (on average 252.5) internal successors, (505), 2 states have internal predecessors, (505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:07,321 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:58:07,321 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 250 of 272 [2022-07-21 08:58:07,322 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:58:07,401 INFO L129 PetriNetUnfolder]: 6/244 cut-off events. [2022-07-21 08:58:07,401 INFO L130 PetriNetUnfolder]: For 9/10 co-relation queries the response was YES. [2022-07-21 08:58:07,406 INFO L84 FinitePrefix]: Finished finitePrefix Result has 258 conditions, 244 events. 6/244 cut-off events. For 9/10 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 308 event pairs, 0 based on Foata normal form. 20/245 useless extension candidates. Maximal degree in co-relation 162. Up to 5 conditions per place. [2022-07-21 08:58:07,407 INFO L132 encePairwiseOnDemand]: 255/272 looper letters, 4 selfloop transitions, 0 changer transitions 7/244 dead transitions. [2022-07-21 08:58:07,408 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 244 transitions, 508 flow [2022-07-21 08:58:07,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-21 08:58:07,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-07-21 08:58:07,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 521 transitions. [2022-07-21 08:58:07,428 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9577205882352942 [2022-07-21 08:58:07,429 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 521 transitions. [2022-07-21 08:58:07,430 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 521 transitions. [2022-07-21 08:58:07,435 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:58:07,438 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 521 transitions. [2022-07-21 08:58:07,441 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 260.5) internal successors, (521), 2 states have internal predecessors, (521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:07,448 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 272.0) internal successors, (816), 3 states have internal predecessors, (816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:07,449 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 272.0) internal successors, (816), 3 states have internal predecessors, (816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:07,450 INFO L186 Difference]: Start difference. First operand has 245 places, 261 transitions, 534 flow. Second operand 2 states and 521 transitions. [2022-07-21 08:58:07,451 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 244 transitions, 508 flow [2022-07-21 08:58:07,458 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 242 places, 244 transitions, 500 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-07-21 08:58:07,468 INFO L242 Difference]: Finished difference. Result has 242 places, 237 transitions, 478 flow [2022-07-21 08:58:07,470 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=272, PETRI_DIFFERENCE_MINUEND_FLOW=492, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=244, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=244, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=478, PETRI_PLACES=242, PETRI_TRANSITIONS=237} [2022-07-21 08:58:07,475 INFO L279 CegarLoopForPetriNet]: 245 programPoint places, -3 predicate places. [2022-07-21 08:58:07,476 INFO L495 AbstractCegarLoop]: Abstraction has has 242 places, 237 transitions, 478 flow [2022-07-21 08:58:07,477 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 252.5) internal successors, (505), 2 states have internal predecessors, (505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:07,477 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:58:07,477 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:58:07,478 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-21 08:58:07,478 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 08:58:07,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:58:07,481 INFO L85 PathProgramCache]: Analyzing trace with hash 1774321134, now seen corresponding path program 1 times [2022-07-21 08:58:07,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:58:07,482 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1725723824] [2022-07-21 08:58:07,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:58:07,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:58:07,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:58:07,642 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:58:07,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:58:07,643 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1725723824] [2022-07-21 08:58:07,645 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1725723824] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:58:07,646 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:58:07,646 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 08:58:07,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876998835] [2022-07-21 08:58:07,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:58:07,648 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 08:58:07,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:58:07,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 08:58:07,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 08:58:07,652 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 239 out of 272 [2022-07-21 08:58:07,655 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 242 places, 237 transitions, 478 flow. Second operand has 4 states, 4 states have (on average 241.0) internal successors, (964), 4 states have internal predecessors, (964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:07,655 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:58:07,655 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 239 of 272 [2022-07-21 08:58:07,655 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:58:07,822 INFO L129 PetriNetUnfolder]: 32/666 cut-off events. [2022-07-21 08:58:07,823 INFO L130 PetriNetUnfolder]: For 6/21 co-relation queries the response was YES. [2022-07-21 08:58:07,826 INFO L84 FinitePrefix]: Finished finitePrefix Result has 753 conditions, 666 events. 32/666 cut-off events. For 6/21 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 2709 event pairs, 9 based on Foata normal form. 2/625 useless extension candidates. Maximal degree in co-relation 750. Up to 34 conditions per place. [2022-07-21 08:58:07,828 INFO L132 encePairwiseOnDemand]: 267/272 looper letters, 26 selfloop transitions, 4 changer transitions 0/252 dead transitions. [2022-07-21 08:58:07,828 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 239 places, 252 transitions, 575 flow [2022-07-21 08:58:07,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 08:58:07,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-07-21 08:58:07,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1226 transitions. [2022-07-21 08:58:07,832 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9014705882352941 [2022-07-21 08:58:07,832 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1226 transitions. [2022-07-21 08:58:07,832 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1226 transitions. [2022-07-21 08:58:07,833 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:58:07,833 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1226 transitions. [2022-07-21 08:58:07,836 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 245.2) internal successors, (1226), 5 states have internal predecessors, (1226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:07,841 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 272.0) internal successors, (1632), 6 states have internal predecessors, (1632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:07,842 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 272.0) internal successors, (1632), 6 states have internal predecessors, (1632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:07,842 INFO L186 Difference]: Start difference. First operand has 242 places, 237 transitions, 478 flow. Second operand 5 states and 1226 transitions. [2022-07-21 08:58:07,842 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 239 places, 252 transitions, 575 flow [2022-07-21 08:58:07,845 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 239 places, 252 transitions, 575 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-07-21 08:58:07,853 INFO L242 Difference]: Finished difference. Result has 242 places, 240 transitions, 507 flow [2022-07-21 08:58:07,854 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=272, PETRI_DIFFERENCE_MINUEND_FLOW=478, PETRI_DIFFERENCE_MINUEND_PLACES=235, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=237, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=233, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=507, PETRI_PLACES=242, PETRI_TRANSITIONS=240} [2022-07-21 08:58:07,854 INFO L279 CegarLoopForPetriNet]: 245 programPoint places, -3 predicate places. [2022-07-21 08:58:07,855 INFO L495 AbstractCegarLoop]: Abstraction has has 242 places, 240 transitions, 507 flow [2022-07-21 08:58:07,855 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 241.0) internal successors, (964), 4 states have internal predecessors, (964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:07,856 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:58:07,856 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:58:07,857 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-21 08:58:07,857 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 08:58:07,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:58:07,858 INFO L85 PathProgramCache]: Analyzing trace with hash -2002820622, now seen corresponding path program 1 times [2022-07-21 08:58:07,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:58:07,858 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [256125930] [2022-07-21 08:58:07,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:58:07,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:58:07,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:58:08,021 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:58:08,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:58:08,023 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [256125930] [2022-07-21 08:58:08,023 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [256125930] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:58:08,023 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:58:08,024 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 08:58:08,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403197812] [2022-07-21 08:58:08,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:58:08,026 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 08:58:08,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:58:08,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 08:58:08,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-21 08:58:08,029 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 226 out of 272 [2022-07-21 08:58:08,031 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 242 places, 240 transitions, 507 flow. Second operand has 5 states, 5 states have (on average 230.0) internal successors, (1150), 5 states have internal predecessors, (1150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:08,031 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:58:08,031 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 226 of 272 [2022-07-21 08:58:08,031 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:58:08,162 INFO L129 PetriNetUnfolder]: 5/342 cut-off events. [2022-07-21 08:58:08,162 INFO L130 PetriNetUnfolder]: For 8/11 co-relation queries the response was YES. [2022-07-21 08:58:08,164 INFO L84 FinitePrefix]: Finished finitePrefix Result has 402 conditions, 342 events. 5/342 cut-off events. For 8/11 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 584 event pairs, 0 based on Foata normal form. 0/330 useless extension candidates. Maximal degree in co-relation 396. Up to 29 conditions per place. [2022-07-21 08:58:08,165 INFO L132 encePairwiseOnDemand]: 262/272 looper letters, 28 selfloop transitions, 8 changer transitions 0/248 dead transitions. [2022-07-21 08:58:08,166 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 248 transitions, 595 flow [2022-07-21 08:58:08,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 08:58:08,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-07-21 08:58:08,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1168 transitions. [2022-07-21 08:58:08,170 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8588235294117647 [2022-07-21 08:58:08,170 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1168 transitions. [2022-07-21 08:58:08,171 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1168 transitions. [2022-07-21 08:58:08,171 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:58:08,173 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1168 transitions. [2022-07-21 08:58:08,175 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 233.6) internal successors, (1168), 5 states have internal predecessors, (1168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:08,178 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 272.0) internal successors, (1632), 6 states have internal predecessors, (1632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:08,179 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 272.0) internal successors, (1632), 6 states have internal predecessors, (1632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:08,180 INFO L186 Difference]: Start difference. First operand has 242 places, 240 transitions, 507 flow. Second operand 5 states and 1168 transitions. [2022-07-21 08:58:08,180 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 248 transitions, 595 flow [2022-07-21 08:58:08,182 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 248 transitions, 595 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-07-21 08:58:08,186 INFO L242 Difference]: Finished difference. Result has 247 places, 242 transitions, 539 flow [2022-07-21 08:58:08,186 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=272, PETRI_DIFFERENCE_MINUEND_FLOW=507, PETRI_DIFFERENCE_MINUEND_PLACES=242, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=240, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=232, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=539, PETRI_PLACES=247, PETRI_TRANSITIONS=242} [2022-07-21 08:58:08,188 INFO L279 CegarLoopForPetriNet]: 245 programPoint places, 2 predicate places. [2022-07-21 08:58:08,189 INFO L495 AbstractCegarLoop]: Abstraction has has 247 places, 242 transitions, 539 flow [2022-07-21 08:58:08,189 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 230.0) internal successors, (1150), 5 states have internal predecessors, (1150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:08,190 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:58:08,190 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:58:08,190 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-21 08:58:08,190 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 08:58:08,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:58:08,192 INFO L85 PathProgramCache]: Analyzing trace with hash -1043059878, now seen corresponding path program 1 times [2022-07-21 08:58:08,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:58:08,192 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1923623306] [2022-07-21 08:58:08,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:58:08,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:58:08,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:58:08,366 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-21 08:58:08,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:58:08,366 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1923623306] [2022-07-21 08:58:08,367 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1923623306] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 08:58:08,367 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1514842336] [2022-07-21 08:58:08,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:58:08,368 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 08:58:08,368 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 08:58:08,370 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) [2022-07-21 08:58:08,404 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-21 08:58:08,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:58:08,495 INFO L263 TraceCheckSpWp]: Trace formula consists of 335 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-21 08:58:08,506 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 08:58:08,666 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-21 08:58:08,666 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 08:58:08,768 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-21 08:58:08,768 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1514842336] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 08:58:08,769 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-21 08:58:08,769 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2022-07-21 08:58:08,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113643398] [2022-07-21 08:58:08,770 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-21 08:58:08,771 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-07-21 08:58:08,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:58:08,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-07-21 08:58:08,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2022-07-21 08:58:08,776 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 224 out of 272 [2022-07-21 08:58:08,780 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 247 places, 242 transitions, 539 flow. Second operand has 15 states, 15 states have (on average 227.33333333333334) internal successors, (3410), 15 states have internal predecessors, (3410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:08,780 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:58:08,780 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 224 of 272 [2022-07-21 08:58:08,781 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:58:09,100 INFO L129 PetriNetUnfolder]: 5/360 cut-off events. [2022-07-21 08:58:09,101 INFO L130 PetriNetUnfolder]: For 16/19 co-relation queries the response was YES. [2022-07-21 08:58:09,105 INFO L84 FinitePrefix]: Finished finitePrefix Result has 454 conditions, 360 events. 5/360 cut-off events. For 16/19 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 566 event pairs, 0 based on Foata normal form. 4/354 useless extension candidates. Maximal degree in co-relation 446. Up to 23 conditions per place. [2022-07-21 08:58:09,108 INFO L132 encePairwiseOnDemand]: 256/272 looper letters, 30 selfloop transitions, 22 changer transitions 0/262 dead transitions. [2022-07-21 08:58:09,108 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 257 places, 262 transitions, 687 flow [2022-07-21 08:58:09,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-21 08:58:09,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-07-21 08:58:09,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2520 transitions. [2022-07-21 08:58:09,114 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8422459893048129 [2022-07-21 08:58:09,114 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2520 transitions. [2022-07-21 08:58:09,114 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2520 transitions. [2022-07-21 08:58:09,116 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:58:09,116 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2520 transitions. [2022-07-21 08:58:09,121 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 229.0909090909091) internal successors, (2520), 11 states have internal predecessors, (2520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:09,127 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 272.0) internal successors, (3264), 12 states have internal predecessors, (3264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:09,128 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 272.0) internal successors, (3264), 12 states have internal predecessors, (3264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:09,128 INFO L186 Difference]: Start difference. First operand has 247 places, 242 transitions, 539 flow. Second operand 11 states and 2520 transitions. [2022-07-21 08:58:09,129 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 257 places, 262 transitions, 687 flow [2022-07-21 08:58:09,131 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 254 places, 262 transitions, 675 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-07-21 08:58:09,134 INFO L242 Difference]: Finished difference. Result has 257 places, 254 transitions, 638 flow [2022-07-21 08:58:09,135 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=272, PETRI_DIFFERENCE_MINUEND_FLOW=527, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=242, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=226, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=638, PETRI_PLACES=257, PETRI_TRANSITIONS=254} [2022-07-21 08:58:09,136 INFO L279 CegarLoopForPetriNet]: 245 programPoint places, 12 predicate places. [2022-07-21 08:58:09,136 INFO L495 AbstractCegarLoop]: Abstraction has has 257 places, 254 transitions, 638 flow [2022-07-21 08:58:09,137 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 227.33333333333334) internal successors, (3410), 15 states have internal predecessors, (3410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:09,137 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:58:09,138 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:58:09,167 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-21 08:58:09,357 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 08:58:09,358 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 08:58:09,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:58:09,359 INFO L85 PathProgramCache]: Analyzing trace with hash 785132506, now seen corresponding path program 2 times [2022-07-21 08:58:09,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:58:09,359 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1351163994] [2022-07-21 08:58:09,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:58:09,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:58:09,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:58:09,532 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-21 08:58:09,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:58:09,533 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1351163994] [2022-07-21 08:58:09,533 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1351163994] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 08:58:09,533 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1524263612] [2022-07-21 08:58:09,534 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-21 08:58:09,534 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 08:58:09,534 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 08:58:09,535 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) [2022-07-21 08:58:09,565 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-21 08:58:09,654 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-21 08:58:09,655 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-21 08:58:09,656 INFO L263 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-21 08:58:09,667 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 08:58:09,811 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-07-21 08:58:09,811 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 08:58:09,811 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1524263612] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:58:09,812 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 08:58:09,812 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [11] total 15 [2022-07-21 08:58:09,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752489411] [2022-07-21 08:58:09,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:58:09,813 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 08:58:09,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:58:09,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 08:58:09,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2022-07-21 08:58:09,815 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 227 out of 272 [2022-07-21 08:58:09,817 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 254 transitions, 638 flow. Second operand has 6 states, 6 states have (on average 229.16666666666666) internal successors, (1375), 6 states have internal predecessors, (1375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:09,817 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:58:09,817 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 227 of 272 [2022-07-21 08:58:09,817 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:58:10,351 INFO L129 PetriNetUnfolder]: 276/1837 cut-off events. [2022-07-21 08:58:10,351 INFO L130 PetriNetUnfolder]: For 59/59 co-relation queries the response was YES. [2022-07-21 08:58:10,356 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2571 conditions, 1837 events. 276/1837 cut-off events. For 59/59 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 12785 event pairs, 5 based on Foata normal form. 0/1677 useless extension candidates. Maximal degree in co-relation 2560. Up to 212 conditions per place. [2022-07-21 08:58:10,361 INFO L132 encePairwiseOnDemand]: 260/272 looper letters, 63 selfloop transitions, 33 changer transitions 0/323 dead transitions. [2022-07-21 08:58:10,362 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 269 places, 323 transitions, 979 flow [2022-07-21 08:58:10,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-21 08:58:10,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-07-21 08:58:10,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 3050 transitions. [2022-07-21 08:58:10,382 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8625565610859729 [2022-07-21 08:58:10,382 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 3050 transitions. [2022-07-21 08:58:10,382 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 3050 transitions. [2022-07-21 08:58:10,384 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:58:10,384 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 3050 transitions. [2022-07-21 08:58:10,390 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 234.6153846153846) internal successors, (3050), 13 states have internal predecessors, (3050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:10,395 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 272.0) internal successors, (3808), 14 states have internal predecessors, (3808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:10,397 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 272.0) internal successors, (3808), 14 states have internal predecessors, (3808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:10,397 INFO L186 Difference]: Start difference. First operand has 257 places, 254 transitions, 638 flow. Second operand 13 states and 3050 transitions. [2022-07-21 08:58:10,397 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 269 places, 323 transitions, 979 flow [2022-07-21 08:58:10,402 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 266 places, 323 transitions, 962 flow, removed 4 selfloop flow, removed 3 redundant places. [2022-07-21 08:58:10,406 INFO L242 Difference]: Finished difference. Result has 272 places, 285 transitions, 817 flow [2022-07-21 08:58:10,407 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=272, PETRI_DIFFERENCE_MINUEND_FLOW=621, PETRI_DIFFERENCE_MINUEND_PLACES=254, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=254, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=243, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=817, PETRI_PLACES=272, PETRI_TRANSITIONS=285} [2022-07-21 08:58:10,408 INFO L279 CegarLoopForPetriNet]: 245 programPoint places, 27 predicate places. [2022-07-21 08:58:10,408 INFO L495 AbstractCegarLoop]: Abstraction has has 272 places, 285 transitions, 817 flow [2022-07-21 08:58:10,409 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 229.16666666666666) internal successors, (1375), 6 states have internal predecessors, (1375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:10,409 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:58:10,409 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:58:10,435 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-21 08:58:10,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 08:58:10,624 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 08:58:10,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:58:10,624 INFO L85 PathProgramCache]: Analyzing trace with hash 348903810, now seen corresponding path program 3 times [2022-07-21 08:58:10,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:58:10,625 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1099410082] [2022-07-21 08:58:10,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:58:10,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:58:10,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:58:10,744 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-21 08:58:10,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:58:10,745 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1099410082] [2022-07-21 08:58:10,745 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1099410082] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 08:58:10,745 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1723177443] [2022-07-21 08:58:10,746 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-21 08:58:10,746 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 08:58:10,746 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 08:58:10,747 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) [2022-07-21 08:58:10,792 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-21 08:58:10,898 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-07-21 08:58:10,898 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-21 08:58:10,900 INFO L263 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-21 08:58:10,907 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 08:58:11,156 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-07-21 08:58:11,157 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 08:58:11,157 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1723177443] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:58:11,157 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 08:58:11,157 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [11] total 15 [2022-07-21 08:58:11,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142303701] [2022-07-21 08:58:11,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:58:11,158 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 08:58:11,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:58:11,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 08:58:11,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2022-07-21 08:58:11,161 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 227 out of 272 [2022-07-21 08:58:11,162 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 272 places, 285 transitions, 817 flow. Second operand has 6 states, 6 states have (on average 229.16666666666666) internal successors, (1375), 6 states have internal predecessors, (1375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:11,162 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:58:11,162 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 227 of 272 [2022-07-21 08:58:11,163 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:58:11,795 INFO L129 PetriNetUnfolder]: 349/2075 cut-off events. [2022-07-21 08:58:11,796 INFO L130 PetriNetUnfolder]: For 831/894 co-relation queries the response was YES. [2022-07-21 08:58:11,802 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3498 conditions, 2075 events. 349/2075 cut-off events. For 831/894 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 14865 event pairs, 90 based on Foata normal form. 24/2018 useless extension candidates. Maximal degree in co-relation 3481. Up to 393 conditions per place. [2022-07-21 08:58:11,808 INFO L132 encePairwiseOnDemand]: 259/272 looper letters, 71 selfloop transitions, 22 changer transitions 24/344 dead transitions. [2022-07-21 08:58:11,809 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 283 places, 344 transitions, 1334 flow [2022-07-21 08:58:11,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-21 08:58:11,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-07-21 08:58:11,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2817 transitions. [2022-07-21 08:58:11,815 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8630514705882353 [2022-07-21 08:58:11,815 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2817 transitions. [2022-07-21 08:58:11,816 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2817 transitions. [2022-07-21 08:58:11,817 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:58:11,817 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2817 transitions. [2022-07-21 08:58:11,822 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 234.75) internal successors, (2817), 12 states have internal predecessors, (2817), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:11,828 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 272.0) internal successors, (3536), 13 states have internal predecessors, (3536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:11,830 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 272.0) internal successors, (3536), 13 states have internal predecessors, (3536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:11,830 INFO L186 Difference]: Start difference. First operand has 272 places, 285 transitions, 817 flow. Second operand 12 states and 2817 transitions. [2022-07-21 08:58:11,830 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 283 places, 344 transitions, 1334 flow [2022-07-21 08:58:11,836 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 283 places, 344 transitions, 1334 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-07-21 08:58:11,840 INFO L242 Difference]: Finished difference. Result has 289 places, 294 transitions, 981 flow [2022-07-21 08:58:11,841 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=272, PETRI_DIFFERENCE_MINUEND_FLOW=817, PETRI_DIFFERENCE_MINUEND_PLACES=272, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=285, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=270, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=981, PETRI_PLACES=289, PETRI_TRANSITIONS=294} [2022-07-21 08:58:11,842 INFO L279 CegarLoopForPetriNet]: 245 programPoint places, 44 predicate places. [2022-07-21 08:58:11,842 INFO L495 AbstractCegarLoop]: Abstraction has has 289 places, 294 transitions, 981 flow [2022-07-21 08:58:11,843 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 229.16666666666666) internal successors, (1375), 6 states have internal predecessors, (1375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:11,843 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:58:11,849 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:58:11,878 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-21 08:58:12,077 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 08:58:12,078 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 08:58:12,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:58:12,079 INFO L85 PathProgramCache]: Analyzing trace with hash -178877372, now seen corresponding path program 1 times [2022-07-21 08:58:12,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:58:12,079 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536807831] [2022-07-21 08:58:12,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:58:12,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:58:12,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:58:12,129 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-07-21 08:58:12,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:58:12,130 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1536807831] [2022-07-21 08:58:12,130 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1536807831] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:58:12,130 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:58:12,131 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 08:58:12,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945279406] [2022-07-21 08:58:12,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:58:12,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 08:58:12,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:58:12,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 08:58:12,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 08:58:12,134 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 239 out of 272 [2022-07-21 08:58:12,135 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 289 places, 294 transitions, 981 flow. Second operand has 4 states, 4 states have (on average 241.0) internal successors, (964), 4 states have internal predecessors, (964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:12,135 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:58:12,135 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 239 of 272 [2022-07-21 08:58:12,135 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:58:12,499 INFO L129 PetriNetUnfolder]: 135/1919 cut-off events. [2022-07-21 08:58:12,500 INFO L130 PetriNetUnfolder]: For 947/1070 co-relation queries the response was YES. [2022-07-21 08:58:12,539 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2761 conditions, 1919 events. 135/1919 cut-off events. For 947/1070 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 12742 event pairs, 25 based on Foata normal form. 69/1921 useless extension candidates. Maximal degree in co-relation 2737. Up to 122 conditions per place. [2022-07-21 08:58:12,544 INFO L132 encePairwiseOnDemand]: 267/272 looper letters, 61 selfloop transitions, 4 changer transitions 0/314 dead transitions. [2022-07-21 08:58:12,544 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 287 places, 314 transitions, 1210 flow [2022-07-21 08:58:12,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 08:58:12,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-07-21 08:58:12,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1224 transitions. [2022-07-21 08:58:12,547 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9 [2022-07-21 08:58:12,548 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1224 transitions. [2022-07-21 08:58:12,548 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1224 transitions. [2022-07-21 08:58:12,549 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:58:12,549 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1224 transitions. [2022-07-21 08:58:12,551 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 244.8) internal successors, (1224), 5 states have internal predecessors, (1224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:12,554 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 272.0) internal successors, (1632), 6 states have internal predecessors, (1632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:12,555 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 272.0) internal successors, (1632), 6 states have internal predecessors, (1632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:12,555 INFO L186 Difference]: Start difference. First operand has 289 places, 294 transitions, 981 flow. Second operand 5 states and 1224 transitions. [2022-07-21 08:58:12,555 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 287 places, 314 transitions, 1210 flow [2022-07-21 08:58:12,562 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 282 places, 314 transitions, 1169 flow, removed 13 selfloop flow, removed 5 redundant places. [2022-07-21 08:58:12,567 INFO L242 Difference]: Finished difference. Result has 285 places, 294 transitions, 983 flow [2022-07-21 08:58:12,568 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=272, PETRI_DIFFERENCE_MINUEND_FLOW=934, PETRI_DIFFERENCE_MINUEND_PLACES=278, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=291, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=287, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=983, PETRI_PLACES=285, PETRI_TRANSITIONS=294} [2022-07-21 08:58:12,568 INFO L279 CegarLoopForPetriNet]: 245 programPoint places, 40 predicate places. [2022-07-21 08:58:12,569 INFO L495 AbstractCegarLoop]: Abstraction has has 285 places, 294 transitions, 983 flow [2022-07-21 08:58:12,582 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 241.0) internal successors, (964), 4 states have internal predecessors, (964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:12,582 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:58:12,582 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:58:12,582 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-21 08:58:12,583 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 08:58:12,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:58:12,583 INFO L85 PathProgramCache]: Analyzing trace with hash 1817286902, now seen corresponding path program 4 times [2022-07-21 08:58:12,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:58:12,584 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1605182511] [2022-07-21 08:58:12,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:58:12,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:58:12,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:58:12,711 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-21 08:58:12,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:58:12,712 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1605182511] [2022-07-21 08:58:12,712 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1605182511] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 08:58:12,712 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1867767153] [2022-07-21 08:58:12,713 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-07-21 08:58:12,713 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 08:58:12,713 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 08:58:12,716 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) [2022-07-21 08:58:12,744 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-21 08:58:12,828 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-07-21 08:58:12,828 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-21 08:58:12,830 INFO L263 TraceCheckSpWp]: Trace formula consists of 347 conjuncts, 10 conjunts are in the unsatisfiable core [2022-07-21 08:58:12,833 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 08:58:12,998 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-21 08:58:12,998 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 08:58:13,094 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-21 08:58:13,094 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1867767153] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 08:58:13,094 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-21 08:58:13,095 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 22 [2022-07-21 08:58:13,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426062123] [2022-07-21 08:58:13,095 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-21 08:58:13,096 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-07-21 08:58:13,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:58:13,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-07-21 08:58:13,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=348, Unknown=0, NotChecked=0, Total=462 [2022-07-21 08:58:13,101 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 224 out of 272 [2022-07-21 08:58:13,105 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 285 places, 294 transitions, 983 flow. Second operand has 22 states, 22 states have (on average 227.1818181818182) internal successors, (4998), 22 states have internal predecessors, (4998), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:13,106 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:58:13,106 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 224 of 272 [2022-07-21 08:58:13,106 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:58:13,696 INFO L129 PetriNetUnfolder]: 61/1584 cut-off events. [2022-07-21 08:58:13,715 INFO L130 PetriNetUnfolder]: For 397/430 co-relation queries the response was YES. [2022-07-21 08:58:13,722 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2183 conditions, 1584 events. 61/1584 cut-off events. For 397/430 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 9188 event pairs, 4 based on Foata normal form. 19/1577 useless extension candidates. Maximal degree in co-relation 2159. Up to 52 conditions per place. [2022-07-21 08:58:13,725 INFO L132 encePairwiseOnDemand]: 256/272 looper letters, 38 selfloop transitions, 34 changer transitions 0/322 dead transitions. [2022-07-21 08:58:13,726 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 301 places, 322 transitions, 1239 flow [2022-07-21 08:58:13,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-21 08:58:13,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-07-21 08:58:13,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 3884 transitions. [2022-07-21 08:58:13,736 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8399653979238755 [2022-07-21 08:58:13,742 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 3884 transitions. [2022-07-21 08:58:13,742 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 3884 transitions. [2022-07-21 08:58:13,744 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:58:13,745 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 3884 transitions. [2022-07-21 08:58:13,752 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 228.47058823529412) internal successors, (3884), 17 states have internal predecessors, (3884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:13,760 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 272.0) internal successors, (4896), 18 states have internal predecessors, (4896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:13,762 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 272.0) internal successors, (4896), 18 states have internal predecessors, (4896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:13,762 INFO L186 Difference]: Start difference. First operand has 285 places, 294 transitions, 983 flow. Second operand 17 states and 3884 transitions. [2022-07-21 08:58:13,762 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 301 places, 322 transitions, 1239 flow [2022-07-21 08:58:13,768 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 301 places, 322 transitions, 1239 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-07-21 08:58:13,773 INFO L242 Difference]: Finished difference. Result has 304 places, 308 transitions, 1158 flow [2022-07-21 08:58:13,774 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=272, PETRI_DIFFERENCE_MINUEND_FLOW=983, PETRI_DIFFERENCE_MINUEND_PLACES=285, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=294, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=268, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1158, PETRI_PLACES=304, PETRI_TRANSITIONS=308} [2022-07-21 08:58:13,776 INFO L279 CegarLoopForPetriNet]: 245 programPoint places, 59 predicate places. [2022-07-21 08:58:13,776 INFO L495 AbstractCegarLoop]: Abstraction has has 304 places, 308 transitions, 1158 flow [2022-07-21 08:58:13,778 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 227.1818181818182) internal successors, (4998), 22 states have internal predecessors, (4998), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:13,778 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:58:13,778 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] [2022-07-21 08:58:13,802 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-21 08:58:13,991 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 08:58:13,992 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 08:58:13,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:58:13,993 INFO L85 PathProgramCache]: Analyzing trace with hash 1163814902, now seen corresponding path program 5 times [2022-07-21 08:58:13,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:58:13,993 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138769328] [2022-07-21 08:58:13,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:58:13,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:58:14,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:58:14,185 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2022-07-21 08:58:14,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:58:14,185 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1138769328] [2022-07-21 08:58:14,186 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1138769328] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:58:14,186 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:58:14,186 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 08:58:14,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621013792] [2022-07-21 08:58:14,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:58:14,187 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 08:58:14,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:58:14,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 08:58:14,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-07-21 08:58:14,189 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 222 out of 272 [2022-07-21 08:58:14,190 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 304 places, 308 transitions, 1158 flow. Second operand has 7 states, 7 states have (on average 224.0) internal successors, (1568), 7 states have internal predecessors, (1568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:14,190 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:58:14,190 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 222 of 272 [2022-07-21 08:58:14,191 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:58:15,322 INFO L129 PetriNetUnfolder]: 818/5846 cut-off events. [2022-07-21 08:58:15,322 INFO L130 PetriNetUnfolder]: For 1621/1668 co-relation queries the response was YES. [2022-07-21 08:58:15,354 INFO L84 FinitePrefix]: Finished finitePrefix Result has 9238 conditions, 5846 events. 818/5846 cut-off events. For 1621/1668 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 52785 event pairs, 17 based on Foata normal form. 59/5717 useless extension candidates. Maximal degree in co-relation 9210. Up to 704 conditions per place. [2022-07-21 08:58:15,373 INFO L132 encePairwiseOnDemand]: 261/272 looper letters, 89 selfloop transitions, 23 changer transitions 4/389 dead transitions. [2022-07-21 08:58:15,374 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 313 places, 389 transitions, 1634 flow [2022-07-21 08:58:15,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-21 08:58:15,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-07-21 08:58:15,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2325 transitions. [2022-07-21 08:58:15,379 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8547794117647058 [2022-07-21 08:58:15,380 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2325 transitions. [2022-07-21 08:58:15,380 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2325 transitions. [2022-07-21 08:58:15,381 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:58:15,381 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2325 transitions. [2022-07-21 08:58:15,386 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 232.5) internal successors, (2325), 10 states have internal predecessors, (2325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:15,391 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 272.0) internal successors, (2992), 11 states have internal predecessors, (2992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:15,392 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 272.0) internal successors, (2992), 11 states have internal predecessors, (2992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:15,392 INFO L186 Difference]: Start difference. First operand has 304 places, 308 transitions, 1158 flow. Second operand 10 states and 2325 transitions. [2022-07-21 08:58:15,392 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 313 places, 389 transitions, 1634 flow [2022-07-21 08:58:15,412 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 305 places, 389 transitions, 1589 flow, removed 8 selfloop flow, removed 8 redundant places. [2022-07-21 08:58:15,418 INFO L242 Difference]: Finished difference. Result has 308 places, 323 transitions, 1223 flow [2022-07-21 08:58:15,418 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=272, PETRI_DIFFERENCE_MINUEND_FLOW=1113, PETRI_DIFFERENCE_MINUEND_PLACES=296, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=308, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=298, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1223, PETRI_PLACES=308, PETRI_TRANSITIONS=323} [2022-07-21 08:58:15,419 INFO L279 CegarLoopForPetriNet]: 245 programPoint places, 63 predicate places. [2022-07-21 08:58:15,419 INFO L495 AbstractCegarLoop]: Abstraction has has 308 places, 323 transitions, 1223 flow [2022-07-21 08:58:15,420 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 224.0) internal successors, (1568), 7 states have internal predecessors, (1568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:15,420 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:58:15,420 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:58:15,421 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-21 08:58:15,422 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 08:58:15,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:58:15,422 INFO L85 PathProgramCache]: Analyzing trace with hash -1112339455, now seen corresponding path program 1 times [2022-07-21 08:58:15,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:58:15,423 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342937894] [2022-07-21 08:58:15,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:58:15,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:58:15,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:58:15,601 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2022-07-21 08:58:15,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:58:15,602 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [342937894] [2022-07-21 08:58:15,602 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [342937894] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:58:15,602 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:58:15,602 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-21 08:58:15,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488606350] [2022-07-21 08:58:15,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:58:15,603 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-21 08:58:15,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:58:15,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-21 08:58:15,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-07-21 08:58:15,606 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 222 out of 272 [2022-07-21 08:58:15,607 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 308 places, 323 transitions, 1223 flow. Second operand has 8 states, 8 states have (on average 224.75) internal successors, (1798), 8 states have internal predecessors, (1798), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:15,607 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:58:15,608 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 222 of 272 [2022-07-21 08:58:15,608 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:58:16,708 INFO L129 PetriNetUnfolder]: 791/4837 cut-off events. [2022-07-21 08:58:16,708 INFO L130 PetriNetUnfolder]: For 2236/2328 co-relation queries the response was YES. [2022-07-21 08:58:16,728 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8393 conditions, 4837 events. 791/4837 cut-off events. For 2236/2328 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 40634 event pairs, 269 based on Foata normal form. 32/4665 useless extension candidates. Maximal degree in co-relation 8362. Up to 730 conditions per place. [2022-07-21 08:58:16,745 INFO L132 encePairwiseOnDemand]: 263/272 looper letters, 93 selfloop transitions, 18 changer transitions 28/412 dead transitions. [2022-07-21 08:58:16,745 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 317 places, 412 transitions, 1807 flow [2022-07-21 08:58:16,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-21 08:58:16,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-07-21 08:58:16,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2552 transitions. [2022-07-21 08:58:16,753 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8529411764705882 [2022-07-21 08:58:16,753 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2552 transitions. [2022-07-21 08:58:16,753 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2552 transitions. [2022-07-21 08:58:16,755 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:58:16,755 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2552 transitions. [2022-07-21 08:58:16,761 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 232.0) internal successors, (2552), 11 states have internal predecessors, (2552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:16,766 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 272.0) internal successors, (3264), 12 states have internal predecessors, (3264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:16,766 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 272.0) internal successors, (3264), 12 states have internal predecessors, (3264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:16,767 INFO L186 Difference]: Start difference. First operand has 308 places, 323 transitions, 1223 flow. Second operand 11 states and 2552 transitions. [2022-07-21 08:58:16,767 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 317 places, 412 transitions, 1807 flow [2022-07-21 08:58:16,780 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 316 places, 412 transitions, 1794 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-07-21 08:58:16,785 INFO L242 Difference]: Finished difference. Result has 321 places, 333 transitions, 1327 flow [2022-07-21 08:58:16,786 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=272, PETRI_DIFFERENCE_MINUEND_FLOW=1219, PETRI_DIFFERENCE_MINUEND_PLACES=306, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=323, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=311, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1327, PETRI_PLACES=321, PETRI_TRANSITIONS=333} [2022-07-21 08:58:16,787 INFO L279 CegarLoopForPetriNet]: 245 programPoint places, 76 predicate places. [2022-07-21 08:58:16,787 INFO L495 AbstractCegarLoop]: Abstraction has has 321 places, 333 transitions, 1327 flow [2022-07-21 08:58:16,788 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 224.75) internal successors, (1798), 8 states have internal predecessors, (1798), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:16,788 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:58:16,788 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:58:16,788 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-21 08:58:16,789 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 08:58:16,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:58:16,789 INFO L85 PathProgramCache]: Analyzing trace with hash 169689273, now seen corresponding path program 2 times [2022-07-21 08:58:16,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:58:16,790 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651733989] [2022-07-21 08:58:16,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:58:16,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:58:16,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:58:16,982 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2022-07-21 08:58:16,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:58:16,983 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1651733989] [2022-07-21 08:58:16,983 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1651733989] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:58:16,984 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:58:16,984 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 08:58:16,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395833680] [2022-07-21 08:58:16,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:58:16,985 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 08:58:16,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:58:16,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 08:58:16,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-07-21 08:58:16,987 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 222 out of 272 [2022-07-21 08:58:16,989 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 321 places, 333 transitions, 1327 flow. Second operand has 7 states, 7 states have (on average 225.14285714285714) internal successors, (1576), 7 states have internal predecessors, (1576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:16,989 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:58:16,989 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 222 of 272 [2022-07-21 08:58:16,989 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:58:18,280 INFO L129 PetriNetUnfolder]: 960/5872 cut-off events. [2022-07-21 08:58:18,283 INFO L130 PetriNetUnfolder]: For 5408/5584 co-relation queries the response was YES. [2022-07-21 08:58:18,321 INFO L84 FinitePrefix]: Finished finitePrefix Result has 11153 conditions, 5872 events. 960/5872 cut-off events. For 5408/5584 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 52771 event pairs, 261 based on Foata normal form. 79/5861 useless extension candidates. Maximal degree in co-relation 11116. Up to 645 conditions per place. [2022-07-21 08:58:18,343 INFO L132 encePairwiseOnDemand]: 256/272 looper letters, 108 selfloop transitions, 63 changer transitions 16/460 dead transitions. [2022-07-21 08:58:18,344 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 331 places, 460 transitions, 2348 flow [2022-07-21 08:58:18,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-21 08:58:18,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-07-21 08:58:18,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 3257 transitions. [2022-07-21 08:58:18,353 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8553046218487395 [2022-07-21 08:58:18,353 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 3257 transitions. [2022-07-21 08:58:18,353 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 3257 transitions. [2022-07-21 08:58:18,355 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:58:18,355 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 3257 transitions. [2022-07-21 08:58:18,362 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 232.64285714285714) internal successors, (3257), 14 states have internal predecessors, (3257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:18,368 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 272.0) internal successors, (4080), 15 states have internal predecessors, (4080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:18,369 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 272.0) internal successors, (4080), 15 states have internal predecessors, (4080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:18,369 INFO L186 Difference]: Start difference. First operand has 321 places, 333 transitions, 1327 flow. Second operand 14 states and 3257 transitions. [2022-07-21 08:58:18,369 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 331 places, 460 transitions, 2348 flow [2022-07-21 08:58:18,390 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 329 places, 460 transitions, 2342 flow, removed 3 selfloop flow, removed 2 redundant places. [2022-07-21 08:58:18,395 INFO L242 Difference]: Finished difference. Result has 340 places, 371 transitions, 1831 flow [2022-07-21 08:58:18,396 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=272, PETRI_DIFFERENCE_MINUEND_FLOW=1323, PETRI_DIFFERENCE_MINUEND_PLACES=316, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=333, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=297, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1831, PETRI_PLACES=340, PETRI_TRANSITIONS=371} [2022-07-21 08:58:18,396 INFO L279 CegarLoopForPetriNet]: 245 programPoint places, 95 predicate places. [2022-07-21 08:58:18,397 INFO L495 AbstractCegarLoop]: Abstraction has has 340 places, 371 transitions, 1831 flow [2022-07-21 08:58:18,397 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 225.14285714285714) internal successors, (1576), 7 states have internal predecessors, (1576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:18,397 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:58:18,398 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:58:18,398 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-21 08:58:18,398 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 08:58:18,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:58:18,399 INFO L85 PathProgramCache]: Analyzing trace with hash -1056484631, now seen corresponding path program 3 times [2022-07-21 08:58:18,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:58:18,399 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598664805] [2022-07-21 08:58:18,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:58:18,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:58:18,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:58:18,564 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2022-07-21 08:58:18,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:58:18,564 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1598664805] [2022-07-21 08:58:18,564 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1598664805] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:58:18,565 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:58:18,565 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 08:58:18,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428042420] [2022-07-21 08:58:18,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:58:18,567 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 08:58:18,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:58:18,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 08:58:18,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-07-21 08:58:18,570 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 222 out of 272 [2022-07-21 08:58:18,571 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 340 places, 371 transitions, 1831 flow. Second operand has 7 states, 7 states have (on average 225.14285714285714) internal successors, (1576), 7 states have internal predecessors, (1576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:18,571 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:58:18,571 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 222 of 272 [2022-07-21 08:58:18,571 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:58:19,810 INFO L129 PetriNetUnfolder]: 952/6465 cut-off events. [2022-07-21 08:58:19,811 INFO L130 PetriNetUnfolder]: For 10395/10875 co-relation queries the response was YES. [2022-07-21 08:58:19,850 INFO L84 FinitePrefix]: Finished finitePrefix Result has 13289 conditions, 6465 events. 952/6465 cut-off events. For 10395/10875 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 60156 event pairs, 337 based on Foata normal form. 98/6476 useless extension candidates. Maximal degree in co-relation 13243. Up to 787 conditions per place. [2022-07-21 08:58:19,869 INFO L132 encePairwiseOnDemand]: 260/272 looper letters, 142 selfloop transitions, 48 changer transitions 11/474 dead transitions. [2022-07-21 08:58:19,870 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 349 places, 474 transitions, 2790 flow [2022-07-21 08:58:19,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-21 08:58:19,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-07-21 08:58:19,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2328 transitions. [2022-07-21 08:58:19,875 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8558823529411764 [2022-07-21 08:58:19,876 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2328 transitions. [2022-07-21 08:58:19,876 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2328 transitions. [2022-07-21 08:58:19,877 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:58:19,877 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2328 transitions. [2022-07-21 08:58:19,884 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 232.8) internal successors, (2328), 10 states have internal predecessors, (2328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:19,889 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 272.0) internal successors, (2992), 11 states have internal predecessors, (2992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:19,890 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 272.0) internal successors, (2992), 11 states have internal predecessors, (2992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:19,890 INFO L186 Difference]: Start difference. First operand has 340 places, 371 transitions, 1831 flow. Second operand 10 states and 2328 transitions. [2022-07-21 08:58:19,890 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 349 places, 474 transitions, 2790 flow [2022-07-21 08:58:20,069 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 347 places, 474 transitions, 2763 flow, removed 2 selfloop flow, removed 2 redundant places. [2022-07-21 08:58:20,076 INFO L242 Difference]: Finished difference. Result has 352 places, 384 transitions, 2099 flow [2022-07-21 08:58:20,077 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=272, PETRI_DIFFERENCE_MINUEND_FLOW=1815, PETRI_DIFFERENCE_MINUEND_PLACES=338, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=371, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=327, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2099, PETRI_PLACES=352, PETRI_TRANSITIONS=384} [2022-07-21 08:58:20,078 INFO L279 CegarLoopForPetriNet]: 245 programPoint places, 107 predicate places. [2022-07-21 08:58:20,078 INFO L495 AbstractCegarLoop]: Abstraction has has 352 places, 384 transitions, 2099 flow [2022-07-21 08:58:20,079 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 225.14285714285714) internal successors, (1576), 7 states have internal predecessors, (1576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:20,079 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:58:20,079 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:58:20,079 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-21 08:58:20,080 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 08:58:20,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:58:20,080 INFO L85 PathProgramCache]: Analyzing trace with hash 1586049013, now seen corresponding path program 4 times [2022-07-21 08:58:20,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:58:20,080 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809107276] [2022-07-21 08:58:20,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:58:20,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:58:20,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:58:20,243 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2022-07-21 08:58:20,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:58:20,243 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1809107276] [2022-07-21 08:58:20,244 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1809107276] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:58:20,244 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:58:20,244 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 08:58:20,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434652965] [2022-07-21 08:58:20,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:58:20,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 08:58:20,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:58:20,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 08:58:20,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-07-21 08:58:20,247 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 222 out of 272 [2022-07-21 08:58:20,248 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 352 places, 384 transitions, 2099 flow. Second operand has 7 states, 7 states have (on average 225.14285714285714) internal successors, (1576), 7 states have internal predecessors, (1576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:20,248 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:58:20,248 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 222 of 272 [2022-07-21 08:58:20,248 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:58:21,548 INFO L129 PetriNetUnfolder]: 1121/7501 cut-off events. [2022-07-21 08:58:21,548 INFO L130 PetriNetUnfolder]: For 19206/19737 co-relation queries the response was YES. [2022-07-21 08:58:21,587 INFO L84 FinitePrefix]: Finished finitePrefix Result has 16732 conditions, 7501 events. 1121/7501 cut-off events. For 19206/19737 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 74022 event pairs, 360 based on Foata normal form. 121/7522 useless extension candidates. Maximal degree in co-relation 16680. Up to 946 conditions per place. [2022-07-21 08:58:21,607 INFO L132 encePairwiseOnDemand]: 257/272 looper letters, 115 selfloop transitions, 78 changer transitions 13/479 dead transitions. [2022-07-21 08:58:21,607 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 361 places, 479 transitions, 3260 flow [2022-07-21 08:58:21,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-21 08:58:21,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-07-21 08:58:21,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2336 transitions. [2022-07-21 08:58:21,610 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8588235294117647 [2022-07-21 08:58:21,611 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2336 transitions. [2022-07-21 08:58:21,611 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2336 transitions. [2022-07-21 08:58:21,612 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:58:21,612 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2336 transitions. [2022-07-21 08:58:21,615 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 233.6) internal successors, (2336), 10 states have internal predecessors, (2336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:21,618 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 272.0) internal successors, (2992), 11 states have internal predecessors, (2992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:21,618 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 272.0) internal successors, (2992), 11 states have internal predecessors, (2992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:21,619 INFO L186 Difference]: Start difference. First operand has 352 places, 384 transitions, 2099 flow. Second operand 10 states and 2336 transitions. [2022-07-21 08:58:21,619 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 361 places, 479 transitions, 3260 flow [2022-07-21 08:58:21,687 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 359 places, 479 transitions, 3232 flow, removed 1 selfloop flow, removed 2 redundant places. [2022-07-21 08:58:21,693 INFO L242 Difference]: Finished difference. Result has 367 places, 403 transitions, 2622 flow [2022-07-21 08:58:21,694 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=272, PETRI_DIFFERENCE_MINUEND_FLOW=2075, PETRI_DIFFERENCE_MINUEND_PLACES=350, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=384, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=318, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2622, PETRI_PLACES=367, PETRI_TRANSITIONS=403} [2022-07-21 08:58:21,694 INFO L279 CegarLoopForPetriNet]: 245 programPoint places, 122 predicate places. [2022-07-21 08:58:21,694 INFO L495 AbstractCegarLoop]: Abstraction has has 367 places, 403 transitions, 2622 flow [2022-07-21 08:58:21,695 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 225.14285714285714) internal successors, (1576), 7 states have internal predecessors, (1576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:21,695 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:58:21,695 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:58:21,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-21 08:58:21,696 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 08:58:21,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:58:21,696 INFO L85 PathProgramCache]: Analyzing trace with hash -355461643, now seen corresponding path program 5 times [2022-07-21 08:58:21,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:58:21,696 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301079319] [2022-07-21 08:58:21,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:58:21,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:58:21,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:58:21,829 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2022-07-21 08:58:21,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:58:21,830 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1301079319] [2022-07-21 08:58:21,830 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1301079319] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:58:21,830 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:58:21,830 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 08:58:21,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777590775] [2022-07-21 08:58:21,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:58:21,831 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 08:58:21,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:58:21,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 08:58:21,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-07-21 08:58:21,833 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 222 out of 272 [2022-07-21 08:58:21,834 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 367 places, 403 transitions, 2622 flow. Second operand has 7 states, 7 states have (on average 225.14285714285714) internal successors, (1576), 7 states have internal predecessors, (1576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:21,834 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:58:21,834 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 222 of 272 [2022-07-21 08:58:21,834 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:58:23,537 INFO L129 PetriNetUnfolder]: 1205/7916 cut-off events. [2022-07-21 08:58:23,537 INFO L130 PetriNetUnfolder]: For 29261/30189 co-relation queries the response was YES. [2022-07-21 08:58:23,571 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18800 conditions, 7916 events. 1205/7916 cut-off events. For 29261/30189 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 78466 event pairs, 454 based on Foata normal form. 139/7931 useless extension candidates. Maximal degree in co-relation 18741. Up to 836 conditions per place. [2022-07-21 08:58:23,592 INFO L132 encePairwiseOnDemand]: 260/272 looper letters, 148 selfloop transitions, 73 changer transitions 12/506 dead transitions. [2022-07-21 08:58:23,592 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 376 places, 506 transitions, 3838 flow [2022-07-21 08:58:23,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-21 08:58:23,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-07-21 08:58:23,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2345 transitions. [2022-07-21 08:58:23,596 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8621323529411765 [2022-07-21 08:58:23,596 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2345 transitions. [2022-07-21 08:58:23,596 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2345 transitions. [2022-07-21 08:58:23,597 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:58:23,597 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2345 transitions. [2022-07-21 08:58:23,600 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 234.5) internal successors, (2345), 10 states have internal predecessors, (2345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:23,603 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 272.0) internal successors, (2992), 11 states have internal predecessors, (2992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:23,603 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 272.0) internal successors, (2992), 11 states have internal predecessors, (2992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:23,604 INFO L186 Difference]: Start difference. First operand has 367 places, 403 transitions, 2622 flow. Second operand 10 states and 2345 transitions. [2022-07-21 08:58:23,604 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 376 places, 506 transitions, 3838 flow [2022-07-21 08:58:23,691 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 375 places, 506 transitions, 3804 flow, removed 10 selfloop flow, removed 1 redundant places. [2022-07-21 08:58:23,697 INFO L242 Difference]: Finished difference. Result has 381 places, 413 transitions, 3040 flow [2022-07-21 08:58:23,698 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=272, PETRI_DIFFERENCE_MINUEND_FLOW=2594, PETRI_DIFFERENCE_MINUEND_PLACES=366, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=403, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=333, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3040, PETRI_PLACES=381, PETRI_TRANSITIONS=413} [2022-07-21 08:58:23,699 INFO L279 CegarLoopForPetriNet]: 245 programPoint places, 136 predicate places. [2022-07-21 08:58:23,699 INFO L495 AbstractCegarLoop]: Abstraction has has 381 places, 413 transitions, 3040 flow [2022-07-21 08:58:23,699 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 225.14285714285714) internal successors, (1576), 7 states have internal predecessors, (1576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:23,700 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:58:23,700 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:58:23,700 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-21 08:58:23,700 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 08:58:23,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:58:23,701 INFO L85 PathProgramCache]: Analyzing trace with hash 1751499251, now seen corresponding path program 6 times [2022-07-21 08:58:23,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:58:23,701 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [427722838] [2022-07-21 08:58:23,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:58:23,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:58:23,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:58:23,810 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2022-07-21 08:58:23,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:58:23,811 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [427722838] [2022-07-21 08:58:23,811 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [427722838] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:58:23,811 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:58:23,811 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 08:58:23,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430036021] [2022-07-21 08:58:23,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:58:23,812 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 08:58:23,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:58:23,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 08:58:23,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-21 08:58:23,814 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 222 out of 272 [2022-07-21 08:58:23,815 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 381 places, 413 transitions, 3040 flow. Second operand has 7 states, 7 states have (on average 225.14285714285714) internal successors, (1576), 7 states have internal predecessors, (1576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:23,815 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:58:23,815 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 222 of 272 [2022-07-21 08:58:23,816 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:58:25,907 INFO L129 PetriNetUnfolder]: 1541/10742 cut-off events. [2022-07-21 08:58:25,907 INFO L130 PetriNetUnfolder]: For 41820/42653 co-relation queries the response was YES. [2022-07-21 08:58:25,965 INFO L84 FinitePrefix]: Finished finitePrefix Result has 25121 conditions, 10742 events. 1541/10742 cut-off events. For 41820/42653 co-relation queries the response was YES. Maximal size of possible extension queue 212. Compared 116995 event pairs, 350 based on Foata normal form. 199/10792 useless extension candidates. Maximal degree in co-relation 25056. Up to 1091 conditions per place. [2022-07-21 08:58:25,993 INFO L132 encePairwiseOnDemand]: 259/272 looper letters, 139 selfloop transitions, 89 changer transitions 8/509 dead transitions. [2022-07-21 08:58:25,993 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 391 places, 509 transitions, 4240 flow [2022-07-21 08:58:25,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-21 08:58:25,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-07-21 08:58:25,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2551 transitions. [2022-07-21 08:58:25,997 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8526069518716578 [2022-07-21 08:58:25,997 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2551 transitions. [2022-07-21 08:58:25,997 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2551 transitions. [2022-07-21 08:58:25,998 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:58:25,998 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2551 transitions. [2022-07-21 08:58:26,001 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 231.9090909090909) internal successors, (2551), 11 states have internal predecessors, (2551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:26,004 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 272.0) internal successors, (3264), 12 states have internal predecessors, (3264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:26,005 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 272.0) internal successors, (3264), 12 states have internal predecessors, (3264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:26,005 INFO L186 Difference]: Start difference. First operand has 381 places, 413 transitions, 3040 flow. Second operand 11 states and 2551 transitions. [2022-07-21 08:58:26,005 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 391 places, 509 transitions, 4240 flow [2022-07-21 08:58:26,135 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 385 places, 509 transitions, 4090 flow, removed 25 selfloop flow, removed 6 redundant places. [2022-07-21 08:58:26,142 INFO L242 Difference]: Finished difference. Result has 389 places, 436 transitions, 3575 flow [2022-07-21 08:58:26,143 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=272, PETRI_DIFFERENCE_MINUEND_FLOW=2924, PETRI_DIFFERENCE_MINUEND_PLACES=375, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=413, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=339, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3575, PETRI_PLACES=389, PETRI_TRANSITIONS=436} [2022-07-21 08:58:26,143 INFO L279 CegarLoopForPetriNet]: 245 programPoint places, 144 predicate places. [2022-07-21 08:58:26,143 INFO L495 AbstractCegarLoop]: Abstraction has has 389 places, 436 transitions, 3575 flow [2022-07-21 08:58:26,144 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 225.14285714285714) internal successors, (1576), 7 states have internal predecessors, (1576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:26,144 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:58:26,144 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:58:26,144 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-21 08:58:26,144 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 08:58:26,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:58:26,145 INFO L85 PathProgramCache]: Analyzing trace with hash 1014004619, now seen corresponding path program 7 times [2022-07-21 08:58:26,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:58:26,145 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1249175411] [2022-07-21 08:58:26,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:58:26,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:58:26,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:58:26,289 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2022-07-21 08:58:26,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:58:26,290 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1249175411] [2022-07-21 08:58:26,290 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1249175411] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:58:26,290 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:58:26,290 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 08:58:26,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037641861] [2022-07-21 08:58:26,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:58:26,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 08:58:26,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:58:26,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 08:58:26,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-21 08:58:26,303 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 222 out of 272 [2022-07-21 08:58:26,305 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 389 places, 436 transitions, 3575 flow. Second operand has 7 states, 7 states have (on average 225.14285714285714) internal successors, (1576), 7 states have internal predecessors, (1576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:26,305 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:58:26,305 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 222 of 272 [2022-07-21 08:58:26,305 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:58:28,855 INFO L129 PetriNetUnfolder]: 1784/12093 cut-off events. [2022-07-21 08:58:28,855 INFO L130 PetriNetUnfolder]: For 53317/54485 co-relation queries the response was YES. [2022-07-21 08:58:28,934 INFO L84 FinitePrefix]: Finished finitePrefix Result has 29036 conditions, 12093 events. 1784/12093 cut-off events. For 53317/54485 co-relation queries the response was YES. Maximal size of possible extension queue 229. Compared 134440 event pairs, 294 based on Foata normal form. 386/12323 useless extension candidates. Maximal degree in co-relation 28970. Up to 1087 conditions per place. [2022-07-21 08:58:28,967 INFO L132 encePairwiseOnDemand]: 252/272 looper letters, 134 selfloop transitions, 154 changer transitions 26/587 dead transitions. [2022-07-21 08:58:28,967 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 403 places, 587 transitions, 5556 flow [2022-07-21 08:58:28,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-21 08:58:28,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-07-21 08:58:28,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 3717 transitions. [2022-07-21 08:58:28,972 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8540900735294118 [2022-07-21 08:58:28,972 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 3717 transitions. [2022-07-21 08:58:28,972 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 3717 transitions. [2022-07-21 08:58:28,974 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:58:28,974 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 3717 transitions. [2022-07-21 08:58:28,979 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 232.3125) internal successors, (3717), 16 states have internal predecessors, (3717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:28,984 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 272.0) internal successors, (4624), 17 states have internal predecessors, (4624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:28,985 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 272.0) internal successors, (4624), 17 states have internal predecessors, (4624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:28,985 INFO L186 Difference]: Start difference. First operand has 389 places, 436 transitions, 3575 flow. Second operand 16 states and 3717 transitions. [2022-07-21 08:58:28,985 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 403 places, 587 transitions, 5556 flow [2022-07-21 08:58:29,141 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 398 places, 587 transitions, 5470 flow, removed 3 selfloop flow, removed 5 redundant places. [2022-07-21 08:58:29,149 INFO L242 Difference]: Finished difference. Result has 409 places, 498 transitions, 4756 flow [2022-07-21 08:58:29,150 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=272, PETRI_DIFFERENCE_MINUEND_FLOW=3508, PETRI_DIFFERENCE_MINUEND_PLACES=383, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=436, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=325, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=4756, PETRI_PLACES=409, PETRI_TRANSITIONS=498} [2022-07-21 08:58:29,151 INFO L279 CegarLoopForPetriNet]: 245 programPoint places, 164 predicate places. [2022-07-21 08:58:29,151 INFO L495 AbstractCegarLoop]: Abstraction has has 409 places, 498 transitions, 4756 flow [2022-07-21 08:58:29,151 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 225.14285714285714) internal successors, (1576), 7 states have internal predecessors, (1576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:29,151 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:58:29,152 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:58:29,152 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-21 08:58:29,152 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 08:58:29,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:58:29,153 INFO L85 PathProgramCache]: Analyzing trace with hash 231247173, now seen corresponding path program 8 times [2022-07-21 08:58:29,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:58:29,153 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886383662] [2022-07-21 08:58:29,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:58:29,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:58:29,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:58:29,282 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2022-07-21 08:58:29,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:58:29,282 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886383662] [2022-07-21 08:58:29,282 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [886383662] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:58:29,282 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:58:29,282 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 08:58:29,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159932387] [2022-07-21 08:58:29,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:58:29,283 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 08:58:29,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:58:29,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 08:58:29,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-07-21 08:58:29,285 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 222 out of 272 [2022-07-21 08:58:29,286 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 409 places, 498 transitions, 4756 flow. Second operand has 7 states, 7 states have (on average 225.14285714285714) internal successors, (1576), 7 states have internal predecessors, (1576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:29,286 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:58:29,287 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 222 of 272 [2022-07-21 08:58:29,287 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:58:31,804 INFO L129 PetriNetUnfolder]: 1772/11767 cut-off events. [2022-07-21 08:58:31,805 INFO L130 PetriNetUnfolder]: For 65687/67199 co-relation queries the response was YES. [2022-07-21 08:58:31,890 INFO L84 FinitePrefix]: Finished finitePrefix Result has 30931 conditions, 11767 events. 1772/11767 cut-off events. For 65687/67199 co-relation queries the response was YES. Maximal size of possible extension queue 220. Compared 128945 event pairs, 347 based on Foata normal form. 380/11984 useless extension candidates. Maximal degree in co-relation 30855. Up to 1150 conditions per place. [2022-07-21 08:58:31,915 INFO L132 encePairwiseOnDemand]: 258/272 looper letters, 156 selfloop transitions, 124 changer transitions 12/565 dead transitions. [2022-07-21 08:58:31,915 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 414 places, 565 transitions, 5866 flow [2022-07-21 08:58:31,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-21 08:58:31,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-07-21 08:58:31,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2560 transitions. [2022-07-21 08:58:31,919 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8556149732620321 [2022-07-21 08:58:31,919 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2560 transitions. [2022-07-21 08:58:31,919 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2560 transitions. [2022-07-21 08:58:31,920 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:58:31,920 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2560 transitions. [2022-07-21 08:58:31,923 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 232.72727272727272) internal successors, (2560), 11 states have internal predecessors, (2560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:31,926 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 272.0) internal successors, (3264), 12 states have internal predecessors, (3264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:31,926 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 272.0) internal successors, (3264), 12 states have internal predecessors, (3264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:31,927 INFO L186 Difference]: Start difference. First operand has 409 places, 498 transitions, 4756 flow. Second operand 11 states and 2560 transitions. [2022-07-21 08:58:31,927 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 414 places, 565 transitions, 5866 flow [2022-07-21 08:58:32,142 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 406 places, 565 transitions, 5765 flow, removed 26 selfloop flow, removed 8 redundant places. [2022-07-21 08:58:32,150 INFO L242 Difference]: Finished difference. Result has 410 places, 505 transitions, 5152 flow [2022-07-21 08:58:32,151 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=272, PETRI_DIFFERENCE_MINUEND_FLOW=4673, PETRI_DIFFERENCE_MINUEND_PLACES=396, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=498, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=117, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=380, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5152, PETRI_PLACES=410, PETRI_TRANSITIONS=505} [2022-07-21 08:58:32,151 INFO L279 CegarLoopForPetriNet]: 245 programPoint places, 165 predicate places. [2022-07-21 08:58:32,151 INFO L495 AbstractCegarLoop]: Abstraction has has 410 places, 505 transitions, 5152 flow [2022-07-21 08:58:32,152 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 225.14285714285714) internal successors, (1576), 7 states have internal predecessors, (1576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:32,152 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:58:32,152 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:58:32,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-21 08:58:32,153 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 08:58:32,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:58:32,153 INFO L85 PathProgramCache]: Analyzing trace with hash 877685243, now seen corresponding path program 9 times [2022-07-21 08:58:32,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:58:32,154 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1412000978] [2022-07-21 08:58:32,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:58:32,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:58:32,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:58:32,266 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2022-07-21 08:58:32,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:58:32,267 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1412000978] [2022-07-21 08:58:32,267 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1412000978] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:58:32,267 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:58:32,267 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 08:58:32,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13213082] [2022-07-21 08:58:32,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:58:32,268 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 08:58:32,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:58:32,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 08:58:32,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-07-21 08:58:32,270 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 222 out of 272 [2022-07-21 08:58:32,271 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 410 places, 505 transitions, 5152 flow. Second operand has 7 states, 7 states have (on average 225.14285714285714) internal successors, (1576), 7 states have internal predecessors, (1576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:32,271 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:58:32,272 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 222 of 272 [2022-07-21 08:58:32,272 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:58:34,947 INFO L129 PetriNetUnfolder]: 1805/12290 cut-off events. [2022-07-21 08:58:34,948 INFO L130 PetriNetUnfolder]: For 77053/78590 co-relation queries the response was YES. [2022-07-21 08:58:35,032 INFO L84 FinitePrefix]: Finished finitePrefix Result has 32726 conditions, 12290 events. 1805/12290 cut-off events. For 77053/78590 co-relation queries the response was YES. Maximal size of possible extension queue 219. Compared 136032 event pairs, 336 based on Foata normal form. 444/12583 useless extension candidates. Maximal degree in co-relation 32649. Up to 1927 conditions per place. [2022-07-21 08:58:35,058 INFO L132 encePairwiseOnDemand]: 256/272 looper letters, 165 selfloop transitions, 129 changer transitions 9/576 dead transitions. [2022-07-21 08:58:35,058 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 417 places, 576 transitions, 6413 flow [2022-07-21 08:58:35,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-21 08:58:35,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-07-21 08:58:35,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2319 transitions. [2022-07-21 08:58:35,061 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8525735294117647 [2022-07-21 08:58:35,061 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2319 transitions. [2022-07-21 08:58:35,061 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2319 transitions. [2022-07-21 08:58:35,062 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:58:35,062 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2319 transitions. [2022-07-21 08:58:35,065 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 231.9) internal successors, (2319), 10 states have internal predecessors, (2319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:35,068 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 272.0) internal successors, (2992), 11 states have internal predecessors, (2992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:35,069 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 272.0) internal successors, (2992), 11 states have internal predecessors, (2992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:35,069 INFO L186 Difference]: Start difference. First operand has 410 places, 505 transitions, 5152 flow. Second operand 10 states and 2319 transitions. [2022-07-21 08:58:35,069 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 417 places, 576 transitions, 6413 flow [2022-07-21 08:58:35,282 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 411 places, 576 transitions, 6228 flow, removed 2 selfloop flow, removed 6 redundant places. [2022-07-21 08:58:35,289 INFO L242 Difference]: Finished difference. Result has 415 places, 524 transitions, 5693 flow [2022-07-21 08:58:35,290 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=272, PETRI_DIFFERENCE_MINUEND_FLOW=4977, PETRI_DIFFERENCE_MINUEND_PLACES=402, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=505, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=114, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=388, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5693, PETRI_PLACES=415, PETRI_TRANSITIONS=524} [2022-07-21 08:58:35,290 INFO L279 CegarLoopForPetriNet]: 245 programPoint places, 170 predicate places. [2022-07-21 08:58:35,290 INFO L495 AbstractCegarLoop]: Abstraction has has 415 places, 524 transitions, 5693 flow [2022-07-21 08:58:35,291 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 225.14285714285714) internal successors, (1576), 7 states have internal predecessors, (1576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:35,291 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:58:35,291 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:58:35,292 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-21 08:58:35,292 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 08:58:35,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:58:35,292 INFO L85 PathProgramCache]: Analyzing trace with hash -4048551, now seen corresponding path program 10 times [2022-07-21 08:58:35,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:58:35,293 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2036445657] [2022-07-21 08:58:35,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:58:35,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:58:35,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:58:35,458 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2022-07-21 08:58:35,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:58:35,459 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2036445657] [2022-07-21 08:58:35,459 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2036445657] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:58:35,459 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:58:35,459 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 08:58:35,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089939297] [2022-07-21 08:58:35,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:58:35,462 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 08:58:35,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:58:35,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 08:58:35,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-21 08:58:35,464 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 222 out of 272 [2022-07-21 08:58:35,465 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 415 places, 524 transitions, 5693 flow. Second operand has 7 states, 7 states have (on average 225.14285714285714) internal successors, (1576), 7 states have internal predecessors, (1576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:35,465 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:58:35,465 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 222 of 272 [2022-07-21 08:58:35,465 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:58:38,297 INFO L129 PetriNetUnfolder]: 1810/12137 cut-off events. [2022-07-21 08:58:38,297 INFO L130 PetriNetUnfolder]: For 81005/82570 co-relation queries the response was YES. [2022-07-21 08:58:38,372 INFO L84 FinitePrefix]: Finished finitePrefix Result has 33108 conditions, 12137 events. 1810/12137 cut-off events. For 81005/82570 co-relation queries the response was YES. Maximal size of possible extension queue 217. Compared 133264 event pairs, 236 based on Foata normal form. 611/12600 useless extension candidates. Maximal degree in co-relation 33029. Up to 1726 conditions per place. [2022-07-21 08:58:38,396 INFO L132 encePairwiseOnDemand]: 250/272 looper letters, 132 selfloop transitions, 185 changer transitions 16/606 dead transitions. [2022-07-21 08:58:38,397 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 430 places, 606 transitions, 7132 flow [2022-07-21 08:58:38,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-21 08:58:38,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-07-21 08:58:38,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 3914 transitions. [2022-07-21 08:58:38,401 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8464532871972318 [2022-07-21 08:58:38,401 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 3914 transitions. [2022-07-21 08:58:38,401 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 3914 transitions. [2022-07-21 08:58:38,402 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:58:38,402 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 3914 transitions. [2022-07-21 08:58:38,406 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 230.23529411764707) internal successors, (3914), 17 states have internal predecessors, (3914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:38,411 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 272.0) internal successors, (4896), 18 states have internal predecessors, (4896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:38,411 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 272.0) internal successors, (4896), 18 states have internal predecessors, (4896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:38,411 INFO L186 Difference]: Start difference. First operand has 415 places, 524 transitions, 5693 flow. Second operand 17 states and 3914 transitions. [2022-07-21 08:58:38,411 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 430 places, 606 transitions, 7132 flow [2022-07-21 08:58:38,590 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 428 places, 606 transitions, 7049 flow, removed 38 selfloop flow, removed 2 redundant places. [2022-07-21 08:58:38,598 INFO L242 Difference]: Finished difference. Result has 435 places, 540 transitions, 6479 flow [2022-07-21 08:58:38,598 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=272, PETRI_DIFFERENCE_MINUEND_FLOW=5654, PETRI_DIFFERENCE_MINUEND_PLACES=412, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=524, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=171, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=350, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=6479, PETRI_PLACES=435, PETRI_TRANSITIONS=540} [2022-07-21 08:58:38,598 INFO L279 CegarLoopForPetriNet]: 245 programPoint places, 190 predicate places. [2022-07-21 08:58:38,598 INFO L495 AbstractCegarLoop]: Abstraction has has 435 places, 540 transitions, 6479 flow [2022-07-21 08:58:38,599 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 225.14285714285714) internal successors, (1576), 7 states have internal predecessors, (1576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:38,599 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:58:38,599 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:58:38,599 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-21 08:58:38,599 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 08:58:38,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:58:38,599 INFO L85 PathProgramCache]: Analyzing trace with hash 1652799699, now seen corresponding path program 1 times [2022-07-21 08:58:38,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:58:38,600 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640711095] [2022-07-21 08:58:38,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:58:38,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:58:38,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:58:38,708 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2022-07-21 08:58:38,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:58:38,708 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640711095] [2022-07-21 08:58:38,708 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1640711095] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:58:38,708 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:58:38,709 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-21 08:58:38,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888936185] [2022-07-21 08:58:38,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:58:38,709 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-21 08:58:38,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:58:38,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-21 08:58:38,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-07-21 08:58:38,711 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 222 out of 272 [2022-07-21 08:58:38,713 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 435 places, 540 transitions, 6479 flow. Second operand has 8 states, 8 states have (on average 224.75) internal successors, (1798), 8 states have internal predecessors, (1798), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:38,713 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:58:38,713 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 222 of 272 [2022-07-21 08:58:38,713 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:58:42,032 INFO L129 PetriNetUnfolder]: 2731/14564 cut-off events. [2022-07-21 08:58:42,032 INFO L130 PetriNetUnfolder]: For 61805/62749 co-relation queries the response was YES. [2022-07-21 08:58:42,324 INFO L84 FinitePrefix]: Finished finitePrefix Result has 37904 conditions, 14564 events. 2731/14564 cut-off events. For 61805/62749 co-relation queries the response was YES. Maximal size of possible extension queue 328. Compared 165399 event pairs, 1057 based on Foata normal form. 258/14634 useless extension candidates. Maximal degree in co-relation 37818. Up to 3434 conditions per place. [2022-07-21 08:58:42,355 INFO L132 encePairwiseOnDemand]: 265/272 looper letters, 130 selfloop transitions, 16 changer transitions 5/617 dead transitions. [2022-07-21 08:58:42,355 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 438 places, 617 transitions, 7172 flow [2022-07-21 08:58:42,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 08:58:42,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-07-21 08:58:42,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1634 transitions. [2022-07-21 08:58:42,357 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8581932773109243 [2022-07-21 08:58:42,357 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1634 transitions. [2022-07-21 08:58:42,357 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1634 transitions. [2022-07-21 08:58:42,357 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:58:42,357 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1634 transitions. [2022-07-21 08:58:42,359 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 233.42857142857142) internal successors, (1634), 7 states have internal predecessors, (1634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:42,361 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 272.0) internal successors, (2176), 8 states have internal predecessors, (2176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:42,361 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 272.0) internal successors, (2176), 8 states have internal predecessors, (2176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:42,361 INFO L186 Difference]: Start difference. First operand has 435 places, 540 transitions, 6479 flow. Second operand 7 states and 1634 transitions. [2022-07-21 08:58:42,361 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 438 places, 617 transitions, 7172 flow [2022-07-21 08:58:42,542 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 432 places, 617 transitions, 7011 flow, removed 7 selfloop flow, removed 6 redundant places. [2022-07-21 08:58:42,549 INFO L242 Difference]: Finished difference. Result has 436 places, 546 transitions, 6416 flow [2022-07-21 08:58:42,550 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=272, PETRI_DIFFERENCE_MINUEND_FLOW=6318, PETRI_DIFFERENCE_MINUEND_PLACES=426, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=540, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=524, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6416, PETRI_PLACES=436, PETRI_TRANSITIONS=546} [2022-07-21 08:58:42,550 INFO L279 CegarLoopForPetriNet]: 245 programPoint places, 191 predicate places. [2022-07-21 08:58:42,550 INFO L495 AbstractCegarLoop]: Abstraction has has 436 places, 546 transitions, 6416 flow [2022-07-21 08:58:42,551 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 224.75) internal successors, (1798), 8 states have internal predecessors, (1798), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:42,551 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:58:42,551 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:58:42,551 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-21 08:58:42,552 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 08:58:42,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:58:42,552 INFO L85 PathProgramCache]: Analyzing trace with hash 967671905, now seen corresponding path program 11 times [2022-07-21 08:58:42,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:58:42,552 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354608531] [2022-07-21 08:58:42,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:58:42,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:58:42,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:58:42,670 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2022-07-21 08:58:42,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:58:42,671 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1354608531] [2022-07-21 08:58:42,671 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1354608531] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:58:42,671 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:58:42,671 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 08:58:42,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534077110] [2022-07-21 08:58:42,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:58:42,673 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 08:58:42,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:58:42,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 08:58:42,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-07-21 08:58:42,675 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 222 out of 272 [2022-07-21 08:58:42,676 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 436 places, 546 transitions, 6416 flow. Second operand has 7 states, 7 states have (on average 225.14285714285714) internal successors, (1576), 7 states have internal predecessors, (1576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:42,676 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:58:42,676 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 222 of 272 [2022-07-21 08:58:42,676 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:58:45,977 INFO L129 PetriNetUnfolder]: 2191/15055 cut-off events. [2022-07-21 08:58:45,977 INFO L130 PetriNetUnfolder]: For 97614/99034 co-relation queries the response was YES. [2022-07-21 08:58:46,101 INFO L84 FinitePrefix]: Finished finitePrefix Result has 41424 conditions, 15055 events. 2191/15055 cut-off events. For 97614/99034 co-relation queries the response was YES. Maximal size of possible extension queue 294. Compared 173948 event pairs, 261 based on Foata normal form. 564/15427 useless extension candidates. Maximal degree in co-relation 41337. Up to 2387 conditions per place. [2022-07-21 08:58:46,141 INFO L132 encePairwiseOnDemand]: 252/272 looper letters, 172 selfloop transitions, 197 changer transitions 15/663 dead transitions. [2022-07-21 08:58:46,142 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 446 places, 663 transitions, 8732 flow [2022-07-21 08:58:46,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-21 08:58:46,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-07-21 08:58:46,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 3018 transitions. [2022-07-21 08:58:46,145 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8535067873303167 [2022-07-21 08:58:46,145 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 3018 transitions. [2022-07-21 08:58:46,145 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 3018 transitions. [2022-07-21 08:58:46,146 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:58:46,146 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 3018 transitions. [2022-07-21 08:58:46,150 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 232.15384615384616) internal successors, (3018), 13 states have internal predecessors, (3018), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:46,153 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 272.0) internal successors, (3808), 14 states have internal predecessors, (3808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:46,154 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 272.0) internal successors, (3808), 14 states have internal predecessors, (3808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:46,154 INFO L186 Difference]: Start difference. First operand has 436 places, 546 transitions, 6416 flow. Second operand 13 states and 3018 transitions. [2022-07-21 08:58:46,154 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 446 places, 663 transitions, 8732 flow [2022-07-21 08:58:46,403 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 442 places, 663 transitions, 8708 flow, removed 2 selfloop flow, removed 4 redundant places. [2022-07-21 08:58:46,412 INFO L242 Difference]: Finished difference. Result has 448 places, 593 transitions, 8158 flow [2022-07-21 08:58:46,413 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=272, PETRI_DIFFERENCE_MINUEND_FLOW=6392, PETRI_DIFFERENCE_MINUEND_PLACES=430, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=546, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=150, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=367, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=8158, PETRI_PLACES=448, PETRI_TRANSITIONS=593} [2022-07-21 08:58:46,414 INFO L279 CegarLoopForPetriNet]: 245 programPoint places, 203 predicate places. [2022-07-21 08:58:46,414 INFO L495 AbstractCegarLoop]: Abstraction has has 448 places, 593 transitions, 8158 flow [2022-07-21 08:58:46,414 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 225.14285714285714) internal successors, (1576), 7 states have internal predecessors, (1576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:46,414 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:58:46,414 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:58:46,415 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-07-21 08:58:46,415 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 08:58:46,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:58:46,415 INFO L85 PathProgramCache]: Analyzing trace with hash 1865901937, now seen corresponding path program 2 times [2022-07-21 08:58:46,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:58:46,416 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1360847749] [2022-07-21 08:58:46,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:58:46,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:58:46,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:58:46,531 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2022-07-21 08:58:46,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:58:46,531 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1360847749] [2022-07-21 08:58:46,531 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1360847749] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:58:46,531 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:58:46,532 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 08:58:46,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493189371] [2022-07-21 08:58:46,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:58:46,532 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 08:58:46,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:58:46,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 08:58:46,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-21 08:58:46,535 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 222 out of 272 [2022-07-21 08:58:46,536 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 448 places, 593 transitions, 8158 flow. Second operand has 7 states, 7 states have (on average 225.14285714285714) internal successors, (1576), 7 states have internal predecessors, (1576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:46,536 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:58:46,536 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 222 of 272 [2022-07-21 08:58:46,536 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:58:51,389 INFO L129 PetriNetUnfolder]: 3959/20995 cut-off events. [2022-07-21 08:58:51,389 INFO L130 PetriNetUnfolder]: For 103854/105080 co-relation queries the response was YES. [2022-07-21 08:58:51,647 INFO L84 FinitePrefix]: Finished finitePrefix Result has 57196 conditions, 20995 events. 3959/20995 cut-off events. For 103854/105080 co-relation queries the response was YES. Maximal size of possible extension queue 489. Compared 259189 event pairs, 1293 based on Foata normal form. 442/21242 useless extension candidates. Maximal degree in co-relation 57106. Up to 4525 conditions per place. [2022-07-21 08:58:51,888 INFO L132 encePairwiseOnDemand]: 262/272 looper letters, 121 selfloop transitions, 35 changer transitions 3/672 dead transitions. [2022-07-21 08:58:51,889 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 452 places, 672 transitions, 8887 flow [2022-07-21 08:58:51,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 08:58:51,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-07-21 08:58:51,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1641 transitions. [2022-07-21 08:58:51,890 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8618697478991597 [2022-07-21 08:58:51,890 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1641 transitions. [2022-07-21 08:58:51,890 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1641 transitions. [2022-07-21 08:58:51,891 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:58:51,891 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1641 transitions. [2022-07-21 08:58:51,893 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 234.42857142857142) internal successors, (1641), 7 states have internal predecessors, (1641), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:51,894 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 272.0) internal successors, (2176), 8 states have internal predecessors, (2176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:51,895 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 272.0) internal successors, (2176), 8 states have internal predecessors, (2176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:51,895 INFO L186 Difference]: Start difference. First operand has 448 places, 593 transitions, 8158 flow. Second operand 7 states and 1641 transitions. [2022-07-21 08:58:51,895 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 452 places, 672 transitions, 8887 flow [2022-07-21 08:58:52,281 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 446 places, 672 transitions, 8820 flow, removed 13 selfloop flow, removed 6 redundant places. [2022-07-21 08:58:52,290 INFO L242 Difference]: Finished difference. Result has 450 places, 610 transitions, 8362 flow [2022-07-21 08:58:52,290 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=272, PETRI_DIFFERENCE_MINUEND_FLOW=8091, PETRI_DIFFERENCE_MINUEND_PLACES=440, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=593, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=562, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=8362, PETRI_PLACES=450, PETRI_TRANSITIONS=610} [2022-07-21 08:58:52,290 INFO L279 CegarLoopForPetriNet]: 245 programPoint places, 205 predicate places. [2022-07-21 08:58:52,291 INFO L495 AbstractCegarLoop]: Abstraction has has 450 places, 610 transitions, 8362 flow [2022-07-21 08:58:52,291 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 225.14285714285714) internal successors, (1576), 7 states have internal predecessors, (1576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:52,291 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:58:52,291 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:58:52,291 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-07-21 08:58:52,291 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 08:58:52,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:58:52,292 INFO L85 PathProgramCache]: Analyzing trace with hash 320403445, now seen corresponding path program 3 times [2022-07-21 08:58:52,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:58:52,292 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1343118270] [2022-07-21 08:58:52,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:58:52,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:58:52,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:58:52,416 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2022-07-21 08:58:52,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:58:52,417 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1343118270] [2022-07-21 08:58:52,417 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1343118270] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:58:52,417 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:58:52,417 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 08:58:52,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599702659] [2022-07-21 08:58:52,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:58:52,418 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 08:58:52,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:58:52,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 08:58:52,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-07-21 08:58:52,420 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 222 out of 272 [2022-07-21 08:58:52,421 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 450 places, 610 transitions, 8362 flow. Second operand has 7 states, 7 states have (on average 225.14285714285714) internal successors, (1576), 7 states have internal predecessors, (1576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:52,421 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:58:52,421 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 222 of 272 [2022-07-21 08:58:52,421 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:58:58,171 INFO L129 PetriNetUnfolder]: 4318/24222 cut-off events. [2022-07-21 08:58:58,171 INFO L130 PetriNetUnfolder]: For 136209/138388 co-relation queries the response was YES. [2022-07-21 08:58:58,478 INFO L84 FinitePrefix]: Finished finitePrefix Result has 69011 conditions, 24222 events. 4318/24222 cut-off events. For 136209/138388 co-relation queries the response was YES. Maximal size of possible extension queue 522. Compared 309001 event pairs, 1252 based on Foata normal form. 820/24816 useless extension candidates. Maximal degree in co-relation 68921. Up to 3358 conditions per place. [2022-07-21 08:58:58,544 INFO L132 encePairwiseOnDemand]: 258/272 looper letters, 106 selfloop transitions, 76 changer transitions 4/699 dead transitions. [2022-07-21 08:58:58,545 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 461 places, 699 transitions, 9404 flow [2022-07-21 08:58:58,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-21 08:58:58,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-07-21 08:58:58,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 3239 transitions. [2022-07-21 08:58:58,548 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.850577731092437 [2022-07-21 08:58:58,548 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 3239 transitions. [2022-07-21 08:58:58,548 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 3239 transitions. [2022-07-21 08:58:58,549 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:58:58,549 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 3239 transitions. [2022-07-21 08:58:58,552 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 231.35714285714286) internal successors, (3239), 14 states have internal predecessors, (3239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:58,555 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 272.0) internal successors, (4080), 15 states have internal predecessors, (4080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:58,556 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 272.0) internal successors, (4080), 15 states have internal predecessors, (4080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:58,556 INFO L186 Difference]: Start difference. First operand has 450 places, 610 transitions, 8362 flow. Second operand 14 states and 3239 transitions. [2022-07-21 08:58:58,556 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 461 places, 699 transitions, 9404 flow [2022-07-21 08:58:59,233 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 458 places, 699 transitions, 9362 flow, removed 2 selfloop flow, removed 3 redundant places. [2022-07-21 08:58:59,242 INFO L242 Difference]: Finished difference. Result has 468 places, 624 transitions, 8797 flow [2022-07-21 08:58:59,242 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=272, PETRI_DIFFERENCE_MINUEND_FLOW=8314, PETRI_DIFFERENCE_MINUEND_PLACES=445, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=607, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=544, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=8797, PETRI_PLACES=468, PETRI_TRANSITIONS=624} [2022-07-21 08:58:59,243 INFO L279 CegarLoopForPetriNet]: 245 programPoint places, 223 predicate places. [2022-07-21 08:58:59,243 INFO L495 AbstractCegarLoop]: Abstraction has has 468 places, 624 transitions, 8797 flow [2022-07-21 08:58:59,243 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 225.14285714285714) internal successors, (1576), 7 states have internal predecessors, (1576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:59,243 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:58:59,243 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:58:59,244 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-07-21 08:58:59,244 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 08:58:59,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:58:59,244 INFO L85 PathProgramCache]: Analyzing trace with hash -789420411, now seen corresponding path program 4 times [2022-07-21 08:58:59,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:58:59,244 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600481951] [2022-07-21 08:58:59,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:58:59,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:58:59,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:58:59,353 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2022-07-21 08:58:59,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:58:59,353 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [600481951] [2022-07-21 08:58:59,354 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [600481951] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:58:59,354 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:58:59,354 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 08:58:59,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431680676] [2022-07-21 08:58:59,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:58:59,355 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 08:58:59,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:58:59,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 08:58:59,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-07-21 08:58:59,357 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 222 out of 272 [2022-07-21 08:58:59,358 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 468 places, 624 transitions, 8797 flow. Second operand has 7 states, 7 states have (on average 225.14285714285714) internal successors, (1576), 7 states have internal predecessors, (1576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:59,358 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:58:59,358 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 222 of 272 [2022-07-21 08:58:59,358 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand