./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/unroll-4.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 791161d1 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/unroll-4.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 7071c3ff0bb3d9f81f254bc51d27ce3551a85cc081b1b878560a7d4c8f67639e --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-22 21:59:29,840 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 21:59:29,841 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 21:59:29,877 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 21:59:29,877 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 21:59:29,878 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 21:59:29,881 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 21:59:29,886 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 21:59:29,888 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 21:59:29,894 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 21:59:29,895 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 21:59:29,898 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 21:59:29,898 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 21:59:29,900 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 21:59:29,902 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 21:59:29,906 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 21:59:29,906 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 21:59:29,908 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 21:59:29,910 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 21:59:29,913 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 21:59:29,916 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 21:59:29,917 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 21:59:29,918 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 21:59:29,918 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 21:59:29,920 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 21:59:29,925 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 21:59:29,925 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 21:59:29,925 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 21:59:29,926 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 21:59:29,927 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 21:59:29,928 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 21:59:29,928 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 21:59:29,929 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 21:59:29,930 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 21:59:29,930 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 21:59:29,931 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 21:59:29,931 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 21:59:29,932 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 21:59:29,932 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 21:59:29,932 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 21:59:29,934 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 21:59:29,935 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 21:59:29,936 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-22 21:59:29,970 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 21:59:29,972 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 21:59:29,972 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 21:59:29,973 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 21:59:29,973 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-22 21:59:29,973 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-22 21:59:29,974 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 21:59:29,974 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 21:59:29,974 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 21:59:29,975 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 21:59:29,976 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-22 21:59:29,976 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-22 21:59:29,976 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-22 21:59:29,976 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 21:59:29,976 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-22 21:59:29,977 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-22 21:59:29,977 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-22 21:59:29,977 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-22 21:59:29,977 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 21:59:29,979 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 21:59:29,979 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-22 21:59:29,979 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 21:59:29,980 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 21:59:29,980 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-22 21:59:29,980 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 21:59:29,980 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 21:59:29,981 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-22 21:59:29,981 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-22 21:59:29,981 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-22 21:59:29,981 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-22 21:59:29,981 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-22 21:59:29,982 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-22 21:59:29,982 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-22 21:59:29,982 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7071c3ff0bb3d9f81f254bc51d27ce3551a85cc081b1b878560a7d4c8f67639e [2022-07-22 21:59:30,211 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 21:59:30,236 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 21:59:30,239 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 21:59:30,240 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 21:59:30,240 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 21:59:30,242 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/unroll-4.wvr.c [2022-07-22 21:59:30,298 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b6f7657d6/64f1bc49a26540e58b64693727f7a637/FLAG02f1ec709 [2022-07-22 21:59:30,750 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 21:59:30,751 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/unroll-4.wvr.c [2022-07-22 21:59:30,758 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b6f7657d6/64f1bc49a26540e58b64693727f7a637/FLAG02f1ec709 [2022-07-22 21:59:30,780 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b6f7657d6/64f1bc49a26540e58b64693727f7a637 [2022-07-22 21:59:30,783 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 21:59:30,785 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 21:59:30,786 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 21:59:30,787 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 21:59:30,790 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 21:59:30,791 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 09:59:30" (1/1) ... [2022-07-22 21:59:30,792 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ec0133c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:59:30, skipping insertion in model container [2022-07-22 21:59:30,792 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 09:59:30" (1/1) ... [2022-07-22 21:59:30,800 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 21:59:30,837 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 21:59:31,021 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/unroll-4.wvr.c[2572,2585] [2022-07-22 21:59:31,028 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 21:59:31,035 INFO L203 MainTranslator]: Completed pre-run [2022-07-22 21:59:31,055 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/unroll-4.wvr.c[2572,2585] [2022-07-22 21:59:31,059 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 21:59:31,074 INFO L208 MainTranslator]: Completed translation [2022-07-22 21:59:31,074 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:59:31 WrapperNode [2022-07-22 21:59:31,074 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-22 21:59:31,075 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-22 21:59:31,076 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-22 21:59:31,076 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-22 21:59:31,087 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:59:31" (1/1) ... [2022-07-22 21:59:31,107 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:59:31" (1/1) ... [2022-07-22 21:59:31,126 INFO L137 Inliner]: procedures = 24, calls = 36, calls flagged for inlining = 13, calls inlined = 13, statements flattened = 154 [2022-07-22 21:59:31,127 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-22 21:59:31,128 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-22 21:59:31,128 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-22 21:59:31,128 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-22 21:59:31,136 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:59:31" (1/1) ... [2022-07-22 21:59:31,136 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:59:31" (1/1) ... [2022-07-22 21:59:31,148 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:59:31" (1/1) ... [2022-07-22 21:59:31,148 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:59:31" (1/1) ... [2022-07-22 21:59:31,157 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:59:31" (1/1) ... [2022-07-22 21:59:31,164 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:59:31" (1/1) ... [2022-07-22 21:59:31,166 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:59:31" (1/1) ... [2022-07-22 21:59:31,168 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-22 21:59:31,169 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-22 21:59:31,169 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-22 21:59:31,169 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-22 21:59:31,170 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:59:31" (1/1) ... [2022-07-22 21:59:31,186 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 21:59:31,198 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 21:59:31,211 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) [2022-07-22 21:59:31,243 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 [2022-07-22 21:59:31,257 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-22 21:59:31,258 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-07-22 21:59:31,258 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-07-22 21:59:31,259 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-07-22 21:59:31,259 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-07-22 21:59:31,259 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-22 21:59:31,259 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-22 21:59:31,259 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-22 21:59:31,259 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-22 21:59:31,260 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-22 21:59:31,260 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-22 21:59:31,260 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-22 21:59:31,261 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-22 21:59:31,262 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-07-22 21:59:31,428 INFO L234 CfgBuilder]: Building ICFG [2022-07-22 21:59:31,430 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-22 21:59:31,779 INFO L275 CfgBuilder]: Performing block encoding [2022-07-22 21:59:31,792 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-22 21:59:31,792 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2022-07-22 21:59:31,795 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 09:59:31 BoogieIcfgContainer [2022-07-22 21:59:31,795 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-22 21:59:31,797 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-22 21:59:31,797 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-22 21:59:31,801 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-22 21:59:31,801 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 09:59:30" (1/3) ... [2022-07-22 21:59:31,802 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6692e1e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 09:59:31, skipping insertion in model container [2022-07-22 21:59:31,802 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:59:31" (2/3) ... [2022-07-22 21:59:31,803 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6692e1e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 09:59:31, skipping insertion in model container [2022-07-22 21:59:31,803 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 09:59:31" (3/3) ... [2022-07-22 21:59:31,805 INFO L111 eAbstractionObserver]: Analyzing ICFG unroll-4.wvr.c [2022-07-22 21:59:31,810 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-22 21:59:31,819 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-22 21:59:31,819 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-22 21:59:31,819 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-22 21:59:31,895 INFO L135 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-07-22 21:59:31,927 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 190 places, 199 transitions, 414 flow [2022-07-22 21:59:32,023 INFO L129 PetriNetUnfolder]: 16/197 cut-off events. [2022-07-22 21:59:32,023 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-07-22 21:59:32,029 INFO L84 FinitePrefix]: Finished finitePrefix Result has 206 conditions, 197 events. 16/197 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 171 event pairs, 0 based on Foata normal form. 0/180 useless extension candidates. Maximal degree in co-relation 110. Up to 2 conditions per place. [2022-07-22 21:59:32,029 INFO L82 GeneralOperation]: Start removeDead. Operand has 190 places, 199 transitions, 414 flow [2022-07-22 21:59:32,040 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 179 places, 188 transitions, 388 flow [2022-07-22 21:59:32,058 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 21:59:32,067 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@65d870f5, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@73bd5363 [2022-07-22 21:59:32,067 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-07-22 21:59:32,103 INFO L129 PetriNetUnfolder]: 13/155 cut-off events. [2022-07-22 21:59:32,103 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-07-22 21:59:32,103 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:59:32,104 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] [2022-07-22 21:59:32,104 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-22 21:59:32,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:59:32,108 INFO L85 PathProgramCache]: Analyzing trace with hash -973515238, now seen corresponding path program 1 times [2022-07-22 21:59:32,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:59:32,117 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352647639] [2022-07-22 21:59:32,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:59:32,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:59:32,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:59:32,374 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:59:32,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:59:32,375 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [352647639] [2022-07-22 21:59:32,375 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [352647639] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:59:32,375 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:59:32,376 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-22 21:59:32,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197176285] [2022-07-22 21:59:32,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:59:32,386 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-22 21:59:32,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:59:32,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-22 21:59:32,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-22 21:59:32,421 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 181 out of 199 [2022-07-22 21:59:32,427 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 188 transitions, 388 flow. Second operand has 2 states, 2 states have (on average 183.5) internal successors, (367), 2 states have internal predecessors, (367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:59:32,427 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:59:32,428 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 181 of 199 [2022-07-22 21:59:32,430 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:59:32,494 INFO L129 PetriNetUnfolder]: 3/175 cut-off events. [2022-07-22 21:59:32,494 INFO L130 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2022-07-22 21:59:32,496 INFO L84 FinitePrefix]: Finished finitePrefix Result has 189 conditions, 175 events. 3/175 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 139 event pairs, 0 based on Foata normal form. 16/178 useless extension candidates. Maximal degree in co-relation 104. Up to 5 conditions per place. [2022-07-22 21:59:32,498 INFO L132 encePairwiseOnDemand]: 186/199 looper letters, 4 selfloop transitions, 0 changer transitions 5/175 dead transitions. [2022-07-22 21:59:32,498 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 175 transitions, 370 flow [2022-07-22 21:59:32,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-22 21:59:32,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-07-22 21:59:32,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 379 transitions. [2022-07-22 21:59:32,519 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9522613065326633 [2022-07-22 21:59:32,520 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 379 transitions. [2022-07-22 21:59:32,521 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 379 transitions. [2022-07-22 21:59:32,524 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:59:32,526 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 379 transitions. [2022-07-22 21:59:32,531 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 189.5) internal successors, (379), 2 states have internal predecessors, (379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:59:32,538 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 199.0) internal successors, (597), 3 states have internal predecessors, (597), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:59:32,539 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 199.0) internal successors, (597), 3 states have internal predecessors, (597), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:59:32,540 INFO L186 Difference]: Start difference. First operand has 179 places, 188 transitions, 388 flow. Second operand 2 states and 379 transitions. [2022-07-22 21:59:32,541 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 175 transitions, 370 flow [2022-07-22 21:59:32,545 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 175 transitions, 362 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-07-22 21:59:32,550 INFO L242 Difference]: Finished difference. Result has 176 places, 170 transitions, 344 flow [2022-07-22 21:59:32,552 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=199, PETRI_DIFFERENCE_MINUEND_FLOW=354, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=344, PETRI_PLACES=176, PETRI_TRANSITIONS=170} [2022-07-22 21:59:32,555 INFO L279 CegarLoopForPetriNet]: 179 programPoint places, -3 predicate places. [2022-07-22 21:59:32,556 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 170 transitions, 344 flow [2022-07-22 21:59:32,556 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 183.5) internal successors, (367), 2 states have internal predecessors, (367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:59:32,557 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:59:32,558 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] [2022-07-22 21:59:32,558 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-22 21:59:32,558 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-22 21:59:32,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:59:32,559 INFO L85 PathProgramCache]: Analyzing trace with hash -366624895, now seen corresponding path program 1 times [2022-07-22 21:59:32,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:59:32,561 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [111260732] [2022-07-22 21:59:32,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:59:32,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:59:32,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:59:32,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:59:32,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:59:32,846 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [111260732] [2022-07-22 21:59:32,847 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [111260732] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:59:32,847 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:59:32,847 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-22 21:59:32,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857144385] [2022-07-22 21:59:32,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:59:32,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-22 21:59:32,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:59:32,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-22 21:59:32,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-07-22 21:59:32,858 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 139 out of 199 [2022-07-22 21:59:32,860 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 170 transitions, 344 flow. Second operand has 8 states, 8 states have (on average 143.0) internal successors, (1144), 8 states have internal predecessors, (1144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:59:32,860 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:59:32,860 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 139 of 199 [2022-07-22 21:59:32,860 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:59:33,040 INFO L129 PetriNetUnfolder]: 22/292 cut-off events. [2022-07-22 21:59:33,040 INFO L130 PetriNetUnfolder]: For 11/11 co-relation queries the response was YES. [2022-07-22 21:59:33,043 INFO L84 FinitePrefix]: Finished finitePrefix Result has 371 conditions, 292 events. 22/292 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 638 event pairs, 9 based on Foata normal form. 0/267 useless extension candidates. Maximal degree in co-relation 368. Up to 61 conditions per place. [2022-07-22 21:59:33,044 INFO L132 encePairwiseOnDemand]: 191/199 looper letters, 38 selfloop transitions, 7 changer transitions 0/174 dead transitions. [2022-07-22 21:59:33,044 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 174 transitions, 442 flow [2022-07-22 21:59:33,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-22 21:59:33,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-07-22 21:59:33,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1158 transitions. [2022-07-22 21:59:33,049 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7273869346733668 [2022-07-22 21:59:33,049 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1158 transitions. [2022-07-22 21:59:33,049 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1158 transitions. [2022-07-22 21:59:33,050 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:59:33,050 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1158 transitions. [2022-07-22 21:59:33,053 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 144.75) internal successors, (1158), 8 states have internal predecessors, (1158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:59:33,058 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 199.0) internal successors, (1791), 9 states have internal predecessors, (1791), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:59:33,059 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 199.0) internal successors, (1791), 9 states have internal predecessors, (1791), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:59:33,059 INFO L186 Difference]: Start difference. First operand has 176 places, 170 transitions, 344 flow. Second operand 8 states and 1158 transitions. [2022-07-22 21:59:33,059 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 174 transitions, 442 flow [2022-07-22 21:59:33,062 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 174 transitions, 442 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-07-22 21:59:33,077 INFO L242 Difference]: Finished difference. Result has 179 places, 171 transitions, 366 flow [2022-07-22 21:59:33,078 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=199, PETRI_DIFFERENCE_MINUEND_FLOW=344, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=170, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=366, PETRI_PLACES=179, PETRI_TRANSITIONS=171} [2022-07-22 21:59:33,078 INFO L279 CegarLoopForPetriNet]: 179 programPoint places, 0 predicate places. [2022-07-22 21:59:33,079 INFO L495 AbstractCegarLoop]: Abstraction has has 179 places, 171 transitions, 366 flow [2022-07-22 21:59:33,079 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 143.0) internal successors, (1144), 8 states have internal predecessors, (1144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:59:33,079 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:59:33,080 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] [2022-07-22 21:59:33,080 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-22 21:59:33,080 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-22 21:59:33,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:59:33,081 INFO L85 PathProgramCache]: Analyzing trace with hash 1168250419, now seen corresponding path program 1 times [2022-07-22 21:59:33,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:59:33,081 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [221331507] [2022-07-22 21:59:33,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:59:33,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:59:33,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:59:33,250 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-22 21:59:33,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:59:33,252 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [221331507] [2022-07-22 21:59:33,253 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [221331507] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:59:33,253 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:59:33,253 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 21:59:33,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385236280] [2022-07-22 21:59:33,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:59:33,255 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 21:59:33,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:59:33,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 21:59:33,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-22 21:59:33,259 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 139 out of 199 [2022-07-22 21:59:33,260 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 171 transitions, 366 flow. Second operand has 6 states, 6 states have (on average 143.33333333333334) internal successors, (860), 6 states have internal predecessors, (860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:59:33,260 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:59:33,260 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 139 of 199 [2022-07-22 21:59:33,261 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:59:33,522 INFO L129 PetriNetUnfolder]: 121/786 cut-off events. [2022-07-22 21:59:33,522 INFO L130 PetriNetUnfolder]: For 34/34 co-relation queries the response was YES. [2022-07-22 21:59:33,523 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1078 conditions, 786 events. 121/786 cut-off events. For 34/34 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 4220 event pairs, 38 based on Foata normal form. 1/731 useless extension candidates. Maximal degree in co-relation 1073. Up to 133 conditions per place. [2022-07-22 21:59:33,526 INFO L132 encePairwiseOnDemand]: 192/199 looper letters, 65 selfloop transitions, 5 changer transitions 4/204 dead transitions. [2022-07-22 21:59:33,526 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 204 transitions, 585 flow [2022-07-22 21:59:33,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-22 21:59:33,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-07-22 21:59:33,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 909 transitions. [2022-07-22 21:59:33,528 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7613065326633166 [2022-07-22 21:59:33,529 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 909 transitions. [2022-07-22 21:59:33,529 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 909 transitions. [2022-07-22 21:59:33,529 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:59:33,529 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 909 transitions. [2022-07-22 21:59:33,532 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 151.5) internal successors, (909), 6 states have internal predecessors, (909), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:59:33,534 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 199.0) internal successors, (1393), 7 states have internal predecessors, (1393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:59:33,535 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 199.0) internal successors, (1393), 7 states have internal predecessors, (1393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:59:33,535 INFO L186 Difference]: Start difference. First operand has 179 places, 171 transitions, 366 flow. Second operand 6 states and 909 transitions. [2022-07-22 21:59:33,535 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 204 transitions, 585 flow [2022-07-22 21:59:33,537 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 204 transitions, 573 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-07-22 21:59:33,539 INFO L242 Difference]: Finished difference. Result has 181 places, 174 transitions, 383 flow [2022-07-22 21:59:33,540 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=199, PETRI_DIFFERENCE_MINUEND_FLOW=354, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=383, PETRI_PLACES=181, PETRI_TRANSITIONS=174} [2022-07-22 21:59:33,540 INFO L279 CegarLoopForPetriNet]: 179 programPoint places, 2 predicate places. [2022-07-22 21:59:33,541 INFO L495 AbstractCegarLoop]: Abstraction has has 181 places, 174 transitions, 383 flow [2022-07-22 21:59:33,541 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 143.33333333333334) internal successors, (860), 6 states have internal predecessors, (860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:59:33,541 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:59:33,541 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] [2022-07-22 21:59:33,542 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-22 21:59:33,542 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-22 21:59:33,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:59:33,542 INFO L85 PathProgramCache]: Analyzing trace with hash -720647426, now seen corresponding path program 1 times [2022-07-22 21:59:33,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:59:33,543 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [311864325] [2022-07-22 21:59:33,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:59:33,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:59:33,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:59:33,679 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-22 21:59:33,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:59:33,679 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [311864325] [2022-07-22 21:59:33,680 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [311864325] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 21:59:33,680 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1535754884] [2022-07-22 21:59:33,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:59:33,680 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 21:59:33,680 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 21:59:33,682 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) [2022-07-22 21:59:33,711 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-22 21:59:33,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:59:33,809 INFO L263 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-22 21:59:33,815 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 21:59:33,915 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-22 21:59:33,915 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 21:59:34,011 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-22 21:59:34,011 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1535754884] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-22 21:59:34,012 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-07-22 21:59:34,012 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6, 5] total 9 [2022-07-22 21:59:34,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826538836] [2022-07-22 21:59:34,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:59:34,013 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 21:59:34,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:59:34,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 21:59:34,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-07-22 21:59:34,014 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 165 out of 199 [2022-07-22 21:59:34,015 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 174 transitions, 383 flow. Second operand has 4 states, 4 states have (on average 167.75) internal successors, (671), 4 states have internal predecessors, (671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:59:34,015 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:59:34,015 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 165 of 199 [2022-07-22 21:59:34,016 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:59:34,170 INFO L129 PetriNetUnfolder]: 112/822 cut-off events. [2022-07-22 21:59:34,170 INFO L130 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2022-07-22 21:59:34,173 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1089 conditions, 822 events. 112/822 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 4265 event pairs, 13 based on Foata normal form. 0/723 useless extension candidates. Maximal degree in co-relation 1081. Up to 143 conditions per place. [2022-07-22 21:59:34,175 INFO L132 encePairwiseOnDemand]: 194/199 looper letters, 26 selfloop transitions, 5 changer transitions 1/186 dead transitions. [2022-07-22 21:59:34,175 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 186 transitions, 475 flow [2022-07-22 21:59:34,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 21:59:34,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-07-22 21:59:34,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 693 transitions. [2022-07-22 21:59:34,177 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8706030150753769 [2022-07-22 21:59:34,178 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 693 transitions. [2022-07-22 21:59:34,178 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 693 transitions. [2022-07-22 21:59:34,178 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:59:34,178 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 693 transitions. [2022-07-22 21:59:34,180 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 173.25) internal successors, (693), 4 states have internal predecessors, (693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:59:34,182 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 199.0) internal successors, (995), 5 states have internal predecessors, (995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:59:34,182 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 199.0) internal successors, (995), 5 states have internal predecessors, (995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:59:34,182 INFO L186 Difference]: Start difference. First operand has 181 places, 174 transitions, 383 flow. Second operand 4 states and 693 transitions. [2022-07-22 21:59:34,182 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 186 transitions, 475 flow [2022-07-22 21:59:34,184 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 186 transitions, 471 flow, removed 2 selfloop flow, removed 2 redundant places. [2022-07-22 21:59:34,187 INFO L242 Difference]: Finished difference. Result has 183 places, 178 transitions, 415 flow [2022-07-22 21:59:34,187 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=199, PETRI_DIFFERENCE_MINUEND_FLOW=379, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=415, PETRI_PLACES=183, PETRI_TRANSITIONS=178} [2022-07-22 21:59:34,188 INFO L279 CegarLoopForPetriNet]: 179 programPoint places, 4 predicate places. [2022-07-22 21:59:34,188 INFO L495 AbstractCegarLoop]: Abstraction has has 183 places, 178 transitions, 415 flow [2022-07-22 21:59:34,189 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 167.75) internal successors, (671), 4 states have internal predecessors, (671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:59:34,189 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:59:34,189 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] [2022-07-22 21:59:34,220 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-22 21:59:34,414 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 [2022-07-22 21:59:34,415 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-22 21:59:34,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:59:34,415 INFO L85 PathProgramCache]: Analyzing trace with hash -257953500, now seen corresponding path program 2 times [2022-07-22 21:59:34,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:59:34,416 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011800801] [2022-07-22 21:59:34,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:59:34,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:59:34,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:59:34,532 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-22 21:59:34,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:59:34,532 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011800801] [2022-07-22 21:59:34,533 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2011800801] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:59:34,533 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:59:34,533 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 21:59:34,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236526916] [2022-07-22 21:59:34,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:59:34,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 21:59:34,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:59:34,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 21:59:34,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 21:59:34,535 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 165 out of 199 [2022-07-22 21:59:34,536 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 178 transitions, 415 flow. Second operand has 4 states, 4 states have (on average 167.75) internal successors, (671), 4 states have internal predecessors, (671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:59:34,536 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:59:34,536 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 165 of 199 [2022-07-22 21:59:34,536 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:59:34,696 INFO L129 PetriNetUnfolder]: 128/916 cut-off events. [2022-07-22 21:59:34,696 INFO L130 PetriNetUnfolder]: For 164/164 co-relation queries the response was YES. [2022-07-22 21:59:34,699 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1365 conditions, 916 events. 128/916 cut-off events. For 164/164 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 4738 event pairs, 46 based on Foata normal form. 2/864 useless extension candidates. Maximal degree in co-relation 1356. Up to 189 conditions per place. [2022-07-22 21:59:34,702 INFO L132 encePairwiseOnDemand]: 193/199 looper letters, 29 selfloop transitions, 6 changer transitions 0/189 dead transitions. [2022-07-22 21:59:34,703 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 189 transitions, 526 flow [2022-07-22 21:59:34,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 21:59:34,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-07-22 21:59:34,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 856 transitions. [2022-07-22 21:59:34,705 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8603015075376884 [2022-07-22 21:59:34,706 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 856 transitions. [2022-07-22 21:59:34,706 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 856 transitions. [2022-07-22 21:59:34,706 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:59:34,706 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 856 transitions. [2022-07-22 21:59:34,708 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 171.2) internal successors, (856), 5 states have internal predecessors, (856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:59:34,710 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 199.0) internal successors, (1194), 6 states have internal predecessors, (1194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:59:34,711 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 199.0) internal successors, (1194), 6 states have internal predecessors, (1194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:59:34,711 INFO L186 Difference]: Start difference. First operand has 183 places, 178 transitions, 415 flow. Second operand 5 states and 856 transitions. [2022-07-22 21:59:34,711 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 189 transitions, 526 flow [2022-07-22 21:59:34,713 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 189 transitions, 526 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-07-22 21:59:34,716 INFO L242 Difference]: Finished difference. Result has 189 places, 180 transitions, 450 flow [2022-07-22 21:59:34,716 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=199, PETRI_DIFFERENCE_MINUEND_FLOW=415, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=450, PETRI_PLACES=189, PETRI_TRANSITIONS=180} [2022-07-22 21:59:34,717 INFO L279 CegarLoopForPetriNet]: 179 programPoint places, 10 predicate places. [2022-07-22 21:59:34,717 INFO L495 AbstractCegarLoop]: Abstraction has has 189 places, 180 transitions, 450 flow [2022-07-22 21:59:34,718 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 167.75) internal successors, (671), 4 states have internal predecessors, (671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:59:34,718 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:59:34,718 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] [2022-07-22 21:59:34,718 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-22 21:59:34,718 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-22 21:59:34,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:59:34,719 INFO L85 PathProgramCache]: Analyzing trace with hash -1246680816, now seen corresponding path program 3 times [2022-07-22 21:59:34,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:59:34,719 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998850188] [2022-07-22 21:59:34,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:59:34,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:59:34,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:59:34,826 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-22 21:59:34,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:59:34,827 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [998850188] [2022-07-22 21:59:34,827 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [998850188] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 21:59:34,827 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [737798381] [2022-07-22 21:59:34,828 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-22 21:59:34,828 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 21:59:34,828 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 21:59:34,829 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) [2022-07-22 21:59:34,837 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-22 21:59:34,929 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-07-22 21:59:34,930 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-22 21:59:34,935 INFO L263 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-22 21:59:34,938 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 21:59:35,081 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-22 21:59:35,081 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 21:59:35,218 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-22 21:59:35,219 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [737798381] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 21:59:35,219 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-22 21:59:35,219 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 12 [2022-07-22 21:59:35,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278021878] [2022-07-22 21:59:35,219 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-22 21:59:35,220 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-22 21:59:35,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:59:35,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-22 21:59:35,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2022-07-22 21:59:35,223 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 161 out of 199 [2022-07-22 21:59:35,225 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 180 transitions, 450 flow. Second operand has 12 states, 12 states have (on average 163.75) internal successors, (1965), 12 states have internal predecessors, (1965), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:59:35,225 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:59:35,225 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 161 of 199 [2022-07-22 21:59:35,225 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:59:35,933 INFO L129 PetriNetUnfolder]: 275/1629 cut-off events. [2022-07-22 21:59:35,933 INFO L130 PetriNetUnfolder]: For 676/681 co-relation queries the response was YES. [2022-07-22 21:59:35,939 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2714 conditions, 1629 events. 275/1629 cut-off events. For 676/681 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 10317 event pairs, 56 based on Foata normal form. 40/1577 useless extension candidates. Maximal degree in co-relation 2702. Up to 144 conditions per place. [2022-07-22 21:59:35,944 INFO L132 encePairwiseOnDemand]: 189/199 looper letters, 114 selfloop transitions, 46 changer transitions 3/313 dead transitions. [2022-07-22 21:59:35,945 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 313 transitions, 1269 flow [2022-07-22 21:59:35,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-07-22 21:59:35,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-07-22 21:59:35,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 3225 transitions. [2022-07-22 21:59:35,952 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.85294895530283 [2022-07-22 21:59:35,952 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 3225 transitions. [2022-07-22 21:59:35,952 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 3225 transitions. [2022-07-22 21:59:35,954 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:59:35,954 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 3225 transitions. [2022-07-22 21:59:35,960 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 169.73684210526315) internal successors, (3225), 19 states have internal predecessors, (3225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:59:35,967 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 199.0) internal successors, (3980), 20 states have internal predecessors, (3980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:59:35,969 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 199.0) internal successors, (3980), 20 states have internal predecessors, (3980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:59:35,969 INFO L186 Difference]: Start difference. First operand has 189 places, 180 transitions, 450 flow. Second operand 19 states and 3225 transitions. [2022-07-22 21:59:35,969 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 313 transitions, 1269 flow [2022-07-22 21:59:35,974 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 313 transitions, 1231 flow, removed 11 selfloop flow, removed 2 redundant places. [2022-07-22 21:59:35,978 INFO L242 Difference]: Finished difference. Result has 216 places, 225 transitions, 854 flow [2022-07-22 21:59:35,978 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=199, PETRI_DIFFERENCE_MINUEND_FLOW=441, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=854, PETRI_PLACES=216, PETRI_TRANSITIONS=225} [2022-07-22 21:59:35,979 INFO L279 CegarLoopForPetriNet]: 179 programPoint places, 37 predicate places. [2022-07-22 21:59:35,979 INFO L495 AbstractCegarLoop]: Abstraction has has 216 places, 225 transitions, 854 flow [2022-07-22 21:59:35,980 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 163.75) internal successors, (1965), 12 states have internal predecessors, (1965), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:59:35,981 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:59:35,981 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] [2022-07-22 21:59:36,011 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-22 21:59:36,206 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-07-22 21:59:36,206 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-22 21:59:36,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:59:36,207 INFO L85 PathProgramCache]: Analyzing trace with hash -818561113, now seen corresponding path program 1 times [2022-07-22 21:59:36,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:59:36,207 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1665633809] [2022-07-22 21:59:36,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:59:36,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:59:36,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:59:36,311 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-22 21:59:36,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:59:36,312 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1665633809] [2022-07-22 21:59:36,312 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1665633809] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:59:36,312 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:59:36,313 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 21:59:36,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215131973] [2022-07-22 21:59:36,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:59:36,314 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 21:59:36,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:59:36,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 21:59:36,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 21:59:36,315 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 171 out of 199 [2022-07-22 21:59:36,316 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 225 transitions, 854 flow. Second operand has 4 states, 4 states have (on average 173.75) internal successors, (695), 4 states have internal predecessors, (695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:59:36,316 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:59:36,317 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 171 of 199 [2022-07-22 21:59:36,317 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:59:36,461 INFO L129 PetriNetUnfolder]: 94/864 cut-off events. [2022-07-22 21:59:36,462 INFO L130 PetriNetUnfolder]: For 1119/1213 co-relation queries the response was YES. [2022-07-22 21:59:36,466 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1693 conditions, 864 events. 94/864 cut-off events. For 1119/1213 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 4408 event pairs, 11 based on Foata normal form. 22/826 useless extension candidates. Maximal degree in co-relation 1670. Up to 128 conditions per place. [2022-07-22 21:59:36,469 INFO L132 encePairwiseOnDemand]: 193/199 looper letters, 45 selfloop transitions, 10 changer transitions 1/234 dead transitions. [2022-07-22 21:59:36,470 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 234 transitions, 1018 flow [2022-07-22 21:59:36,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 21:59:36,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-07-22 21:59:36,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 881 transitions. [2022-07-22 21:59:36,472 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8854271356783919 [2022-07-22 21:59:36,472 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 881 transitions. [2022-07-22 21:59:36,472 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 881 transitions. [2022-07-22 21:59:36,473 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:59:36,473 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 881 transitions. [2022-07-22 21:59:36,475 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 176.2) internal successors, (881), 5 states have internal predecessors, (881), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:59:36,477 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 199.0) internal successors, (1194), 6 states have internal predecessors, (1194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:59:36,479 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 199.0) internal successors, (1194), 6 states have internal predecessors, (1194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:59:36,479 INFO L186 Difference]: Start difference. First operand has 216 places, 225 transitions, 854 flow. Second operand 5 states and 881 transitions. [2022-07-22 21:59:36,479 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 234 transitions, 1018 flow [2022-07-22 21:59:36,487 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 234 transitions, 990 flow, removed 8 selfloop flow, removed 2 redundant places. [2022-07-22 21:59:36,494 INFO L242 Difference]: Finished difference. Result has 219 places, 226 transitions, 875 flow [2022-07-22 21:59:36,495 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=199, PETRI_DIFFERENCE_MINUEND_FLOW=826, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=225, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=215, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=875, PETRI_PLACES=219, PETRI_TRANSITIONS=226} [2022-07-22 21:59:36,495 INFO L279 CegarLoopForPetriNet]: 179 programPoint places, 40 predicate places. [2022-07-22 21:59:36,496 INFO L495 AbstractCegarLoop]: Abstraction has has 219 places, 226 transitions, 875 flow [2022-07-22 21:59:36,496 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 173.75) internal successors, (695), 4 states have internal predecessors, (695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:59:36,496 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:59:36,497 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] [2022-07-22 21:59:36,497 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-22 21:59:36,497 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-22 21:59:36,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:59:36,498 INFO L85 PathProgramCache]: Analyzing trace with hash -895598935, now seen corresponding path program 2 times [2022-07-22 21:59:36,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:59:36,498 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1822709626] [2022-07-22 21:59:36,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:59:36,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:59:36,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:59:36,601 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-22 21:59:36,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:59:36,602 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1822709626] [2022-07-22 21:59:36,602 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1822709626] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:59:36,602 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:59:36,602 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 21:59:36,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939638729] [2022-07-22 21:59:36,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:59:36,603 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 21:59:36,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:59:36,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 21:59:36,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-22 21:59:36,605 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 171 out of 199 [2022-07-22 21:59:36,606 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 226 transitions, 875 flow. Second operand has 4 states, 4 states have (on average 173.75) internal successors, (695), 4 states have internal predecessors, (695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:59:36,606 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:59:36,606 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 171 of 199 [2022-07-22 21:59:36,606 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:59:36,781 INFO L129 PetriNetUnfolder]: 108/1057 cut-off events. [2022-07-22 21:59:36,782 INFO L130 PetriNetUnfolder]: For 1228/1287 co-relation queries the response was YES. [2022-07-22 21:59:36,787 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1991 conditions, 1057 events. 108/1057 cut-off events. For 1228/1287 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 5955 event pairs, 36 based on Foata normal form. 16/993 useless extension candidates. Maximal degree in co-relation 1966. Up to 156 conditions per place. [2022-07-22 21:59:36,791 INFO L132 encePairwiseOnDemand]: 194/199 looper letters, 49 selfloop transitions, 10 changer transitions 2/239 dead transitions. [2022-07-22 21:59:36,792 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 239 transitions, 1082 flow [2022-07-22 21:59:36,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 21:59:36,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-07-22 21:59:36,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 710 transitions. [2022-07-22 21:59:36,794 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8919597989949749 [2022-07-22 21:59:36,794 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 710 transitions. [2022-07-22 21:59:36,794 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 710 transitions. [2022-07-22 21:59:36,795 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:59:36,795 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 710 transitions. [2022-07-22 21:59:36,796 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 177.5) internal successors, (710), 4 states have internal predecessors, (710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:59:36,798 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 199.0) internal successors, (995), 5 states have internal predecessors, (995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:59:36,798 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 199.0) internal successors, (995), 5 states have internal predecessors, (995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:59:36,799 INFO L186 Difference]: Start difference. First operand has 219 places, 226 transitions, 875 flow. Second operand 4 states and 710 transitions. [2022-07-22 21:59:36,799 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 239 transitions, 1082 flow [2022-07-22 21:59:36,805 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 239 transitions, 1059 flow, removed 4 selfloop flow, removed 2 redundant places. [2022-07-22 21:59:36,809 INFO L242 Difference]: Finished difference. Result has 222 places, 229 transitions, 916 flow [2022-07-22 21:59:36,809 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=199, PETRI_DIFFERENCE_MINUEND_FLOW=856, PETRI_DIFFERENCE_MINUEND_PLACES=217, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=226, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=216, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=916, PETRI_PLACES=222, PETRI_TRANSITIONS=229} [2022-07-22 21:59:36,810 INFO L279 CegarLoopForPetriNet]: 179 programPoint places, 43 predicate places. [2022-07-22 21:59:36,810 INFO L495 AbstractCegarLoop]: Abstraction has has 222 places, 229 transitions, 916 flow [2022-07-22 21:59:36,811 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 173.75) internal successors, (695), 4 states have internal predecessors, (695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:59:36,811 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:59:36,811 INFO L200 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:59:36,812 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-22 21:59:36,812 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-22 21:59:36,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:59:36,812 INFO L85 PathProgramCache]: Analyzing trace with hash -1051090039, now seen corresponding path program 1 times [2022-07-22 21:59:36,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:59:36,813 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602754559] [2022-07-22 21:59:36,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:59:36,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:59:36,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:59:36,953 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-22 21:59:36,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:59:36,954 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1602754559] [2022-07-22 21:59:36,954 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1602754559] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 21:59:36,954 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1630986550] [2022-07-22 21:59:36,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:59:36,955 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 21:59:36,955 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 21:59:36,956 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) [2022-07-22 21:59:36,961 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-22 21:59:37,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:59:37,061 INFO L263 TraceCheckSpWp]: Trace formula consists of 338 conjuncts, 40 conjunts are in the unsatisfiable core [2022-07-22 21:59:37,066 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 21:59:38,093 INFO L356 Elim1Store]: treesize reduction 13, result has 18.8 percent of original size [2022-07-22 21:59:38,094 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 10 [2022-07-22 21:59:38,208 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:59:38,209 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 21:59:38,506 INFO L356 Elim1Store]: treesize reduction 9, result has 43.8 percent of original size [2022-07-22 21:59:38,507 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 11 [2022-07-22 21:59:39,100 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:59:39,101 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1630986550] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 21:59:39,101 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-22 21:59:39,101 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 23, 22] total 44 [2022-07-22 21:59:39,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990915402] [2022-07-22 21:59:39,101 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-22 21:59:39,102 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2022-07-22 21:59:39,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:59:39,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2022-07-22 21:59:39,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=204, Invalid=1688, Unknown=0, NotChecked=0, Total=1892 [2022-07-22 21:59:39,113 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 199 [2022-07-22 21:59:39,116 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 229 transitions, 916 flow. Second operand has 44 states, 44 states have (on average 91.18181818181819) internal successors, (4012), 44 states have internal predecessors, (4012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:59:39,116 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:59:39,116 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 199 [2022-07-22 21:59:39,116 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 22:01:05,995 INFO L129 PetriNetUnfolder]: 41067/83516 cut-off events. [2022-07-22 22:01:05,995 INFO L130 PetriNetUnfolder]: For 72691/73148 co-relation queries the response was YES. [2022-07-22 22:01:06,441 INFO L84 FinitePrefix]: Finished finitePrefix Result has 191715 conditions, 83516 events. 41067/83516 cut-off events. For 72691/73148 co-relation queries the response was YES. Maximal size of possible extension queue 1438. Compared 867057 event pairs, 2270 based on Foata normal form. 769/78206 useless extension candidates. Maximal degree in co-relation 191688. Up to 13942 conditions per place. [2022-07-22 22:01:06,749 INFO L132 encePairwiseOnDemand]: 141/199 looper letters, 3239 selfloop transitions, 1699 changer transitions 1714/6743 dead transitions. [2022-07-22 22:01:06,749 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1019 places, 6743 transitions, 35378 flow [2022-07-22 22:01:06,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 799 states. [2022-07-22 22:01:06,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 799 states. [2022-07-22 22:01:06,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 799 states to 799 states and 74986 transitions. [2022-07-22 22:01:06,857 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.4716070968107119 [2022-07-22 22:01:06,857 INFO L72 ComplementDD]: Start complementDD. Operand 799 states and 74986 transitions. [2022-07-22 22:01:06,857 INFO L73 IsDeterministic]: Start isDeterministic. Operand 799 states and 74986 transitions. [2022-07-22 22:01:06,890 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 22:01:06,890 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 799 states and 74986 transitions. [2022-07-22 22:01:07,030 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 800 states, 799 states have (on average 93.84981226533166) internal successors, (74986), 799 states have internal predecessors, (74986), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:01:07,238 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 800 states, 800 states have (on average 199.0) internal successors, (159200), 800 states have internal predecessors, (159200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:01:07,296 INFO L81 ComplementDD]: Finished complementDD. Result has 800 states, 800 states have (on average 199.0) internal successors, (159200), 800 states have internal predecessors, (159200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:01:07,296 INFO L186 Difference]: Start difference. First operand has 222 places, 229 transitions, 916 flow. Second operand 799 states and 74986 transitions. [2022-07-22 22:01:07,296 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1019 places, 6743 transitions, 35378 flow [2022-07-22 22:01:07,787 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1016 places, 6743 transitions, 35168 flow, removed 2 selfloop flow, removed 3 redundant places. [2022-07-22 22:01:07,846 INFO L242 Difference]: Finished difference. Result has 1497 places, 2472 transitions, 17140 flow [2022-07-22 22:01:07,847 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=199, PETRI_DIFFERENCE_MINUEND_FLOW=899, PETRI_DIFFERENCE_MINUEND_PLACES=218, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=229, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=799, PETRI_FLOW=17140, PETRI_PLACES=1497, PETRI_TRANSITIONS=2472} [2022-07-22 22:01:07,848 INFO L279 CegarLoopForPetriNet]: 179 programPoint places, 1318 predicate places. [2022-07-22 22:01:07,848 INFO L495 AbstractCegarLoop]: Abstraction has has 1497 places, 2472 transitions, 17140 flow [2022-07-22 22:01:07,849 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 91.18181818181819) internal successors, (4012), 44 states have internal predecessors, (4012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:01:07,849 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 22:01:07,850 INFO L200 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 22:01:07,881 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-22 22:01:08,072 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:01:08,073 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-22 22:01:08,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:01:08,074 INFO L85 PathProgramCache]: Analyzing trace with hash -1975439035, now seen corresponding path program 2 times [2022-07-22 22:01:08,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:01:08,074 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397423840] [2022-07-22 22:01:08,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:01:08,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:01:08,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:01:08,300 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 1 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-22 22:01:08,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:01:08,301 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1397423840] [2022-07-22 22:01:08,301 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1397423840] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 22:01:08,301 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [711020144] [2022-07-22 22:01:08,301 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-22 22:01:08,302 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:01:08,302 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:01:08,303 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) [2022-07-22 22:01:08,305 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-22 22:01:08,404 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-22 22:01:08,405 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-22 22:01:08,407 INFO L263 TraceCheckSpWp]: Trace formula consists of 338 conjuncts, 50 conjunts are in the unsatisfiable core [2022-07-22 22:01:08,412 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:01:08,862 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-07-22 22:01:09,081 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-22 22:01:09,126 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-22 22:01:09,997 INFO L356 Elim1Store]: treesize reduction 13, result has 18.8 percent of original size [2022-07-22 22:01:09,998 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 10 [2022-07-22 22:01:10,124 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-22 22:01:10,124 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 22:01:13,428 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-22 22:01:13,429 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 55 treesize of output 44 [2022-07-22 22:01:13,445 INFO L356 Elim1Store]: treesize reduction 9, result has 43.8 percent of original size [2022-07-22 22:01:13,446 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 94 treesize of output 85 [2022-07-22 22:01:13,463 INFO L356 Elim1Store]: treesize reduction 15, result has 6.3 percent of original size [2022-07-22 22:01:13,464 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 78 treesize of output 54 [2022-07-22 22:01:13,473 INFO L356 Elim1Store]: treesize reduction 15, result has 6.3 percent of original size [2022-07-22 22:01:13,474 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 20 [2022-07-22 22:01:13,677 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 7 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-22 22:01:13,678 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [711020144] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 22:01:13,678 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-22 22:01:13,678 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 29, 26] total 55 [2022-07-22 22:01:13,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371001084] [2022-07-22 22:01:13,679 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-22 22:01:13,679 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2022-07-22 22:01:13,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:01:13,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2022-07-22 22:01:13,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=297, Invalid=2604, Unknown=69, NotChecked=0, Total=2970 [2022-07-22 22:01:13,685 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 199 [2022-07-22 22:01:13,688 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1497 places, 2472 transitions, 17140 flow. Second operand has 55 states, 55 states have (on average 77.2909090909091) internal successors, (4251), 55 states have internal predecessors, (4251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:01:13,688 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 22:01:13,688 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 199 [2022-07-22 22:01:13,688 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand