./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-ext/33_double_lock_p1_vs.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6c24879c Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/pthread-ext/33_double_lock_p1_vs.i -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 3937112f59473340c79cc2d7ab59a9fe9e4faa83d54303e5490f5452d86b21aa --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-12 10:03:00,868 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 10:03:00,898 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 10:03:00,934 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 10:03:00,935 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 10:03:00,936 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 10:03:00,938 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 10:03:00,942 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 10:03:00,943 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 10:03:00,947 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 10:03:00,947 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 10:03:00,949 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 10:03:00,949 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 10:03:00,951 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 10:03:00,952 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 10:03:00,953 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 10:03:00,953 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 10:03:00,954 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 10:03:00,956 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 10:03:00,960 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 10:03:00,962 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 10:03:00,962 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 10:03:00,963 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 10:03:00,963 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 10:03:00,964 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 10:03:00,968 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 10:03:00,968 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 10:03:00,968 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 10:03:00,969 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 10:03:00,969 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 10:03:00,970 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 10:03:00,970 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 10:03:00,972 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 10:03:00,972 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 10:03:00,972 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 10:03:00,973 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 10:03:00,973 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 10:03:00,974 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 10:03:00,974 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 10:03:00,974 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 10:03:00,975 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 10:03:00,976 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 10:03:00,976 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-12 10:03:00,992 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 10:03:00,992 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 10:03:00,993 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 10:03:00,993 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 10:03:00,993 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 10:03:00,993 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 10:03:00,994 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 10:03:00,994 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 10:03:00,994 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 10:03:00,994 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 10:03:00,994 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-12 10:03:00,995 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-12 10:03:00,995 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-12 10:03:00,996 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 10:03:00,996 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-12 10:03:00,996 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 10:03:00,996 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-12 10:03:00,996 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-12 10:03:00,997 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-12 10:03:00,997 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 10:03:00,997 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-12 10:03:00,997 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 10:03:00,998 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 10:03:00,998 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 10:03:00,998 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 10:03:00,998 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 10:03:00,998 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 10:03:00,999 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-12 10:03:00,999 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-12 10:03:00,999 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-12 10:03:00,999 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-12 10:03:01,000 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-12 10:03:01,000 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-12 10:03:01,000 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3937112f59473340c79cc2d7ab59a9fe9e4faa83d54303e5490f5452d86b21aa [2022-07-12 10:03:01,201 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 10:03:01,219 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 10:03:01,220 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 10:03:01,221 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 10:03:01,225 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 10:03:01,226 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-ext/33_double_lock_p1_vs.i [2022-07-12 10:03:01,287 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/68b8a56fb/0abbeb738ca4416ebedaa031c22ef174/FLAG5b3b0548c [2022-07-12 10:03:01,691 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 10:03:01,692 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/33_double_lock_p1_vs.i [2022-07-12 10:03:01,701 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/68b8a56fb/0abbeb738ca4416ebedaa031c22ef174/FLAG5b3b0548c [2022-07-12 10:03:01,710 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/68b8a56fb/0abbeb738ca4416ebedaa031c22ef174 [2022-07-12 10:03:01,711 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 10:03:01,712 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 10:03:01,714 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 10:03:01,714 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 10:03:01,716 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 10:03:01,717 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 10:03:01" (1/1) ... [2022-07-12 10:03:01,718 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b8e1c62 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:03:01, skipping insertion in model container [2022-07-12 10:03:01,718 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 10:03:01" (1/1) ... [2022-07-12 10:03:01,722 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 10:03:01,750 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 10:03:01,974 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/pthread-ext/33_double_lock_p1_vs.i[30807,30820] [2022-07-12 10:03:01,982 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 10:03:01,987 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 10:03:02,018 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/pthread-ext/33_double_lock_p1_vs.i[30807,30820] [2022-07-12 10:03:02,020 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 10:03:02,041 INFO L208 MainTranslator]: Completed translation [2022-07-12 10:03:02,042 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:03:02 WrapperNode [2022-07-12 10:03:02,042 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-12 10:03:02,043 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-12 10:03:02,043 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-12 10:03:02,043 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-12 10:03:02,049 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:03:02" (1/1) ... [2022-07-12 10:03:02,075 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:03:02" (1/1) ... [2022-07-12 10:03:02,100 INFO L137 Inliner]: procedures = 175, calls = 36, calls flagged for inlining = 18, calls inlined = 24, statements flattened = 157 [2022-07-12 10:03:02,105 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-12 10:03:02,105 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-12 10:03:02,106 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-12 10:03:02,106 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-12 10:03:02,111 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:03:02" (1/1) ... [2022-07-12 10:03:02,111 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:03:02" (1/1) ... [2022-07-12 10:03:02,113 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:03:02" (1/1) ... [2022-07-12 10:03:02,114 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:03:02" (1/1) ... [2022-07-12 10:03:02,123 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:03:02" (1/1) ... [2022-07-12 10:03:02,126 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:03:02" (1/1) ... [2022-07-12 10:03:02,127 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:03:02" (1/1) ... [2022-07-12 10:03:02,129 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-12 10:03:02,130 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-12 10:03:02,130 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-12 10:03:02,130 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-12 10:03:02,131 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:03:02" (1/1) ... [2022-07-12 10:03:02,135 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 10:03:02,144 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:03:02,159 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-12 10:03:02,166 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-12 10:03:02,190 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-12 10:03:02,190 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2022-07-12 10:03:02,190 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2022-07-12 10:03:02,190 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2022-07-12 10:03:02,190 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2022-07-12 10:03:02,190 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-12 10:03:02,190 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-12 10:03:02,190 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-12 10:03:02,191 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-12 10:03:02,191 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-12 10:03:02,191 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-12 10:03:02,193 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-12 10:03:02,194 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-07-12 10:03:02,277 INFO L234 CfgBuilder]: Building ICFG [2022-07-12 10:03:02,278 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-12 10:03:02,545 INFO L275 CfgBuilder]: Performing block encoding [2022-07-12 10:03:02,629 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-12 10:03:02,629 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-07-12 10:03:02,631 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 10:03:02 BoogieIcfgContainer [2022-07-12 10:03:02,631 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-12 10:03:02,633 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-12 10:03:02,633 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-12 10:03:02,636 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-12 10:03:02,636 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.07 10:03:01" (1/3) ... [2022-07-12 10:03:02,637 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39028e96 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 10:03:02, skipping insertion in model container [2022-07-12 10:03:02,637 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:03:02" (2/3) ... [2022-07-12 10:03:02,637 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39028e96 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 10:03:02, skipping insertion in model container [2022-07-12 10:03:02,637 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 10:03:02" (3/3) ... [2022-07-12 10:03:02,638 INFO L111 eAbstractionObserver]: Analyzing ICFG 33_double_lock_p1_vs.i [2022-07-12 10:03:02,642 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-12 10:03:02,664 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-12 10:03:02,665 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-12 10:03:02,665 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-12 10:03:02,698 INFO L135 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-07-12 10:03:02,727 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 79 places, 79 transitions, 168 flow [2022-07-12 10:03:02,755 INFO L129 PetriNetUnfolder]: 7/89 cut-off events. [2022-07-12 10:03:02,756 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-07-12 10:03:02,759 INFO L84 FinitePrefix]: Finished finitePrefix Result has 97 conditions, 89 events. 7/89 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 156 event pairs, 0 based on Foata normal form. 0/79 useless extension candidates. Maximal degree in co-relation 68. Up to 4 conditions per place. [2022-07-12 10:03:02,759 INFO L82 GeneralOperation]: Start removeDead. Operand has 79 places, 79 transitions, 168 flow [2022-07-12 10:03:02,763 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 78 places, 78 transitions, 164 flow [2022-07-12 10:03:02,774 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 10:03:02,780 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@23d352ac, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@533ea92 [2022-07-12 10:03:02,780 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-07-12 10:03:02,791 INFO L129 PetriNetUnfolder]: 2/41 cut-off events. [2022-07-12 10:03:02,792 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-07-12 10:03:02,792 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:03:02,792 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] [2022-07-12 10:03:02,793 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-12 10:03:02,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:03:02,798 INFO L85 PathProgramCache]: Analyzing trace with hash -1285914916, now seen corresponding path program 1 times [2022-07-12 10:03:02,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:03:02,805 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194009537] [2022-07-12 10:03:02,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:03:02,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:03:02,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:03:02,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:03:02,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:03:02,973 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [194009537] [2022-07-12 10:03:02,974 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [194009537] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:03:02,974 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:03:02,974 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 10:03:02,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009732342] [2022-07-12 10:03:02,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:03:02,995 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 10:03:02,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:03:03,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 10:03:03,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 10:03:03,013 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 79 [2022-07-12 10:03:03,015 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 78 transitions, 164 flow. Second operand has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 3 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:03:03,027 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:03:03,027 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 79 [2022-07-12 10:03:03,028 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:03:03,132 INFO L129 PetriNetUnfolder]: 104/297 cut-off events. [2022-07-12 10:03:03,132 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2022-07-12 10:03:03,134 INFO L84 FinitePrefix]: Finished finitePrefix Result has 525 conditions, 297 events. 104/297 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1204 event pairs, 21 based on Foata normal form. 142/417 useless extension candidates. Maximal degree in co-relation 493. Up to 107 conditions per place. [2022-07-12 10:03:03,136 INFO L132 encePairwiseOnDemand]: 66/79 looper letters, 23 selfloop transitions, 6 changer transitions 0/75 dead transitions. [2022-07-12 10:03:03,137 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 75 transitions, 216 flow [2022-07-12 10:03:03,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 10:03:03,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-12 10:03:03,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 202 transitions. [2022-07-12 10:03:03,146 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8523206751054853 [2022-07-12 10:03:03,147 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 202 transitions. [2022-07-12 10:03:03,147 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 202 transitions. [2022-07-12 10:03:03,148 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:03:03,149 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 202 transitions. [2022-07-12 10:03:03,151 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 67.33333333333333) internal successors, (202), 3 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:03:03,154 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 79.0) internal successors, (316), 4 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:03:03,154 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 79.0) internal successors, (316), 4 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:03:03,155 INFO L186 Difference]: Start difference. First operand has 78 places, 78 transitions, 164 flow. Second operand 3 states and 202 transitions. [2022-07-12 10:03:03,156 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 75 transitions, 216 flow [2022-07-12 10:03:03,158 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 75 transitions, 215 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-07-12 10:03:03,160 INFO L242 Difference]: Finished difference. Result has 71 places, 68 transitions, 177 flow [2022-07-12 10:03:03,161 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=137, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=177, PETRI_PLACES=71, PETRI_TRANSITIONS=68} [2022-07-12 10:03:03,164 INFO L279 CegarLoopForPetriNet]: 78 programPoint places, -7 predicate places. [2022-07-12 10:03:03,164 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 68 transitions, 177 flow [2022-07-12 10:03:03,164 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 3 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:03:03,164 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:03:03,165 INFO L200 CegarLoopForPetriNet]: trace histogram [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] [2022-07-12 10:03:03,165 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-12 10:03:03,165 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-12 10:03:03,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:03:03,165 INFO L85 PathProgramCache]: Analyzing trace with hash 389079278, now seen corresponding path program 1 times [2022-07-12 10:03:03,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:03:03,166 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831966368] [2022-07-12 10:03:03,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:03:03,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:03:03,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-12 10:03:03,205 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-12 10:03:03,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-12 10:03:03,245 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-12 10:03:03,246 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-12 10:03:03,247 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 4 remaining) [2022-07-12 10:03:03,248 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 4 remaining) [2022-07-12 10:03:03,249 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2022-07-12 10:03:03,249 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 4 remaining) [2022-07-12 10:03:03,250 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-12 10:03:03,251 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1] [2022-07-12 10:03:03,252 WARN L231 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-07-12 10:03:03,253 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-07-12 10:03:03,292 INFO L135 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-07-12 10:03:03,295 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 117 places, 118 transitions, 260 flow [2022-07-12 10:03:03,306 INFO L129 PetriNetUnfolder]: 9/123 cut-off events. [2022-07-12 10:03:03,306 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-07-12 10:03:03,307 INFO L84 FinitePrefix]: Finished finitePrefix Result has 137 conditions, 123 events. 9/123 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 271 event pairs, 0 based on Foata normal form. 0/110 useless extension candidates. Maximal degree in co-relation 132. Up to 6 conditions per place. [2022-07-12 10:03:03,307 INFO L82 GeneralOperation]: Start removeDead. Operand has 117 places, 118 transitions, 260 flow [2022-07-12 10:03:03,308 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 100 places, 99 transitions, 213 flow [2022-07-12 10:03:03,309 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 10:03:03,309 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@23d352ac, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@533ea92 [2022-07-12 10:03:03,309 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-07-12 10:03:03,312 INFO L129 PetriNetUnfolder]: 2/40 cut-off events. [2022-07-12 10:03:03,312 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-07-12 10:03:03,312 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:03:03,312 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] [2022-07-12 10:03:03,312 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-07-12 10:03:03,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:03:03,312 INFO L85 PathProgramCache]: Analyzing trace with hash 1583575936, now seen corresponding path program 1 times [2022-07-12 10:03:03,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:03:03,313 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [82583362] [2022-07-12 10:03:03,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:03:03,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:03:03,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:03:03,359 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:03:03,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:03:03,359 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [82583362] [2022-07-12 10:03:03,359 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [82583362] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:03:03,359 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:03:03,359 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 10:03:03,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482360838] [2022-07-12 10:03:03,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:03:03,360 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 10:03:03,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:03:03,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 10:03:03,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 10:03:03,361 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 118 [2022-07-12 10:03:03,361 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 99 transitions, 213 flow. Second operand has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:03:03,361 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:03:03,361 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 118 [2022-07-12 10:03:03,361 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:03:03,839 INFO L129 PetriNetUnfolder]: 2222/3878 cut-off events. [2022-07-12 10:03:03,839 INFO L130 PetriNetUnfolder]: For 323/323 co-relation queries the response was YES. [2022-07-12 10:03:03,851 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7519 conditions, 3878 events. 2222/3878 cut-off events. For 323/323 co-relation queries the response was YES. Maximal size of possible extension queue 328. Compared 26800 event pairs, 549 based on Foata normal form. 1519/5219 useless extension candidates. Maximal degree in co-relation 7486. Up to 2135 conditions per place. [2022-07-12 10:03:03,874 INFO L132 encePairwiseOnDemand]: 101/118 looper letters, 41 selfloop transitions, 10 changer transitions 0/109 dead transitions. [2022-07-12 10:03:03,875 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 109 transitions, 340 flow [2022-07-12 10:03:03,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 10:03:03,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-12 10:03:03,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 275 transitions. [2022-07-12 10:03:03,880 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7768361581920904 [2022-07-12 10:03:03,880 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 275 transitions. [2022-07-12 10:03:03,880 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 275 transitions. [2022-07-12 10:03:03,881 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:03:03,881 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 275 transitions. [2022-07-12 10:03:03,882 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 91.66666666666667) internal successors, (275), 3 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:03:03,884 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 118.0) internal successors, (472), 4 states have internal predecessors, (472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:03:03,884 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 118.0) internal successors, (472), 4 states have internal predecessors, (472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:03:03,884 INFO L186 Difference]: Start difference. First operand has 100 places, 99 transitions, 213 flow. Second operand 3 states and 275 transitions. [2022-07-12 10:03:03,885 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 109 transitions, 340 flow [2022-07-12 10:03:03,886 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 109 transitions, 337 flow, removed 1 selfloop flow, removed 1 redundant places. [2022-07-12 10:03:03,888 INFO L242 Difference]: Finished difference. Result has 93 places, 95 transitions, 264 flow [2022-07-12 10:03:03,888 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=118, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=264, PETRI_PLACES=93, PETRI_TRANSITIONS=95} [2022-07-12 10:03:03,889 INFO L279 CegarLoopForPetriNet]: 100 programPoint places, -7 predicate places. [2022-07-12 10:03:03,889 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 95 transitions, 264 flow [2022-07-12 10:03:03,889 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:03:03,890 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:03:03,890 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] [2022-07-12 10:03:03,890 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-12 10:03:03,890 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-07-12 10:03:03,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:03:03,891 INFO L85 PathProgramCache]: Analyzing trace with hash -1543540875, now seen corresponding path program 1 times [2022-07-12 10:03:03,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:03:03,891 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321247743] [2022-07-12 10:03:03,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:03:03,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:03:03,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:03:03,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:03:03,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:03:03,990 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [321247743] [2022-07-12 10:03:03,991 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [321247743] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:03:03,991 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:03:03,991 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 10:03:03,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644904865] [2022-07-12 10:03:03,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:03:03,993 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 10:03:03,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:03:03,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 10:03:03,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-12 10:03:03,996 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 118 [2022-07-12 10:03:03,996 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 95 transitions, 264 flow. Second operand has 4 states, 4 states have (on average 72.75) internal successors, (291), 4 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:03:03,996 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:03:03,997 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 118 [2022-07-12 10:03:03,997 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:03:04,509 INFO L129 PetriNetUnfolder]: 2471/4719 cut-off events. [2022-07-12 10:03:04,509 INFO L130 PetriNetUnfolder]: For 1671/1671 co-relation queries the response was YES. [2022-07-12 10:03:04,523 INFO L84 FinitePrefix]: Finished finitePrefix Result has 10726 conditions, 4719 events. 2471/4719 cut-off events. For 1671/1671 co-relation queries the response was YES. Maximal size of possible extension queue 350. Compared 36328 event pairs, 468 based on Foata normal form. 96/4793 useless extension candidates. Maximal degree in co-relation 10690. Up to 1812 conditions per place. [2022-07-12 10:03:04,549 INFO L132 encePairwiseOnDemand]: 107/118 looper letters, 60 selfloop transitions, 14 changer transitions 0/132 dead transitions. [2022-07-12 10:03:04,550 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 132 transitions, 514 flow [2022-07-12 10:03:04,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-12 10:03:04,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-07-12 10:03:04,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 360 transitions. [2022-07-12 10:03:04,552 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7627118644067796 [2022-07-12 10:03:04,552 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 360 transitions. [2022-07-12 10:03:04,552 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 360 transitions. [2022-07-12 10:03:04,552 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:03:04,552 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 360 transitions. [2022-07-12 10:03:04,553 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 90.0) internal successors, (360), 4 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:03:04,555 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 118.0) internal successors, (590), 5 states have internal predecessors, (590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:03:04,555 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 118.0) internal successors, (590), 5 states have internal predecessors, (590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:03:04,555 INFO L186 Difference]: Start difference. First operand has 93 places, 95 transitions, 264 flow. Second operand 4 states and 360 transitions. [2022-07-12 10:03:04,556 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 132 transitions, 514 flow [2022-07-12 10:03:04,562 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 132 transitions, 494 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-07-12 10:03:04,565 INFO L242 Difference]: Finished difference. Result has 95 places, 99 transitions, 306 flow [2022-07-12 10:03:04,565 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=118, PETRI_DIFFERENCE_MINUEND_FLOW=244, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=306, PETRI_PLACES=95, PETRI_TRANSITIONS=99} [2022-07-12 10:03:04,566 INFO L279 CegarLoopForPetriNet]: 100 programPoint places, -5 predicate places. [2022-07-12 10:03:04,567 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 99 transitions, 306 flow [2022-07-12 10:03:04,567 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 72.75) internal successors, (291), 4 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:03:04,567 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:03:04,567 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] [2022-07-12 10:03:04,567 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-12 10:03:04,568 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-07-12 10:03:04,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:03:04,568 INFO L85 PathProgramCache]: Analyzing trace with hash -730331812, now seen corresponding path program 1 times [2022-07-12 10:03:04,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:03:04,569 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2147457507] [2022-07-12 10:03:04,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:03:04,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:03:04,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:03:04,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:03:04,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:03:04,646 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2147457507] [2022-07-12 10:03:04,647 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2147457507] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:03:04,647 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:03:04,647 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 10:03:04,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893333316] [2022-07-12 10:03:04,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:03:04,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 10:03:04,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:03:04,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 10:03:04,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-12 10:03:04,652 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 118 [2022-07-12 10:03:04,652 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 99 transitions, 306 flow. Second operand has 4 states, 4 states have (on average 72.75) internal successors, (291), 4 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:03:04,652 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:03:04,652 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 118 [2022-07-12 10:03:04,652 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:03:05,153 INFO L129 PetriNetUnfolder]: 2375/5273 cut-off events. [2022-07-12 10:03:05,153 INFO L130 PetriNetUnfolder]: For 2238/2238 co-relation queries the response was YES. [2022-07-12 10:03:05,201 INFO L84 FinitePrefix]: Finished finitePrefix Result has 11645 conditions, 5273 events. 2375/5273 cut-off events. For 2238/2238 co-relation queries the response was YES. Maximal size of possible extension queue 327. Compared 45616 event pairs, 797 based on Foata normal form. 110/5361 useless extension candidates. Maximal degree in co-relation 11608. Up to 1748 conditions per place. [2022-07-12 10:03:05,226 INFO L132 encePairwiseOnDemand]: 106/118 looper letters, 61 selfloop transitions, 24 changer transitions 0/143 dead transitions. [2022-07-12 10:03:05,226 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 143 transitions, 620 flow [2022-07-12 10:03:05,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-12 10:03:05,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-07-12 10:03:05,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 360 transitions. [2022-07-12 10:03:05,228 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7627118644067796 [2022-07-12 10:03:05,228 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 360 transitions. [2022-07-12 10:03:05,228 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 360 transitions. [2022-07-12 10:03:05,229 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:03:05,229 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 360 transitions. [2022-07-12 10:03:05,230 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 90.0) internal successors, (360), 4 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:03:05,231 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 118.0) internal successors, (590), 5 states have internal predecessors, (590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:03:05,232 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 118.0) internal successors, (590), 5 states have internal predecessors, (590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:03:05,232 INFO L186 Difference]: Start difference. First operand has 95 places, 99 transitions, 306 flow. Second operand 4 states and 360 transitions. [2022-07-12 10:03:05,232 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 143 transitions, 620 flow [2022-07-12 10:03:05,237 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 143 transitions, 609 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-07-12 10:03:05,239 INFO L242 Difference]: Finished difference. Result has 100 places, 114 transitions, 491 flow [2022-07-12 10:03:05,239 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=118, PETRI_DIFFERENCE_MINUEND_FLOW=296, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=491, PETRI_PLACES=100, PETRI_TRANSITIONS=114} [2022-07-12 10:03:05,240 INFO L279 CegarLoopForPetriNet]: 100 programPoint places, 0 predicate places. [2022-07-12 10:03:05,240 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 114 transitions, 491 flow [2022-07-12 10:03:05,240 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 72.75) internal successors, (291), 4 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:03:05,241 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:03:05,241 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] [2022-07-12 10:03:05,241 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-12 10:03:05,241 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-07-12 10:03:05,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:03:05,242 INFO L85 PathProgramCache]: Analyzing trace with hash -605140667, now seen corresponding path program 1 times [2022-07-12 10:03:05,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:03:05,242 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1570949747] [2022-07-12 10:03:05,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:03:05,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:03:05,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:03:05,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:03:05,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:03:05,292 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1570949747] [2022-07-12 10:03:05,292 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1570949747] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:03:05,292 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:03:05,293 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 10:03:05,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227628722] [2022-07-12 10:03:05,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:03:05,293 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 10:03:05,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:03:05,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 10:03:05,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-12 10:03:05,295 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 118 [2022-07-12 10:03:05,295 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 114 transitions, 491 flow. Second operand has 5 states, 5 states have (on average 72.6) internal successors, (363), 5 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:03:05,296 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:03:05,296 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 118 [2022-07-12 10:03:05,296 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:03:05,908 INFO L129 PetriNetUnfolder]: 2529/5740 cut-off events. [2022-07-12 10:03:05,908 INFO L130 PetriNetUnfolder]: For 4762/4762 co-relation queries the response was YES. [2022-07-12 10:03:05,926 INFO L84 FinitePrefix]: Finished finitePrefix Result has 14434 conditions, 5740 events. 2529/5740 cut-off events. For 4762/4762 co-relation queries the response was YES. Maximal size of possible extension queue 371. Compared 51951 event pairs, 464 based on Foata normal form. 48/5766 useless extension candidates. Maximal degree in co-relation 14393. Up to 1739 conditions per place. [2022-07-12 10:03:05,952 INFO L132 encePairwiseOnDemand]: 106/118 looper letters, 84 selfloop transitions, 29 changer transitions 0/171 dead transitions. [2022-07-12 10:03:05,952 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 171 transitions, 921 flow [2022-07-12 10:03:05,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 10:03:05,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-07-12 10:03:05,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 456 transitions. [2022-07-12 10:03:05,954 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7728813559322034 [2022-07-12 10:03:05,954 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 456 transitions. [2022-07-12 10:03:05,954 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 456 transitions. [2022-07-12 10:03:05,954 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:03:05,954 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 456 transitions. [2022-07-12 10:03:05,955 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 91.2) internal successors, (456), 5 states have internal predecessors, (456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:03:05,957 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 118.0) internal successors, (708), 6 states have internal predecessors, (708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:03:05,958 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 118.0) internal successors, (708), 6 states have internal predecessors, (708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:03:05,958 INFO L186 Difference]: Start difference. First operand has 100 places, 114 transitions, 491 flow. Second operand 5 states and 456 transitions. [2022-07-12 10:03:05,958 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 171 transitions, 921 flow [2022-07-12 10:03:05,975 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 171 transitions, 909 flow, removed 6 selfloop flow, removed 0 redundant places. [2022-07-12 10:03:05,979 INFO L242 Difference]: Finished difference. Result has 106 places, 126 transitions, 677 flow [2022-07-12 10:03:05,979 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=118, PETRI_DIFFERENCE_MINUEND_FLOW=479, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=677, PETRI_PLACES=106, PETRI_TRANSITIONS=126} [2022-07-12 10:03:05,981 INFO L279 CegarLoopForPetriNet]: 100 programPoint places, 6 predicate places. [2022-07-12 10:03:05,981 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 126 transitions, 677 flow [2022-07-12 10:03:05,982 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 72.6) internal successors, (363), 5 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:03:05,982 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:03:05,982 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] [2022-07-12 10:03:05,982 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-12 10:03:05,983 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-07-12 10:03:05,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:03:05,984 INFO L85 PathProgramCache]: Analyzing trace with hash -1562317620, now seen corresponding path program 1 times [2022-07-12 10:03:05,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:03:05,984 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503165400] [2022-07-12 10:03:05,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:03:05,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:03:06,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:03:06,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:03:06,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:03:06,045 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503165400] [2022-07-12 10:03:06,045 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [503165400] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:03:06,045 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:03:06,045 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 10:03:06,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141198980] [2022-07-12 10:03:06,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:03:06,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 10:03:06,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:03:06,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 10:03:06,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 10:03:06,047 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 118 [2022-07-12 10:03:06,047 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 126 transitions, 677 flow. Second operand has 3 states, 3 states have (on average 77.33333333333333) internal successors, (232), 3 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:03:06,047 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:03:06,047 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 118 [2022-07-12 10:03:06,048 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:03:07,600 INFO L129 PetriNetUnfolder]: 7722/16634 cut-off events. [2022-07-12 10:03:07,600 INFO L130 PetriNetUnfolder]: For 25730/25972 co-relation queries the response was YES. [2022-07-12 10:03:07,664 INFO L84 FinitePrefix]: Finished finitePrefix Result has 44430 conditions, 16634 events. 7722/16634 cut-off events. For 25730/25972 co-relation queries the response was YES. Maximal size of possible extension queue 1377. Compared 173596 event pairs, 2431 based on Foata normal form. 462/16897 useless extension candidates. Maximal degree in co-relation 44380. Up to 8223 conditions per place. [2022-07-12 10:03:07,746 INFO L132 encePairwiseOnDemand]: 108/118 looper letters, 112 selfloop transitions, 10 changer transitions 0/182 dead transitions. [2022-07-12 10:03:07,747 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 182 transitions, 1389 flow [2022-07-12 10:03:07,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 10:03:07,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-12 10:03:07,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 272 transitions. [2022-07-12 10:03:07,750 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.768361581920904 [2022-07-12 10:03:07,750 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 272 transitions. [2022-07-12 10:03:07,750 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 272 transitions. [2022-07-12 10:03:07,750 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:03:07,750 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 272 transitions. [2022-07-12 10:03:07,751 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 90.66666666666667) internal successors, (272), 3 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:03:07,752 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 118.0) internal successors, (472), 4 states have internal predecessors, (472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:03:07,753 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 118.0) internal successors, (472), 4 states have internal predecessors, (472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:03:07,753 INFO L186 Difference]: Start difference. First operand has 106 places, 126 transitions, 677 flow. Second operand 3 states and 272 transitions. [2022-07-12 10:03:07,754 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 182 transitions, 1389 flow [2022-07-12 10:03:07,817 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 182 transitions, 1265 flow, removed 42 selfloop flow, removed 2 redundant places. [2022-07-12 10:03:07,819 INFO L242 Difference]: Finished difference. Result has 107 places, 133 transitions, 667 flow [2022-07-12 10:03:07,819 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=118, PETRI_DIFFERENCE_MINUEND_FLOW=609, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=667, PETRI_PLACES=107, PETRI_TRANSITIONS=133} [2022-07-12 10:03:07,820 INFO L279 CegarLoopForPetriNet]: 100 programPoint places, 7 predicate places. [2022-07-12 10:03:07,820 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 133 transitions, 667 flow [2022-07-12 10:03:07,821 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 77.33333333333333) internal successors, (232), 3 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:03:07,821 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:03:07,821 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] [2022-07-12 10:03:07,821 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-12 10:03:07,821 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-07-12 10:03:07,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:03:07,822 INFO L85 PathProgramCache]: Analyzing trace with hash 1313554895, now seen corresponding path program 1 times [2022-07-12 10:03:07,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:03:07,822 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196324008] [2022-07-12 10:03:07,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:03:07,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:03:07,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:03:07,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:03:07,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:03:07,932 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [196324008] [2022-07-12 10:03:07,932 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [196324008] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:03:07,932 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:03:07,933 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 10:03:07,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492986838] [2022-07-12 10:03:07,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:03:07,934 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 10:03:07,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:03:07,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 10:03:07,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-07-12 10:03:07,935 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 118 [2022-07-12 10:03:07,935 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 133 transitions, 667 flow. Second operand has 6 states, 6 states have (on average 74.33333333333333) internal successors, (446), 6 states have internal predecessors, (446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:03:07,936 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:03:07,936 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 118 [2022-07-12 10:03:07,936 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:03:10,024 INFO L129 PetriNetUnfolder]: 10613/22507 cut-off events. [2022-07-12 10:03:10,024 INFO L130 PetriNetUnfolder]: For 33522/33942 co-relation queries the response was YES. [2022-07-12 10:03:10,103 INFO L84 FinitePrefix]: Finished finitePrefix Result has 73521 conditions, 22507 events. 10613/22507 cut-off events. For 33522/33942 co-relation queries the response was YES. Maximal size of possible extension queue 1735. Compared 237203 event pairs, 2266 based on Foata normal form. 529/22748 useless extension candidates. Maximal degree in co-relation 73470. Up to 11039 conditions per place. [2022-07-12 10:03:10,204 INFO L132 encePairwiseOnDemand]: 109/118 looper letters, 124 selfloop transitions, 13 changer transitions 0/196 dead transitions. [2022-07-12 10:03:10,204 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 196 transitions, 1411 flow [2022-07-12 10:03:10,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 10:03:10,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-07-12 10:03:10,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 414 transitions. [2022-07-12 10:03:10,207 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7016949152542373 [2022-07-12 10:03:10,207 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 414 transitions. [2022-07-12 10:03:10,207 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 414 transitions. [2022-07-12 10:03:10,207 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:03:10,207 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 414 transitions. [2022-07-12 10:03:10,208 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 82.8) internal successors, (414), 5 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:03:10,209 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 118.0) internal successors, (708), 6 states have internal predecessors, (708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:03:10,210 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 118.0) internal successors, (708), 6 states have internal predecessors, (708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:03:10,210 INFO L186 Difference]: Start difference. First operand has 107 places, 133 transitions, 667 flow. Second operand 5 states and 414 transitions. [2022-07-12 10:03:10,210 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 196 transitions, 1411 flow [2022-07-12 10:03:10,331 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 196 transitions, 1391 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-07-12 10:03:10,333 INFO L242 Difference]: Finished difference. Result has 111 places, 141 transitions, 742 flow [2022-07-12 10:03:10,333 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=118, PETRI_DIFFERENCE_MINUEND_FLOW=657, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=742, PETRI_PLACES=111, PETRI_TRANSITIONS=141} [2022-07-12 10:03:10,334 INFO L279 CegarLoopForPetriNet]: 100 programPoint places, 11 predicate places. [2022-07-12 10:03:10,334 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 141 transitions, 742 flow [2022-07-12 10:03:10,334 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 74.33333333333333) internal successors, (446), 6 states have internal predecessors, (446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:03:10,335 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:03:10,335 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] [2022-07-12 10:03:10,335 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-12 10:03:10,335 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-07-12 10:03:10,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:03:10,335 INFO L85 PathProgramCache]: Analyzing trace with hash -674975574, now seen corresponding path program 2 times [2022-07-12 10:03:10,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:03:10,336 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [423800189] [2022-07-12 10:03:10,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:03:10,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:03:10,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:03:10,400 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:03:10,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:03:10,402 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [423800189] [2022-07-12 10:03:10,402 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [423800189] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:03:10,403 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:03:10,403 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 10:03:10,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273397740] [2022-07-12 10:03:10,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:03:10,403 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 10:03:10,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:03:10,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 10:03:10,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-07-12 10:03:10,406 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 118 [2022-07-12 10:03:10,407 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 141 transitions, 742 flow. Second operand has 7 states, 7 states have (on average 66.85714285714286) internal successors, (468), 7 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:03:10,407 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:03:10,407 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 118 [2022-07-12 10:03:10,407 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:03:12,562 INFO L129 PetriNetUnfolder]: 10261/23485 cut-off events. [2022-07-12 10:03:12,562 INFO L130 PetriNetUnfolder]: For 43177/43793 co-relation queries the response was YES. [2022-07-12 10:03:12,639 INFO L84 FinitePrefix]: Finished finitePrefix Result has 81208 conditions, 23485 events. 10261/23485 cut-off events. For 43177/43793 co-relation queries the response was YES. Maximal size of possible extension queue 1539. Compared 259383 event pairs, 1858 based on Foata normal form. 615/23855 useless extension candidates. Maximal degree in co-relation 81148. Up to 9111 conditions per place. [2022-07-12 10:03:12,757 INFO L132 encePairwiseOnDemand]: 106/118 looper letters, 124 selfloop transitions, 24 changer transitions 0/201 dead transitions. [2022-07-12 10:03:12,758 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 201 transitions, 1509 flow [2022-07-12 10:03:12,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-12 10:03:12,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-07-12 10:03:12,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 444 transitions. [2022-07-12 10:03:12,760 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6271186440677966 [2022-07-12 10:03:12,760 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 444 transitions. [2022-07-12 10:03:12,760 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 444 transitions. [2022-07-12 10:03:12,760 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:03:12,760 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 444 transitions. [2022-07-12 10:03:12,761 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 74.0) internal successors, (444), 6 states have internal predecessors, (444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:03:12,762 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 118.0) internal successors, (826), 7 states have internal predecessors, (826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:03:12,763 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 118.0) internal successors, (826), 7 states have internal predecessors, (826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:03:12,763 INFO L186 Difference]: Start difference. First operand has 111 places, 141 transitions, 742 flow. Second operand 6 states and 444 transitions. [2022-07-12 10:03:12,763 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 201 transitions, 1509 flow [2022-07-12 10:03:12,884 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 201 transitions, 1506 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-07-12 10:03:12,886 INFO L242 Difference]: Finished difference. Result has 115 places, 150 transitions, 877 flow [2022-07-12 10:03:12,886 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=118, PETRI_DIFFERENCE_MINUEND_FLOW=739, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=877, PETRI_PLACES=115, PETRI_TRANSITIONS=150} [2022-07-12 10:03:12,887 INFO L279 CegarLoopForPetriNet]: 100 programPoint places, 15 predicate places. [2022-07-12 10:03:12,887 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 150 transitions, 877 flow [2022-07-12 10:03:12,887 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 66.85714285714286) internal successors, (468), 7 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:03:12,887 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:03:12,887 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] [2022-07-12 10:03:12,888 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-12 10:03:12,888 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-07-12 10:03:12,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:03:12,888 INFO L85 PathProgramCache]: Analyzing trace with hash 1155385899, now seen corresponding path program 2 times [2022-07-12 10:03:12,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:03:12,889 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713150202] [2022-07-12 10:03:12,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:03:12,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:03:12,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:03:13,049 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:03:13,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:03:13,049 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713150202] [2022-07-12 10:03:13,050 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1713150202] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:03:13,050 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:03:13,050 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-12 10:03:13,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490210375] [2022-07-12 10:03:13,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:03:13,051 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 10:03:13,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:03:13,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 10:03:13,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2022-07-12 10:03:13,052 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 118 [2022-07-12 10:03:13,053 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 150 transitions, 877 flow. Second operand has 10 states, 10 states have (on average 65.1) internal successors, (651), 10 states have internal predecessors, (651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:03:13,053 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:03:13,053 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 118 [2022-07-12 10:03:13,053 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:03:14,302 INFO L129 PetriNetUnfolder]: 5383/13196 cut-off events. [2022-07-12 10:03:14,302 INFO L130 PetriNetUnfolder]: For 31691/32148 co-relation queries the response was YES. [2022-07-12 10:03:14,347 INFO L84 FinitePrefix]: Finished finitePrefix Result has 50748 conditions, 13196 events. 5383/13196 cut-off events. For 31691/32148 co-relation queries the response was YES. Maximal size of possible extension queue 872. Compared 137114 event pairs, 1027 based on Foata normal form. 347/13384 useless extension candidates. Maximal degree in co-relation 50684. Up to 5267 conditions per place. [2022-07-12 10:03:14,407 INFO L132 encePairwiseOnDemand]: 107/118 looper letters, 100 selfloop transitions, 26 changer transitions 0/178 dead transitions. [2022-07-12 10:03:14,407 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 178 transitions, 1330 flow [2022-07-12 10:03:14,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-12 10:03:14,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-07-12 10:03:14,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 558 transitions. [2022-07-12 10:03:14,409 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.5911016949152542 [2022-07-12 10:03:14,409 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 558 transitions. [2022-07-12 10:03:14,409 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 558 transitions. [2022-07-12 10:03:14,409 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:03:14,410 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 558 transitions. [2022-07-12 10:03:14,411 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 69.75) internal successors, (558), 8 states have internal predecessors, (558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:03:14,412 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 118.0) internal successors, (1062), 9 states have internal predecessors, (1062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:03:14,412 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 118.0) internal successors, (1062), 9 states have internal predecessors, (1062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:03:14,412 INFO L186 Difference]: Start difference. First operand has 115 places, 150 transitions, 877 flow. Second operand 8 states and 558 transitions. [2022-07-12 10:03:14,412 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 178 transitions, 1330 flow [2022-07-12 10:03:14,468 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 178 transitions, 1325 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-07-12 10:03:14,470 INFO L242 Difference]: Finished difference. Result has 119 places, 144 transitions, 860 flow [2022-07-12 10:03:14,471 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=118, PETRI_DIFFERENCE_MINUEND_FLOW=808, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=860, PETRI_PLACES=119, PETRI_TRANSITIONS=144} [2022-07-12 10:03:14,471 INFO L279 CegarLoopForPetriNet]: 100 programPoint places, 19 predicate places. [2022-07-12 10:03:14,471 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 144 transitions, 860 flow [2022-07-12 10:03:14,472 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 65.1) internal successors, (651), 10 states have internal predecessors, (651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:03:14,472 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:03:14,472 INFO L200 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 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] [2022-07-12 10:03:14,472 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-12 10:03:14,472 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-07-12 10:03:14,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:03:14,473 INFO L85 PathProgramCache]: Analyzing trace with hash -777007714, now seen corresponding path program 1 times [2022-07-12 10:03:14,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:03:14,473 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925344345] [2022-07-12 10:03:14,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:03:14,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:03:14,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-12 10:03:14,481 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-12 10:03:14,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-12 10:03:14,493 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-12 10:03:14,493 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-12 10:03:14,493 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2022-07-12 10:03:14,493 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2022-07-12 10:03:14,493 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 5 remaining) [2022-07-12 10:03:14,493 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 5 remaining) [2022-07-12 10:03:14,494 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 5 remaining) [2022-07-12 10:03:14,494 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-12 10:03:14,494 INFO L356 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1] [2022-07-12 10:03:14,494 WARN L231 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-07-12 10:03:14,495 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-07-12 10:03:14,529 INFO L135 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-07-12 10:03:14,535 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 155 places, 157 transitions, 356 flow [2022-07-12 10:03:14,542 INFO L129 PetriNetUnfolder]: 11/157 cut-off events. [2022-07-12 10:03:14,542 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2022-07-12 10:03:14,542 INFO L84 FinitePrefix]: Finished finitePrefix Result has 178 conditions, 157 events. 11/157 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 383 event pairs, 0 based on Foata normal form. 0/141 useless extension candidates. Maximal degree in co-relation 171. Up to 8 conditions per place. [2022-07-12 10:03:14,542 INFO L82 GeneralOperation]: Start removeDead. Operand has 155 places, 157 transitions, 356 flow [2022-07-12 10:03:14,544 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 122 places, 120 transitions, 264 flow [2022-07-12 10:03:14,545 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 10:03:14,548 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@23d352ac, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@533ea92 [2022-07-12 10:03:14,548 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2022-07-12 10:03:14,550 INFO L129 PetriNetUnfolder]: 4/46 cut-off events. [2022-07-12 10:03:14,550 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-07-12 10:03:14,550 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:03:14,550 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] [2022-07-12 10:03:14,550 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-07-12 10:03:14,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:03:14,550 INFO L85 PathProgramCache]: Analyzing trace with hash -1099456548, now seen corresponding path program 1 times [2022-07-12 10:03:14,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:03:14,551 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2076907470] [2022-07-12 10:03:14,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:03:14,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:03:14,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:03:14,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:03:14,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:03:14,589 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2076907470] [2022-07-12 10:03:14,589 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2076907470] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:03:14,589 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:03:14,589 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 10:03:14,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075062433] [2022-07-12 10:03:14,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:03:14,590 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 10:03:14,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:03:14,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 10:03:14,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 10:03:14,591 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 157 [2022-07-12 10:03:14,591 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 120 transitions, 264 flow. Second operand has 3 states, 3 states have (on average 89.33333333333333) internal successors, (268), 3 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:03:14,591 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:03:14,592 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 157 [2022-07-12 10:03:14,592 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:03:18,168 INFO L129 PetriNetUnfolder]: 31382/46537 cut-off events. [2022-07-12 10:03:18,168 INFO L130 PetriNetUnfolder]: For 6751/6751 co-relation queries the response was YES. [2022-07-12 10:03:18,316 INFO L84 FinitePrefix]: Finished finitePrefix Result has 92714 conditions, 46537 events. 31382/46537 cut-off events. For 6751/6751 co-relation queries the response was YES. Maximal size of possible extension queue 3390. Compared 367978 event pairs, 9243 based on Foata normal form. 14398/59343 useless extension candidates. Maximal degree in co-relation 92680. Up to 28901 conditions per place. [2022-07-12 10:03:18,617 INFO L132 encePairwiseOnDemand]: 136/157 looper letters, 55 selfloop transitions, 14 changer transitions 0/139 dead transitions. [2022-07-12 10:03:18,617 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 139 transitions, 452 flow [2022-07-12 10:03:18,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 10:03:18,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-12 10:03:18,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 344 transitions. [2022-07-12 10:03:18,618 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7303609341825902 [2022-07-12 10:03:18,618 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 344 transitions. [2022-07-12 10:03:18,618 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 344 transitions. [2022-07-12 10:03:18,619 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:03:18,619 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 344 transitions. [2022-07-12 10:03:18,620 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 114.66666666666667) internal successors, (344), 3 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:03:18,621 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 157.0) internal successors, (628), 4 states have internal predecessors, (628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:03:18,621 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 157.0) internal successors, (628), 4 states have internal predecessors, (628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:03:18,621 INFO L186 Difference]: Start difference. First operand has 122 places, 120 transitions, 264 flow. Second operand 3 states and 344 transitions. [2022-07-12 10:03:18,621 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 139 transitions, 452 flow [2022-07-12 10:03:18,623 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 139 transitions, 443 flow, removed 4 selfloop flow, removed 1 redundant places. [2022-07-12 10:03:18,625 INFO L242 Difference]: Finished difference. Result has 115 places, 120 transitions, 343 flow [2022-07-12 10:03:18,625 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=231, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=343, PETRI_PLACES=115, PETRI_TRANSITIONS=120} [2022-07-12 10:03:18,625 INFO L279 CegarLoopForPetriNet]: 122 programPoint places, -7 predicate places. [2022-07-12 10:03:18,626 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 120 transitions, 343 flow [2022-07-12 10:03:18,626 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 89.33333333333333) internal successors, (268), 3 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:03:18,626 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:03:18,626 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] [2022-07-12 10:03:18,626 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-12 10:03:18,626 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-07-12 10:03:18,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:03:18,627 INFO L85 PathProgramCache]: Analyzing trace with hash -2112374529, now seen corresponding path program 1 times [2022-07-12 10:03:18,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:03:18,627 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2066256360] [2022-07-12 10:03:18,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:03:18,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:03:18,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:03:18,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:03:18,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:03:18,671 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2066256360] [2022-07-12 10:03:18,671 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2066256360] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:03:18,672 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:03:18,672 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 10:03:18,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864240969] [2022-07-12 10:03:18,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:03:18,672 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 10:03:18,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:03:18,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 10:03:18,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-12 10:03:18,673 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 157 [2022-07-12 10:03:18,674 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 120 transitions, 343 flow. Second operand has 4 states, 4 states have (on average 89.75) internal successors, (359), 4 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:03:18,674 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:03:18,674 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 157 [2022-07-12 10:03:18,674 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:03:24,753 INFO L129 PetriNetUnfolder]: 45925/79427 cut-off events. [2022-07-12 10:03:24,753 INFO L130 PetriNetUnfolder]: For 28673/28673 co-relation queries the response was YES. [2022-07-12 10:03:25,210 INFO L84 FinitePrefix]: Finished finitePrefix Result has 178826 conditions, 79427 events. 45925/79427 cut-off events. For 28673/28673 co-relation queries the response was YES. Maximal size of possible extension queue 5492. Compared 819496 event pairs, 14512 based on Foata normal form. 2048/81443 useless extension candidates. Maximal degree in co-relation 178789. Up to 25484 conditions per place. [2022-07-12 10:03:25,583 INFO L132 encePairwiseOnDemand]: 141/157 looper letters, 76 selfloop transitions, 38 changer transitions 0/184 dead transitions. [2022-07-12 10:03:25,583 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 184 transitions, 773 flow [2022-07-12 10:03:25,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-12 10:03:25,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-07-12 10:03:25,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 457 transitions. [2022-07-12 10:03:25,585 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7277070063694268 [2022-07-12 10:03:25,585 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 457 transitions. [2022-07-12 10:03:25,585 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 457 transitions. [2022-07-12 10:03:25,585 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:03:25,585 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 457 transitions. [2022-07-12 10:03:25,586 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 114.25) internal successors, (457), 4 states have internal predecessors, (457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:03:25,587 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 157.0) internal successors, (785), 5 states have internal predecessors, (785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:03:25,587 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 157.0) internal successors, (785), 5 states have internal predecessors, (785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:03:25,587 INFO L186 Difference]: Start difference. First operand has 115 places, 120 transitions, 343 flow. Second operand 4 states and 457 transitions. [2022-07-12 10:03:25,587 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 184 transitions, 773 flow [2022-07-12 10:03:25,618 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 184 transitions, 743 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-07-12 10:03:25,620 INFO L242 Difference]: Finished difference. Result has 119 places, 145 transitions, 601 flow [2022-07-12 10:03:25,620 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=315, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=601, PETRI_PLACES=119, PETRI_TRANSITIONS=145} [2022-07-12 10:03:25,621 INFO L279 CegarLoopForPetriNet]: 122 programPoint places, -3 predicate places. [2022-07-12 10:03:25,621 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 145 transitions, 601 flow [2022-07-12 10:03:25,621 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 89.75) internal successors, (359), 4 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:03:25,621 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:03:25,621 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] [2022-07-12 10:03:25,622 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-12 10:03:25,622 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-07-12 10:03:25,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:03:25,622 INFO L85 PathProgramCache]: Analyzing trace with hash 1556245758, now seen corresponding path program 1 times [2022-07-12 10:03:25,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:03:25,622 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2102703416] [2022-07-12 10:03:25,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:03:25,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:03:25,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:03:25,774 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:03:25,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:03:25,775 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2102703416] [2022-07-12 10:03:25,775 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2102703416] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:03:25,775 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:03:25,775 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 10:03:25,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768011700] [2022-07-12 10:03:25,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:03:25,776 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 10:03:25,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:03:25,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 10:03:25,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-12 10:03:25,777 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 157 [2022-07-12 10:03:25,777 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 145 transitions, 601 flow. Second operand has 4 states, 4 states have (on average 89.75) internal successors, (359), 4 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:03:25,777 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:03:25,777 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 157 [2022-07-12 10:03:25,777 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand