./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-wmm/mix040_power.oepc_pso.oepc_rmo.oepc.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-wmm/mix040_power.oepc_pso.oepc_rmo.oepc.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 a72b3b3683b5d2b2d35965fc1a3189152678e29fe154c9fbeb2d06d1447980e3 --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-12 10:07:02,085 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 10:07:02,086 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 10:07:02,114 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 10:07:02,115 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 10:07:02,116 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 10:07:02,120 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 10:07:02,122 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 10:07:02,123 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 10:07:02,128 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 10:07:02,129 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 10:07:02,130 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 10:07:02,131 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 10:07:02,132 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 10:07:02,134 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 10:07:02,135 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 10:07:02,136 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 10:07:02,137 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 10:07:02,140 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 10:07:02,144 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 10:07:02,146 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 10:07:02,147 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 10:07:02,148 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 10:07:02,148 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 10:07:02,149 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 10:07:02,153 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 10:07:02,153 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 10:07:02,153 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 10:07:02,154 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 10:07:02,154 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 10:07:02,155 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 10:07:02,155 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 10:07:02,156 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 10:07:02,157 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 10:07:02,157 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 10:07:02,158 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 10:07:02,158 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 10:07:02,158 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 10:07:02,159 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 10:07:02,159 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 10:07:02,159 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 10:07:02,161 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 10:07:02,162 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-12 10:07:02,187 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 10:07:02,187 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 10:07:02,188 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 10:07:02,188 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 10:07:02,188 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 10:07:02,188 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 10:07:02,189 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 10:07:02,189 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 10:07:02,189 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 10:07:02,190 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 10:07:02,190 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-12 10:07:02,190 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-12 10:07:02,190 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-12 10:07:02,190 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 10:07:02,191 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-12 10:07:02,191 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 10:07:02,191 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-12 10:07:02,191 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-12 10:07:02,191 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-12 10:07:02,192 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 10:07:02,192 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-12 10:07:02,192 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 10:07:02,192 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 10:07:02,193 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 10:07:02,193 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 10:07:02,193 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 10:07:02,193 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 10:07:02,193 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-12 10:07:02,193 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-12 10:07:02,194 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-12 10:07:02,194 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-12 10:07:02,194 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-12 10:07:02,194 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-12 10:07:02,194 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a72b3b3683b5d2b2d35965fc1a3189152678e29fe154c9fbeb2d06d1447980e3 [2022-07-12 10:07:02,400 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 10:07:02,439 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 10:07:02,440 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 10:07:02,441 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 10:07:02,441 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 10:07:02,442 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/mix040_power.oepc_pso.oepc_rmo.oepc.i [2022-07-12 10:07:02,496 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d80928b89/b76532d7d51f4f988f7f24a8d718e5a6/FLAGadf24a801 [2022-07-12 10:07:02,957 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 10:07:02,958 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/mix040_power.oepc_pso.oepc_rmo.oepc.i [2022-07-12 10:07:02,972 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d80928b89/b76532d7d51f4f988f7f24a8d718e5a6/FLAGadf24a801 [2022-07-12 10:07:02,989 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d80928b89/b76532d7d51f4f988f7f24a8d718e5a6 [2022-07-12 10:07:02,992 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 10:07:02,993 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 10:07:02,994 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 10:07:02,994 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 10:07:02,996 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 10:07:02,997 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 10:07:02" (1/1) ... [2022-07-12 10:07:02,998 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@78ae3623 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:07:02, skipping insertion in model container [2022-07-12 10:07:02,998 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 10:07:02" (1/1) ... [2022-07-12 10:07:03,004 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 10:07:03,044 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 10:07:03,206 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-wmm/mix040_power.oepc_pso.oepc_rmo.oepc.i[969,982] [2022-07-12 10:07:03,359 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 10:07:03,372 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 10:07:03,380 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-wmm/mix040_power.oepc_pso.oepc_rmo.oepc.i[969,982] [2022-07-12 10:07:03,423 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 10:07:03,447 INFO L208 MainTranslator]: Completed translation [2022-07-12 10:07:03,448 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:07:03 WrapperNode [2022-07-12 10:07:03,448 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-12 10:07:03,449 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-12 10:07:03,449 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-12 10:07:03,449 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-12 10:07:03,454 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:07:03" (1/1) ... [2022-07-12 10:07:03,483 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:07:03" (1/1) ... [2022-07-12 10:07:03,516 INFO L137 Inliner]: procedures = 177, calls = 71, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 193 [2022-07-12 10:07:03,516 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-12 10:07:03,517 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-12 10:07:03,518 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-12 10:07:03,518 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-12 10:07:03,523 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:07:03" (1/1) ... [2022-07-12 10:07:03,524 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:07:03" (1/1) ... [2022-07-12 10:07:03,536 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:07:03" (1/1) ... [2022-07-12 10:07:03,536 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:07:03" (1/1) ... [2022-07-12 10:07:03,548 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:07:03" (1/1) ... [2022-07-12 10:07:03,555 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:07:03" (1/1) ... [2022-07-12 10:07:03,561 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:07:03" (1/1) ... [2022-07-12 10:07:03,570 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-12 10:07:03,579 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-12 10:07:03,579 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-12 10:07:03,579 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-12 10:07:03,580 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:07:03" (1/1) ... [2022-07-12 10:07:03,587 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 10:07:03,603 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:07:03,614 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 10:07:03,635 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 10:07:03,639 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-12 10:07:03,639 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-07-12 10:07:03,640 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-12 10:07:03,640 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-12 10:07:03,640 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-12 10:07:03,640 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2022-07-12 10:07:03,640 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2022-07-12 10:07:03,640 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2022-07-12 10:07:03,640 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2022-07-12 10:07:03,641 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2022-07-12 10:07:03,641 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2022-07-12 10:07:03,641 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2022-07-12 10:07:03,641 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2022-07-12 10:07:03,641 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-12 10:07:03,641 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-07-12 10:07:03,641 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-12 10:07:03,641 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-12 10:07:03,643 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 10:07:03,773 INFO L234 CfgBuilder]: Building ICFG [2022-07-12 10:07:03,774 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-12 10:07:04,242 INFO L275 CfgBuilder]: Performing block encoding [2022-07-12 10:07:04,473 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-12 10:07:04,473 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-12 10:07:04,475 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 10:07:04 BoogieIcfgContainer [2022-07-12 10:07:04,475 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-12 10:07:04,477 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-12 10:07:04,477 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-12 10:07:04,479 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-12 10:07:04,479 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.07 10:07:02" (1/3) ... [2022-07-12 10:07:04,480 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c6abf3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 10:07:04, skipping insertion in model container [2022-07-12 10:07:04,480 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:07:03" (2/3) ... [2022-07-12 10:07:04,481 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c6abf3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 10:07:04, skipping insertion in model container [2022-07-12 10:07:04,481 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 10:07:04" (3/3) ... [2022-07-12 10:07:04,482 INFO L111 eAbstractionObserver]: Analyzing ICFG mix040_power.oepc_pso.oepc_rmo.oepc.i [2022-07-12 10:07:04,500 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-12 10:07:04,507 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-12 10:07:04,507 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-12 10:07:04,507 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-12 10:07:04,556 INFO L135 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-07-12 10:07:04,590 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 150 places, 139 transitions, 298 flow [2022-07-12 10:07:04,619 INFO L129 PetriNetUnfolder]: 2/135 cut-off events. [2022-07-12 10:07:04,619 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-07-12 10:07:04,621 INFO L84 FinitePrefix]: Finished finitePrefix Result has 148 conditions, 135 events. 2/135 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 72 event pairs, 0 based on Foata normal form. 0/131 useless extension candidates. Maximal degree in co-relation 93. Up to 2 conditions per place. [2022-07-12 10:07:04,621 INFO L82 GeneralOperation]: Start removeDead. Operand has 150 places, 139 transitions, 298 flow [2022-07-12 10:07:04,624 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 146 places, 135 transitions, 282 flow [2022-07-12 10:07:04,631 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 10:07:04,635 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@69409b89, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@19298361 [2022-07-12 10:07:04,635 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2022-07-12 10:07:04,640 INFO L129 PetriNetUnfolder]: 0/51 cut-off events. [2022-07-12 10:07:04,641 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-07-12 10:07:04,641 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:07:04,641 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:07:04,642 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P0Err0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-12 10:07:04,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:07:04,645 INFO L85 PathProgramCache]: Analyzing trace with hash -1951185825, now seen corresponding path program 1 times [2022-07-12 10:07:04,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:07:04,651 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329522843] [2022-07-12 10:07:04,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:07:04,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:07:04,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:07:04,860 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 10:07:04,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:07:04,861 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329522843] [2022-07-12 10:07:04,861 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1329522843] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:07:04,861 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:07:04,861 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-12 10:07:04,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657118544] [2022-07-12 10:07:04,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:07:04,869 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 10:07:04,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:07:04,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 10:07:04,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 10:07:04,894 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 139 [2022-07-12 10:07:04,899 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 135 transitions, 282 flow. Second operand has 3 states, 3 states have (on average 124.0) internal successors, (372), 3 states have internal predecessors, (372), 0 states have call successors, (0), 0 states 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 10:07:04,900 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:07:04,900 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 139 [2022-07-12 10:07:04,901 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:07:05,130 INFO L129 PetriNetUnfolder]: 162/623 cut-off events. [2022-07-12 10:07:05,130 INFO L130 PetriNetUnfolder]: For 22/22 co-relation queries the response was YES. [2022-07-12 10:07:05,133 INFO L84 FinitePrefix]: Finished finitePrefix Result has 929 conditions, 623 events. 162/623 cut-off events. For 22/22 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 3456 event pairs, 132 based on Foata normal form. 46/627 useless extension candidates. Maximal degree in co-relation 871. Up to 191 conditions per place. [2022-07-12 10:07:05,138 INFO L132 encePairwiseOnDemand]: 134/139 looper letters, 18 selfloop transitions, 2 changer transitions 0/139 dead transitions. [2022-07-12 10:07:05,138 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 139 transitions, 339 flow [2022-07-12 10:07:05,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 10:07:05,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-12 10:07:05,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 394 transitions. [2022-07-12 10:07:05,150 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9448441247002398 [2022-07-12 10:07:05,150 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 394 transitions. [2022-07-12 10:07:05,151 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 394 transitions. [2022-07-12 10:07:05,152 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:07:05,154 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 394 transitions. [2022-07-12 10:07:05,157 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 131.33333333333334) internal successors, (394), 3 states have internal predecessors, (394), 0 states have call successors, (0), 0 states 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 10:07:05,161 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 139.0) internal successors, (556), 4 states have internal predecessors, (556), 0 states have call successors, (0), 0 states 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 10:07:05,162 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 139.0) internal successors, (556), 4 states have internal predecessors, (556), 0 states have call successors, (0), 0 states 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 10:07:05,164 INFO L186 Difference]: Start difference. First operand has 146 places, 135 transitions, 282 flow. Second operand 3 states and 394 transitions. [2022-07-12 10:07:05,164 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 139 transitions, 339 flow [2022-07-12 10:07:05,167 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 139 transitions, 332 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-07-12 10:07:05,169 INFO L242 Difference]: Finished difference. Result has 142 places, 131 transitions, 274 flow [2022-07-12 10:07:05,171 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=270, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=274, PETRI_PLACES=142, PETRI_TRANSITIONS=131} [2022-07-12 10:07:05,173 INFO L279 CegarLoopForPetriNet]: 146 programPoint places, -4 predicate places. [2022-07-12 10:07:05,174 INFO L495 AbstractCegarLoop]: Abstraction has has 142 places, 131 transitions, 274 flow [2022-07-12 10:07:05,174 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 124.0) internal successors, (372), 3 states have internal predecessors, (372), 0 states have call successors, (0), 0 states 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 10:07:05,174 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:07:05,175 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:07:05,175 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-12 10:07:05,175 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-12 10:07:05,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:07:05,176 INFO L85 PathProgramCache]: Analyzing trace with hash 771760905, now seen corresponding path program 1 times [2022-07-12 10:07:05,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:07:05,176 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2036600691] [2022-07-12 10:07:05,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:07:05,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:07:05,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:07:05,374 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:07:05,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:07:05,375 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2036600691] [2022-07-12 10:07:05,376 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2036600691] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:07:05,377 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:07:05,378 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 10:07:05,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358813720] [2022-07-12 10:07:05,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:07:05,379 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 10:07:05,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:07:05,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 10:07:05,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-12 10:07:05,382 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 139 [2022-07-12 10:07:05,386 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 131 transitions, 274 flow. Second operand has 7 states, 7 states have (on average 108.28571428571429) internal successors, (758), 7 states have internal predecessors, (758), 0 states have call successors, (0), 0 states 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 10:07:05,386 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:07:05,386 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 139 [2022-07-12 10:07:05,387 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:07:09,215 INFO L129 PetriNetUnfolder]: 14819/33024 cut-off events. [2022-07-12 10:07:09,216 INFO L130 PetriNetUnfolder]: For 1153/1153 co-relation queries the response was YES. [2022-07-12 10:07:09,372 INFO L84 FinitePrefix]: Finished finitePrefix Result has 54690 conditions, 33024 events. 14819/33024 cut-off events. For 1153/1153 co-relation queries the response was YES. Maximal size of possible extension queue 1336. Compared 352881 event pairs, 2507 based on Foata normal form. 0/32157 useless extension candidates. Maximal degree in co-relation 54629. Up to 7247 conditions per place. [2022-07-12 10:07:09,465 INFO L132 encePairwiseOnDemand]: 125/139 looper letters, 48 selfloop transitions, 12 changer transitions 128/277 dead transitions. [2022-07-12 10:07:09,465 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 277 transitions, 948 flow [2022-07-12 10:07:09,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-12 10:07:09,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-07-12 10:07:09,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1556 transitions. [2022-07-12 10:07:09,469 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8610957387935805 [2022-07-12 10:07:09,469 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1556 transitions. [2022-07-12 10:07:09,470 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1556 transitions. [2022-07-12 10:07:09,470 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:07:09,470 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1556 transitions. [2022-07-12 10:07:09,473 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 119.6923076923077) internal successors, (1556), 13 states have internal predecessors, (1556), 0 states have call successors, (0), 0 states 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 10:07:09,477 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 139.0) internal successors, (1946), 14 states have internal predecessors, (1946), 0 states have call successors, (0), 0 states 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 10:07:09,478 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 139.0) internal successors, (1946), 14 states have internal predecessors, (1946), 0 states have call successors, (0), 0 states 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 10:07:09,478 INFO L186 Difference]: Start difference. First operand has 142 places, 131 transitions, 274 flow. Second operand 13 states and 1556 transitions. [2022-07-12 10:07:09,478 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 277 transitions, 948 flow [2022-07-12 10:07:09,480 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 277 transitions, 922 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-07-12 10:07:09,483 INFO L242 Difference]: Finished difference. Result has 164 places, 126 transitions, 374 flow [2022-07-12 10:07:09,483 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=270, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=374, PETRI_PLACES=164, PETRI_TRANSITIONS=126} [2022-07-12 10:07:09,484 INFO L279 CegarLoopForPetriNet]: 146 programPoint places, 18 predicate places. [2022-07-12 10:07:09,484 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 126 transitions, 374 flow [2022-07-12 10:07:09,485 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 108.28571428571429) internal successors, (758), 7 states have internal predecessors, (758), 0 states have call successors, (0), 0 states 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 10:07:09,485 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:07:09,485 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:07:09,485 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-12 10:07:09,485 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-12 10:07:09,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:07:09,486 INFO L85 PathProgramCache]: Analyzing trace with hash -562955512, now seen corresponding path program 1 times [2022-07-12 10:07:09,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:07:09,486 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059660158] [2022-07-12 10:07:09,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:07:09,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:07:09,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:07:09,605 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 10:07:09,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:07:09,605 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059660158] [2022-07-12 10:07:09,606 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2059660158] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:07:09,606 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:07:09,606 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 10:07:09,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773164702] [2022-07-12 10:07:09,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:07:09,607 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 10:07:09,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:07:09,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 10:07:09,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-12 10:07:09,608 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 139 [2022-07-12 10:07:09,609 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 126 transitions, 374 flow. Second operand has 7 states, 7 states have (on average 108.42857142857143) internal successors, (759), 7 states have internal predecessors, (759), 0 states have call successors, (0), 0 states 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 10:07:09,609 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:07:09,610 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 139 [2022-07-12 10:07:09,610 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:07:12,011 INFO L129 PetriNetUnfolder]: 10158/17470 cut-off events. [2022-07-12 10:07:12,012 INFO L130 PetriNetUnfolder]: For 30573/30645 co-relation queries the response was YES. [2022-07-12 10:07:12,123 INFO L84 FinitePrefix]: Finished finitePrefix Result has 52538 conditions, 17470 events. 10158/17470 cut-off events. For 30573/30645 co-relation queries the response was YES. Maximal size of possible extension queue 847. Compared 138716 event pairs, 1150 based on Foata normal form. 368/17635 useless extension candidates. Maximal degree in co-relation 52461. Up to 4924 conditions per place. [2022-07-12 10:07:12,192 INFO L132 encePairwiseOnDemand]: 127/139 looper letters, 54 selfloop transitions, 10 changer transitions 118/271 dead transitions. [2022-07-12 10:07:12,193 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 271 transitions, 1478 flow [2022-07-12 10:07:12,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-12 10:07:12,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-07-12 10:07:12,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1538 transitions. [2022-07-12 10:07:12,197 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8511344770337577 [2022-07-12 10:07:12,197 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1538 transitions. [2022-07-12 10:07:12,197 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1538 transitions. [2022-07-12 10:07:12,198 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:07:12,198 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1538 transitions. [2022-07-12 10:07:12,201 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 118.3076923076923) internal successors, (1538), 13 states have internal predecessors, (1538), 0 states have call successors, (0), 0 states 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 10:07:12,204 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 139.0) internal successors, (1946), 14 states have internal predecessors, (1946), 0 states have call successors, (0), 0 states 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 10:07:12,205 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 139.0) internal successors, (1946), 14 states have internal predecessors, (1946), 0 states have call successors, (0), 0 states 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 10:07:12,205 INFO L186 Difference]: Start difference. First operand has 164 places, 126 transitions, 374 flow. Second operand 13 states and 1538 transitions. [2022-07-12 10:07:12,205 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 271 transitions, 1478 flow [2022-07-12 10:07:12,370 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 271 transitions, 1454 flow, removed 12 selfloop flow, removed 3 redundant places. [2022-07-12 10:07:12,375 INFO L242 Difference]: Finished difference. Result has 162 places, 132 transitions, 500 flow [2022-07-12 10:07:12,375 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=368, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=500, PETRI_PLACES=162, PETRI_TRANSITIONS=132} [2022-07-12 10:07:12,377 INFO L279 CegarLoopForPetriNet]: 146 programPoint places, 16 predicate places. [2022-07-12 10:07:12,377 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 132 transitions, 500 flow [2022-07-12 10:07:12,378 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 108.42857142857143) internal successors, (759), 7 states have internal predecessors, (759), 0 states have call successors, (0), 0 states 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 10:07:12,378 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:07:12,379 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:07:12,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-12 10:07:12,379 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-12 10:07:12,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:07:12,380 INFO L85 PathProgramCache]: Analyzing trace with hash 1974763944, now seen corresponding path program 1 times [2022-07-12 10:07:12,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:07:12,380 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [604838676] [2022-07-12 10:07:12,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:07:12,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:07:12,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:07:12,640 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 10:07:12,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:07:12,640 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [604838676] [2022-07-12 10:07:12,640 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [604838676] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:07:12,641 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:07:12,641 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 10:07:12,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055633828] [2022-07-12 10:07:12,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:07:12,641 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 10:07:12,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:07:12,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 10:07:12,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-12 10:07:12,643 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 139 [2022-07-12 10:07:12,644 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 132 transitions, 500 flow. Second operand has 7 states, 7 states have (on average 108.57142857142857) internal successors, (760), 7 states have internal predecessors, (760), 0 states have call successors, (0), 0 states 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 10:07:12,644 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:07:12,644 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 139 [2022-07-12 10:07:12,644 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:07:14,776 INFO L129 PetriNetUnfolder]: 8555/14629 cut-off events. [2022-07-12 10:07:14,776 INFO L130 PetriNetUnfolder]: For 49830/49930 co-relation queries the response was YES. [2022-07-12 10:07:14,856 INFO L84 FinitePrefix]: Finished finitePrefix Result has 51297 conditions, 14629 events. 8555/14629 cut-off events. For 49830/49930 co-relation queries the response was YES. Maximal size of possible extension queue 727. Compared 111910 event pairs, 984 based on Foata normal form. 282/14716 useless extension candidates. Maximal degree in co-relation 51209. Up to 4791 conditions per place. [2022-07-12 10:07:14,919 INFO L132 encePairwiseOnDemand]: 124/139 looper letters, 54 selfloop transitions, 24 changer transitions 106/273 dead transitions. [2022-07-12 10:07:14,920 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 273 transitions, 1800 flow [2022-07-12 10:07:14,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-12 10:07:14,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-07-12 10:07:14,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1536 transitions. [2022-07-12 10:07:14,923 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8500276701715551 [2022-07-12 10:07:14,924 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1536 transitions. [2022-07-12 10:07:14,927 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1536 transitions. [2022-07-12 10:07:14,928 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:07:14,928 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1536 transitions. [2022-07-12 10:07:14,930 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 118.15384615384616) internal successors, (1536), 13 states have internal predecessors, (1536), 0 states have call successors, (0), 0 states 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 10:07:14,933 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 139.0) internal successors, (1946), 14 states have internal predecessors, (1946), 0 states have call successors, (0), 0 states 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 10:07:14,933 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 139.0) internal successors, (1946), 14 states have internal predecessors, (1946), 0 states have call successors, (0), 0 states 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 10:07:14,934 INFO L186 Difference]: Start difference. First operand has 162 places, 132 transitions, 500 flow. Second operand 13 states and 1536 transitions. [2022-07-12 10:07:14,934 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 273 transitions, 1800 flow [2022-07-12 10:07:15,099 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 273 transitions, 1723 flow, removed 36 selfloop flow, removed 4 redundant places. [2022-07-12 10:07:15,104 INFO L242 Difference]: Finished difference. Result has 173 places, 146 transitions, 786 flow [2022-07-12 10:07:15,105 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=479, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=786, PETRI_PLACES=173, PETRI_TRANSITIONS=146} [2022-07-12 10:07:15,106 INFO L279 CegarLoopForPetriNet]: 146 programPoint places, 27 predicate places. [2022-07-12 10:07:15,106 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 146 transitions, 786 flow [2022-07-12 10:07:15,107 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 108.57142857142857) internal successors, (760), 7 states have internal predecessors, (760), 0 states have call successors, (0), 0 states 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 10:07:15,107 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:07:15,107 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:07:15,107 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-12 10:07:15,107 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-12 10:07:15,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:07:15,108 INFO L85 PathProgramCache]: Analyzing trace with hash -211338833, now seen corresponding path program 1 times [2022-07-12 10:07:15,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:07:15,108 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040113752] [2022-07-12 10:07:15,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:07:15,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:07:15,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:07:15,225 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 10:07:15,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:07:15,225 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2040113752] [2022-07-12 10:07:15,225 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2040113752] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:07:15,225 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:07:15,226 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 10:07:15,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299916339] [2022-07-12 10:07:15,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:07:15,226 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 10:07:15,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:07:15,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 10:07:15,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-12 10:07:15,228 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 139 [2022-07-12 10:07:15,228 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 146 transitions, 786 flow. Second operand has 7 states, 7 states have (on average 108.71428571428571) internal successors, (761), 7 states have internal predecessors, (761), 0 states have call successors, (0), 0 states 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 10:07:15,229 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:07:15,229 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 139 [2022-07-12 10:07:15,229 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:07:18,002 INFO L129 PetriNetUnfolder]: 9343/17212 cut-off events. [2022-07-12 10:07:18,002 INFO L130 PetriNetUnfolder]: For 75260/76175 co-relation queries the response was YES. [2022-07-12 10:07:18,115 INFO L84 FinitePrefix]: Finished finitePrefix Result has 61689 conditions, 17212 events. 9343/17212 cut-off events. For 75260/76175 co-relation queries the response was YES. Maximal size of possible extension queue 821. Compared 145033 event pairs, 1600 based on Foata normal form. 300/16942 useless extension candidates. Maximal degree in co-relation 61585. Up to 4348 conditions per place. [2022-07-12 10:07:18,164 INFO L132 encePairwiseOnDemand]: 125/139 looper letters, 56 selfloop transitions, 33 changer transitions 92/270 dead transitions. [2022-07-12 10:07:18,165 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 270 transitions, 2061 flow [2022-07-12 10:07:18,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-12 10:07:18,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-07-12 10:07:18,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1524 transitions. [2022-07-12 10:07:18,168 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8433868289983398 [2022-07-12 10:07:18,168 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1524 transitions. [2022-07-12 10:07:18,168 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1524 transitions. [2022-07-12 10:07:18,169 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:07:18,169 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1524 transitions. [2022-07-12 10:07:18,171 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 117.23076923076923) internal successors, (1524), 13 states have internal predecessors, (1524), 0 states have call successors, (0), 0 states 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 10:07:18,174 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 139.0) internal successors, (1946), 14 states have internal predecessors, (1946), 0 states have call successors, (0), 0 states 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 10:07:18,174 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 139.0) internal successors, (1946), 14 states have internal predecessors, (1946), 0 states have call successors, (0), 0 states 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 10:07:18,175 INFO L186 Difference]: Start difference. First operand has 173 places, 146 transitions, 786 flow. Second operand 13 states and 1524 transitions. [2022-07-12 10:07:18,175 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 270 transitions, 2061 flow [2022-07-12 10:07:18,395 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 270 transitions, 1933 flow, removed 64 selfloop flow, removed 6 redundant places. [2022-07-12 10:07:18,397 INFO L242 Difference]: Finished difference. Result has 182 places, 152 transitions, 984 flow [2022-07-12 10:07:18,398 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=724, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=984, PETRI_PLACES=182, PETRI_TRANSITIONS=152} [2022-07-12 10:07:18,399 INFO L279 CegarLoopForPetriNet]: 146 programPoint places, 36 predicate places. [2022-07-12 10:07:18,399 INFO L495 AbstractCegarLoop]: Abstraction has has 182 places, 152 transitions, 984 flow [2022-07-12 10:07:18,399 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 108.71428571428571) internal successors, (761), 7 states have internal predecessors, (761), 0 states have call successors, (0), 0 states 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 10:07:18,399 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:07:18,399 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:07:18,400 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-12 10:07:18,400 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-12 10:07:18,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:07:18,400 INFO L85 PathProgramCache]: Analyzing trace with hash 23438117, now seen corresponding path program 1 times [2022-07-12 10:07:18,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:07:18,400 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019737358] [2022-07-12 10:07:18,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:07:18,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:07:18,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:07:18,461 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 10:07:18,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:07:18,461 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019737358] [2022-07-12 10:07:18,461 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2019737358] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:07:18,462 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:07:18,462 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 10:07:18,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259887567] [2022-07-12 10:07:18,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:07:18,462 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 10:07:18,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:07:18,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 10:07:18,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-12 10:07:18,464 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 139 [2022-07-12 10:07:18,464 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 152 transitions, 984 flow. Second operand has 6 states, 6 states have (on average 114.0) internal successors, (684), 6 states have internal predecessors, (684), 0 states have call successors, (0), 0 states 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 10:07:18,464 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:07:18,465 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 139 [2022-07-12 10:07:18,465 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:07:25,402 INFO L129 PetriNetUnfolder]: 28753/50495 cut-off events. [2022-07-12 10:07:25,402 INFO L130 PetriNetUnfolder]: For 124560/137787 co-relation queries the response was YES. [2022-07-12 10:07:25,995 INFO L84 FinitePrefix]: Finished finitePrefix Result has 126319 conditions, 50495 events. 28753/50495 cut-off events. For 124560/137787 co-relation queries the response was YES. Maximal size of possible extension queue 2854. Compared 485146 event pairs, 1705 based on Foata normal form. 463/48728 useless extension candidates. Maximal degree in co-relation 126207. Up to 16092 conditions per place. [2022-07-12 10:07:26,135 INFO L132 encePairwiseOnDemand]: 128/139 looper letters, 109 selfloop transitions, 20 changer transitions 0/255 dead transitions. [2022-07-12 10:07:26,135 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 255 transitions, 1902 flow [2022-07-12 10:07:26,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-12 10:07:26,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-07-12 10:07:26,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1227 transitions. [2022-07-12 10:07:26,138 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8827338129496403 [2022-07-12 10:07:26,138 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1227 transitions. [2022-07-12 10:07:26,139 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1227 transitions. [2022-07-12 10:07:26,139 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:07:26,139 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1227 transitions. [2022-07-12 10:07:26,141 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 122.7) internal successors, (1227), 10 states have internal predecessors, (1227), 0 states have call successors, (0), 0 states 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 10:07:26,143 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 139.0) internal successors, (1529), 11 states have internal predecessors, (1529), 0 states have call successors, (0), 0 states 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 10:07:26,144 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 139.0) internal successors, (1529), 11 states have internal predecessors, (1529), 0 states have call successors, (0), 0 states 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 10:07:26,144 INFO L186 Difference]: Start difference. First operand has 182 places, 152 transitions, 984 flow. Second operand 10 states and 1227 transitions. [2022-07-12 10:07:26,144 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 255 transitions, 1902 flow [2022-07-12 10:07:26,259 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 255 transitions, 1820 flow, removed 41 selfloop flow, removed 12 redundant places. [2022-07-12 10:07:26,262 INFO L242 Difference]: Finished difference. Result has 176 places, 170 transitions, 1087 flow [2022-07-12 10:07:26,262 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=944, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1087, PETRI_PLACES=176, PETRI_TRANSITIONS=170} [2022-07-12 10:07:26,263 INFO L279 CegarLoopForPetriNet]: 146 programPoint places, 30 predicate places. [2022-07-12 10:07:26,263 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 170 transitions, 1087 flow [2022-07-12 10:07:26,263 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 114.0) internal successors, (684), 6 states have internal predecessors, (684), 0 states have call successors, (0), 0 states 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 10:07:26,263 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:07:26,264 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:07:26,264 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-12 10:07:26,264 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-12 10:07:26,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:07:26,264 INFO L85 PathProgramCache]: Analyzing trace with hash -306280705, now seen corresponding path program 1 times [2022-07-12 10:07:26,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:07:26,265 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1355308324] [2022-07-12 10:07:26,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:07:26,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:07:26,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:07:26,343 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 10:07:26,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:07:26,344 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1355308324] [2022-07-12 10:07:26,344 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1355308324] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:07:26,344 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:07:26,344 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 10:07:26,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656913557] [2022-07-12 10:07:26,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:07:26,345 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 10:07:26,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:07:26,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 10:07:26,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-12 10:07:26,346 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 139 [2022-07-12 10:07:26,347 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 170 transitions, 1087 flow. Second operand has 7 states, 7 states have (on average 109.0) internal successors, (763), 7 states have internal predecessors, (763), 0 states have call successors, (0), 0 states 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 10:07:26,347 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:07:26,347 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 139 [2022-07-12 10:07:26,348 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:07:31,125 INFO L129 PetriNetUnfolder]: 11997/31853 cut-off events. [2022-07-12 10:07:31,125 INFO L130 PetriNetUnfolder]: For 110051/115630 co-relation queries the response was YES. [2022-07-12 10:07:31,474 INFO L84 FinitePrefix]: Finished finitePrefix Result has 101006 conditions, 31853 events. 11997/31853 cut-off events. For 110051/115630 co-relation queries the response was YES. Maximal size of possible extension queue 2049. Compared 401160 event pairs, 3469 based on Foata normal form. 546/30334 useless extension candidates. Maximal degree in co-relation 100893. Up to 5959 conditions per place. [2022-07-12 10:07:31,584 INFO L132 encePairwiseOnDemand]: 125/139 looper letters, 128 selfloop transitions, 48 changer transitions 2/285 dead transitions. [2022-07-12 10:07:31,585 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 285 transitions, 2397 flow [2022-07-12 10:07:31,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-12 10:07:31,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-07-12 10:07:31,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1518 transitions. [2022-07-12 10:07:31,588 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8400664084117322 [2022-07-12 10:07:31,588 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1518 transitions. [2022-07-12 10:07:31,588 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1518 transitions. [2022-07-12 10:07:31,589 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:07:31,589 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1518 transitions. [2022-07-12 10:07:31,591 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 116.76923076923077) internal successors, (1518), 13 states have internal predecessors, (1518), 0 states have call successors, (0), 0 states 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 10:07:31,593 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 139.0) internal successors, (1946), 14 states have internal predecessors, (1946), 0 states have call successors, (0), 0 states 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 10:07:31,593 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 139.0) internal successors, (1946), 14 states have internal predecessors, (1946), 0 states have call successors, (0), 0 states 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 10:07:31,594 INFO L186 Difference]: Start difference. First operand has 176 places, 170 transitions, 1087 flow. Second operand 13 states and 1518 transitions. [2022-07-12 10:07:31,594 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 285 transitions, 2397 flow [2022-07-12 10:07:31,919 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 285 transitions, 2340 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-07-12 10:07:31,922 INFO L242 Difference]: Finished difference. Result has 198 places, 195 transitions, 1665 flow [2022-07-12 10:07:31,923 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=1055, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=170, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1665, PETRI_PLACES=198, PETRI_TRANSITIONS=195} [2022-07-12 10:07:31,923 INFO L279 CegarLoopForPetriNet]: 146 programPoint places, 52 predicate places. [2022-07-12 10:07:31,923 INFO L495 AbstractCegarLoop]: Abstraction has has 198 places, 195 transitions, 1665 flow [2022-07-12 10:07:31,924 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 109.0) internal successors, (763), 7 states have internal predecessors, (763), 0 states have call successors, (0), 0 states 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 10:07:31,924 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:07:31,924 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:07:31,924 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-12 10:07:31,924 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-12 10:07:31,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:07:31,924 INFO L85 PathProgramCache]: Analyzing trace with hash -553968997, now seen corresponding path program 1 times [2022-07-12 10:07:31,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:07:31,925 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1841736387] [2022-07-12 10:07:31,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:07:31,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:07:31,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:07:32,042 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 10:07:32,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:07:32,043 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1841736387] [2022-07-12 10:07:32,043 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1841736387] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:07:32,043 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:07:32,043 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 10:07:32,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991371339] [2022-07-12 10:07:32,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:07:32,044 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 10:07:32,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:07:32,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 10:07:32,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-12 10:07:32,045 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 139 [2022-07-12 10:07:32,046 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 195 transitions, 1665 flow. Second operand has 7 states, 7 states have (on average 114.0) internal successors, (798), 7 states have internal predecessors, (798), 0 states have call successors, (0), 0 states 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 10:07:32,046 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:07:32,046 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 139 [2022-07-12 10:07:32,046 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:07:43,257 INFO L129 PetriNetUnfolder]: 39534/71542 cut-off events. [2022-07-12 10:07:43,257 INFO L130 PetriNetUnfolder]: For 260061/275609 co-relation queries the response was YES. [2022-07-12 10:07:44,258 INFO L84 FinitePrefix]: Finished finitePrefix Result has 237966 conditions, 71542 events. 39534/71542 cut-off events. For 260061/275609 co-relation queries the response was YES. Maximal size of possible extension queue 4339. Compared 752760 event pairs, 1651 based on Foata normal form. 1817/71689 useless extension candidates. Maximal degree in co-relation 237842. Up to 15427 conditions per place. [2022-07-12 10:07:44,380 INFO L132 encePairwiseOnDemand]: 128/139 looper letters, 138 selfloop transitions, 38 changer transitions 17/337 dead transitions. [2022-07-12 10:07:44,380 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 337 transitions, 3330 flow [2022-07-12 10:07:44,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-12 10:07:44,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-07-12 10:07:44,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1600 transitions. [2022-07-12 10:07:44,384 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8854454897620365 [2022-07-12 10:07:44,384 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1600 transitions. [2022-07-12 10:07:44,384 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1600 transitions. [2022-07-12 10:07:44,385 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:07:44,385 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1600 transitions. [2022-07-12 10:07:44,387 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 123.07692307692308) internal successors, (1600), 13 states have internal predecessors, (1600), 0 states have call successors, (0), 0 states 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 10:07:44,389 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 139.0) internal successors, (1946), 14 states have internal predecessors, (1946), 0 states have call successors, (0), 0 states 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 10:07:44,390 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 139.0) internal successors, (1946), 14 states have internal predecessors, (1946), 0 states have call successors, (0), 0 states 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 10:07:44,390 INFO L186 Difference]: Start difference. First operand has 198 places, 195 transitions, 1665 flow. Second operand 13 states and 1600 transitions. [2022-07-12 10:07:44,390 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 337 transitions, 3330 flow [2022-07-12 10:07:48,600 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 337 transitions, 3234 flow, removed 48 selfloop flow, removed 0 redundant places. [2022-07-12 10:07:48,603 INFO L242 Difference]: Finished difference. Result has 216 places, 208 transitions, 1731 flow [2022-07-12 10:07:48,604 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=1569, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1731, PETRI_PLACES=216, PETRI_TRANSITIONS=208} [2022-07-12 10:07:48,604 INFO L279 CegarLoopForPetriNet]: 146 programPoint places, 70 predicate places. [2022-07-12 10:07:48,605 INFO L495 AbstractCegarLoop]: Abstraction has has 216 places, 208 transitions, 1731 flow [2022-07-12 10:07:48,605 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 114.0) internal successors, (798), 7 states have internal predecessors, (798), 0 states have call successors, (0), 0 states 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 10:07:48,605 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:07:48,605 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:07:48,605 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-12 10:07:48,606 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-12 10:07:48,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:07:48,606 INFO L85 PathProgramCache]: Analyzing trace with hash -425085834, now seen corresponding path program 1 times [2022-07-12 10:07:48,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:07:48,606 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [190154663] [2022-07-12 10:07:48,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:07:48,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:07:48,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:07:48,714 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 10:07:48,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:07:48,715 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [190154663] [2022-07-12 10:07:48,715 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [190154663] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:07:48,715 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:07:48,715 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 10:07:48,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907935165] [2022-07-12 10:07:48,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:07:48,716 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 10:07:48,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:07:48,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 10:07:48,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 10:07:48,717 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 139 [2022-07-12 10:07:48,718 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 208 transitions, 1731 flow. Second operand has 7 states, 7 states have (on average 107.57142857142857) internal successors, (753), 7 states have internal predecessors, (753), 0 states have call successors, (0), 0 states 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 10:07:48,718 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:07:48,718 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 139 [2022-07-12 10:07:48,718 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand