./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-wmm/mix030_power.oepc_pso.oepc_rmo.oepc.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 35987657 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/pthread-wmm/mix030_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 a6d0914923ba77f2cbf67d52dc6ec759519359118cb2f8fd5f254f95bf2b938e --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-21 08:40:45,510 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 08:40:45,511 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 08:40:45,542 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 08:40:45,543 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 08:40:45,544 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 08:40:45,544 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 08:40:45,546 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 08:40:45,547 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 08:40:45,547 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-21 08:40:45,548 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-21 08:40:45,549 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 08:40:45,549 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 08:40:45,550 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 08:40:45,551 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 08:40:45,552 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 08:40:45,552 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 08:40:45,553 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 08:40:45,554 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 08:40:45,556 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 08:40:45,557 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 08:40:45,558 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 08:40:45,558 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 08:40:45,559 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 08:40:45,560 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 08:40:45,562 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 08:40:45,563 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 08:40:45,563 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 08:40:45,563 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 08:40:45,564 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 08:40:45,564 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 08:40:45,565 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 08:40:45,565 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 08:40:45,566 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 08:40:45,567 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 08:40:45,568 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 08:40:45,570 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 08:40:45,571 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 08:40:45,571 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 08:40:45,572 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 08:40:45,572 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 08:40:45,574 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 08:40:45,576 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-21 08:40:45,611 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 08:40:45,612 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 08:40:45,613 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 08:40:45,613 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 08:40:45,613 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 08:40:45,613 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 08:40:45,614 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 08:40:45,614 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 08:40:45,614 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 08:40:45,615 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 08:40:45,615 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-21 08:40:45,615 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-21 08:40:45,615 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-21 08:40:45,616 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 08:40:45,616 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-21 08:40:45,616 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 08:40:45,616 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-21 08:40:45,616 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-21 08:40:45,616 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-21 08:40:45,617 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 08:40:45,617 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-21 08:40:45,617 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 08:40:45,617 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 08:40:45,617 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 08:40:45,618 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 08:40:45,618 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 08:40:45,618 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 08:40:45,618 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-21 08:40:45,618 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-21 08:40:45,618 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-21 08:40:45,619 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-21 08:40:45,619 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-21 08:40:45,619 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-21 08:40:45,619 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a6d0914923ba77f2cbf67d52dc6ec759519359118cb2f8fd5f254f95bf2b938e [2022-07-21 08:40:45,913 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 08:40:45,949 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 08:40:45,951 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 08:40:45,952 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 08:40:45,953 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 08:40:45,954 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/mix030_power.oepc_pso.oepc_rmo.oepc.i [2022-07-21 08:40:46,013 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2cba7bcef/080c9b58c15c40b68d57c18f79371387/FLAGd7149136d [2022-07-21 08:40:46,435 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 08:40:46,436 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/mix030_power.oepc_pso.oepc_rmo.oepc.i [2022-07-21 08:40:46,451 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2cba7bcef/080c9b58c15c40b68d57c18f79371387/FLAGd7149136d [2022-07-21 08:40:46,767 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2cba7bcef/080c9b58c15c40b68d57c18f79371387 [2022-07-21 08:40:46,769 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 08:40:46,771 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 08:40:46,773 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 08:40:46,773 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 08:40:46,775 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 08:40:46,776 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 08:40:46" (1/1) ... [2022-07-21 08:40:46,777 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@453a610a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:40:46, skipping insertion in model container [2022-07-21 08:40:46,777 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 08:40:46" (1/1) ... [2022-07-21 08:40:46,782 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 08:40:46,822 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 08:40:46,946 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/mix030_power.oepc_pso.oepc_rmo.oepc.i[969,982] [2022-07-21 08:40:47,151 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 08:40:47,160 INFO L203 MainTranslator]: Completed pre-run [2022-07-21 08:40:47,169 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/mix030_power.oepc_pso.oepc_rmo.oepc.i[969,982] [2022-07-21 08:40:47,216 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 08:40:47,249 INFO L208 MainTranslator]: Completed translation [2022-07-21 08:40:47,250 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:40:47 WrapperNode [2022-07-21 08:40:47,250 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-21 08:40:47,250 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-21 08:40:47,251 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-21 08:40:47,251 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-21 08:40:47,255 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:40:47" (1/1) ... [2022-07-21 08:40:47,291 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:40:47" (1/1) ... [2022-07-21 08:40:47,327 INFO L137 Inliner]: procedures = 177, calls = 69, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 191 [2022-07-21 08:40:47,327 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-21 08:40:47,328 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-21 08:40:47,328 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-21 08:40:47,328 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-21 08:40:47,334 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:40:47" (1/1) ... [2022-07-21 08:40:47,334 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:40:47" (1/1) ... [2022-07-21 08:40:47,339 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:40:47" (1/1) ... [2022-07-21 08:40:47,339 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:40:47" (1/1) ... [2022-07-21 08:40:47,346 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:40:47" (1/1) ... [2022-07-21 08:40:47,348 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:40:47" (1/1) ... [2022-07-21 08:40:47,349 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:40:47" (1/1) ... [2022-07-21 08:40:47,352 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-21 08:40:47,352 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-21 08:40:47,353 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-21 08:40:47,353 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-21 08:40:47,353 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:40:47" (1/1) ... [2022-07-21 08:40:47,367 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 08:40:47,376 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 08:40:47,386 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-21 08:40:47,404 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-21 08:40:47,421 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-21 08:40:47,421 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-07-21 08:40:47,421 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-21 08:40:47,421 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-21 08:40:47,422 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-21 08:40:47,422 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2022-07-21 08:40:47,422 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2022-07-21 08:40:47,422 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2022-07-21 08:40:47,422 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2022-07-21 08:40:47,422 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2022-07-21 08:40:47,422 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2022-07-21 08:40:47,423 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2022-07-21 08:40:47,423 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2022-07-21 08:40:47,423 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-21 08:40:47,423 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-07-21 08:40:47,423 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-21 08:40:47,423 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-21 08:40:47,425 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-07-21 08:40:47,558 INFO L234 CfgBuilder]: Building ICFG [2022-07-21 08:40:47,559 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-21 08:40:47,882 INFO L275 CfgBuilder]: Performing block encoding [2022-07-21 08:40:48,094 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-21 08:40:48,094 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-21 08:40:48,096 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 08:40:48 BoogieIcfgContainer [2022-07-21 08:40:48,096 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-21 08:40:48,098 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-21 08:40:48,098 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-21 08:40:48,100 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-21 08:40:48,100 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 08:40:46" (1/3) ... [2022-07-21 08:40:48,100 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a83a7fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 08:40:48, skipping insertion in model container [2022-07-21 08:40:48,100 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:40:47" (2/3) ... [2022-07-21 08:40:48,101 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a83a7fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 08:40:48, skipping insertion in model container [2022-07-21 08:40:48,101 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 08:40:48" (3/3) ... [2022-07-21 08:40:48,102 INFO L111 eAbstractionObserver]: Analyzing ICFG mix030_power.oepc_pso.oepc_rmo.oepc.i [2022-07-21 08:40:48,105 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-21 08:40:48,110 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-21 08:40:48,111 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-21 08:40:48,111 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-21 08:40:48,170 INFO L135 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-07-21 08:40:48,195 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 147 places, 136 transitions, 292 flow [2022-07-21 08:40:48,227 INFO L129 PetriNetUnfolder]: 2/132 cut-off events. [2022-07-21 08:40:48,227 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-07-21 08:40:48,230 INFO L84 FinitePrefix]: Finished finitePrefix Result has 145 conditions, 132 events. 2/132 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 68 event pairs, 0 based on Foata normal form. 0/128 useless extension candidates. Maximal degree in co-relation 92. Up to 2 conditions per place. [2022-07-21 08:40:48,230 INFO L82 GeneralOperation]: Start removeDead. Operand has 147 places, 136 transitions, 292 flow [2022-07-21 08:40:48,233 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 143 places, 132 transitions, 276 flow [2022-07-21 08:40:48,239 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-21 08:40:48,244 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@2f8f3988, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@61006265 [2022-07-21 08:40:48,244 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2022-07-21 08:40:48,257 INFO L129 PetriNetUnfolder]: 0/48 cut-off events. [2022-07-21 08:40:48,257 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-07-21 08:40:48,257 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:40:48,258 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] [2022-07-21 08:40:48,259 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P0Err0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-21 08:40:48,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:40:48,262 INFO L85 PathProgramCache]: Analyzing trace with hash 241967491, now seen corresponding path program 1 times [2022-07-21 08:40:48,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:40:48,268 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688918640] [2022-07-21 08:40:48,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:40:48,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:40:48,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:40:48,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:40:48,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:40:48,528 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1688918640] [2022-07-21 08:40:48,528 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1688918640] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:40:48,528 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:40:48,528 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-21 08:40:48,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143370481] [2022-07-21 08:40:48,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:40:48,536 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 08:40:48,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:40:48,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 08:40:48,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 08:40:48,563 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 136 [2022-07-21 08:40:48,566 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 132 transitions, 276 flow. Second operand has 3 states, 3 states have (on average 121.0) internal successors, (363), 3 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:40:48,566 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:40:48,566 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 136 [2022-07-21 08:40:48,567 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:40:48,793 INFO L129 PetriNetUnfolder]: 162/546 cut-off events. [2022-07-21 08:40:48,794 INFO L130 PetriNetUnfolder]: For 22/22 co-relation queries the response was YES. [2022-07-21 08:40:48,799 INFO L84 FinitePrefix]: Finished finitePrefix Result has 852 conditions, 546 events. 162/546 cut-off events. For 22/22 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 2819 event pairs, 34 based on Foata normal form. 49/566 useless extension candidates. Maximal degree in co-relation 796. Up to 191 conditions per place. [2022-07-21 08:40:48,803 INFO L132 encePairwiseOnDemand]: 131/136 looper letters, 18 selfloop transitions, 2 changer transitions 0/136 dead transitions. [2022-07-21 08:40:48,803 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 136 transitions, 333 flow [2022-07-21 08:40:48,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 08:40:48,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-21 08:40:48,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 385 transitions. [2022-07-21 08:40:48,822 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9436274509803921 [2022-07-21 08:40:48,822 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 385 transitions. [2022-07-21 08:40:48,823 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 385 transitions. [2022-07-21 08:40:48,827 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:40:48,829 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 385 transitions. [2022-07-21 08:40:48,834 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 128.33333333333334) internal successors, (385), 3 states have internal predecessors, (385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:40:48,848 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 136.0) internal successors, (544), 4 states have internal predecessors, (544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:40:48,849 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 136.0) internal successors, (544), 4 states have internal predecessors, (544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:40:48,850 INFO L186 Difference]: Start difference. First operand has 143 places, 132 transitions, 276 flow. Second operand 3 states and 385 transitions. [2022-07-21 08:40:48,851 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 136 transitions, 333 flow [2022-07-21 08:40:48,854 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 136 transitions, 326 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-07-21 08:40:48,857 INFO L242 Difference]: Finished difference. Result has 139 places, 128 transitions, 268 flow [2022-07-21 08:40:48,858 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=136, PETRI_DIFFERENCE_MINUEND_FLOW=264, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=268, PETRI_PLACES=139, PETRI_TRANSITIONS=128} [2022-07-21 08:40:48,861 INFO L279 CegarLoopForPetriNet]: 143 programPoint places, -4 predicate places. [2022-07-21 08:40:48,861 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 128 transitions, 268 flow [2022-07-21 08:40:48,862 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 121.0) internal successors, (363), 3 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:40:48,862 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:40:48,862 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] [2022-07-21 08:40:48,862 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-21 08:40:48,862 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)] === [2022-07-21 08:40:48,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:40:48,863 INFO L85 PathProgramCache]: Analyzing trace with hash -619394308, now seen corresponding path program 1 times [2022-07-21 08:40:48,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:40:48,863 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816355047] [2022-07-21 08:40:48,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:40:48,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:40:48,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:40:49,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:40:49,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:40:49,099 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816355047] [2022-07-21 08:40:49,100 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [816355047] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:40:49,102 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:40:49,102 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 08:40:49,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723256996] [2022-07-21 08:40:49,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:40:49,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 08:40:49,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:40:49,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 08:40:49,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-21 08:40:49,107 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 136 [2022-07-21 08:40:49,111 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 128 transitions, 268 flow. Second operand has 6 states, 6 states have (on average 104.66666666666667) internal successors, (628), 6 states have internal predecessors, (628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:40:49,112 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:40:49,112 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 136 [2022-07-21 08:40:49,112 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:40:53,851 INFO L129 PetriNetUnfolder]: 21069/43826 cut-off events. [2022-07-21 08:40:53,851 INFO L130 PetriNetUnfolder]: For 1735/1735 co-relation queries the response was YES. [2022-07-21 08:40:53,953 INFO L84 FinitePrefix]: Finished finitePrefix Result has 74300 conditions, 43826 events. 21069/43826 cut-off events. For 1735/1735 co-relation queries the response was YES. Maximal size of possible extension queue 1835. Compared 465080 event pairs, 4146 based on Foata normal form. 0/42804 useless extension candidates. Maximal degree in co-relation 74241. Up to 9439 conditions per place. [2022-07-21 08:40:54,055 INFO L132 encePairwiseOnDemand]: 121/136 looper letters, 38 selfloop transitions, 11 changer transitions 102/236 dead transitions. [2022-07-21 08:40:54,055 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 236 transitions, 778 flow [2022-07-21 08:40:54,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-21 08:40:54,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-07-21 08:40:54,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1058 transitions. [2022-07-21 08:40:54,058 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8643790849673203 [2022-07-21 08:40:54,059 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1058 transitions. [2022-07-21 08:40:54,059 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1058 transitions. [2022-07-21 08:40:54,059 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:40:54,059 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1058 transitions. [2022-07-21 08:40:54,062 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 117.55555555555556) internal successors, (1058), 9 states have internal predecessors, (1058), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:40:54,064 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 136.0) internal successors, (1360), 10 states have internal predecessors, (1360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:40:54,064 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 136.0) internal successors, (1360), 10 states have internal predecessors, (1360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:40:54,064 INFO L186 Difference]: Start difference. First operand has 139 places, 128 transitions, 268 flow. Second operand 9 states and 1058 transitions. [2022-07-21 08:40:54,065 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 236 transitions, 778 flow [2022-07-21 08:40:54,067 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 236 transitions, 760 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-07-21 08:40:54,069 INFO L242 Difference]: Finished difference. Result has 153 places, 122 transitions, 374 flow [2022-07-21 08:40:54,069 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=136, PETRI_DIFFERENCE_MINUEND_FLOW=264, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=374, PETRI_PLACES=153, PETRI_TRANSITIONS=122} [2022-07-21 08:40:54,070 INFO L279 CegarLoopForPetriNet]: 143 programPoint places, 10 predicate places. [2022-07-21 08:40:54,070 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 122 transitions, 374 flow [2022-07-21 08:40:54,071 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 104.66666666666667) internal successors, (628), 6 states have internal predecessors, (628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:40:54,071 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:40:54,071 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] [2022-07-21 08:40:54,072 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-21 08:40:54,072 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)] === [2022-07-21 08:40:54,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:40:54,073 INFO L85 PathProgramCache]: Analyzing trace with hash -61313541, now seen corresponding path program 1 times [2022-07-21 08:40:54,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:40:54,073 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27525230] [2022-07-21 08:40:54,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:40:54,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:40:54,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:40:54,199 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:40:54,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:40:54,200 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27525230] [2022-07-21 08:40:54,200 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [27525230] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:40:54,200 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:40:54,201 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 08:40:54,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596498414] [2022-07-21 08:40:54,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:40:54,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 08:40:54,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:40:54,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 08:40:54,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-21 08:40:54,203 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 136 [2022-07-21 08:40:54,204 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 122 transitions, 374 flow. Second operand has 7 states, 7 states have (on average 104.42857142857143) internal successors, (731), 7 states have internal predecessors, (731), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:40:54,204 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:40:54,204 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 136 [2022-07-21 08:40:54,204 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:40:57,386 INFO L129 PetriNetUnfolder]: 16182/26980 cut-off events. [2022-07-21 08:40:57,386 INFO L130 PetriNetUnfolder]: For 49365/49365 co-relation queries the response was YES. [2022-07-21 08:40:57,508 INFO L84 FinitePrefix]: Finished finitePrefix Result has 84502 conditions, 26980 events. 16182/26980 cut-off events. For 49365/49365 co-relation queries the response was YES. Maximal size of possible extension queue 1351. Compared 219197 event pairs, 1446 based on Foata normal form. 538/27090 useless extension candidates. Maximal degree in co-relation 84431. Up to 7483 conditions per place. [2022-07-21 08:40:57,597 INFO L132 encePairwiseOnDemand]: 120/136 looper letters, 49 selfloop transitions, 16 changer transitions 133/283 dead transitions. [2022-07-21 08:40:57,597 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 283 transitions, 1710 flow [2022-07-21 08:40:57,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-21 08:40:57,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-07-21 08:40:57,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1503 transitions. [2022-07-21 08:40:57,601 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8501131221719457 [2022-07-21 08:40:57,601 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1503 transitions. [2022-07-21 08:40:57,601 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1503 transitions. [2022-07-21 08:40:57,602 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:40:57,602 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1503 transitions. [2022-07-21 08:40:57,604 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 115.61538461538461) internal successors, (1503), 13 states have internal predecessors, (1503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:40:57,607 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 136.0) internal successors, (1904), 14 states have internal predecessors, (1904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:40:57,608 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 136.0) internal successors, (1904), 14 states have internal predecessors, (1904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:40:57,608 INFO L186 Difference]: Start difference. First operand has 153 places, 122 transitions, 374 flow. Second operand 13 states and 1503 transitions. [2022-07-21 08:40:57,608 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 283 transitions, 1710 flow [2022-07-21 08:40:57,650 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 283 transitions, 1592 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-07-21 08:40:57,655 INFO L242 Difference]: Finished difference. Result has 155 places, 130 transitions, 528 flow [2022-07-21 08:40:57,656 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=136, PETRI_DIFFERENCE_MINUEND_FLOW=352, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=528, PETRI_PLACES=155, PETRI_TRANSITIONS=130} [2022-07-21 08:40:57,658 INFO L279 CegarLoopForPetriNet]: 143 programPoint places, 12 predicate places. [2022-07-21 08:40:57,658 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 130 transitions, 528 flow [2022-07-21 08:40:57,660 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 104.42857142857143) internal successors, (731), 7 states have internal predecessors, (731), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:40:57,660 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:40:57,660 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] [2022-07-21 08:40:57,660 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-21 08:40:57,661 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)] === [2022-07-21 08:40:57,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:40:57,661 INFO L85 PathProgramCache]: Analyzing trace with hash 334177501, now seen corresponding path program 1 times [2022-07-21 08:40:57,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:40:57,662 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2660560] [2022-07-21 08:40:57,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:40:57,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:40:57,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:40:57,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:40:57,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:40:57,828 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2660560] [2022-07-21 08:40:57,828 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2660560] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:40:57,828 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:40:57,828 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 08:40:57,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109346230] [2022-07-21 08:40:57,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:40:57,831 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 08:40:57,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:40:57,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 08:40:57,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-21 08:40:57,834 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 136 [2022-07-21 08:40:57,835 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 130 transitions, 528 flow. Second operand has 7 states, 7 states have (on average 104.42857142857143) internal successors, (731), 7 states have internal predecessors, (731), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:40:57,835 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:40:57,835 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 136 [2022-07-21 08:40:57,836 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:41:01,079 INFO L129 PetriNetUnfolder]: 14142/22995 cut-off events. [2022-07-21 08:41:01,079 INFO L130 PetriNetUnfolder]: For 92410/92410 co-relation queries the response was YES. [2022-07-21 08:41:01,171 INFO L84 FinitePrefix]: Finished finitePrefix Result has 86773 conditions, 22995 events. 14142/22995 cut-off events. For 92410/92410 co-relation queries the response was YES. Maximal size of possible extension queue 1136. Compared 174537 event pairs, 2656 based on Foata normal form. 450/22876 useless extension candidates. Maximal degree in co-relation 86686. Up to 6590 conditions per place. [2022-07-21 08:41:01,262 INFO L132 encePairwiseOnDemand]: 121/136 looper letters, 58 selfloop transitions, 23 changer transitions 121/287 dead transitions. [2022-07-21 08:41:01,262 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 287 transitions, 2008 flow [2022-07-21 08:41:01,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-21 08:41:01,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-07-21 08:41:01,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1501 transitions. [2022-07-21 08:41:01,265 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8489819004524887 [2022-07-21 08:41:01,266 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1501 transitions. [2022-07-21 08:41:01,266 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1501 transitions. [2022-07-21 08:41:01,266 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:41:01,267 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1501 transitions. [2022-07-21 08:41:01,269 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 115.46153846153847) internal successors, (1501), 13 states have internal predecessors, (1501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:41:01,271 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 136.0) internal successors, (1904), 14 states have internal predecessors, (1904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:41:01,272 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 136.0) internal successors, (1904), 14 states have internal predecessors, (1904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:41:01,272 INFO L186 Difference]: Start difference. First operand has 155 places, 130 transitions, 528 flow. Second operand 13 states and 1501 transitions. [2022-07-21 08:41:01,272 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 287 transitions, 2008 flow [2022-07-21 08:41:01,503 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 287 transitions, 1960 flow, removed 24 selfloop flow, removed 0 redundant places. [2022-07-21 08:41:01,506 INFO L242 Difference]: Finished difference. Result has 170 places, 143 transitions, 796 flow [2022-07-21 08:41:01,506 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=136, PETRI_DIFFERENCE_MINUEND_FLOW=516, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=796, PETRI_PLACES=170, PETRI_TRANSITIONS=143} [2022-07-21 08:41:01,507 INFO L279 CegarLoopForPetriNet]: 143 programPoint places, 27 predicate places. [2022-07-21 08:41:01,507 INFO L495 AbstractCegarLoop]: Abstraction has has 170 places, 143 transitions, 796 flow [2022-07-21 08:41:01,507 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 104.42857142857143) internal successors, (731), 7 states have internal predecessors, (731), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:41:01,508 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:41:01,508 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] [2022-07-21 08:41:01,508 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-21 08:41:01,508 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)] === [2022-07-21 08:41:01,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:41:01,509 INFO L85 PathProgramCache]: Analyzing trace with hash -1640757958, now seen corresponding path program 1 times [2022-07-21 08:41:01,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:41:01,509 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [332621894] [2022-07-21 08:41:01,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:41:01,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:41:01,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:41:01,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:41:01,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:41:01,584 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [332621894] [2022-07-21 08:41:01,584 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [332621894] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:41:01,585 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:41:01,585 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 08:41:01,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593096901] [2022-07-21 08:41:01,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:41:01,585 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 08:41:01,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:41:01,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 08:41:01,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-21 08:41:01,587 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 136 [2022-07-21 08:41:01,587 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 143 transitions, 796 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) [2022-07-21 08:41:01,587 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:41:01,588 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 136 [2022-07-21 08:41:01,588 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:41:04,067 INFO L129 PetriNetUnfolder]: 8512/15207 cut-off events. [2022-07-21 08:41:04,068 INFO L130 PetriNetUnfolder]: For 82362/86903 co-relation queries the response was YES. [2022-07-21 08:41:04,185 INFO L84 FinitePrefix]: Finished finitePrefix Result has 57810 conditions, 15207 events. 8512/15207 cut-off events. For 82362/86903 co-relation queries the response was YES. Maximal size of possible extension queue 948. Compared 126625 event pairs, 1806 based on Foata normal form. 1074/15702 useless extension candidates. Maximal degree in co-relation 57709. Up to 5515 conditions per place. [2022-07-21 08:41:04,252 INFO L132 encePairwiseOnDemand]: 130/136 looper letters, 24 selfloop transitions, 4 changer transitions 46/194 dead transitions. [2022-07-21 08:41:04,253 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 194 transitions, 1208 flow [2022-07-21 08:41:04,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-21 08:41:04,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-07-21 08:41:04,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1074 transitions. [2022-07-21 08:41:04,256 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8774509803921569 [2022-07-21 08:41:04,256 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1074 transitions. [2022-07-21 08:41:04,257 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1074 transitions. [2022-07-21 08:41:04,257 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:41:04,257 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1074 transitions. [2022-07-21 08:41:04,259 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 119.33333333333333) internal successors, (1074), 9 states have internal predecessors, (1074), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:41:04,261 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 136.0) internal successors, (1360), 10 states have internal predecessors, (1360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:41:04,261 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 136.0) internal successors, (1360), 10 states have internal predecessors, (1360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:41:04,261 INFO L186 Difference]: Start difference. First operand has 170 places, 143 transitions, 796 flow. Second operand 9 states and 1074 transitions. [2022-07-21 08:41:04,261 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 194 transitions, 1208 flow [2022-07-21 08:41:04,578 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 194 transitions, 1128 flow, removed 40 selfloop flow, removed 6 redundant places. [2022-07-21 08:41:04,580 INFO L242 Difference]: Finished difference. Result has 170 places, 143 transitions, 758 flow [2022-07-21 08:41:04,581 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=136, PETRI_DIFFERENCE_MINUEND_FLOW=732, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=758, PETRI_PLACES=170, PETRI_TRANSITIONS=143} [2022-07-21 08:41:04,581 INFO L279 CegarLoopForPetriNet]: 143 programPoint places, 27 predicate places. [2022-07-21 08:41:04,581 INFO L495 AbstractCegarLoop]: Abstraction has has 170 places, 143 transitions, 758 flow [2022-07-21 08:41:04,582 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) [2022-07-21 08:41:04,582 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:41:04,582 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] [2022-07-21 08:41:04,582 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-21 08:41:04,582 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)] === [2022-07-21 08:41:04,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:41:04,583 INFO L85 PathProgramCache]: Analyzing trace with hash -1479970143, now seen corresponding path program 1 times [2022-07-21 08:41:04,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:41:04,583 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582635065] [2022-07-21 08:41:04,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:41:04,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:41:04,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:41:04,694 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:41:04,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:41:04,694 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [582635065] [2022-07-21 08:41:04,694 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [582635065] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:41:04,694 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:41:04,695 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 08:41:04,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536506747] [2022-07-21 08:41:04,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:41:04,695 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 08:41:04,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:41:04,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 08:41:04,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-21 08:41:04,696 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 136 [2022-07-21 08:41:04,697 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 143 transitions, 758 flow. Second operand has 7 states, 7 states have (on average 104.71428571428571) internal successors, (733), 7 states have internal predecessors, (733), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:41:04,697 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:41:04,697 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 136 [2022-07-21 08:41:04,697 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:41:07,223 INFO L129 PetriNetUnfolder]: 9563/16706 cut-off events. [2022-07-21 08:41:07,223 INFO L130 PetriNetUnfolder]: For 101728/101728 co-relation queries the response was YES. [2022-07-21 08:41:07,371 INFO L84 FinitePrefix]: Finished finitePrefix Result has 68262 conditions, 16706 events. 9563/16706 cut-off events. For 101728/101728 co-relation queries the response was YES. Maximal size of possible extension queue 793. Compared 132484 event pairs, 1016 based on Foata normal form. 280/16463 useless extension candidates. Maximal degree in co-relation 68155. Up to 4622 conditions per place. [2022-07-21 08:41:07,436 INFO L132 encePairwiseOnDemand]: 120/136 looper letters, 62 selfloop transitions, 33 changer transitions 109/289 dead transitions. [2022-07-21 08:41:07,436 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 289 transitions, 2412 flow [2022-07-21 08:41:07,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-21 08:41:07,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-07-21 08:41:07,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1490 transitions. [2022-07-21 08:41:07,440 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8427601809954751 [2022-07-21 08:41:07,440 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1490 transitions. [2022-07-21 08:41:07,440 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1490 transitions. [2022-07-21 08:41:07,441 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:41:07,441 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1490 transitions. [2022-07-21 08:41:07,443 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 114.61538461538461) internal successors, (1490), 13 states have internal predecessors, (1490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:41:07,446 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 136.0) internal successors, (1904), 14 states have internal predecessors, (1904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:41:07,446 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 136.0) internal successors, (1904), 14 states have internal predecessors, (1904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:41:07,446 INFO L186 Difference]: Start difference. First operand has 170 places, 143 transitions, 758 flow. Second operand 13 states and 1490 transitions. [2022-07-21 08:41:07,447 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 289 transitions, 2412 flow [2022-07-21 08:41:07,629 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 289 transitions, 2320 flow, removed 40 selfloop flow, removed 15 redundant places. [2022-07-21 08:41:07,631 INFO L242 Difference]: Finished difference. Result has 173 places, 157 transitions, 1073 flow [2022-07-21 08:41:07,632 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=136, PETRI_DIFFERENCE_MINUEND_FLOW=714, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1073, PETRI_PLACES=173, PETRI_TRANSITIONS=157} [2022-07-21 08:41:07,635 INFO L279 CegarLoopForPetriNet]: 143 programPoint places, 30 predicate places. [2022-07-21 08:41:07,635 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 157 transitions, 1073 flow [2022-07-21 08:41:07,635 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 104.71428571428571) internal successors, (733), 7 states have internal predecessors, (733), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:41:07,636 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:41:07,636 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] [2022-07-21 08:41:07,636 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-21 08:41:07,636 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)] === [2022-07-21 08:41:07,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:41:07,636 INFO L85 PathProgramCache]: Analyzing trace with hash 869168544, now seen corresponding path program 1 times [2022-07-21 08:41:07,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:41:07,637 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074165217] [2022-07-21 08:41:07,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:41:07,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:41:07,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:41:07,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:41:07,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:41:07,768 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2074165217] [2022-07-21 08:41:07,768 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2074165217] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:41:07,768 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:41:07,768 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 08:41:07,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331744129] [2022-07-21 08:41:07,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:41:07,773 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 08:41:07,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:41:07,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 08:41:07,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-21 08:41:07,775 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 136 [2022-07-21 08:41:07,776 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 157 transitions, 1073 flow. Second operand has 7 states, 7 states have (on average 104.85714285714286) internal successors, (734), 7 states have internal predecessors, (734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:41:07,777 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:41:07,777 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 136 [2022-07-21 08:41:07,777 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:41:10,559 INFO L129 PetriNetUnfolder]: 11015/18803 cut-off events. [2022-07-21 08:41:10,560 INFO L130 PetriNetUnfolder]: For 147951/147951 co-relation queries the response was YES. [2022-07-21 08:41:10,683 INFO L84 FinitePrefix]: Finished finitePrefix Result has 83200 conditions, 18803 events. 11015/18803 cut-off events. For 147951/147951 co-relation queries the response was YES. Maximal size of possible extension queue 908. Compared 151124 event pairs, 1912 based on Foata normal form. 284/18763 useless extension candidates. Maximal degree in co-relation 83087. Up to 4484 conditions per place. [2022-07-21 08:41:10,747 INFO L132 encePairwiseOnDemand]: 121/136 looper letters, 62 selfloop transitions, 42 changer transitions 100/289 dead transitions. [2022-07-21 08:41:10,747 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 289 transitions, 2641 flow [2022-07-21 08:41:10,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-21 08:41:10,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-07-21 08:41:10,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1481 transitions. [2022-07-21 08:41:10,750 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8376696832579186 [2022-07-21 08:41:10,750 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1481 transitions. [2022-07-21 08:41:10,750 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1481 transitions. [2022-07-21 08:41:10,751 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:41:10,751 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1481 transitions. [2022-07-21 08:41:10,753 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 113.92307692307692) internal successors, (1481), 13 states have internal predecessors, (1481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:41:10,755 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 136.0) internal successors, (1904), 14 states have internal predecessors, (1904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:41:10,756 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 136.0) internal successors, (1904), 14 states have internal predecessors, (1904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:41:10,756 INFO L186 Difference]: Start difference. First operand has 173 places, 157 transitions, 1073 flow. Second operand 13 states and 1481 transitions. [2022-07-21 08:41:10,756 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 289 transitions, 2641 flow [2022-07-21 08:41:11,150 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 289 transitions, 2511 flow, removed 65 selfloop flow, removed 2 redundant places. [2022-07-21 08:41:11,153 INFO L242 Difference]: Finished difference. Result has 186 places, 161 transitions, 1328 flow [2022-07-21 08:41:11,153 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=136, PETRI_DIFFERENCE_MINUEND_FLOW=1045, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=157, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1328, PETRI_PLACES=186, PETRI_TRANSITIONS=161} [2022-07-21 08:41:11,154 INFO L279 CegarLoopForPetriNet]: 143 programPoint places, 43 predicate places. [2022-07-21 08:41:11,154 INFO L495 AbstractCegarLoop]: Abstraction has has 186 places, 161 transitions, 1328 flow [2022-07-21 08:41:11,154 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 104.85714285714286) internal successors, (734), 7 states have internal predecessors, (734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:41:11,154 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:41:11,155 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] [2022-07-21 08:41:11,155 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-21 08:41:11,155 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)] === [2022-07-21 08:41:11,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:41:11,155 INFO L85 PathProgramCache]: Analyzing trace with hash -262640256, now seen corresponding path program 1 times [2022-07-21 08:41:11,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:41:11,156 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1111514772] [2022-07-21 08:41:11,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:41:11,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:41:11,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:41:11,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:41:11,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:41:11,243 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1111514772] [2022-07-21 08:41:11,243 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1111514772] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:41:11,243 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:41:11,243 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 08:41:11,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824965937] [2022-07-21 08:41:11,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:41:11,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 08:41:11,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:41:11,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 08:41:11,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-21 08:41:11,246 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 136 [2022-07-21 08:41:11,246 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 161 transitions, 1328 flow. Second operand has 6 states, 6 states have (on average 111.0) internal successors, (666), 6 states have internal predecessors, (666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:41:11,246 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:41:11,246 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 136 [2022-07-21 08:41:11,247 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:41:19,536 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([1109] L762-->L769: Formula: (let ((.cse0 (= (mod v_~a$w_buff0_used~0_493 256) 0)) (.cse2 (= (mod v_~a$r_buff1_thd1~0_50 256) 0)) (.cse13 (= (mod v_~a$w_buff1_used~0_350 256) 0)) (.cse12 (= (mod v_~a$r_buff0_thd1~0_75 256) 0)) (.cse14 (= (mod v_~a$w_buff0_used~0_494 256) 0))) (let ((.cse7 (not .cse14)) (.cse6 (or .cse12 .cse14)) (.cse9 (not .cse13)) (.cse5 (not .cse2)) (.cse11 (or .cse2 .cse13)) (.cse8 (not .cse12)) (.cse4 (not .cse0)) (.cse10 (or .cse12 .cse0))) (and (let ((.cse1 (= (mod v_~a$r_buff0_thd1~0_74 256) 0)) (.cse3 (= (mod v_~a$w_buff1_used~0_349 256) 0))) (or (and (or .cse0 .cse1) (= v_~a$r_buff1_thd1~0_50 v_~a$r_buff1_thd1~0_49) (or .cse2 .cse3)) (and (or (and (not .cse1) .cse4) (and (not .cse3) .cse5)) (= v_~a$r_buff1_thd1~0_49 0)))) (or (and .cse6 (= v_~a$w_buff0_used~0_494 v_~a$w_buff0_used~0_493)) (and .cse7 .cse8 (= v_~a$w_buff0_used~0_493 0))) (or (and (= v_~a$w_buff1_used~0_349 0) (or (and .cse9 .cse5) (and .cse8 .cse4))) (and (= v_~a$w_buff1_used~0_349 v_~a$w_buff1_used~0_350) .cse10 .cse11)) (or (and .cse7 .cse8 (= |v_P0_#t~ite3#1_47| |v_P0Thread1of1ForFork1_#t~ite3#1_1|) (= v_~a~0_180 v_~a$w_buff0~0_115)) (and .cse6 (or (and (= |v_P0_#t~ite3#1_47| v_~a$w_buff1~0_128) .cse9 .cse5) (and .cse11 (= v_~a~0_181 |v_P0_#t~ite3#1_47|))) (= v_~a~0_180 |v_P0_#t~ite3#1_47|))) (or (and .cse8 .cse4 (= v_~a$r_buff0_thd1~0_74 0)) (and (= v_~a$r_buff0_thd1~0_75 v_~a$r_buff0_thd1~0_74) .cse10))))) InVars {~a~0=v_~a~0_181, ~a$w_buff1~0=v_~a$w_buff1~0_128, ~a$w_buff0~0=v_~a$w_buff0~0_115, ~a$r_buff1_thd1~0=v_~a$r_buff1_thd1~0_50, ~a$w_buff0_used~0=v_~a$w_buff0_used~0_494, ~a$r_buff0_thd1~0=v_~a$r_buff0_thd1~0_75, ~a$w_buff1_used~0=v_~a$w_buff1_used~0_350, P0Thread1of1ForFork1_#t~ite3#1=|v_P0Thread1of1ForFork1_#t~ite3#1_1|} OutVars{~a$r_buff1_thd1~0=v_~a$r_buff1_thd1~0_49, ~a$w_buff0_used~0=v_~a$w_buff0_used~0_493, P0Thread1of1ForFork1_#t~ite6#1=|v_P0Thread1of1ForFork1_#t~ite6#1_1|, ~a$r_buff0_thd1~0=v_~a$r_buff0_thd1~0_74, P0Thread1of1ForFork1_#t~ite4#1=|v_P0Thread1of1ForFork1_#t~ite4#1_1|, ~a~0=v_~a~0_180, P0Thread1of1ForFork1_#t~ite8#1=|v_P0Thread1of1ForFork1_#t~ite8#1_1|, ~a$w_buff1~0=v_~a$w_buff1~0_128, ~a$w_buff0~0=v_~a$w_buff0~0_115, P0Thread1of1ForFork1_#t~ite7#1=|v_P0Thread1of1ForFork1_#t~ite7#1_1|, ~a$w_buff1_used~0=v_~a$w_buff1_used~0_349, P0Thread1of1ForFork1_#t~ite5#1=|v_P0Thread1of1ForFork1_#t~ite5#1_1|} AuxVars[|v_P0_#t~ite3#1_47|] AssignedVars[~a~0, P0Thread1of1ForFork1_#t~ite8#1, ~a$r_buff1_thd1~0, ~a$w_buff0_used~0, P0Thread1of1ForFork1_#t~ite6#1, ~a$r_buff0_thd1~0, P0Thread1of1ForFork1_#t~ite7#1, ~a$w_buff1_used~0, P0Thread1of1ForFork1_#t~ite5#1, P0Thread1of1ForFork1_#t~ite3#1, P0Thread1of1ForFork1_#t~ite4#1][201], [278#(or (not (= 2 ~__unbuffered_p3_EAX~0)) (not (= 2 ~y~0)) (not (= 2 ~x~0)) (not (= ~__unbuffered_p3_EBX~0 0)) (not (= 2 ~z~0))), 118#L848true, 218#(or (not (= 2 ~__unbuffered_p3_EAX~0)) (not (= 2 ~y~0)) (not (= 2 ~x~0)) (not (= ~__unbuffered_p3_EBX~0 0)) (not (= 2 ~z~0))), Black: 253#(= ~__unbuffered_p3_EAX~0 0), 81#L884-1true, P0Thread1of1ForFork1InUse, P1Thread1of1ForFork3InUse, P3Thread1of1ForFork2InUse, P2Thread1of1ForFork0InUse, 39#L769true, 16#L812true, Black: 154#true, Black: 277#(= ~y~0 0), Black: 161#(and (<= 1 ~main$tmp_guard1~0) (or (not (= 2 ~__unbuffered_p3_EAX~0)) (not (= 2 ~y~0)) (not (= 2 ~x~0)) (not (= ~__unbuffered_p3_EBX~0 0)) (not (= 2 ~z~0))) (<= (div ~main$tmp_guard1~0 256) 0)), Black: 289#(and (<= 1 ~main$tmp_guard1~0) (or (not (= 2 ~__unbuffered_p3_EAX~0)) (not (= 2 ~y~0)) (not (= 2 ~x~0)) (not (= ~__unbuffered_p3_EBX~0 0)) (not (= 2 ~z~0))) (<= (div ~main$tmp_guard1~0 256) 0) (or (<= (+ |ULTIMATE.start___VERIFIER_assert_#in~expression#1| 255) 0) (<= 1 |ULTIMATE.start___VERIFIER_assert_#in~expression#1|))), Black: 157#(and (<= 1 ~main$tmp_guard1~0) (<= (div ~main$tmp_guard1~0 256) 0)), Black: 297#(and (<= 1 ~main$tmp_guard1~0) (or (<= 1 |ULTIMATE.start___VERIFIER_assert_~expression#1|) (<= (+ |ULTIMATE.start___VERIFIER_assert_~expression#1| 255) 0)) (<= (div ~main$tmp_guard1~0 256) 0) (or (<= (+ |ULTIMATE.start___VERIFIER_assert_#in~expression#1| 255) 0) (<= 1 |ULTIMATE.start___VERIFIER_assert_#in~expression#1|))), Black: 165#(and (<= 1 ~main$tmp_guard1~0) (<= (div ~main$tmp_guard1~0 256) 0) (or (<= (+ |ULTIMATE.start___VERIFIER_assert_#in~expression#1| 255) 0) (<= 1 |ULTIMATE.start___VERIFIER_assert_#in~expression#1|))), Black: 291#(and (<= 1 ~main$tmp_guard1~0) (<= (div ~main$tmp_guard1~0 256) 0) (or (<= (+ |ULTIMATE.start___VERIFIER_assert_#in~expression#1| 255) 0) (<= 1 |ULTIMATE.start___VERIFIER_assert_#in~expression#1|))), Black: 169#(and (<= 1 ~main$tmp_guard1~0) (or (<= 1 |ULTIMATE.start___VERIFIER_assert_~expression#1|) (<= (+ |ULTIMATE.start___VERIFIER_assert_~expression#1| 255) 0)) (<= (div ~main$tmp_guard1~0 256) 0) (or (<= (+ |ULTIMATE.start___VERIFIER_assert_#in~expression#1| 255) 0) (<= 1 |ULTIMATE.start___VERIFIER_assert_#in~expression#1|))), Black: 283#(and (<= 1 ~main$tmp_guard1~0) (= ~y~0 0) (<= (div ~main$tmp_guard1~0 256) 0)), Black: 163#(and (<= 1 ~main$tmp_guard1~0) (or (not (= 2 ~__unbuffered_p3_EAX~0)) (not (= 2 ~y~0)) (not (= 2 ~x~0)) (not (= ~__unbuffered_p3_EBX~0 0)) (not (= 2 ~z~0))) (<= (div ~main$tmp_guard1~0 256) 0) (or (<= (+ |ULTIMATE.start___VERIFIER_assert_#in~expression#1| 255) 0) (<= 1 |ULTIMATE.start___VERIFIER_assert_#in~expression#1|))), 182#(or (not (= 2 ~__unbuffered_p3_EAX~0)) (not (= 2 ~y~0)) (not (= 2 ~x~0)) (not (= ~__unbuffered_p3_EBX~0 0)) (not (= 2 ~z~0))), Black: 275#true, Black: 279#(and (<= 1 ~main$tmp_guard1~0) (<= (div ~main$tmp_guard1~0 256) 0)), Black: 167#(and (<= 1 ~main$tmp_guard1~0) (or (not (= 2 ~__unbuffered_p3_EAX~0)) (not (= 2 ~y~0)) (not (= 2 ~x~0)) (not (= ~__unbuffered_p3_EBX~0 0)) (not (= 2 ~z~0))) (or (<= 1 |ULTIMATE.start___VERIFIER_assert_~expression#1|) (<= (+ |ULTIMATE.start___VERIFIER_assert_~expression#1| 255) 0)) (<= (div ~main$tmp_guard1~0 256) 0) (or (<= (+ |ULTIMATE.start___VERIFIER_assert_#in~expression#1| 255) 0) (<= 1 |ULTIMATE.start___VERIFIER_assert_#in~expression#1|))), Black: 293#(and (<= 1 ~main$tmp_guard1~0) (or (<= 1 |ULTIMATE.start___VERIFIER_assert_~expression#1|) (<= (+ |ULTIMATE.start___VERIFIER_assert_~expression#1| 255) 0)) (= ~y~0 0) (<= (div ~main$tmp_guard1~0 256) 0) (or (<= (+ |ULTIMATE.start___VERIFIER_assert_#in~expression#1| 255) 0) (<= 1 |ULTIMATE.start___VERIFIER_assert_#in~expression#1|))), Black: 295#(and (<= 1 ~main$tmp_guard1~0) (or (not (= 2 ~__unbuffered_p3_EAX~0)) (not (= 2 ~y~0)) (not (= 2 ~x~0)) (not (= ~__unbuffered_p3_EBX~0 0)) (not (= 2 ~z~0))) (or (<= 1 |ULTIMATE.start___VERIFIER_assert_~expression#1|) (<= (+ |ULTIMATE.start___VERIFIER_assert_~expression#1| 255) 0)) (<= (div ~main$tmp_guard1~0 256) 0) (or (<= (+ |ULTIMATE.start___VERIFIER_assert_#in~expression#1| 255) 0) (<= 1 |ULTIMATE.start___VERIFIER_assert_#in~expression#1|))), 347#true, Black: 285#(and (<= 1 ~main$tmp_guard1~0) (or (not (= 2 ~__unbuffered_p3_EAX~0)) (not (= 2 ~y~0)) (not (= 2 ~x~0)) (not (= ~__unbuffered_p3_EBX~0 0)) (not (= 2 ~z~0))) (<= (div ~main$tmp_guard1~0 256) 0)), Black: 287#(and (<= 1 ~main$tmp_guard1~0) (= ~y~0 0) (<= (div ~main$tmp_guard1~0 256) 0) (or (<= (+ |ULTIMATE.start___VERIFIER_assert_#in~expression#1| 255) 0) (<= 1 |ULTIMATE.start___VERIFIER_assert_#in~expression#1|))), Black: 329#(and (<= 1 ~main$tmp_guard1~0) (or (<= 1 |ULTIMATE.start___VERIFIER_assert_~expression#1|) (<= (+ |ULTIMATE.start___VERIFIER_assert_~expression#1| 255) 0)) (<= (div ~main$tmp_guard1~0 256) 0) (or (<= (+ |ULTIMATE.start___VERIFIER_assert_#in~expression#1| 255) 0) (<= 1 |ULTIMATE.start___VERIFIER_assert_#in~expression#1|)) (= ~y~0 1)), Black: 179#true, Black: 319#(and (<= 1 ~main$tmp_guard1~0) (<= (div ~main$tmp_guard1~0 256) 0) (= ~y~0 1)), Black: 323#(and (<= 1 ~main$tmp_guard1~0) (<= (div ~main$tmp_guard1~0 256) 0) (or (<= (+ |ULTIMATE.start___VERIFIER_assert_#in~expression#1| 255) 0) (<= 1 |ULTIMATE.start___VERIFIER_assert_#in~expression#1|))), Black: 314#(or (not (= 2 ~__unbuffered_p3_EAX~0)) (not (= 2 ~y~0)) (not (= 2 ~x~0)) (not (= ~__unbuffered_p3_EBX~0 0)) (not (= 2 ~z~0))), Black: 181#(= ~z~0 0), Black: 315#(and (<= 1 ~main$tmp_guard1~0) (<= (div ~main$tmp_guard1~0 256) 0)), Black: 325#(and (<= 1 ~main$tmp_guard1~0) (or (not (= 2 ~__unbuffered_p3_EAX~0)) (not (= 2 ~y~0)) (not (= 2 ~x~0)) (not (= ~__unbuffered_p3_EBX~0 0)) (not (= 2 ~z~0))) (<= (div ~main$tmp_guard1~0 256) 0)), Black: 321#(and (<= 1 ~main$tmp_guard1~0) (<= (div ~main$tmp_guard1~0 256) 0) (or (<= (+ |ULTIMATE.start___VERIFIER_assert_#in~expression#1| 255) 0) (<= 1 |ULTIMATE.start___VERIFIER_assert_#in~expression#1|)) (= ~y~0 1)), Black: 331#(and (<= 1 ~main$tmp_guard1~0) (or (<= 1 |ULTIMATE.start___VERIFIER_assert_~expression#1|) (<= (+ |ULTIMATE.start___VERIFIER_assert_~expression#1| 255) 0)) (<= (div ~main$tmp_guard1~0 256) 0) (or (<= (+ |ULTIMATE.start___VERIFIER_assert_#in~expression#1| 255) 0) (<= 1 |ULTIMATE.start___VERIFIER_assert_#in~expression#1|))), Black: 327#(and (<= 1 ~main$tmp_guard1~0) (or (not (= 2 ~__unbuffered_p3_EAX~0)) (not (= 2 ~y~0)) (not (= 2 ~x~0)) (not (= ~__unbuffered_p3_EBX~0 0)) (not (= 2 ~z~0))) (<= (div ~main$tmp_guard1~0 256) 0) (or (<= (+ |ULTIMATE.start___VERIFIER_assert_#in~expression#1| 255) 0) (<= 1 |ULTIMATE.start___VERIFIER_assert_#in~expression#1|))), Black: 333#(and (<= 1 ~main$tmp_guard1~0) (or (not (= 2 ~__unbuffered_p3_EAX~0)) (not (= 2 ~y~0)) (not (= 2 ~x~0)) (not (= ~__unbuffered_p3_EBX~0 0)) (not (= 2 ~z~0))) (or (<= 1 |ULTIMATE.start___VERIFIER_assert_~expression#1|) (<= (+ |ULTIMATE.start___VERIFIER_assert_~expression#1| 255) 0)) (<= (div ~main$tmp_guard1~0 256) 0) (or (<= (+ |ULTIMATE.start___VERIFIER_assert_#in~expression#1| 255) 0) (<= 1 |ULTIMATE.start___VERIFIER_assert_#in~expression#1|))), Black: 311#true, Black: 225#(and (= ~x~0 0) (<= 1 ~main$tmp_guard1~0) (<= (div ~main$tmp_guard1~0 256) 0) (or (<= (+ |ULTIMATE.start___VERIFIER_assert_#in~expression#1| 255) 0) (<= 1 |ULTIMATE.start___VERIFIER_assert_#in~expression#1|))), 34#L792true, Black: 233#(and (= ~x~0 0) (<= 1 ~main$tmp_guard1~0) (or (<= 1 |ULTIMATE.start___VERIFIER_assert_~expression#1|) (<= (+ |ULTIMATE.start___VERIFIER_assert_~expression#1| 255) 0)) (<= (div ~main$tmp_guard1~0 256) 0) (or (<= (+ |ULTIMATE.start___VERIFIER_assert_#in~expression#1| 255) 0) (<= 1 |ULTIMATE.start___VERIFIER_assert_#in~expression#1|))), Black: 215#true, Black: 223#(and (= ~x~0 0) (<= 1 ~main$tmp_guard1~0) (<= (div ~main$tmp_guard1~0 256) 0)), Black: 217#(= ~x~0 0), 313#(= ~y~0 1)]) [2022-07-21 08:41:19,537 INFO L384 tUnfolder$Statistics]: this new event has 100 ancestors and is cut-off event [2022-07-21 08:41:19,537 INFO L387 tUnfolder$Statistics]: existing Event has 100 ancestors and is cut-off event [2022-07-21 08:41:19,537 INFO L387 tUnfolder$Statistics]: existing Event has 100 ancestors and is cut-off event [2022-07-21 08:41:19,537 INFO L387 tUnfolder$Statistics]: existing Event has 100 ancestors and is cut-off event [2022-07-21 08:41:19,619 INFO L129 PetriNetUnfolder]: 31466/54809 cut-off events. [2022-07-21 08:41:19,620 INFO L130 PetriNetUnfolder]: For 234016/320765 co-relation queries the response was YES. [2022-07-21 08:41:20,129 INFO L84 FinitePrefix]: Finished finitePrefix Result has 146162 conditions, 54809 events. 31466/54809 cut-off events. For 234016/320765 co-relation queries the response was YES. Maximal size of possible extension queue 3285. Compared 528932 event pairs, 1822 based on Foata normal form. 3034/54758 useless extension candidates. Maximal degree in co-relation 146037. Up to 17579 conditions per place. [2022-07-21 08:41:20,261 INFO L132 encePairwiseOnDemand]: 125/136 looper letters, 117 selfloop transitions, 20 changer transitions 0/271 dead transitions. [2022-07-21 08:41:20,262 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 271 transitions, 2430 flow [2022-07-21 08:41:20,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-21 08:41:20,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-07-21 08:41:20,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1197 transitions. [2022-07-21 08:41:20,264 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8801470588235294 [2022-07-21 08:41:20,264 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1197 transitions. [2022-07-21 08:41:20,264 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1197 transitions. [2022-07-21 08:41:20,265 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:41:20,265 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1197 transitions. [2022-07-21 08:41:20,267 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 119.7) internal successors, (1197), 10 states have internal predecessors, (1197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:41:20,268 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 136.0) internal successors, (1496), 11 states have internal predecessors, (1496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:41:20,269 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 136.0) internal successors, (1496), 11 states have internal predecessors, (1496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:41:20,269 INFO L186 Difference]: Start difference. First operand has 186 places, 161 transitions, 1328 flow. Second operand 10 states and 1197 transitions. [2022-07-21 08:41:20,269 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 271 transitions, 2430 flow [2022-07-21 08:41:20,364 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 271 transitions, 2354 flow, removed 38 selfloop flow, removed 10 redundant places. [2022-07-21 08:41:20,366 INFO L242 Difference]: Finished difference. Result has 182 places, 179 transitions, 1437 flow [2022-07-21 08:41:20,367 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=136, PETRI_DIFFERENCE_MINUEND_FLOW=1294, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1437, PETRI_PLACES=182, PETRI_TRANSITIONS=179} [2022-07-21 08:41:20,367 INFO L279 CegarLoopForPetriNet]: 143 programPoint places, 39 predicate places. [2022-07-21 08:41:20,368 INFO L495 AbstractCegarLoop]: Abstraction has has 182 places, 179 transitions, 1437 flow [2022-07-21 08:41:20,368 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 111.0) internal successors, (666), 6 states have internal predecessors, (666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:41:20,368 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:41:20,368 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] [2022-07-21 08:41:20,368 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-21 08:41:20,368 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)] === [2022-07-21 08:41:20,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:41:20,369 INFO L85 PathProgramCache]: Analyzing trace with hash -711753452, now seen corresponding path program 1 times [2022-07-21 08:41:20,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:41:20,369 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1398751486] [2022-07-21 08:41:20,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:41:20,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:41:20,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:41:20,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:41:20,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:41:20,445 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1398751486] [2022-07-21 08:41:20,445 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1398751486] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:41:20,446 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:41:20,446 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 08:41:20,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905863025] [2022-07-21 08:41:20,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:41:20,446 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 08:41:20,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:41:20,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 08:41:20,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-21 08:41:20,448 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 136 [2022-07-21 08:41:20,448 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 179 transitions, 1437 flow. Second operand has 7 states, 7 states have (on average 105.14285714285714) internal successors, (736), 7 states have internal predecessors, (736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:41:20,448 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:41:20,449 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 136 [2022-07-21 08:41:20,449 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:41:26,127 INFO L129 PetriNetUnfolder]: 13987/35941 cut-off events. [2022-07-21 08:41:26,127 INFO L130 PetriNetUnfolder]: For 194398/200371 co-relation queries the response was YES. [2022-07-21 08:41:26,764 INFO L84 FinitePrefix]: Finished finitePrefix Result has 128976 conditions, 35941 events. 13987/35941 cut-off events. For 194398/200371 co-relation queries the response was YES. Maximal size of possible extension queue 2522. Compared 455789 event pairs, 3363 based on Foata normal form. 757/34054 useless extension candidates. Maximal degree in co-relation 128848. Up to 6500 conditions per place. [2022-07-21 08:41:26,917 INFO L132 encePairwiseOnDemand]: 121/136 looper letters, 148 selfloop transitions, 69 changer transitions 3/323 dead transitions. [2022-07-21 08:41:26,917 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 323 transitions, 3552 flow [2022-07-21 08:41:26,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-21 08:41:26,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-07-21 08:41:26,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1473 transitions. [2022-07-21 08:41:26,920 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8331447963800905 [2022-07-21 08:41:26,920 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1473 transitions. [2022-07-21 08:41:26,921 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1473 transitions. [2022-07-21 08:41:26,921 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:41:26,921 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1473 transitions. [2022-07-21 08:41:26,923 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 113.3076923076923) internal successors, (1473), 13 states have internal predecessors, (1473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:41:26,925 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 136.0) internal successors, (1904), 14 states have internal predecessors, (1904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:41:26,926 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 136.0) internal successors, (1904), 14 states have internal predecessors, (1904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:41:26,926 INFO L186 Difference]: Start difference. First operand has 182 places, 179 transitions, 1437 flow. Second operand 13 states and 1473 transitions. [2022-07-21 08:41:26,926 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 323 transitions, 3552 flow [2022-07-21 08:41:27,399 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 323 transitions, 3486 flow, removed 32 selfloop flow, removed 3 redundant places. [2022-07-21 08:41:27,403 INFO L242 Difference]: Finished difference. Result has 203 places, 220 transitions, 2553 flow [2022-07-21 08:41:27,403 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=136, PETRI_DIFFERENCE_MINUEND_FLOW=1425, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2553, PETRI_PLACES=203, PETRI_TRANSITIONS=220} [2022-07-21 08:41:27,404 INFO L279 CegarLoopForPetriNet]: 143 programPoint places, 60 predicate places. [2022-07-21 08:41:27,404 INFO L495 AbstractCegarLoop]: Abstraction has has 203 places, 220 transitions, 2553 flow [2022-07-21 08:41:27,404 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 105.14285714285714) internal successors, (736), 7 states have internal predecessors, (736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:41:27,404 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:41:27,404 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] [2022-07-21 08:41:27,405 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-21 08:41:27,405 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-21 08:41:27,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:41:27,405 INFO L85 PathProgramCache]: Analyzing trace with hash -725123640, now seen corresponding path program 1 times [2022-07-21 08:41:27,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:41:27,406 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298771606] [2022-07-21 08:41:27,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:41:27,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:41:27,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:41:27,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:41:27,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:41:27,471 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [298771606] [2022-07-21 08:41:27,471 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [298771606] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:41:27,471 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:41:27,471 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 08:41:27,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426129450] [2022-07-21 08:41:27,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:41:27,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 08:41:27,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:41:27,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 08:41:27,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-21 08:41:27,473 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 136 [2022-07-21 08:41:27,473 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 220 transitions, 2553 flow. Second operand has 7 states, 7 states have (on average 111.0) internal successors, (777), 7 states have internal predecessors, (777), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:41:27,474 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:41:27,474 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 136 [2022-07-21 08:41:27,474 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand