./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 6c24879c Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/pthread-wmm/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-?-6c24879 [2022-07-12 10:06:19,563 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 10:06:19,574 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 10:06:19,612 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 10:06:19,613 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 10:06:19,614 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 10:06:19,615 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 10:06:19,617 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 10:06:19,618 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 10:06:19,622 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 10:06:19,623 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 10:06:19,625 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 10:06:19,625 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 10:06:19,627 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 10:06:19,627 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 10:06:19,630 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 10:06:19,631 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 10:06:19,632 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 10:06:19,633 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 10:06:19,638 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 10:06:19,640 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 10:06:19,641 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 10:06:19,641 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 10:06:19,642 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 10:06:19,643 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 10:06:19,645 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 10:06:19,645 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 10:06:19,645 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 10:06:19,646 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 10:06:19,646 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 10:06:19,647 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 10:06:19,647 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 10:06:19,648 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 10:06:19,649 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 10:06:19,649 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 10:06:19,650 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 10:06:19,650 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 10:06:19,651 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 10:06:19,651 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 10:06:19,651 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 10:06:19,652 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 10:06:19,653 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 10:06:19,654 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-12 10:06:19,677 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 10:06:19,678 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 10:06:19,678 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 10:06:19,678 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 10:06:19,679 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 10:06:19,679 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 10:06:19,679 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 10:06:19,680 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 10:06:19,680 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 10:06:19,681 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 10:06:19,681 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-12 10:06:19,681 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-12 10:06:19,681 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-12 10:06:19,681 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 10:06:19,681 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-12 10:06:19,681 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 10:06:19,682 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-12 10:06:19,682 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-12 10:06:19,682 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-12 10:06:19,682 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 10:06:19,682 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-12 10:06:19,682 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 10:06:19,683 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 10:06:19,683 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 10:06:19,683 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 10:06:19,683 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 10:06:19,683 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 10:06:19,683 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-12 10:06:19,683 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-12 10:06:19,684 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-12 10:06:19,684 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-12 10:06:19,684 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-12 10:06:19,684 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-12 10:06:19,684 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a6d0914923ba77f2cbf67d52dc6ec759519359118cb2f8fd5f254f95bf2b938e [2022-07-12 10:06:19,886 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 10:06:19,909 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 10:06:19,911 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 10:06:19,912 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 10:06:19,912 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 10:06:19,913 INFO L432 ainManager$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 [2022-07-12 10:06:19,963 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/47fbe392f/d0bc4516fe704647bbf7a2f61e7697c6/FLAG83af110bd [2022-07-12 10:06:20,345 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 10:06:20,346 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/mix030_power.oepc_pso.oepc_rmo.oepc.i [2022-07-12 10:06:20,356 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/47fbe392f/d0bc4516fe704647bbf7a2f61e7697c6/FLAG83af110bd [2022-07-12 10:06:20,366 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/47fbe392f/d0bc4516fe704647bbf7a2f61e7697c6 [2022-07-12 10:06:20,368 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 10:06:20,369 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 10:06:20,369 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 10:06:20,370 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 10:06:20,372 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 10:06:20,372 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 10:06:20" (1/1) ... [2022-07-12 10:06:20,373 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@650a3141 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:06:20, skipping insertion in model container [2022-07-12 10:06:20,373 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 10:06:20" (1/1) ... [2022-07-12 10:06:20,377 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 10:06:20,406 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 10:06:20,562 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] [2022-07-12 10:06:20,755 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 10:06:20,763 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 10:06:20,776 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] [2022-07-12 10:06:20,824 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 10:06:20,859 INFO L208 MainTranslator]: Completed translation [2022-07-12 10:06:20,859 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:06:20 WrapperNode [2022-07-12 10:06:20,860 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-12 10:06:20,860 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-12 10:06:20,861 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-12 10:06:20,861 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-12 10:06:20,866 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:06:20" (1/1) ... [2022-07-12 10:06:20,896 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:06:20" (1/1) ... [2022-07-12 10:06:20,926 INFO L137 Inliner]: procedures = 177, calls = 69, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 191 [2022-07-12 10:06:20,926 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-12 10:06:20,927 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-12 10:06:20,928 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-12 10:06:20,928 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-12 10:06:20,934 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:06:20" (1/1) ... [2022-07-12 10:06:20,934 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:06:20" (1/1) ... [2022-07-12 10:06:20,946 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:06:20" (1/1) ... [2022-07-12 10:06:20,947 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:06:20" (1/1) ... [2022-07-12 10:06:20,958 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:06:20" (1/1) ... [2022-07-12 10:06:20,969 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:06:20" (1/1) ... [2022-07-12 10:06:20,971 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:06:20" (1/1) ... [2022-07-12 10:06:20,990 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-12 10:06:20,991 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-12 10:06:20,991 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-12 10:06:20,991 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-12 10:06:20,992 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:06:20" (1/1) ... [2022-07-12 10:06:20,998 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 10:06:21,009 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:06:21,029 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-12 10:06:21,031 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-12 10:06:21,054 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-12 10:06:21,055 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-07-12 10:06:21,055 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-12 10:06:21,055 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-12 10:06:21,055 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-12 10:06:21,055 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2022-07-12 10:06:21,056 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2022-07-12 10:06:21,056 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2022-07-12 10:06:21,057 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2022-07-12 10:06:21,057 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2022-07-12 10:06:21,057 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2022-07-12 10:06:21,057 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2022-07-12 10:06:21,057 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2022-07-12 10:06:21,057 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-12 10:06:21,058 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-07-12 10:06:21,058 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-12 10:06:21,058 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-12 10:06:21,059 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-07-12 10:06:21,206 INFO L234 CfgBuilder]: Building ICFG [2022-07-12 10:06:21,208 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-12 10:06:21,561 INFO L275 CfgBuilder]: Performing block encoding [2022-07-12 10:06:21,799 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-12 10:06:21,799 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-12 10:06:21,801 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 10:06:21 BoogieIcfgContainer [2022-07-12 10:06:21,801 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-12 10:06:21,803 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-12 10:06:21,803 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-12 10:06:21,805 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-12 10:06:21,805 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.07 10:06:20" (1/3) ... [2022-07-12 10:06:21,806 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c8bc557 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 10:06:21, skipping insertion in model container [2022-07-12 10:06:21,806 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:06:20" (2/3) ... [2022-07-12 10:06:21,806 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c8bc557 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 10:06:21, skipping insertion in model container [2022-07-12 10:06:21,806 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 10:06:21" (3/3) ... [2022-07-12 10:06:21,807 INFO L111 eAbstractionObserver]: Analyzing ICFG mix030_power.oepc_pso.oepc_rmo.oepc.i [2022-07-12 10:06:21,811 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-12 10:06:21,817 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-12 10:06:21,818 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-12 10:06:21,818 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-12 10:06:21,874 INFO L135 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-07-12 10:06:21,911 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 147 places, 136 transitions, 292 flow [2022-07-12 10:06:21,954 INFO L129 PetriNetUnfolder]: 2/132 cut-off events. [2022-07-12 10:06:21,955 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-07-12 10:06:21,958 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. [2022-07-12 10:06:21,958 INFO L82 GeneralOperation]: Start removeDead. Operand has 147 places, 136 transitions, 292 flow [2022-07-12 10:06:21,964 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 143 places, 132 transitions, 276 flow [2022-07-12 10:06:21,975 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 10:06:21,981 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@157939a1, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@6c787f [2022-07-12 10:06:21,982 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2022-07-12 10:06:21,992 INFO L129 PetriNetUnfolder]: 0/48 cut-off events. [2022-07-12 10:06:21,993 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-07-12 10:06:21,993 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:06:21,994 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] [2022-07-12 10:06:21,994 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P0Err0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-12 10:06:21,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:06:21,998 INFO L85 PathProgramCache]: Analyzing trace with hash 241967491, now seen corresponding path program 1 times [2022-07-12 10:06:22,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:06:22,004 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1660078786] [2022-07-12 10:06:22,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:06:22,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:06:22,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:06:22,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:06:22,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:06:22,250 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1660078786] [2022-07-12 10:06:22,250 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1660078786] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:06:22,251 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:06:22,251 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-12 10:06:22,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584462482] [2022-07-12 10:06:22,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:06:22,258 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 10:06:22,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:06:22,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 10:06:22,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 10:06:22,287 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 136 [2022-07-12 10:06:22,292 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) [2022-07-12 10:06:22,292 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:06:22,293 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 136 [2022-07-12 10:06:22,294 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:06:22,488 INFO L129 PetriNetUnfolder]: 162/546 cut-off events. [2022-07-12 10:06:22,489 INFO L130 PetriNetUnfolder]: For 22/22 co-relation queries the response was YES. [2022-07-12 10:06:22,494 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. [2022-07-12 10:06:22,499 INFO L132 encePairwiseOnDemand]: 131/136 looper letters, 18 selfloop transitions, 2 changer transitions 0/136 dead transitions. [2022-07-12 10:06:22,499 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 136 transitions, 333 flow [2022-07-12 10:06:22,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 10:06:22,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-12 10:06:22,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 385 transitions. [2022-07-12 10:06:22,514 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9436274509803921 [2022-07-12 10:06:22,515 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 385 transitions. [2022-07-12 10:06:22,515 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 385 transitions. [2022-07-12 10:06:22,518 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:06:22,520 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 385 transitions. [2022-07-12 10:06:22,524 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) [2022-07-12 10:06:22,530 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) [2022-07-12 10:06:22,530 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) [2022-07-12 10:06:22,532 INFO L186 Difference]: Start difference. First operand has 143 places, 132 transitions, 276 flow. Second operand 3 states and 385 transitions. [2022-07-12 10:06:22,532 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 136 transitions, 333 flow [2022-07-12 10:06:22,535 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 136 transitions, 326 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-07-12 10:06:22,538 INFO L242 Difference]: Finished difference. Result has 139 places, 128 transitions, 268 flow [2022-07-12 10:06:22,540 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} [2022-07-12 10:06:22,542 INFO L279 CegarLoopForPetriNet]: 143 programPoint places, -4 predicate places. [2022-07-12 10:06:22,543 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 128 transitions, 268 flow [2022-07-12 10:06:22,543 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) [2022-07-12 10:06:22,543 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:06:22,543 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] [2022-07-12 10:06:22,544 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-12 10:06:22,544 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-12 10:06:22,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:06:22,545 INFO L85 PathProgramCache]: Analyzing trace with hash -619394308, now seen corresponding path program 1 times [2022-07-12 10:06:22,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:06:22,545 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47929406] [2022-07-12 10:06:22,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:06:22,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:06:22,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:06:22,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:06:22,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:06:22,813 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [47929406] [2022-07-12 10:06:22,814 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [47929406] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:06:22,815 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:06:22,816 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 10:06:22,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92439323] [2022-07-12 10:06:22,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:06:22,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 10:06:22,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:06:22,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 10:06:22,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-12 10:06:22,820 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 136 [2022-07-12 10:06:22,824 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) [2022-07-12 10:06:22,825 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:06:22,825 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 136 [2022-07-12 10:06:22,825 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:06:27,114 INFO L129 PetriNetUnfolder]: 21069/43826 cut-off events. [2022-07-12 10:06:27,115 INFO L130 PetriNetUnfolder]: For 1735/1735 co-relation queries the response was YES. [2022-07-12 10:06:27,277 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. [2022-07-12 10:06:27,388 INFO L132 encePairwiseOnDemand]: 121/136 looper letters, 38 selfloop transitions, 11 changer transitions 102/236 dead transitions. [2022-07-12 10:06:27,388 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 236 transitions, 778 flow [2022-07-12 10:06:27,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-12 10:06:27,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-07-12 10:06:27,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1058 transitions. [2022-07-12 10:06:27,391 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8643790849673203 [2022-07-12 10:06:27,391 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1058 transitions. [2022-07-12 10:06:27,391 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1058 transitions. [2022-07-12 10:06:27,392 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:06:27,392 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1058 transitions. [2022-07-12 10:06:27,393 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) [2022-07-12 10:06:27,395 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) [2022-07-12 10:06:27,396 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) [2022-07-12 10:06:27,396 INFO L186 Difference]: Start difference. First operand has 139 places, 128 transitions, 268 flow. Second operand 9 states and 1058 transitions. [2022-07-12 10:06:27,396 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 236 transitions, 778 flow [2022-07-12 10:06:27,398 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 236 transitions, 760 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-07-12 10:06:27,400 INFO L242 Difference]: Finished difference. Result has 153 places, 122 transitions, 374 flow [2022-07-12 10:06:27,401 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} [2022-07-12 10:06:27,401 INFO L279 CegarLoopForPetriNet]: 143 programPoint places, 10 predicate places. [2022-07-12 10:06:27,402 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 122 transitions, 374 flow [2022-07-12 10:06:27,402 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) [2022-07-12 10:06:27,402 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:06:27,403 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:06:27,403 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-12 10:06:27,403 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-12 10:06:27,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:06:27,404 INFO L85 PathProgramCache]: Analyzing trace with hash -61313541, now seen corresponding path program 1 times [2022-07-12 10:06:27,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:06:27,404 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068512278] [2022-07-12 10:06:27,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:06:27,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:06:27,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:06:27,500 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:06:27,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:06:27,500 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068512278] [2022-07-12 10:06:27,500 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2068512278] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:06:27,501 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:06:27,501 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 10:06:27,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263323035] [2022-07-12 10:06:27,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:06:27,501 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 10:06:27,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:06:27,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 10:06:27,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-12 10:06:27,503 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 136 [2022-07-12 10:06:27,503 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) [2022-07-12 10:06:27,504 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:06:27,504 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 136 [2022-07-12 10:06:27,504 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:06:30,518 INFO L129 PetriNetUnfolder]: 16182/26980 cut-off events. [2022-07-12 10:06:30,518 INFO L130 PetriNetUnfolder]: For 49365/49365 co-relation queries the response was YES. [2022-07-12 10:06:30,613 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. [2022-07-12 10:06:30,700 INFO L132 encePairwiseOnDemand]: 120/136 looper letters, 49 selfloop transitions, 16 changer transitions 133/283 dead transitions. [2022-07-12 10:06:30,701 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 283 transitions, 1710 flow [2022-07-12 10:06:30,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-12 10:06:30,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-07-12 10:06:30,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1503 transitions. [2022-07-12 10:06:30,713 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8501131221719457 [2022-07-12 10:06:30,713 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1503 transitions. [2022-07-12 10:06:30,714 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1503 transitions. [2022-07-12 10:06:30,716 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:06:30,716 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1503 transitions. [2022-07-12 10:06:30,720 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) [2022-07-12 10:06:30,723 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) [2022-07-12 10:06:30,724 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) [2022-07-12 10:06:30,724 INFO L186 Difference]: Start difference. First operand has 153 places, 122 transitions, 374 flow. Second operand 13 states and 1503 transitions. [2022-07-12 10:06:30,724 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 283 transitions, 1710 flow [2022-07-12 10:06:30,761 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 283 transitions, 1592 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-07-12 10:06:30,763 INFO L242 Difference]: Finished difference. Result has 155 places, 130 transitions, 528 flow [2022-07-12 10:06:30,763 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} [2022-07-12 10:06:30,766 INFO L279 CegarLoopForPetriNet]: 143 programPoint places, 12 predicate places. [2022-07-12 10:06:30,767 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 130 transitions, 528 flow [2022-07-12 10:06:30,768 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) [2022-07-12 10:06:30,768 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:06:30,768 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:06:30,768 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-12 10:06:30,768 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-12 10:06:30,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:06:30,769 INFO L85 PathProgramCache]: Analyzing trace with hash 334177501, now seen corresponding path program 1 times [2022-07-12 10:06:30,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:06:30,769 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [164176888] [2022-07-12 10:06:30,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:06:30,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:06:30,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:06:30,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:06:30,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:06:30,889 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [164176888] [2022-07-12 10:06:30,889 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [164176888] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:06:30,889 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:06:30,889 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 10:06:30,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848556915] [2022-07-12 10:06:30,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:06:30,890 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 10:06:30,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:06:30,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 10:06:30,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-12 10:06:30,891 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 136 [2022-07-12 10:06:30,892 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) [2022-07-12 10:06:30,892 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:06:30,892 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 136 [2022-07-12 10:06:30,892 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:06:33,639 INFO L129 PetriNetUnfolder]: 14142/22995 cut-off events. [2022-07-12 10:06:33,639 INFO L130 PetriNetUnfolder]: For 92410/92410 co-relation queries the response was YES. [2022-07-12 10:06:33,747 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. [2022-07-12 10:06:33,829 INFO L132 encePairwiseOnDemand]: 121/136 looper letters, 58 selfloop transitions, 23 changer transitions 121/287 dead transitions. [2022-07-12 10:06:33,829 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 287 transitions, 2008 flow [2022-07-12 10:06:33,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-12 10:06:33,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-07-12 10:06:33,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1501 transitions. [2022-07-12 10:06:33,833 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8489819004524887 [2022-07-12 10:06:33,833 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1501 transitions. [2022-07-12 10:06:33,834 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1501 transitions. [2022-07-12 10:06:33,834 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:06:33,834 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1501 transitions. [2022-07-12 10:06:33,837 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) [2022-07-12 10:06:34,033 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) [2022-07-12 10:06:34,034 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) [2022-07-12 10:06:34,034 INFO L186 Difference]: Start difference. First operand has 155 places, 130 transitions, 528 flow. Second operand 13 states and 1501 transitions. [2022-07-12 10:06:34,034 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 287 transitions, 2008 flow [2022-07-12 10:06:34,291 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 287 transitions, 1960 flow, removed 24 selfloop flow, removed 0 redundant places. [2022-07-12 10:06:34,294 INFO L242 Difference]: Finished difference. Result has 170 places, 143 transitions, 796 flow [2022-07-12 10:06:34,294 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} [2022-07-12 10:06:34,295 INFO L279 CegarLoopForPetriNet]: 143 programPoint places, 27 predicate places. [2022-07-12 10:06:34,295 INFO L495 AbstractCegarLoop]: Abstraction has has 170 places, 143 transitions, 796 flow [2022-07-12 10:06:34,296 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) [2022-07-12 10:06:34,296 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:06:34,296 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:06:34,296 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-12 10:06:34,296 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-12 10:06:34,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:06:34,297 INFO L85 PathProgramCache]: Analyzing trace with hash -1640757958, now seen corresponding path program 1 times [2022-07-12 10:06:34,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:06:34,297 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168880654] [2022-07-12 10:06:34,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:06:34,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:06:34,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:06:34,374 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:06:34,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:06:34,374 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168880654] [2022-07-12 10:06:34,374 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1168880654] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:06:34,374 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:06:34,375 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 10:06:34,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738166665] [2022-07-12 10:06:34,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:06:34,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 10:06:34,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:06:34,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 10:06:34,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-12 10:06:34,376 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 136 [2022-07-12 10:06:34,376 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) [2022-07-12 10:06:34,376 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:06:34,376 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 136 [2022-07-12 10:06:34,377 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:06:36,586 INFO L129 PetriNetUnfolder]: 8512/15207 cut-off events. [2022-07-12 10:06:36,586 INFO L130 PetriNetUnfolder]: For 82362/86903 co-relation queries the response was YES. [2022-07-12 10:06:36,699 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. [2022-07-12 10:06:36,758 INFO L132 encePairwiseOnDemand]: 130/136 looper letters, 24 selfloop transitions, 4 changer transitions 46/194 dead transitions. [2022-07-12 10:06:36,758 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 194 transitions, 1208 flow [2022-07-12 10:06:36,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-12 10:06:36,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-07-12 10:06:36,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1074 transitions. [2022-07-12 10:06:36,761 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8774509803921569 [2022-07-12 10:06:36,761 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1074 transitions. [2022-07-12 10:06:36,761 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1074 transitions. [2022-07-12 10:06:36,761 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:06:36,762 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1074 transitions. [2022-07-12 10:06:36,763 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) [2022-07-12 10:06:36,765 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) [2022-07-12 10:06:36,765 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) [2022-07-12 10:06:36,765 INFO L186 Difference]: Start difference. First operand has 170 places, 143 transitions, 796 flow. Second operand 9 states and 1074 transitions. [2022-07-12 10:06:36,766 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 194 transitions, 1208 flow [2022-07-12 10:06:37,331 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 194 transitions, 1128 flow, removed 40 selfloop flow, removed 6 redundant places. [2022-07-12 10:06:37,333 INFO L242 Difference]: Finished difference. Result has 170 places, 143 transitions, 758 flow [2022-07-12 10:06:37,333 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} [2022-07-12 10:06:37,334 INFO L279 CegarLoopForPetriNet]: 143 programPoint places, 27 predicate places. [2022-07-12 10:06:37,334 INFO L495 AbstractCegarLoop]: Abstraction has has 170 places, 143 transitions, 758 flow [2022-07-12 10:06:37,334 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 114.0) internal successors, (684), 6 states have internal predecessors, (684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:06:37,335 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:06:37,335 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:06:37,335 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-12 10:06:37,335 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-12 10:06:37,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:06:37,335 INFO L85 PathProgramCache]: Analyzing trace with hash -1479970143, now seen corresponding path program 1 times [2022-07-12 10:06:37,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:06:37,336 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2093288781] [2022-07-12 10:06:37,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:06:37,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:06:37,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:06:37,407 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:06:37,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:06:37,407 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2093288781] [2022-07-12 10:06:37,408 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2093288781] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:06:37,408 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:06:37,408 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 10:06:37,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971202027] [2022-07-12 10:06:37,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:06:37,409 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 10:06:37,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:06:37,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 10:06:37,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-12 10:06:37,410 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 136 [2022-07-12 10:06:37,411 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) [2022-07-12 10:06:37,411 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:06:37,411 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 136 [2022-07-12 10:06:37,411 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:06:39,584 INFO L129 PetriNetUnfolder]: 9563/16706 cut-off events. [2022-07-12 10:06:39,584 INFO L130 PetriNetUnfolder]: For 101728/101728 co-relation queries the response was YES. [2022-07-12 10:06:39,724 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. [2022-07-12 10:06:39,780 INFO L132 encePairwiseOnDemand]: 120/136 looper letters, 62 selfloop transitions, 33 changer transitions 109/289 dead transitions. [2022-07-12 10:06:39,780 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 289 transitions, 2412 flow [2022-07-12 10:06:39,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-12 10:06:39,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-07-12 10:06:39,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1490 transitions. [2022-07-12 10:06:39,783 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8427601809954751 [2022-07-12 10:06:39,783 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1490 transitions. [2022-07-12 10:06:39,783 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1490 transitions. [2022-07-12 10:06:39,784 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:06:39,784 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1490 transitions. [2022-07-12 10:06:39,786 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) [2022-07-12 10:06:39,788 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) [2022-07-12 10:06:39,789 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) [2022-07-12 10:06:39,789 INFO L186 Difference]: Start difference. First operand has 170 places, 143 transitions, 758 flow. Second operand 13 states and 1490 transitions. [2022-07-12 10:06:39,789 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 289 transitions, 2412 flow [2022-07-12 10:06:40,033 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 289 transitions, 2320 flow, removed 40 selfloop flow, removed 15 redundant places. [2022-07-12 10:06:40,036 INFO L242 Difference]: Finished difference. Result has 173 places, 157 transitions, 1073 flow [2022-07-12 10:06:40,037 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} [2022-07-12 10:06:40,037 INFO L279 CegarLoopForPetriNet]: 143 programPoint places, 30 predicate places. [2022-07-12 10:06:40,037 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 157 transitions, 1073 flow [2022-07-12 10:06:40,038 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) [2022-07-12 10:06:40,038 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:06:40,038 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] [2022-07-12 10:06:40,038 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-12 10:06:40,038 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-12 10:06:40,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:06:40,038 INFO L85 PathProgramCache]: Analyzing trace with hash 869168544, now seen corresponding path program 1 times [2022-07-12 10:06:40,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:06:40,038 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [594050364] [2022-07-12 10:06:40,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:06:40,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:06:40,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:06:40,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:06:40,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:06:40,142 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [594050364] [2022-07-12 10:06:40,142 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [594050364] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:06:40,142 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:06:40,142 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 10:06:40,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817834983] [2022-07-12 10:06:40,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:06:40,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 10:06:40,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:06:40,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 10:06:40,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-12 10:06:40,146 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 136 [2022-07-12 10:06:40,146 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) [2022-07-12 10:06:40,146 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:06:40,146 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 136 [2022-07-12 10:06:40,147 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:06:42,751 INFO L129 PetriNetUnfolder]: 11015/18803 cut-off events. [2022-07-12 10:06:42,752 INFO L130 PetriNetUnfolder]: For 147951/147951 co-relation queries the response was YES. [2022-07-12 10:06:42,920 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. [2022-07-12 10:06:42,994 INFO L132 encePairwiseOnDemand]: 121/136 looper letters, 62 selfloop transitions, 42 changer transitions 100/289 dead transitions. [2022-07-12 10:06:42,995 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 289 transitions, 2641 flow [2022-07-12 10:06:42,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-12 10:06:42,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-07-12 10:06:42,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1481 transitions. [2022-07-12 10:06:42,998 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8376696832579186 [2022-07-12 10:06:42,998 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1481 transitions. [2022-07-12 10:06:42,998 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1481 transitions. [2022-07-12 10:06:42,999 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:06:42,999 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1481 transitions. [2022-07-12 10:06:43,001 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) [2022-07-12 10:06:43,003 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) [2022-07-12 10:06:43,004 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) [2022-07-12 10:06:43,004 INFO L186 Difference]: Start difference. First operand has 173 places, 157 transitions, 1073 flow. Second operand 13 states and 1481 transitions. [2022-07-12 10:06:43,004 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 289 transitions, 2641 flow [2022-07-12 10:06:43,568 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 289 transitions, 2511 flow, removed 65 selfloop flow, removed 2 redundant places. [2022-07-12 10:06:43,571 INFO L242 Difference]: Finished difference. Result has 186 places, 161 transitions, 1328 flow [2022-07-12 10:06:43,571 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} [2022-07-12 10:06:43,572 INFO L279 CegarLoopForPetriNet]: 143 programPoint places, 43 predicate places. [2022-07-12 10:06:43,572 INFO L495 AbstractCegarLoop]: Abstraction has has 186 places, 161 transitions, 1328 flow [2022-07-12 10:06:43,572 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) [2022-07-12 10:06:43,572 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:06:43,573 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] [2022-07-12 10:06:43,573 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-12 10:06:43,573 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-12 10:06:43,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:06:43,573 INFO L85 PathProgramCache]: Analyzing trace with hash -262640256, now seen corresponding path program 1 times [2022-07-12 10:06:43,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:06:43,574 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [711960807] [2022-07-12 10:06:43,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:06:43,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:06:43,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:06:43,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:06:43,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:06:43,639 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [711960807] [2022-07-12 10:06:43,639 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [711960807] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:06:43,639 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:06:43,639 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 10:06:43,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284430928] [2022-07-12 10:06:43,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:06:43,640 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 10:06:43,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:06:43,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 10:06:43,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-12 10:06:43,641 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 136 [2022-07-12 10:06:43,642 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) [2022-07-12 10:06:43,642 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:06:43,642 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 136 [2022-07-12 10:06:43,642 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:06:51,236 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$tmp_guard1~0 256) 0)), Black: 217#(= ~x~0 0), 313#(= ~y~0 1)]) [2022-07-12 10:06:51,236 INFO L384 tUnfolder$Statistics]: this new event has 100 ancestors and is cut-off event [2022-07-12 10:06:51,236 INFO L387 tUnfolder$Statistics]: existing Event has 100 ancestors and is cut-off event [2022-07-12 10:06:51,237 INFO L387 tUnfolder$Statistics]: existing Event has 100 ancestors and is cut-off event [2022-07-12 10:06:51,237 INFO L387 tUnfolder$Statistics]: existing Event has 100 ancestors and is cut-off event [2022-07-12 10:06:51,310 INFO L129 PetriNetUnfolder]: 31466/54809 cut-off events. [2022-07-12 10:06:51,310 INFO L130 PetriNetUnfolder]: For 234016/320765 co-relation queries the response was YES. [2022-07-12 10:06:51,912 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. [2022-07-12 10:06:52,179 INFO L132 encePairwiseOnDemand]: 125/136 looper letters, 117 selfloop transitions, 20 changer transitions 0/271 dead transitions. [2022-07-12 10:06:52,180 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 271 transitions, 2430 flow [2022-07-12 10:06:52,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-12 10:06:52,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-07-12 10:06:52,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1197 transitions. [2022-07-12 10:06:52,183 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8801470588235294 [2022-07-12 10:06:52,183 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1197 transitions. [2022-07-12 10:06:52,183 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1197 transitions. [2022-07-12 10:06:52,184 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:06:52,184 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1197 transitions. [2022-07-12 10:06:52,186 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) [2022-07-12 10:06:52,187 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) [2022-07-12 10:06:52,188 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) [2022-07-12 10:06:52,188 INFO L186 Difference]: Start difference. First operand has 186 places, 161 transitions, 1328 flow. Second operand 10 states and 1197 transitions. [2022-07-12 10:06:52,188 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 271 transitions, 2430 flow [2022-07-12 10:06:52,310 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 271 transitions, 2354 flow, removed 38 selfloop flow, removed 10 redundant places. [2022-07-12 10:06:52,313 INFO L242 Difference]: Finished difference. Result has 182 places, 179 transitions, 1437 flow [2022-07-12 10:06:52,313 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} [2022-07-12 10:06:52,314 INFO L279 CegarLoopForPetriNet]: 143 programPoint places, 39 predicate places. [2022-07-12 10:06:52,314 INFO L495 AbstractCegarLoop]: Abstraction has has 182 places, 179 transitions, 1437 flow [2022-07-12 10:06:52,315 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) [2022-07-12 10:06:52,315 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:06:52,315 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:06:52,315 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-12 10:06:52,315 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-12 10:06:52,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:06:52,315 INFO L85 PathProgramCache]: Analyzing trace with hash -711753452, now seen corresponding path program 1 times [2022-07-12 10:06:52,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:06:52,316 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [807915362] [2022-07-12 10:06:52,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:06:52,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:06:52,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:06:52,403 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:06:52,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:06:52,403 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [807915362] [2022-07-12 10:06:52,404 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [807915362] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:06:52,404 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:06:52,404 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 10:06:52,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166612485] [2022-07-12 10:06:52,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:06:52,405 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 10:06:52,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:06:52,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 10:06:52,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-12 10:06:52,406 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 136 [2022-07-12 10:06:52,406 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) [2022-07-12 10:06:52,406 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:06:52,407 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 136 [2022-07-12 10:06:52,407 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:06:57,248 INFO L129 PetriNetUnfolder]: 13987/35941 cut-off events. [2022-07-12 10:06:57,248 INFO L130 PetriNetUnfolder]: For 194398/200371 co-relation queries the response was YES. [2022-07-12 10:06:57,616 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. [2022-07-12 10:06:57,905 INFO L132 encePairwiseOnDemand]: 121/136 looper letters, 148 selfloop transitions, 69 changer transitions 3/323 dead transitions. [2022-07-12 10:06:57,905 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 323 transitions, 3552 flow [2022-07-12 10:06:57,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-12 10:06:57,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-07-12 10:06:57,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1473 transitions. [2022-07-12 10:06:57,909 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8331447963800905 [2022-07-12 10:06:57,909 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1473 transitions. [2022-07-12 10:06:57,909 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1473 transitions. [2022-07-12 10:06:57,910 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:06:57,910 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1473 transitions. [2022-07-12 10:06:57,912 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) [2022-07-12 10:06:57,914 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) [2022-07-12 10:06:57,914 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) [2022-07-12 10:06:57,914 INFO L186 Difference]: Start difference. First operand has 182 places, 179 transitions, 1437 flow. Second operand 13 states and 1473 transitions. [2022-07-12 10:06:57,915 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 323 transitions, 3552 flow [2022-07-12 10:06:58,498 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 323 transitions, 3486 flow, removed 32 selfloop flow, removed 3 redundant places. [2022-07-12 10:06:58,501 INFO L242 Difference]: Finished difference. Result has 203 places, 220 transitions, 2553 flow [2022-07-12 10:06:58,502 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} [2022-07-12 10:06:58,503 INFO L279 CegarLoopForPetriNet]: 143 programPoint places, 60 predicate places. [2022-07-12 10:06:58,503 INFO L495 AbstractCegarLoop]: Abstraction has has 203 places, 220 transitions, 2553 flow [2022-07-12 10:06:58,504 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) [2022-07-12 10:06:58,504 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:06:58,504 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:06:58,504 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-12 10:06:58,504 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)] === [2022-07-12 10:06:58,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:06:58,505 INFO L85 PathProgramCache]: Analyzing trace with hash -725123640, now seen corresponding path program 1 times [2022-07-12 10:06:58,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:06:58,505 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893080319] [2022-07-12 10:06:58,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:06:58,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:06:58,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:06:58,588 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:06:58,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:06:58,588 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1893080319] [2022-07-12 10:06:58,591 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1893080319] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:06:58,592 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:06:58,592 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 10:06:58,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378523838] [2022-07-12 10:06:58,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:06:58,593 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 10:06:58,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:06:58,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 10:06:58,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-12 10:06:58,595 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 136 [2022-07-12 10:06:58,596 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) [2022-07-12 10:06:58,596 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:06:58,596 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 136 [2022-07-12 10:06:58,597 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand