./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 eb692b52 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-?-eb692b5 [2022-07-19 21:07:55,854 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-19 21:07:55,855 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-19 21:07:55,891 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-19 21:07:55,891 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-19 21:07:55,892 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-19 21:07:55,894 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-19 21:07:55,899 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-19 21:07:55,901 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-19 21:07:55,905 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-19 21:07:55,906 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-19 21:07:55,908 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-19 21:07:55,909 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-19 21:07:55,911 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-19 21:07:55,913 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-19 21:07:55,916 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-19 21:07:55,917 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-19 21:07:55,919 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-19 21:07:55,920 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-19 21:07:55,926 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-19 21:07:55,928 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-19 21:07:55,929 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-19 21:07:55,929 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-19 21:07:55,930 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-19 21:07:55,932 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-19 21:07:55,940 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-19 21:07:55,941 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-19 21:07:55,942 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-19 21:07:55,943 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-19 21:07:55,943 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-19 21:07:55,944 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-19 21:07:55,945 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-19 21:07:55,947 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-19 21:07:55,947 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-19 21:07:55,948 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-19 21:07:55,949 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-19 21:07:55,949 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-19 21:07:55,949 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-19 21:07:55,950 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-19 21:07:55,950 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-19 21:07:55,950 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-19 21:07:55,952 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-19 21:07:55,953 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-19 21:07:55,990 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-19 21:07:55,991 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-19 21:07:55,991 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-19 21:07:55,991 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-19 21:07:55,992 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-19 21:07:55,992 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-19 21:07:55,992 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-19 21:07:55,992 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-19 21:07:55,993 INFO L138 SettingsManager]: * Use SBE=true [2022-07-19 21:07:55,993 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-19 21:07:55,994 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-19 21:07:55,994 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-19 21:07:55,994 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-19 21:07:55,994 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-19 21:07:55,994 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-19 21:07:55,994 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-19 21:07:55,994 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-19 21:07:55,995 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-19 21:07:55,995 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-19 21:07:55,995 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-19 21:07:55,995 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-19 21:07:55,995 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-19 21:07:55,995 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-19 21:07:55,996 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-19 21:07:55,996 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 21:07:55,996 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-19 21:07:55,996 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-19 21:07:55,996 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-19 21:07:55,996 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-19 21:07:55,996 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-19 21:07:55,997 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-19 21:07:55,997 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-19 21:07:55,997 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-19 21:07:55,997 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a6d0914923ba77f2cbf67d52dc6ec759519359118cb2f8fd5f254f95bf2b938e [2022-07-19 21:07:56,257 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-19 21:07:56,274 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-19 21:07:56,277 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-19 21:07:56,278 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-19 21:07:56,278 INFO L275 PluginConnector]: CDTParser initialized [2022-07-19 21:07:56,279 INFO L432 ainManager$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 [2022-07-19 21:07:56,359 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2631aa42b/1256964615f44dfa8b0e8b10c4287ccf/FLAGfc96782ef [2022-07-19 21:07:56,809 INFO L306 CDTParser]: Found 1 translation units. [2022-07-19 21:07:56,810 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/mix030_power.oepc_pso.oepc_rmo.oepc.i [2022-07-19 21:07:56,828 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2631aa42b/1256964615f44dfa8b0e8b10c4287ccf/FLAGfc96782ef [2022-07-19 21:07:57,311 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2631aa42b/1256964615f44dfa8b0e8b10c4287ccf [2022-07-19 21:07:57,313 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-19 21:07:57,313 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-19 21:07:57,315 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-19 21:07:57,315 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-19 21:07:57,317 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-19 21:07:57,317 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 09:07:57" (1/1) ... [2022-07-19 21:07:57,318 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@35b754e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:07:57, skipping insertion in model container [2022-07-19 21:07:57,319 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 09:07:57" (1/1) ... [2022-07-19 21:07:57,324 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-19 21:07:57,359 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-19 21:07:57,521 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] [2022-07-19 21:07:57,705 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 21:07:57,718 INFO L203 MainTranslator]: Completed pre-run [2022-07-19 21:07:57,727 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] [2022-07-19 21:07:57,766 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 21:07:57,800 INFO L208 MainTranslator]: Completed translation [2022-07-19 21:07:57,800 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:07:57 WrapperNode [2022-07-19 21:07:57,801 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-19 21:07:57,802 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-19 21:07:57,802 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-19 21:07:57,802 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-19 21:07:57,809 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:07:57" (1/1) ... [2022-07-19 21:07:57,841 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:07:57" (1/1) ... [2022-07-19 21:07:57,875 INFO L137 Inliner]: procedures = 177, calls = 69, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 191 [2022-07-19 21:07:57,876 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-19 21:07:57,877 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-19 21:07:57,877 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-19 21:07:57,877 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-19 21:07:57,890 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:07:57" (1/1) ... [2022-07-19 21:07:57,890 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:07:57" (1/1) ... [2022-07-19 21:07:57,897 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:07:57" (1/1) ... [2022-07-19 21:07:57,898 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:07:57" (1/1) ... [2022-07-19 21:07:57,917 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:07:57" (1/1) ... [2022-07-19 21:07:57,931 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:07:57" (1/1) ... [2022-07-19 21:07:57,934 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:07:57" (1/1) ... [2022-07-19 21:07:57,950 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-19 21:07:57,951 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-19 21:07:57,951 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-19 21:07:57,951 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-19 21:07:57,952 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:07:57" (1/1) ... [2022-07-19 21:07:57,967 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 21:07:57,979 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 21:07:57,993 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) [2022-07-19 21:07:58,012 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 [2022-07-19 21:07:58,041 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-19 21:07:58,041 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-07-19 21:07:58,042 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-19 21:07:58,042 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-19 21:07:58,042 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-19 21:07:58,042 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2022-07-19 21:07:58,042 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2022-07-19 21:07:58,042 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2022-07-19 21:07:58,042 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2022-07-19 21:07:58,042 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2022-07-19 21:07:58,042 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2022-07-19 21:07:58,043 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2022-07-19 21:07:58,043 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2022-07-19 21:07:58,043 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-19 21:07:58,043 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-07-19 21:07:58,043 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-19 21:07:58,043 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-19 21:07:58,045 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-07-19 21:07:58,232 INFO L234 CfgBuilder]: Building ICFG [2022-07-19 21:07:58,233 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-19 21:07:58,692 INFO L275 CfgBuilder]: Performing block encoding [2022-07-19 21:07:59,142 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-19 21:07:59,143 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-19 21:07:59,146 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 09:07:59 BoogieIcfgContainer [2022-07-19 21:07:59,146 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-19 21:07:59,148 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-19 21:07:59,148 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-19 21:07:59,151 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-19 21:07:59,152 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 09:07:57" (1/3) ... [2022-07-19 21:07:59,152 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f399ac3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 09:07:59, skipping insertion in model container [2022-07-19 21:07:59,152 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:07:57" (2/3) ... [2022-07-19 21:07:59,153 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f399ac3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 09:07:59, skipping insertion in model container [2022-07-19 21:07:59,153 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 09:07:59" (3/3) ... [2022-07-19 21:07:59,154 INFO L111 eAbstractionObserver]: Analyzing ICFG mix030_power.oepc_pso.oepc_rmo.oepc.i [2022-07-19 21:07:59,159 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-19 21:07:59,167 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-19 21:07:59,168 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-19 21:07:59,168 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-19 21:07:59,239 INFO L135 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-07-19 21:07:59,286 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 147 places, 136 transitions, 292 flow [2022-07-19 21:07:59,353 INFO L129 PetriNetUnfolder]: 2/132 cut-off events. [2022-07-19 21:07:59,353 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-07-19 21:07:59,358 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. [2022-07-19 21:07:59,359 INFO L82 GeneralOperation]: Start removeDead. Operand has 147 places, 136 transitions, 292 flow [2022-07-19 21:07:59,366 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 143 places, 132 transitions, 276 flow [2022-07-19 21:07:59,380 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 21:07:59,387 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@1e3d460e, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@2d879cb9 [2022-07-19 21:07:59,388 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2022-07-19 21:07:59,408 INFO L129 PetriNetUnfolder]: 0/48 cut-off events. [2022-07-19 21:07:59,409 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-07-19 21:07:59,424 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:07:59,425 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] [2022-07-19 21:07:59,426 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P0Err0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-19 21:07:59,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:07:59,431 INFO L85 PathProgramCache]: Analyzing trace with hash 241967491, now seen corresponding path program 1 times [2022-07-19 21:07:59,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:07:59,439 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557678462] [2022-07-19 21:07:59,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:07:59,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:07:59,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:07:59,709 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:07:59,710 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:07:59,710 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1557678462] [2022-07-19 21:07:59,711 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1557678462] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:07:59,711 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:07:59,711 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-19 21:07:59,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300154617] [2022-07-19 21:07:59,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:07:59,722 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 21:07:59,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:07:59,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 21:07:59,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 21:07:59,749 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 136 [2022-07-19 21:07:59,754 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) [2022-07-19 21:07:59,754 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:07:59,754 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 136 [2022-07-19 21:07:59,755 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:08:00,022 INFO L129 PetriNetUnfolder]: 162/546 cut-off events. [2022-07-19 21:08:00,022 INFO L130 PetriNetUnfolder]: For 22/22 co-relation queries the response was YES. [2022-07-19 21:08:00,028 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. [2022-07-19 21:08:00,033 INFO L132 encePairwiseOnDemand]: 131/136 looper letters, 18 selfloop transitions, 2 changer transitions 0/136 dead transitions. [2022-07-19 21:08:00,034 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 136 transitions, 333 flow [2022-07-19 21:08:00,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 21:08:00,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-19 21:08:00,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 385 transitions. [2022-07-19 21:08:00,059 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9436274509803921 [2022-07-19 21:08:00,060 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 385 transitions. [2022-07-19 21:08:00,060 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 385 transitions. [2022-07-19 21:08:00,063 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:08:00,066 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 385 transitions. [2022-07-19 21:08:00,070 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) [2022-07-19 21:08:00,078 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) [2022-07-19 21:08:00,078 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) [2022-07-19 21:08:00,080 INFO L186 Difference]: Start difference. First operand has 143 places, 132 transitions, 276 flow. Second operand 3 states and 385 transitions. [2022-07-19 21:08:00,081 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 136 transitions, 333 flow [2022-07-19 21:08:00,084 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 136 transitions, 326 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-07-19 21:08:00,088 INFO L242 Difference]: Finished difference. Result has 139 places, 128 transitions, 268 flow [2022-07-19 21:08:00,091 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} [2022-07-19 21:08:00,095 INFO L279 CegarLoopForPetriNet]: 143 programPoint places, -4 predicate places. [2022-07-19 21:08:00,096 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 128 transitions, 268 flow [2022-07-19 21:08:00,096 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) [2022-07-19 21:08:00,096 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:08:00,096 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] [2022-07-19 21:08:00,097 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-19 21:08:00,097 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)] === [2022-07-19 21:08:00,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:08:00,098 INFO L85 PathProgramCache]: Analyzing trace with hash -619394308, now seen corresponding path program 1 times [2022-07-19 21:08:00,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:08:00,099 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1777865398] [2022-07-19 21:08:00,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:08:00,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:08:00,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:08:00,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:08:00,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:08:00,367 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1777865398] [2022-07-19 21:08:00,368 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1777865398] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:08:00,370 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:08:00,371 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-19 21:08:00,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350220471] [2022-07-19 21:08:00,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:08:00,373 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 21:08:00,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:08:00,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 21:08:00,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-19 21:08:00,376 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 136 [2022-07-19 21:08:00,380 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) [2022-07-19 21:08:00,380 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:08:00,380 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 136 [2022-07-19 21:08:00,380 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:08:06,135 INFO L129 PetriNetUnfolder]: 21069/43826 cut-off events. [2022-07-19 21:08:06,135 INFO L130 PetriNetUnfolder]: For 1735/1735 co-relation queries the response was YES. [2022-07-19 21:08:06,350 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. [2022-07-19 21:08:06,508 INFO L132 encePairwiseOnDemand]: 121/136 looper letters, 38 selfloop transitions, 11 changer transitions 102/236 dead transitions. [2022-07-19 21:08:06,508 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 236 transitions, 778 flow [2022-07-19 21:08:06,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-19 21:08:06,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-07-19 21:08:06,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1058 transitions. [2022-07-19 21:08:06,512 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8643790849673203 [2022-07-19 21:08:06,512 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1058 transitions. [2022-07-19 21:08:06,512 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1058 transitions. [2022-07-19 21:08:06,513 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:08:06,514 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1058 transitions. [2022-07-19 21:08:06,517 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) [2022-07-19 21:08:06,520 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) [2022-07-19 21:08:06,521 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) [2022-07-19 21:08:06,521 INFO L186 Difference]: Start difference. First operand has 139 places, 128 transitions, 268 flow. Second operand 9 states and 1058 transitions. [2022-07-19 21:08:06,521 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 236 transitions, 778 flow [2022-07-19 21:08:06,526 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 236 transitions, 760 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-07-19 21:08:06,530 INFO L242 Difference]: Finished difference. Result has 153 places, 122 transitions, 374 flow [2022-07-19 21:08:06,530 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} [2022-07-19 21:08:06,531 INFO L279 CegarLoopForPetriNet]: 143 programPoint places, 10 predicate places. [2022-07-19 21:08:06,531 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 122 transitions, 374 flow [2022-07-19 21:08:06,532 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) [2022-07-19 21:08:06,532 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:08:06,532 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] [2022-07-19 21:08:06,533 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-19 21:08:06,534 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)] === [2022-07-19 21:08:06,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:08:06,534 INFO L85 PathProgramCache]: Analyzing trace with hash -61313541, now seen corresponding path program 1 times [2022-07-19 21:08:06,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:08:06,535 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [485944556] [2022-07-19 21:08:06,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:08:06,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:08:06,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:08:06,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:08:06,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:08:06,776 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [485944556] [2022-07-19 21:08:06,776 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [485944556] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:08:06,776 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:08:06,777 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 21:08:06,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817809024] [2022-07-19 21:08:06,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:08:06,778 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 21:08:06,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:08:06,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 21:08:06,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-19 21:08:06,780 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 136 [2022-07-19 21:08:06,781 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) [2022-07-19 21:08:06,781 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:08:06,781 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 136 [2022-07-19 21:08:06,781 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:08:10,330 INFO L129 PetriNetUnfolder]: 16182/26980 cut-off events. [2022-07-19 21:08:10,331 INFO L130 PetriNetUnfolder]: For 49365/49365 co-relation queries the response was YES. [2022-07-19 21:08:10,444 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. [2022-07-19 21:08:10,588 INFO L132 encePairwiseOnDemand]: 120/136 looper letters, 49 selfloop transitions, 16 changer transitions 133/283 dead transitions. [2022-07-19 21:08:10,588 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 283 transitions, 1710 flow [2022-07-19 21:08:10,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-19 21:08:10,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-07-19 21:08:10,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1503 transitions. [2022-07-19 21:08:10,593 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8501131221719457 [2022-07-19 21:08:10,593 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1503 transitions. [2022-07-19 21:08:10,593 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1503 transitions. [2022-07-19 21:08:10,594 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:08:10,595 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1503 transitions. [2022-07-19 21:08:10,598 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) [2022-07-19 21:08:10,601 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) [2022-07-19 21:08:10,603 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) [2022-07-19 21:08:10,603 INFO L186 Difference]: Start difference. First operand has 153 places, 122 transitions, 374 flow. Second operand 13 states and 1503 transitions. [2022-07-19 21:08:10,603 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 283 transitions, 1710 flow [2022-07-19 21:08:10,658 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 283 transitions, 1592 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-07-19 21:08:10,664 INFO L242 Difference]: Finished difference. Result has 155 places, 130 transitions, 528 flow [2022-07-19 21:08:10,664 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} [2022-07-19 21:08:10,666 INFO L279 CegarLoopForPetriNet]: 143 programPoint places, 12 predicate places. [2022-07-19 21:08:10,667 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 130 transitions, 528 flow [2022-07-19 21:08:10,668 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) [2022-07-19 21:08:10,668 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:08:10,668 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] [2022-07-19 21:08:10,668 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-19 21:08:10,669 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)] === [2022-07-19 21:08:10,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:08:10,670 INFO L85 PathProgramCache]: Analyzing trace with hash 334177501, now seen corresponding path program 1 times [2022-07-19 21:08:10,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:08:10,670 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811932896] [2022-07-19 21:08:10,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:08:10,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:08:10,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:08:10,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:08:10,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:08:10,809 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811932896] [2022-07-19 21:08:10,809 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1811932896] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:08:10,809 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:08:10,809 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 21:08:10,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545437312] [2022-07-19 21:08:10,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:08:10,810 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 21:08:10,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:08:10,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 21:08:10,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-19 21:08:10,812 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 136 [2022-07-19 21:08:10,813 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) [2022-07-19 21:08:10,813 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:08:10,814 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 136 [2022-07-19 21:08:10,814 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:08:14,122 INFO L129 PetriNetUnfolder]: 14142/22995 cut-off events. [2022-07-19 21:08:14,123 INFO L130 PetriNetUnfolder]: For 92410/92410 co-relation queries the response was YES. [2022-07-19 21:08:14,258 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. [2022-07-19 21:08:14,354 INFO L132 encePairwiseOnDemand]: 121/136 looper letters, 58 selfloop transitions, 23 changer transitions 121/287 dead transitions. [2022-07-19 21:08:14,354 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 287 transitions, 2008 flow [2022-07-19 21:08:14,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-19 21:08:14,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-07-19 21:08:14,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1501 transitions. [2022-07-19 21:08:14,358 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8489819004524887 [2022-07-19 21:08:14,359 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1501 transitions. [2022-07-19 21:08:14,361 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1501 transitions. [2022-07-19 21:08:14,363 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:08:14,363 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1501 transitions. [2022-07-19 21:08:14,366 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) [2022-07-19 21:08:14,370 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) [2022-07-19 21:08:14,371 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) [2022-07-19 21:08:14,371 INFO L186 Difference]: Start difference. First operand has 155 places, 130 transitions, 528 flow. Second operand 13 states and 1501 transitions. [2022-07-19 21:08:14,371 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 287 transitions, 2008 flow [2022-07-19 21:08:14,702 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 287 transitions, 1960 flow, removed 24 selfloop flow, removed 0 redundant places. [2022-07-19 21:08:14,706 INFO L242 Difference]: Finished difference. Result has 170 places, 143 transitions, 796 flow [2022-07-19 21:08:14,706 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} [2022-07-19 21:08:14,707 INFO L279 CegarLoopForPetriNet]: 143 programPoint places, 27 predicate places. [2022-07-19 21:08:14,707 INFO L495 AbstractCegarLoop]: Abstraction has has 170 places, 143 transitions, 796 flow [2022-07-19 21:08:14,708 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) [2022-07-19 21:08:14,708 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:08:14,708 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] [2022-07-19 21:08:14,708 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-19 21:08:14,708 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)] === [2022-07-19 21:08:14,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:08:14,709 INFO L85 PathProgramCache]: Analyzing trace with hash -1640757958, now seen corresponding path program 1 times [2022-07-19 21:08:14,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:08:14,709 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685638265] [2022-07-19 21:08:14,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:08:14,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:08:14,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:08:14,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:08:14,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:08:14,811 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685638265] [2022-07-19 21:08:14,811 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1685638265] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:08:14,812 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:08:14,812 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-19 21:08:14,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632879985] [2022-07-19 21:08:14,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:08:14,813 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 21:08:14,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:08:14,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 21:08:14,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-19 21:08:14,814 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 136 [2022-07-19 21:08:14,815 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) [2022-07-19 21:08:14,815 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:08:14,815 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 136 [2022-07-19 21:08:14,815 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:08:17,312 INFO L129 PetriNetUnfolder]: 8512/15207 cut-off events. [2022-07-19 21:08:17,312 INFO L130 PetriNetUnfolder]: For 82362/86903 co-relation queries the response was YES. [2022-07-19 21:08:17,413 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. [2022-07-19 21:08:17,474 INFO L132 encePairwiseOnDemand]: 130/136 looper letters, 24 selfloop transitions, 4 changer transitions 46/194 dead transitions. [2022-07-19 21:08:17,475 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 194 transitions, 1208 flow [2022-07-19 21:08:17,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-19 21:08:17,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-07-19 21:08:17,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1074 transitions. [2022-07-19 21:08:17,483 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8774509803921569 [2022-07-19 21:08:17,483 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1074 transitions. [2022-07-19 21:08:17,483 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1074 transitions. [2022-07-19 21:08:17,484 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:08:17,484 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1074 transitions. [2022-07-19 21:08:17,488 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) [2022-07-19 21:08:17,494 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) [2022-07-19 21:08:17,494 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) [2022-07-19 21:08:17,495 INFO L186 Difference]: Start difference. First operand has 170 places, 143 transitions, 796 flow. Second operand 9 states and 1074 transitions. [2022-07-19 21:08:17,495 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 194 transitions, 1208 flow [2022-07-19 21:08:17,982 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 194 transitions, 1128 flow, removed 40 selfloop flow, removed 6 redundant places. [2022-07-19 21:08:17,985 INFO L242 Difference]: Finished difference. Result has 170 places, 143 transitions, 758 flow [2022-07-19 21:08:17,985 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} [2022-07-19 21:08:17,986 INFO L279 CegarLoopForPetriNet]: 143 programPoint places, 27 predicate places. [2022-07-19 21:08:17,986 INFO L495 AbstractCegarLoop]: Abstraction has has 170 places, 143 transitions, 758 flow [2022-07-19 21:08:17,986 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) [2022-07-19 21:08:17,986 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:08:17,987 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] [2022-07-19 21:08:17,987 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-19 21:08:17,987 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)] === [2022-07-19 21:08:17,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:08:17,987 INFO L85 PathProgramCache]: Analyzing trace with hash -1479970143, now seen corresponding path program 1 times [2022-07-19 21:08:17,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:08:17,988 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1235946436] [2022-07-19 21:08:17,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:08:17,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:08:18,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:08:18,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:08:18,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:08:18,131 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1235946436] [2022-07-19 21:08:18,131 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1235946436] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:08:18,131 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:08:18,132 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 21:08:18,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379207251] [2022-07-19 21:08:18,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:08:18,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 21:08:18,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:08:18,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 21:08:18,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-19 21:08:18,134 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 136 [2022-07-19 21:08:18,134 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) [2022-07-19 21:08:18,134 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:08:18,134 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 136 [2022-07-19 21:08:18,135 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:08:20,804 INFO L129 PetriNetUnfolder]: 9563/16706 cut-off events. [2022-07-19 21:08:20,805 INFO L130 PetriNetUnfolder]: For 101728/101728 co-relation queries the response was YES. [2022-07-19 21:08:20,902 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. [2022-07-19 21:08:20,985 INFO L132 encePairwiseOnDemand]: 120/136 looper letters, 62 selfloop transitions, 33 changer transitions 109/289 dead transitions. [2022-07-19 21:08:20,985 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 289 transitions, 2412 flow [2022-07-19 21:08:20,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-19 21:08:20,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-07-19 21:08:20,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1490 transitions. [2022-07-19 21:08:20,994 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8427601809954751 [2022-07-19 21:08:20,995 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1490 transitions. [2022-07-19 21:08:20,995 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1490 transitions. [2022-07-19 21:08:20,996 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:08:20,996 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1490 transitions. [2022-07-19 21:08:21,001 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) [2022-07-19 21:08:21,005 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) [2022-07-19 21:08:21,006 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) [2022-07-19 21:08:21,007 INFO L186 Difference]: Start difference. First operand has 170 places, 143 transitions, 758 flow. Second operand 13 states and 1490 transitions. [2022-07-19 21:08:21,007 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 289 transitions, 2412 flow [2022-07-19 21:08:21,299 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 289 transitions, 2320 flow, removed 40 selfloop flow, removed 15 redundant places. [2022-07-19 21:08:21,303 INFO L242 Difference]: Finished difference. Result has 173 places, 157 transitions, 1073 flow [2022-07-19 21:08:21,305 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} [2022-07-19 21:08:21,306 INFO L279 CegarLoopForPetriNet]: 143 programPoint places, 30 predicate places. [2022-07-19 21:08:21,306 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 157 transitions, 1073 flow [2022-07-19 21:08:21,307 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) [2022-07-19 21:08:21,307 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:08:21,307 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] [2022-07-19 21:08:21,307 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-19 21:08:21,307 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)] === [2022-07-19 21:08:21,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:08:21,308 INFO L85 PathProgramCache]: Analyzing trace with hash 869168544, now seen corresponding path program 1 times [2022-07-19 21:08:21,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:08:21,308 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [920006515] [2022-07-19 21:08:21,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:08:21,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:08:21,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:08:21,439 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:08:21,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:08:21,439 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [920006515] [2022-07-19 21:08:21,439 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [920006515] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:08:21,440 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:08:21,440 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 21:08:21,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107029707] [2022-07-19 21:08:21,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:08:21,444 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 21:08:21,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:08:21,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 21:08:21,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-19 21:08:21,446 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 136 [2022-07-19 21:08:21,447 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) [2022-07-19 21:08:21,447 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:08:21,447 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 136 [2022-07-19 21:08:21,447 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:08:24,698 INFO L129 PetriNetUnfolder]: 11015/18803 cut-off events. [2022-07-19 21:08:24,698 INFO L130 PetriNetUnfolder]: For 147951/147951 co-relation queries the response was YES. [2022-07-19 21:08:24,856 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. [2022-07-19 21:08:24,925 INFO L132 encePairwiseOnDemand]: 121/136 looper letters, 62 selfloop transitions, 42 changer transitions 100/289 dead transitions. [2022-07-19 21:08:24,925 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 289 transitions, 2641 flow [2022-07-19 21:08:24,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-19 21:08:24,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-07-19 21:08:24,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1481 transitions. [2022-07-19 21:08:24,932 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8376696832579186 [2022-07-19 21:08:24,932 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1481 transitions. [2022-07-19 21:08:24,932 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1481 transitions. [2022-07-19 21:08:24,934 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:08:24,934 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1481 transitions. [2022-07-19 21:08:24,937 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) [2022-07-19 21:08:24,941 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) [2022-07-19 21:08:24,942 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) [2022-07-19 21:08:24,942 INFO L186 Difference]: Start difference. First operand has 173 places, 157 transitions, 1073 flow. Second operand 13 states and 1481 transitions. [2022-07-19 21:08:24,942 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 289 transitions, 2641 flow [2022-07-19 21:08:25,623 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 289 transitions, 2511 flow, removed 65 selfloop flow, removed 2 redundant places. [2022-07-19 21:08:25,627 INFO L242 Difference]: Finished difference. Result has 186 places, 161 transitions, 1328 flow [2022-07-19 21:08:25,627 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} [2022-07-19 21:08:25,628 INFO L279 CegarLoopForPetriNet]: 143 programPoint places, 43 predicate places. [2022-07-19 21:08:25,628 INFO L495 AbstractCegarLoop]: Abstraction has has 186 places, 161 transitions, 1328 flow [2022-07-19 21:08:25,628 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) [2022-07-19 21:08:25,629 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:08:25,629 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] [2022-07-19 21:08:25,629 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-19 21:08:25,629 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)] === [2022-07-19 21:08:25,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:08:25,630 INFO L85 PathProgramCache]: Analyzing trace with hash -262640256, now seen corresponding path program 1 times [2022-07-19 21:08:25,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:08:25,630 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [3584] [2022-07-19 21:08:25,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:08:25,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:08:25,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:08:25,746 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:08:25,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:08:25,747 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [3584] [2022-07-19 21:08:25,747 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [3584] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:08:25,747 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:08:25,747 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-19 21:08:25,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370490042] [2022-07-19 21:08:25,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:08:25,748 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 21:08:25,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:08:25,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 21:08:25,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-19 21:08:25,750 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 136 [2022-07-19 21:08:25,751 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) [2022-07-19 21:08:25,751 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:08:25,751 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 136 [2022-07-19 21:08:25,751 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:08:34,355 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$tmp_guard1~0 256) 0)), Black: 217#(= ~x~0 0), 313#(= ~y~0 1)]) [2022-07-19 21:08:34,356 INFO L384 tUnfolder$Statistics]: this new event has 100 ancestors and is cut-off event [2022-07-19 21:08:34,356 INFO L387 tUnfolder$Statistics]: existing Event has 100 ancestors and is cut-off event [2022-07-19 21:08:34,356 INFO L387 tUnfolder$Statistics]: existing Event has 100 ancestors and is cut-off event [2022-07-19 21:08:34,357 INFO L387 tUnfolder$Statistics]: existing Event has 100 ancestors and is cut-off event [2022-07-19 21:08:34,453 INFO L129 PetriNetUnfolder]: 31466/54809 cut-off events. [2022-07-19 21:08:34,454 INFO L130 PetriNetUnfolder]: For 234016/320765 co-relation queries the response was YES. [2022-07-19 21:08:35,174 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. [2022-07-19 21:08:35,348 INFO L132 encePairwiseOnDemand]: 125/136 looper letters, 117 selfloop transitions, 20 changer transitions 0/271 dead transitions. [2022-07-19 21:08:35,348 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 271 transitions, 2430 flow [2022-07-19 21:08:35,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-19 21:08:35,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-07-19 21:08:35,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1197 transitions. [2022-07-19 21:08:35,352 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8801470588235294 [2022-07-19 21:08:35,352 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1197 transitions. [2022-07-19 21:08:35,352 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1197 transitions. [2022-07-19 21:08:35,353 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:08:35,353 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1197 transitions. [2022-07-19 21:08:35,356 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) [2022-07-19 21:08:35,358 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) [2022-07-19 21:08:35,359 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) [2022-07-19 21:08:35,359 INFO L186 Difference]: Start difference. First operand has 186 places, 161 transitions, 1328 flow. Second operand 10 states and 1197 transitions. [2022-07-19 21:08:35,359 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 271 transitions, 2430 flow [2022-07-19 21:08:35,525 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 271 transitions, 2354 flow, removed 38 selfloop flow, removed 10 redundant places. [2022-07-19 21:08:35,529 INFO L242 Difference]: Finished difference. Result has 182 places, 179 transitions, 1437 flow [2022-07-19 21:08:35,529 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} [2022-07-19 21:08:35,530 INFO L279 CegarLoopForPetriNet]: 143 programPoint places, 39 predicate places. [2022-07-19 21:08:35,530 INFO L495 AbstractCegarLoop]: Abstraction has has 182 places, 179 transitions, 1437 flow [2022-07-19 21:08:35,531 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) [2022-07-19 21:08:35,531 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:08:35,531 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] [2022-07-19 21:08:35,532 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-19 21:08:35,532 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)] === [2022-07-19 21:08:35,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:08:35,532 INFO L85 PathProgramCache]: Analyzing trace with hash -711753452, now seen corresponding path program 1 times [2022-07-19 21:08:35,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:08:35,533 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1853248386] [2022-07-19 21:08:35,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:08:35,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:08:35,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:08:35,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:08:35,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:08:35,681 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1853248386] [2022-07-19 21:08:35,681 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1853248386] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:08:35,681 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:08:35,682 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 21:08:35,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455939959] [2022-07-19 21:08:35,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:08:35,682 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 21:08:35,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:08:35,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 21:08:35,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-19 21:08:35,684 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 136 [2022-07-19 21:08:35,685 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) [2022-07-19 21:08:35,685 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:08:35,686 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 136 [2022-07-19 21:08:35,686 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:08:41,713 INFO L129 PetriNetUnfolder]: 13987/35941 cut-off events. [2022-07-19 21:08:41,714 INFO L130 PetriNetUnfolder]: For 194398/200371 co-relation queries the response was YES. [2022-07-19 21:08:42,140 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. [2022-07-19 21:08:42,298 INFO L132 encePairwiseOnDemand]: 121/136 looper letters, 148 selfloop transitions, 69 changer transitions 3/323 dead transitions. [2022-07-19 21:08:42,298 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 323 transitions, 3552 flow [2022-07-19 21:08:42,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-19 21:08:42,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-07-19 21:08:42,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1473 transitions. [2022-07-19 21:08:42,302 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8331447963800905 [2022-07-19 21:08:42,302 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1473 transitions. [2022-07-19 21:08:42,303 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1473 transitions. [2022-07-19 21:08:42,303 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:08:42,304 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1473 transitions. [2022-07-19 21:08:42,306 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) [2022-07-19 21:08:42,310 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) [2022-07-19 21:08:42,310 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) [2022-07-19 21:08:42,311 INFO L186 Difference]: Start difference. First operand has 182 places, 179 transitions, 1437 flow. Second operand 13 states and 1473 transitions. [2022-07-19 21:08:42,311 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 323 transitions, 3552 flow [2022-07-19 21:08:42,929 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 323 transitions, 3486 flow, removed 32 selfloop flow, removed 3 redundant places. [2022-07-19 21:08:42,933 INFO L242 Difference]: Finished difference. Result has 203 places, 220 transitions, 2553 flow [2022-07-19 21:08:42,933 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} [2022-07-19 21:08:42,934 INFO L279 CegarLoopForPetriNet]: 143 programPoint places, 60 predicate places. [2022-07-19 21:08:42,934 INFO L495 AbstractCegarLoop]: Abstraction has has 203 places, 220 transitions, 2553 flow [2022-07-19 21:08:42,934 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) [2022-07-19 21:08:42,934 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:08:42,935 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] [2022-07-19 21:08:42,935 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-19 21:08:42,935 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)] === [2022-07-19 21:08:42,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:08:42,935 INFO L85 PathProgramCache]: Analyzing trace with hash -725123640, now seen corresponding path program 1 times [2022-07-19 21:08:42,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:08:42,936 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1422366281] [2022-07-19 21:08:42,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:08:42,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:08:42,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:08:43,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:08:43,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:08:43,053 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1422366281] [2022-07-19 21:08:43,055 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1422366281] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:08:43,056 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:08:43,056 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 21:08:43,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324373080] [2022-07-19 21:08:43,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:08:43,056 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 21:08:43,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:08:43,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 21:08:43,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-19 21:08:43,215 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 136 [2022-07-19 21:08:43,216 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) [2022-07-19 21:08:43,216 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:08:43,216 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 136 [2022-07-19 21:08:43,216 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand