./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 791161d1 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-?-791161d [2022-07-22 21:22:51,937 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 21:22:51,939 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 21:22:51,965 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 21:22:51,965 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 21:22:51,966 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 21:22:51,967 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 21:22:51,969 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 21:22:51,970 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 21:22:51,971 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 21:22:51,972 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 21:22:51,973 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 21:22:51,973 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 21:22:51,974 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 21:22:51,975 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 21:22:51,976 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 21:22:51,977 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 21:22:51,977 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 21:22:51,979 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 21:22:51,980 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 21:22:51,981 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 21:22:51,982 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 21:22:51,983 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 21:22:51,984 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 21:22:51,985 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 21:22:51,987 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 21:22:51,987 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 21:22:51,988 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 21:22:51,989 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 21:22:51,989 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 21:22:51,990 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 21:22:51,990 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 21:22:51,991 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 21:22:51,991 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 21:22:51,992 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 21:22:51,993 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 21:22:51,993 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 21:22:51,994 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 21:22:51,994 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 21:22:51,994 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 21:22:51,995 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 21:22:51,999 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 21:22:52,000 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-22 21:22:52,021 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 21:22:52,021 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 21:22:52,021 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 21:22:52,022 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 21:22:52,022 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-22 21:22:52,023 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-22 21:22:52,023 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 21:22:52,023 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 21:22:52,023 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 21:22:52,024 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 21:22:52,025 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-22 21:22:52,025 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-22 21:22:52,025 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-22 21:22:52,025 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 21:22:52,025 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-22 21:22:52,025 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-22 21:22:52,026 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-22 21:22:52,026 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-22 21:22:52,026 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 21:22:52,026 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 21:22:52,026 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-22 21:22:52,027 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 21:22:52,027 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 21:22:52,027 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-22 21:22:52,027 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 21:22:52,028 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 21:22:52,028 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-22 21:22:52,028 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-22 21:22:52,028 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-22 21:22:52,028 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-22 21:22:52,029 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-22 21:22:52,029 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-22 21:22:52,029 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-22 21:22:52,029 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a6d0914923ba77f2cbf67d52dc6ec759519359118cb2f8fd5f254f95bf2b938e [2022-07-22 21:22:52,234 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 21:22:52,260 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 21:22:52,262 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 21:22:52,264 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 21:22:52,264 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 21:22:52,266 INFO L432 ainManager$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 [2022-07-22 21:22:52,356 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/da1af0c86/45162ccdd84a457e9b01713fe49b53aa/FLAG0cb22f000 [2022-07-22 21:22:52,826 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 21:22:52,827 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/mix030_power.oepc_pso.oepc_rmo.oepc.i [2022-07-22 21:22:52,843 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/da1af0c86/45162ccdd84a457e9b01713fe49b53aa/FLAG0cb22f000 [2022-07-22 21:22:53,142 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/da1af0c86/45162ccdd84a457e9b01713fe49b53aa [2022-07-22 21:22:53,144 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 21:22:53,145 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 21:22:53,146 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 21:22:53,147 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 21:22:53,153 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 21:22:53,154 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 09:22:53" (1/1) ... [2022-07-22 21:22:53,155 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@75d88792 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:22:53, skipping insertion in model container [2022-07-22 21:22:53,155 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 09:22:53" (1/1) ... [2022-07-22 21:22:53,161 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 21:22:53,202 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 21:22:53,360 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] [2022-07-22 21:22:53,597 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 21:22:53,609 INFO L203 MainTranslator]: Completed pre-run [2022-07-22 21:22:53,623 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] [2022-07-22 21:22:53,687 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 21:22:53,717 INFO L208 MainTranslator]: Completed translation [2022-07-22 21:22:53,719 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:22:53 WrapperNode [2022-07-22 21:22:53,719 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-22 21:22:53,720 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-22 21:22:53,720 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-22 21:22:53,720 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-22 21:22:53,727 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:22:53" (1/1) ... [2022-07-22 21:22:53,762 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:22:53" (1/1) ... [2022-07-22 21:22:53,805 INFO L137 Inliner]: procedures = 177, calls = 69, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 191 [2022-07-22 21:22:53,806 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-22 21:22:53,807 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-22 21:22:53,807 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-22 21:22:53,807 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-22 21:22:53,814 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:22:53" (1/1) ... [2022-07-22 21:22:53,815 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:22:53" (1/1) ... [2022-07-22 21:22:53,830 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:22:53" (1/1) ... [2022-07-22 21:22:53,831 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:22:53" (1/1) ... [2022-07-22 21:22:53,843 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:22:53" (1/1) ... [2022-07-22 21:22:53,861 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:22:53" (1/1) ... [2022-07-22 21:22:53,863 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:22:53" (1/1) ... [2022-07-22 21:22:53,867 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-22 21:22:53,876 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-22 21:22:53,877 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-22 21:22:53,877 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-22 21:22:53,878 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:22:53" (1/1) ... [2022-07-22 21:22:53,890 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 21:22:53,901 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 21:22:53,921 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) [2022-07-22 21:22:53,943 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 [2022-07-22 21:22:53,958 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-22 21:22:53,959 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-07-22 21:22:53,959 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-22 21:22:53,959 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-22 21:22:53,959 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-22 21:22:53,959 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2022-07-22 21:22:53,959 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2022-07-22 21:22:53,960 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2022-07-22 21:22:53,960 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2022-07-22 21:22:53,960 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2022-07-22 21:22:53,960 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2022-07-22 21:22:53,960 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2022-07-22 21:22:53,960 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2022-07-22 21:22:53,960 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-22 21:22:53,961 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-07-22 21:22:53,961 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-22 21:22:53,961 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-22 21:22:53,963 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-07-22 21:22:54,116 INFO L234 CfgBuilder]: Building ICFG [2022-07-22 21:22:54,118 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-22 21:22:54,698 INFO L275 CfgBuilder]: Performing block encoding [2022-07-22 21:22:55,046 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-22 21:22:55,047 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-22 21:22:55,049 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 09:22:55 BoogieIcfgContainer [2022-07-22 21:22:55,050 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-22 21:22:55,053 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-22 21:22:55,054 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-22 21:22:55,057 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-22 21:22:55,057 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 09:22:53" (1/3) ... [2022-07-22 21:22:55,058 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31d7d747 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 09:22:55, skipping insertion in model container [2022-07-22 21:22:55,058 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:22:53" (2/3) ... [2022-07-22 21:22:55,059 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31d7d747 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 09:22:55, skipping insertion in model container [2022-07-22 21:22:55,059 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 09:22:55" (3/3) ... [2022-07-22 21:22:55,060 INFO L111 eAbstractionObserver]: Analyzing ICFG mix030_power.oepc_pso.oepc_rmo.oepc.i [2022-07-22 21:22:55,068 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-22 21:22:55,076 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-22 21:22:55,077 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-22 21:22:55,077 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-22 21:22:55,148 INFO L135 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-07-22 21:22:55,200 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 147 places, 136 transitions, 292 flow [2022-07-22 21:22:55,261 INFO L129 PetriNetUnfolder]: 2/132 cut-off events. [2022-07-22 21:22:55,262 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-07-22 21:22:55,265 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. [2022-07-22 21:22:55,266 INFO L82 GeneralOperation]: Start removeDead. Operand has 147 places, 136 transitions, 292 flow [2022-07-22 21:22:55,273 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 143 places, 132 transitions, 276 flow [2022-07-22 21:22:55,290 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 21:22:55,298 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@3e0a1845, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@716d366a [2022-07-22 21:22:55,299 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2022-07-22 21:22:55,316 INFO L129 PetriNetUnfolder]: 0/48 cut-off events. [2022-07-22 21:22:55,317 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-07-22 21:22:55,317 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:22:55,318 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] [2022-07-22 21:22:55,319 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P0Err0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-22 21:22:55,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:22:55,325 INFO L85 PathProgramCache]: Analyzing trace with hash 241967491, now seen corresponding path program 1 times [2022-07-22 21:22:55,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:22:55,334 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1731923821] [2022-07-22 21:22:55,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:22:55,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:22:55,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:22:55,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:22:55,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:22:55,626 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1731923821] [2022-07-22 21:22:55,627 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1731923821] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:22:55,627 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:22:55,627 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-22 21:22:55,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65385225] [2022-07-22 21:22:55,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:22:55,638 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 21:22:55,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:22:55,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 21:22:55,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 21:22:55,664 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 136 [2022-07-22 21:22:55,668 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) [2022-07-22 21:22:55,668 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:22:55,668 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 136 [2022-07-22 21:22:55,670 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:22:55,890 INFO L129 PetriNetUnfolder]: 162/546 cut-off events. [2022-07-22 21:22:55,890 INFO L130 PetriNetUnfolder]: For 22/22 co-relation queries the response was YES. [2022-07-22 21:22:55,894 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. [2022-07-22 21:22:55,899 INFO L132 encePairwiseOnDemand]: 131/136 looper letters, 18 selfloop transitions, 2 changer transitions 0/136 dead transitions. [2022-07-22 21:22:55,900 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 136 transitions, 333 flow [2022-07-22 21:22:55,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 21:22:55,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-22 21:22:55,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 385 transitions. [2022-07-22 21:22:55,915 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9436274509803921 [2022-07-22 21:22:55,915 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 385 transitions. [2022-07-22 21:22:55,916 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 385 transitions. [2022-07-22 21:22:55,917 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:22:55,920 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 385 transitions. [2022-07-22 21:22:55,924 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) [2022-07-22 21:22:55,929 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) [2022-07-22 21:22:55,930 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) [2022-07-22 21:22:55,932 INFO L186 Difference]: Start difference. First operand has 143 places, 132 transitions, 276 flow. Second operand 3 states and 385 transitions. [2022-07-22 21:22:55,933 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 136 transitions, 333 flow [2022-07-22 21:22:55,936 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 136 transitions, 326 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-07-22 21:22:55,939 INFO L242 Difference]: Finished difference. Result has 139 places, 128 transitions, 268 flow [2022-07-22 21:22:55,941 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} [2022-07-22 21:22:55,944 INFO L279 CegarLoopForPetriNet]: 143 programPoint places, -4 predicate places. [2022-07-22 21:22:55,944 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 128 transitions, 268 flow [2022-07-22 21:22:55,945 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) [2022-07-22 21:22:55,945 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:22:55,945 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] [2022-07-22 21:22:55,946 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-22 21:22:55,946 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)] === [2022-07-22 21:22:55,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:22:55,947 INFO L85 PathProgramCache]: Analyzing trace with hash -619394308, now seen corresponding path program 1 times [2022-07-22 21:22:55,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:22:55,947 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554728737] [2022-07-22 21:22:55,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:22:55,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:22:56,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:22:56,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:22:56,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:22:56,252 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [554728737] [2022-07-22 21:22:56,252 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [554728737] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:22:56,252 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:22:56,252 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 21:22:56,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165594008] [2022-07-22 21:22:56,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:22:56,254 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 21:22:56,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:22:56,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 21:22:56,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-22 21:22:56,257 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 136 [2022-07-22 21:22:56,258 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) [2022-07-22 21:22:56,258 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:22:56,258 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 136 [2022-07-22 21:22:56,258 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:23:02,277 INFO L129 PetriNetUnfolder]: 21069/43826 cut-off events. [2022-07-22 21:23:02,278 INFO L130 PetriNetUnfolder]: For 1735/1735 co-relation queries the response was YES. [2022-07-22 21:23:02,476 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. [2022-07-22 21:23:02,621 INFO L132 encePairwiseOnDemand]: 121/136 looper letters, 38 selfloop transitions, 11 changer transitions 102/236 dead transitions. [2022-07-22 21:23:02,621 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 236 transitions, 778 flow [2022-07-22 21:23:02,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-22 21:23:02,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-07-22 21:23:02,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1058 transitions. [2022-07-22 21:23:02,626 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8643790849673203 [2022-07-22 21:23:02,627 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1058 transitions. [2022-07-22 21:23:02,627 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1058 transitions. [2022-07-22 21:23:02,627 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:23:02,627 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1058 transitions. [2022-07-22 21:23:02,630 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) [2022-07-22 21:23:02,633 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) [2022-07-22 21:23:02,634 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) [2022-07-22 21:23:02,635 INFO L186 Difference]: Start difference. First operand has 139 places, 128 transitions, 268 flow. Second operand 9 states and 1058 transitions. [2022-07-22 21:23:02,635 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 236 transitions, 778 flow [2022-07-22 21:23:02,637 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 236 transitions, 760 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-07-22 21:23:02,640 INFO L242 Difference]: Finished difference. Result has 153 places, 122 transitions, 374 flow [2022-07-22 21:23:02,641 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} [2022-07-22 21:23:02,642 INFO L279 CegarLoopForPetriNet]: 143 programPoint places, 10 predicate places. [2022-07-22 21:23:02,642 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 122 transitions, 374 flow [2022-07-22 21:23:02,643 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) [2022-07-22 21:23:02,643 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:23:02,643 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] [2022-07-22 21:23:02,643 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-22 21:23:02,643 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)] === [2022-07-22 21:23:02,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:23:02,644 INFO L85 PathProgramCache]: Analyzing trace with hash -61313541, now seen corresponding path program 1 times [2022-07-22 21:23:02,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:23:02,645 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1592941117] [2022-07-22 21:23:02,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:23:02,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:23:02,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:23:02,799 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:23:02,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:23:02,800 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1592941117] [2022-07-22 21:23:02,800 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1592941117] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:23:02,800 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:23:02,801 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 21:23:02,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285756891] [2022-07-22 21:23:02,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:23:02,801 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 21:23:02,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:23:02,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 21:23:02,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-22 21:23:02,803 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 136 [2022-07-22 21:23:02,804 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) [2022-07-22 21:23:02,804 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:23:02,805 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 136 [2022-07-22 21:23:02,805 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:23:06,632 INFO L129 PetriNetUnfolder]: 16182/26980 cut-off events. [2022-07-22 21:23:06,632 INFO L130 PetriNetUnfolder]: For 49365/49365 co-relation queries the response was YES. [2022-07-22 21:23:06,723 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. [2022-07-22 21:23:06,832 INFO L132 encePairwiseOnDemand]: 120/136 looper letters, 49 selfloop transitions, 16 changer transitions 133/283 dead transitions. [2022-07-22 21:23:06,832 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 283 transitions, 1710 flow [2022-07-22 21:23:06,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-22 21:23:06,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-07-22 21:23:06,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1503 transitions. [2022-07-22 21:23:06,838 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8501131221719457 [2022-07-22 21:23:06,839 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1503 transitions. [2022-07-22 21:23:06,839 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1503 transitions. [2022-07-22 21:23:06,840 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:23:06,840 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1503 transitions. [2022-07-22 21:23:06,843 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) [2022-07-22 21:23:06,847 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) [2022-07-22 21:23:06,849 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) [2022-07-22 21:23:06,849 INFO L186 Difference]: Start difference. First operand has 153 places, 122 transitions, 374 flow. Second operand 13 states and 1503 transitions. [2022-07-22 21:23:06,849 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 283 transitions, 1710 flow [2022-07-22 21:23:06,903 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 283 transitions, 1592 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-07-22 21:23:06,909 INFO L242 Difference]: Finished difference. Result has 155 places, 130 transitions, 528 flow [2022-07-22 21:23:06,909 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} [2022-07-22 21:23:06,911 INFO L279 CegarLoopForPetriNet]: 143 programPoint places, 12 predicate places. [2022-07-22 21:23:06,912 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 130 transitions, 528 flow [2022-07-22 21:23:06,913 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) [2022-07-22 21:23:06,913 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:23:06,913 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] [2022-07-22 21:23:06,914 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-22 21:23:06,914 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)] === [2022-07-22 21:23:06,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:23:06,915 INFO L85 PathProgramCache]: Analyzing trace with hash 334177501, now seen corresponding path program 1 times [2022-07-22 21:23:06,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:23:06,916 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864396186] [2022-07-22 21:23:06,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:23:06,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:23:06,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:23:07,077 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:23:07,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:23:07,078 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1864396186] [2022-07-22 21:23:07,079 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1864396186] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:23:07,079 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:23:07,079 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 21:23:07,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605652700] [2022-07-22 21:23:07,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:23:07,081 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 21:23:07,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:23:07,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 21:23:07,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-22 21:23:07,086 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 136 [2022-07-22 21:23:07,087 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) [2022-07-22 21:23:07,087 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:23:07,087 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 136 [2022-07-22 21:23:07,088 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:23:10,563 INFO L129 PetriNetUnfolder]: 14142/22995 cut-off events. [2022-07-22 21:23:10,564 INFO L130 PetriNetUnfolder]: For 92410/92410 co-relation queries the response was YES. [2022-07-22 21:23:10,705 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. [2022-07-22 21:23:10,818 INFO L132 encePairwiseOnDemand]: 121/136 looper letters, 58 selfloop transitions, 23 changer transitions 121/287 dead transitions. [2022-07-22 21:23:10,819 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 287 transitions, 2008 flow [2022-07-22 21:23:10,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-22 21:23:10,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-07-22 21:23:10,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1501 transitions. [2022-07-22 21:23:10,824 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8489819004524887 [2022-07-22 21:23:10,824 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1501 transitions. [2022-07-22 21:23:10,825 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1501 transitions. [2022-07-22 21:23:10,829 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:23:10,829 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1501 transitions. [2022-07-22 21:23:10,832 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) [2022-07-22 21:23:10,836 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) [2022-07-22 21:23:10,837 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) [2022-07-22 21:23:10,837 INFO L186 Difference]: Start difference. First operand has 155 places, 130 transitions, 528 flow. Second operand 13 states and 1501 transitions. [2022-07-22 21:23:10,837 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 287 transitions, 2008 flow [2022-07-22 21:23:11,257 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 287 transitions, 1960 flow, removed 24 selfloop flow, removed 0 redundant places. [2022-07-22 21:23:11,261 INFO L242 Difference]: Finished difference. Result has 170 places, 143 transitions, 796 flow [2022-07-22 21:23:11,261 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} [2022-07-22 21:23:11,262 INFO L279 CegarLoopForPetriNet]: 143 programPoint places, 27 predicate places. [2022-07-22 21:23:11,262 INFO L495 AbstractCegarLoop]: Abstraction has has 170 places, 143 transitions, 796 flow [2022-07-22 21:23:11,262 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) [2022-07-22 21:23:11,262 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:23:11,263 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] [2022-07-22 21:23:11,263 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-22 21:23:11,263 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)] === [2022-07-22 21:23:11,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:23:11,264 INFO L85 PathProgramCache]: Analyzing trace with hash -1640757958, now seen corresponding path program 1 times [2022-07-22 21:23:11,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:23:11,264 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [768173808] [2022-07-22 21:23:11,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:23:11,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:23:11,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:23:11,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:23:11,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:23:11,375 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [768173808] [2022-07-22 21:23:11,375 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [768173808] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:23:11,376 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:23:11,376 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 21:23:11,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766386918] [2022-07-22 21:23:11,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:23:11,376 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 21:23:11,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:23:11,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 21:23:11,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-22 21:23:11,378 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 136 [2022-07-22 21:23:11,379 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) [2022-07-22 21:23:11,379 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:23:11,379 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 136 [2022-07-22 21:23:11,379 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:23:13,794 INFO L129 PetriNetUnfolder]: 8512/15207 cut-off events. [2022-07-22 21:23:13,794 INFO L130 PetriNetUnfolder]: For 82362/86903 co-relation queries the response was YES. [2022-07-22 21:23:13,925 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. [2022-07-22 21:23:14,147 INFO L132 encePairwiseOnDemand]: 130/136 looper letters, 24 selfloop transitions, 4 changer transitions 46/194 dead transitions. [2022-07-22 21:23:14,147 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 194 transitions, 1208 flow [2022-07-22 21:23:14,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-22 21:23:14,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-07-22 21:23:14,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1074 transitions. [2022-07-22 21:23:14,152 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8774509803921569 [2022-07-22 21:23:14,152 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1074 transitions. [2022-07-22 21:23:14,152 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1074 transitions. [2022-07-22 21:23:14,153 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:23:14,153 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1074 transitions. [2022-07-22 21:23:14,158 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) [2022-07-22 21:23:14,164 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) [2022-07-22 21:23:14,164 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) [2022-07-22 21:23:14,165 INFO L186 Difference]: Start difference. First operand has 170 places, 143 transitions, 796 flow. Second operand 9 states and 1074 transitions. [2022-07-22 21:23:14,165 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 194 transitions, 1208 flow [2022-07-22 21:23:14,603 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 194 transitions, 1128 flow, removed 40 selfloop flow, removed 6 redundant places. [2022-07-22 21:23:14,605 INFO L242 Difference]: Finished difference. Result has 170 places, 143 transitions, 758 flow [2022-07-22 21:23:14,606 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} [2022-07-22 21:23:14,606 INFO L279 CegarLoopForPetriNet]: 143 programPoint places, 27 predicate places. [2022-07-22 21:23:14,607 INFO L495 AbstractCegarLoop]: Abstraction has has 170 places, 143 transitions, 758 flow [2022-07-22 21:23:14,607 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) [2022-07-22 21:23:14,607 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:23:14,607 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] [2022-07-22 21:23:14,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-22 21:23:14,608 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)] === [2022-07-22 21:23:14,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:23:14,608 INFO L85 PathProgramCache]: Analyzing trace with hash -1479970143, now seen corresponding path program 1 times [2022-07-22 21:23:14,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:23:14,608 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113311422] [2022-07-22 21:23:14,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:23:14,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:23:14,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:23:14,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:23:14,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:23:14,743 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [113311422] [2022-07-22 21:23:14,743 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [113311422] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:23:14,743 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:23:14,743 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 21:23:14,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397056221] [2022-07-22 21:23:14,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:23:14,744 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 21:23:14,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:23:14,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 21:23:14,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-22 21:23:14,747 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 136 [2022-07-22 21:23:14,748 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) [2022-07-22 21:23:14,748 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:23:14,748 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 136 [2022-07-22 21:23:14,748 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:23:17,358 INFO L129 PetriNetUnfolder]: 9563/16706 cut-off events. [2022-07-22 21:23:17,358 INFO L130 PetriNetUnfolder]: For 101728/101728 co-relation queries the response was YES. [2022-07-22 21:23:17,493 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. [2022-07-22 21:23:17,583 INFO L132 encePairwiseOnDemand]: 120/136 looper letters, 62 selfloop transitions, 33 changer transitions 109/289 dead transitions. [2022-07-22 21:23:17,583 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 289 transitions, 2412 flow [2022-07-22 21:23:17,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-22 21:23:17,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-07-22 21:23:17,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1490 transitions. [2022-07-22 21:23:17,590 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8427601809954751 [2022-07-22 21:23:17,591 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1490 transitions. [2022-07-22 21:23:17,591 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1490 transitions. [2022-07-22 21:23:17,592 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:23:17,592 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1490 transitions. [2022-07-22 21:23:17,597 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) [2022-07-22 21:23:17,603 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) [2022-07-22 21:23:17,604 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) [2022-07-22 21:23:17,605 INFO L186 Difference]: Start difference. First operand has 170 places, 143 transitions, 758 flow. Second operand 13 states and 1490 transitions. [2022-07-22 21:23:17,605 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 289 transitions, 2412 flow [2022-07-22 21:23:17,931 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 289 transitions, 2320 flow, removed 40 selfloop flow, removed 15 redundant places. [2022-07-22 21:23:17,934 INFO L242 Difference]: Finished difference. Result has 173 places, 157 transitions, 1073 flow [2022-07-22 21:23:17,934 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} [2022-07-22 21:23:17,935 INFO L279 CegarLoopForPetriNet]: 143 programPoint places, 30 predicate places. [2022-07-22 21:23:17,935 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 157 transitions, 1073 flow [2022-07-22 21:23:17,935 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) [2022-07-22 21:23:17,936 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:23:17,936 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] [2022-07-22 21:23:17,936 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-22 21:23:17,936 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)] === [2022-07-22 21:23:17,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:23:17,937 INFO L85 PathProgramCache]: Analyzing trace with hash 869168544, now seen corresponding path program 1 times [2022-07-22 21:23:17,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:23:17,937 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565702377] [2022-07-22 21:23:17,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:23:17,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:23:17,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:23:18,093 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:23:18,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:23:18,093 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [565702377] [2022-07-22 21:23:18,093 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [565702377] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:23:18,094 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:23:18,094 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 21:23:18,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644566205] [2022-07-22 21:23:18,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:23:18,099 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 21:23:18,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:23:18,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 21:23:18,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-22 21:23:18,102 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 136 [2022-07-22 21:23:18,103 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) [2022-07-22 21:23:18,103 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:23:18,103 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 136 [2022-07-22 21:23:18,103 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:23:21,317 INFO L129 PetriNetUnfolder]: 11015/18803 cut-off events. [2022-07-22 21:23:21,317 INFO L130 PetriNetUnfolder]: For 147951/147951 co-relation queries the response was YES. [2022-07-22 21:23:21,479 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. [2022-07-22 21:23:21,541 INFO L132 encePairwiseOnDemand]: 121/136 looper letters, 62 selfloop transitions, 42 changer transitions 100/289 dead transitions. [2022-07-22 21:23:21,541 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 289 transitions, 2641 flow [2022-07-22 21:23:21,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-22 21:23:21,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-07-22 21:23:21,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1481 transitions. [2022-07-22 21:23:21,545 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8376696832579186 [2022-07-22 21:23:21,546 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1481 transitions. [2022-07-22 21:23:21,546 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1481 transitions. [2022-07-22 21:23:21,547 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:23:21,547 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1481 transitions. [2022-07-22 21:23:21,550 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) [2022-07-22 21:23:21,553 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) [2022-07-22 21:23:21,554 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) [2022-07-22 21:23:21,554 INFO L186 Difference]: Start difference. First operand has 173 places, 157 transitions, 1073 flow. Second operand 13 states and 1481 transitions. [2022-07-22 21:23:21,554 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 289 transitions, 2641 flow [2022-07-22 21:23:22,019 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 289 transitions, 2511 flow, removed 65 selfloop flow, removed 2 redundant places. [2022-07-22 21:23:22,022 INFO L242 Difference]: Finished difference. Result has 186 places, 161 transitions, 1328 flow [2022-07-22 21:23:22,022 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} [2022-07-22 21:23:22,023 INFO L279 CegarLoopForPetriNet]: 143 programPoint places, 43 predicate places. [2022-07-22 21:23:22,023 INFO L495 AbstractCegarLoop]: Abstraction has has 186 places, 161 transitions, 1328 flow [2022-07-22 21:23:22,024 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) [2022-07-22 21:23:22,024 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:23:22,024 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] [2022-07-22 21:23:22,024 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-22 21:23:22,024 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)] === [2022-07-22 21:23:22,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:23:22,025 INFO L85 PathProgramCache]: Analyzing trace with hash -262640256, now seen corresponding path program 1 times [2022-07-22 21:23:22,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:23:22,025 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580043513] [2022-07-22 21:23:22,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:23:22,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:23:22,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:23:22,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:23:22,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:23:22,110 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [580043513] [2022-07-22 21:23:22,110 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [580043513] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:23:22,110 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:23:22,110 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 21:23:22,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107934107] [2022-07-22 21:23:22,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:23:22,111 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 21:23:22,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:23:22,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 21:23:22,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-22 21:23:22,112 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 136 [2022-07-22 21:23:22,113 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) [2022-07-22 21:23:22,113 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:23:22,114 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 136 [2022-07-22 21:23:22,114 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:23:30,847 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$tmp_guard1~0 256) 0)), Black: 217#(= ~x~0 0), 313#(= ~y~0 1)]) [2022-07-22 21:23:30,848 INFO L384 tUnfolder$Statistics]: this new event has 100 ancestors and is cut-off event [2022-07-22 21:23:30,848 INFO L387 tUnfolder$Statistics]: existing Event has 100 ancestors and is cut-off event [2022-07-22 21:23:30,848 INFO L387 tUnfolder$Statistics]: existing Event has 100 ancestors and is cut-off event [2022-07-22 21:23:30,848 INFO L387 tUnfolder$Statistics]: existing Event has 100 ancestors and is cut-off event [2022-07-22 21:23:30,954 INFO L129 PetriNetUnfolder]: 31466/54809 cut-off events. [2022-07-22 21:23:30,954 INFO L130 PetriNetUnfolder]: For 234016/320765 co-relation queries the response was YES. [2022-07-22 21:23:31,676 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. [2022-07-22 21:23:31,857 INFO L132 encePairwiseOnDemand]: 125/136 looper letters, 117 selfloop transitions, 20 changer transitions 0/271 dead transitions. [2022-07-22 21:23:31,857 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 271 transitions, 2430 flow [2022-07-22 21:23:31,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-22 21:23:31,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-07-22 21:23:31,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1197 transitions. [2022-07-22 21:23:31,861 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8801470588235294 [2022-07-22 21:23:31,861 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1197 transitions. [2022-07-22 21:23:31,861 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1197 transitions. [2022-07-22 21:23:31,862 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:23:31,862 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1197 transitions. [2022-07-22 21:23:31,865 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) [2022-07-22 21:23:31,868 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) [2022-07-22 21:23:31,869 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) [2022-07-22 21:23:31,869 INFO L186 Difference]: Start difference. First operand has 186 places, 161 transitions, 1328 flow. Second operand 10 states and 1197 transitions. [2022-07-22 21:23:31,869 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 271 transitions, 2430 flow [2022-07-22 21:23:32,032 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 271 transitions, 2354 flow, removed 38 selfloop flow, removed 10 redundant places. [2022-07-22 21:23:32,035 INFO L242 Difference]: Finished difference. Result has 182 places, 179 transitions, 1437 flow [2022-07-22 21:23:32,035 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} [2022-07-22 21:23:32,036 INFO L279 CegarLoopForPetriNet]: 143 programPoint places, 39 predicate places. [2022-07-22 21:23:32,036 INFO L495 AbstractCegarLoop]: Abstraction has has 182 places, 179 transitions, 1437 flow [2022-07-22 21:23:32,037 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) [2022-07-22 21:23:32,037 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:23:32,037 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] [2022-07-22 21:23:32,037 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-22 21:23:32,037 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)] === [2022-07-22 21:23:32,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:23:32,037 INFO L85 PathProgramCache]: Analyzing trace with hash -711753452, now seen corresponding path program 1 times [2022-07-22 21:23:32,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:23:32,038 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1745343498] [2022-07-22 21:23:32,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:23:32,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:23:32,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:23:32,167 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:23:32,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:23:32,168 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1745343498] [2022-07-22 21:23:32,168 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1745343498] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:23:32,168 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:23:32,168 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 21:23:32,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020377823] [2022-07-22 21:23:32,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:23:32,169 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 21:23:32,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:23:32,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 21:23:32,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-22 21:23:32,171 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 136 [2022-07-22 21:23:32,172 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) [2022-07-22 21:23:32,172 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:23:32,172 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 136 [2022-07-22 21:23:32,172 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:23:38,015 INFO L129 PetriNetUnfolder]: 13987/35941 cut-off events. [2022-07-22 21:23:38,015 INFO L130 PetriNetUnfolder]: For 194398/200371 co-relation queries the response was YES.