./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-wmm/safe016_pso.oepc_pso.opt_tso.oepc_tso.opt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version ff03de63 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/safe016_pso.oepc_pso.opt_tso.oepc_tso.opt.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 55711f117aca8cc6da45707674eed41f8615ce4fb09ace088988b9afc0dc0851 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ff03de6 [2021-12-21 15:06:22,705 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-21 15:06:22,707 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-21 15:06:22,736 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-21 15:06:22,737 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-21 15:06:22,737 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-21 15:06:22,738 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-21 15:06:22,740 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-21 15:06:22,741 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-21 15:06:22,742 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-21 15:06:22,742 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-21 15:06:22,743 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-21 15:06:22,743 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-21 15:06:22,744 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-21 15:06:22,745 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-21 15:06:22,747 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-21 15:06:22,749 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-21 15:06:22,750 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-21 15:06:22,752 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-21 15:06:22,755 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-21 15:06:22,757 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-21 15:06:22,758 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-21 15:06:22,760 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-21 15:06:22,761 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-21 15:06:22,762 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-21 15:06:22,763 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-21 15:06:22,768 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-21 15:06:22,769 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-21 15:06:22,769 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-21 15:06:22,769 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-21 15:06:22,770 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-21 15:06:22,770 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-21 15:06:22,770 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-21 15:06:22,771 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-21 15:06:22,772 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-21 15:06:22,772 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-21 15:06:22,773 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-21 15:06:22,774 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-21 15:06:22,774 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-21 15:06:22,774 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-21 15:06:22,776 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-21 15:06:22,777 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-21 15:06:22,798 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-21 15:06:22,803 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-21 15:06:22,804 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-21 15:06:22,804 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-21 15:06:22,804 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-21 15:06:22,805 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-21 15:06:22,805 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-21 15:06:22,805 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-21 15:06:22,805 INFO L138 SettingsManager]: * Use SBE=true [2021-12-21 15:06:22,805 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-21 15:06:22,806 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-21 15:06:22,806 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-21 15:06:22,806 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-21 15:06:22,806 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-21 15:06:22,807 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-21 15:06:22,807 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-21 15:06:22,807 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-21 15:06:22,807 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-21 15:06:22,807 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-21 15:06:22,807 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-21 15:06:22,807 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-21 15:06:22,808 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-21 15:06:22,808 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-21 15:06:22,808 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-21 15:06:22,808 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 15:06:22,808 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-21 15:06:22,808 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-21 15:06:22,808 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-21 15:06:22,809 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-21 15:06:22,809 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-21 15:06:22,809 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-21 15:06:22,809 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-21 15:06:22,809 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-21 15:06:22,809 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-21 15:06:22,810 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 55711f117aca8cc6da45707674eed41f8615ce4fb09ace088988b9afc0dc0851 [2021-12-21 15:06:23,008 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-21 15:06:23,023 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-21 15:06:23,025 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-21 15:06:23,026 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-21 15:06:23,027 INFO L275 PluginConnector]: CDTParser initialized [2021-12-21 15:06:23,028 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/safe016_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2021-12-21 15:06:23,071 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/81dea7069/382bf422520240259712a96efd993aaf/FLAG7a1e16228 [2021-12-21 15:06:23,514 INFO L306 CDTParser]: Found 1 translation units. [2021-12-21 15:06:23,515 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe016_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2021-12-21 15:06:23,529 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/81dea7069/382bf422520240259712a96efd993aaf/FLAG7a1e16228 [2021-12-21 15:06:23,544 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/81dea7069/382bf422520240259712a96efd993aaf [2021-12-21 15:06:23,547 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-21 15:06:23,548 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-21 15:06:23,549 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-21 15:06:23,550 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-21 15:06:23,552 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-21 15:06:23,552 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 03:06:23" (1/1) ... [2021-12-21 15:06:23,553 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c1c7b2e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:06:23, skipping insertion in model container [2021-12-21 15:06:23,553 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 03:06:23" (1/1) ... [2021-12-21 15:06:23,557 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-21 15:06:23,593 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-21 15:06:23,719 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/safe016_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2021-12-21 15:06:23,839 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 15:06:23,847 INFO L203 MainTranslator]: Completed pre-run [2021-12-21 15:06:23,854 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/safe016_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2021-12-21 15:06:23,874 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 15:06:23,906 INFO L208 MainTranslator]: Completed translation [2021-12-21 15:06:23,907 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:06:23 WrapperNode [2021-12-21 15:06:23,907 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-21 15:06:23,907 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-21 15:06:23,908 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-21 15:06:23,908 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-21 15:06:23,913 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:06:23" (1/1) ... [2021-12-21 15:06:23,922 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:06:23" (1/1) ... [2021-12-21 15:06:23,934 INFO L137 Inliner]: procedures = 177, calls = 62, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 81 [2021-12-21 15:06:23,935 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-21 15:06:23,935 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-21 15:06:23,936 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-21 15:06:23,936 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-21 15:06:23,941 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:06:23" (1/1) ... [2021-12-21 15:06:23,941 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:06:23" (1/1) ... [2021-12-21 15:06:23,943 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:06:23" (1/1) ... [2021-12-21 15:06:23,950 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:06:23" (1/1) ... [2021-12-21 15:06:23,955 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:06:23" (1/1) ... [2021-12-21 15:06:23,962 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:06:23" (1/1) ... [2021-12-21 15:06:23,963 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:06:23" (1/1) ... [2021-12-21 15:06:23,965 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-21 15:06:23,966 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-21 15:06:23,966 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-21 15:06:23,966 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-21 15:06:23,973 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:06:23" (1/1) ... [2021-12-21 15:06:23,977 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 15:06:23,987 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 15:06:23,997 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) [2021-12-21 15:06:23,999 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 [2021-12-21 15:06:24,021 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-21 15:06:24,022 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-12-21 15:06:24,022 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-21 15:06:24,022 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-21 15:06:24,022 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-21 15:06:24,022 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-12-21 15:06:24,022 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-12-21 15:06:24,022 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-12-21 15:06:24,023 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-12-21 15:06:24,023 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-12-21 15:06:24,023 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-12-21 15:06:24,023 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2021-12-21 15:06:24,023 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2021-12-21 15:06:24,023 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-21 15:06:24,023 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-12-21 15:06:24,023 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-21 15:06:24,024 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-21 15:06:24,025 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-12-21 15:06:24,121 INFO L234 CfgBuilder]: Building ICFG [2021-12-21 15:06:24,123 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-21 15:06:24,268 INFO L275 CfgBuilder]: Performing block encoding [2021-12-21 15:06:24,272 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-21 15:06:24,273 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-21 15:06:24,274 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 03:06:24 BoogieIcfgContainer [2021-12-21 15:06:24,274 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-21 15:06:24,275 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-21 15:06:24,276 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-21 15:06:24,278 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-21 15:06:24,278 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 03:06:23" (1/3) ... [2021-12-21 15:06:24,278 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5389e465 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 03:06:24, skipping insertion in model container [2021-12-21 15:06:24,279 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:06:23" (2/3) ... [2021-12-21 15:06:24,279 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5389e465 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 03:06:24, skipping insertion in model container [2021-12-21 15:06:24,279 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 03:06:24" (3/3) ... [2021-12-21 15:06:24,280 INFO L111 eAbstractionObserver]: Analyzing ICFG safe016_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2021-12-21 15:06:24,283 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-12-21 15:06:24,283 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-21 15:06:24,284 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-21 15:06:24,284 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-12-21 15:06:24,310 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:06:24,311 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:06:24,311 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:06:24,311 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:06:24,311 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:06:24,311 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:06:24,311 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:06:24,312 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:06:24,312 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:06:24,312 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:06:24,312 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:06:24,313 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:06:24,313 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:06:24,313 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:06:24,313 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:06:24,313 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:06:24,314 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:06:24,314 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:06:24,314 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:06:24,314 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:06:24,314 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:06:24,314 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:06:24,315 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:06:24,315 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:06:24,315 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:06:24,316 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:06:24,316 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:06:24,316 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:06:24,316 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:06:24,316 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:06:24,316 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:06:24,316 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:06:24,317 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:06:24,317 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:06:24,317 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:06:24,317 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:06:24,318 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:06:24,318 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:06:24,318 WARN L322 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:06:24,318 WARN L322 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:06:24,318 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:06:24,318 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:06:24,319 WARN L322 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:06:24,319 WARN L322 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:06:24,319 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:06:24,319 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:06:24,319 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:06:24,319 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:06:24,322 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:06:24,322 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:06:24,322 WARN L322 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:06:24,322 WARN L322 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:06:24,324 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:06:24,324 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:06:24,325 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:06:24,325 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:06:24,325 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:06:24,326 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:06:24,326 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:06:24,326 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:06:24,326 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:06:24,327 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:06:24,327 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:06:24,339 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:06:24,340 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-12-21 15:06:24,371 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-21 15:06:24,375 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-12-21 15:06:24,376 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-12-21 15:06:24,383 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 116 places, 105 transitions, 230 flow [2021-12-21 15:06:24,415 INFO L129 PetriNetUnfolder]: 2/101 cut-off events. [2021-12-21 15:06:24,415 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-12-21 15:06:24,418 INFO L84 FinitePrefix]: Finished finitePrefix Result has 114 conditions, 101 events. 2/101 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 51 event pairs, 0 based on Foata normal form. 0/98 useless extension candidates. Maximal degree in co-relation 83. Up to 2 conditions per place. [2021-12-21 15:06:24,419 INFO L82 GeneralOperation]: Start removeDead. Operand has 116 places, 105 transitions, 230 flow [2021-12-21 15:06:24,421 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 97 places, 85 transitions, 182 flow [2021-12-21 15:06:24,436 INFO L129 PetriNetUnfolder]: 1/84 cut-off events. [2021-12-21 15:06:24,436 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-12-21 15:06:24,436 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-21 15:06:24,437 INFO L254 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] [2021-12-21 15:06:24,437 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-12-21 15:06:24,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:06:24,441 INFO L85 PathProgramCache]: Analyzing trace with hash -1881502097, now seen corresponding path program 1 times [2021-12-21 15:06:24,447 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:06:24,447 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1926644547] [2021-12-21 15:06:24,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:06:24,448 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:06:24,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:06:24,818 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 15:06:24,818 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:06:24,818 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1926644547] [2021-12-21 15:06:24,819 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1926644547] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:06:24,819 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 15:06:24,819 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-21 15:06:24,820 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535358485] [2021-12-21 15:06:24,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:06:24,829 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 15:06:24,830 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:06:24,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 15:06:24,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-21 15:06:24,877 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 105 [2021-12-21 15:06:24,881 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 85 transitions, 182 flow. Second operand has 7 states, 7 states have (on average 83.0) internal successors, (581), 7 states have internal predecessors, (581), 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) [2021-12-21 15:06:24,882 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-21 15:06:24,882 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 105 [2021-12-21 15:06:24,882 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-21 15:06:25,355 INFO L129 PetriNetUnfolder]: 872/1800 cut-off events. [2021-12-21 15:06:25,355 INFO L130 PetriNetUnfolder]: For 35/35 co-relation queries the response was YES. [2021-12-21 15:06:25,363 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3227 conditions, 1800 events. 872/1800 cut-off events. For 35/35 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 10795 event pairs, 55 based on Foata normal form. 63/1795 useless extension candidates. Maximal degree in co-relation 3189. Up to 443 conditions per place. [2021-12-21 15:06:25,373 INFO L132 encePairwiseOnDemand]: 93/105 looper letters, 32 selfloop transitions, 7 changer transitions 56/159 dead transitions. [2021-12-21 15:06:25,373 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 159 transitions, 538 flow [2021-12-21 15:06:25,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-21 15:06:25,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-12-21 15:06:25,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1154 transitions. [2021-12-21 15:06:25,391 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8454212454212454 [2021-12-21 15:06:25,392 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1154 transitions. [2021-12-21 15:06:25,392 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1154 transitions. [2021-12-21 15:06:25,395 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-21 15:06:25,397 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1154 transitions. [2021-12-21 15:06:25,402 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 88.76923076923077) internal successors, (1154), 13 states have internal predecessors, (1154), 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) [2021-12-21 15:06:25,411 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 105.0) internal successors, (1470), 14 states have internal predecessors, (1470), 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) [2021-12-21 15:06:25,412 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 105.0) internal successors, (1470), 14 states have internal predecessors, (1470), 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) [2021-12-21 15:06:25,413 INFO L186 Difference]: Start difference. First operand has 97 places, 85 transitions, 182 flow. Second operand 13 states and 1154 transitions. [2021-12-21 15:06:25,414 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 159 transitions, 538 flow [2021-12-21 15:06:25,420 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 159 transitions, 528 flow, removed 0 selfloop flow, removed 4 redundant places. [2021-12-21 15:06:25,423 INFO L242 Difference]: Finished difference. Result has 117 places, 89 transitions, 276 flow [2021-12-21 15:06:25,425 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=176, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=276, PETRI_PLACES=117, PETRI_TRANSITIONS=89} [2021-12-21 15:06:25,428 INFO L334 CegarLoopForPetriNet]: 97 programPoint places, 20 predicate places. [2021-12-21 15:06:25,428 INFO L470 AbstractCegarLoop]: Abstraction has has 117 places, 89 transitions, 276 flow [2021-12-21 15:06:25,428 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 83.0) internal successors, (581), 7 states have internal predecessors, (581), 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) [2021-12-21 15:06:25,429 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-21 15:06:25,429 INFO L254 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] [2021-12-21 15:06:25,429 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-21 15:06:25,429 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-12-21 15:06:25,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:06:25,430 INFO L85 PathProgramCache]: Analyzing trace with hash 676107888, now seen corresponding path program 1 times [2021-12-21 15:06:25,431 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:06:25,431 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1929396799] [2021-12-21 15:06:25,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:06:25,432 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:06:25,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:06:25,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 15:06:25,602 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:06:25,602 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1929396799] [2021-12-21 15:06:25,602 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1929396799] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:06:25,603 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 15:06:25,603 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-21 15:06:25,603 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129532743] [2021-12-21 15:06:25,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:06:25,604 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 15:06:25,605 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:06:25,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 15:06:25,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-21 15:06:25,606 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 105 [2021-12-21 15:06:25,607 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 89 transitions, 276 flow. Second operand has 7 states, 7 states have (on average 83.14285714285714) internal successors, (582), 7 states have internal predecessors, (582), 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) [2021-12-21 15:06:25,607 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-21 15:06:25,607 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 105 [2021-12-21 15:06:25,607 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-21 15:06:25,920 INFO L129 PetriNetUnfolder]: 606/1519 cut-off events. [2021-12-21 15:06:25,921 INFO L130 PetriNetUnfolder]: For 3537/4677 co-relation queries the response was YES. [2021-12-21 15:06:25,926 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5136 conditions, 1519 events. 606/1519 cut-off events. For 3537/4677 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 10101 event pairs, 52 based on Foata normal form. 38/1505 useless extension candidates. Maximal degree in co-relation 5088. Up to 419 conditions per place. [2021-12-21 15:06:25,933 INFO L132 encePairwiseOnDemand]: 93/105 looper letters, 29 selfloop transitions, 12 changer transitions 55/160 dead transitions. [2021-12-21 15:06:25,933 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 160 transitions, 996 flow [2021-12-21 15:06:25,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-21 15:06:25,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-12-21 15:06:25,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1137 transitions. [2021-12-21 15:06:25,936 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.832967032967033 [2021-12-21 15:06:25,936 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1137 transitions. [2021-12-21 15:06:25,936 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1137 transitions. [2021-12-21 15:06:25,936 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-21 15:06:25,936 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1137 transitions. [2021-12-21 15:06:25,938 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 87.46153846153847) internal successors, (1137), 13 states have internal predecessors, (1137), 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) [2021-12-21 15:06:25,940 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 105.0) internal successors, (1470), 14 states have internal predecessors, (1470), 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) [2021-12-21 15:06:25,941 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 105.0) internal successors, (1470), 14 states have internal predecessors, (1470), 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) [2021-12-21 15:06:25,941 INFO L186 Difference]: Start difference. First operand has 117 places, 89 transitions, 276 flow. Second operand 13 states and 1137 transitions. [2021-12-21 15:06:25,941 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 160 transitions, 996 flow [2021-12-21 15:06:25,948 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 160 transitions, 968 flow, removed 12 selfloop flow, removed 4 redundant places. [2021-12-21 15:06:25,950 INFO L242 Difference]: Finished difference. Result has 128 places, 96 transitions, 421 flow [2021-12-21 15:06:25,950 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=268, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=421, PETRI_PLACES=128, PETRI_TRANSITIONS=96} [2021-12-21 15:06:25,951 INFO L334 CegarLoopForPetriNet]: 97 programPoint places, 31 predicate places. [2021-12-21 15:06:25,951 INFO L470 AbstractCegarLoop]: Abstraction has has 128 places, 96 transitions, 421 flow [2021-12-21 15:06:25,951 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 83.14285714285714) internal successors, (582), 7 states have internal predecessors, (582), 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) [2021-12-21 15:06:25,952 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-21 15:06:25,952 INFO L254 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] [2021-12-21 15:06:25,952 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-21 15:06:25,952 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-12-21 15:06:25,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:06:25,953 INFO L85 PathProgramCache]: Analyzing trace with hash -216498907, now seen corresponding path program 1 times [2021-12-21 15:06:25,953 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:06:25,953 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099105645] [2021-12-21 15:06:25,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:06:25,953 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:06:25,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:06:26,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 15:06:26,054 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:06:26,054 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099105645] [2021-12-21 15:06:26,054 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2099105645] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:06:26,054 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 15:06:26,054 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-21 15:06:26,054 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530801936] [2021-12-21 15:06:26,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:06:26,055 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-21 15:06:26,055 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:06:26,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-21 15:06:26,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-12-21 15:06:26,056 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 105 [2021-12-21 15:06:26,057 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 96 transitions, 421 flow. Second operand has 8 states, 8 states have (on average 83.0) internal successors, (664), 8 states have internal predecessors, (664), 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) [2021-12-21 15:06:26,057 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-21 15:06:26,057 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 105 [2021-12-21 15:06:26,057 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-21 15:06:26,335 INFO L129 PetriNetUnfolder]: 431/1241 cut-off events. [2021-12-21 15:06:26,336 INFO L130 PetriNetUnfolder]: For 5889/6972 co-relation queries the response was YES. [2021-12-21 15:06:26,343 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5067 conditions, 1241 events. 431/1241 cut-off events. For 5889/6972 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 8169 event pairs, 51 based on Foata normal form. 31/1221 useless extension candidates. Maximal degree in co-relation 5007. Up to 298 conditions per place. [2021-12-21 15:06:26,348 INFO L132 encePairwiseOnDemand]: 93/105 looper letters, 32 selfloop transitions, 13 changer transitions 72/181 dead transitions. [2021-12-21 15:06:26,348 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 181 transitions, 1546 flow [2021-12-21 15:06:26,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-21 15:06:26,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-12-21 15:06:26,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 968 transitions. [2021-12-21 15:06:26,354 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8380952380952381 [2021-12-21 15:06:26,355 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 968 transitions. [2021-12-21 15:06:26,355 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 968 transitions. [2021-12-21 15:06:26,355 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-21 15:06:26,355 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 968 transitions. [2021-12-21 15:06:26,357 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 88.0) internal successors, (968), 11 states have internal predecessors, (968), 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) [2021-12-21 15:06:26,359 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 105.0) internal successors, (1260), 12 states have internal predecessors, (1260), 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) [2021-12-21 15:06:26,359 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 105.0) internal successors, (1260), 12 states have internal predecessors, (1260), 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) [2021-12-21 15:06:26,360 INFO L186 Difference]: Start difference. First operand has 128 places, 96 transitions, 421 flow. Second operand 11 states and 968 transitions. [2021-12-21 15:06:26,360 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 181 transitions, 1546 flow [2021-12-21 15:06:26,377 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 181 transitions, 1479 flow, removed 30 selfloop flow, removed 4 redundant places. [2021-12-21 15:06:26,381 INFO L242 Difference]: Finished difference. Result has 133 places, 97 transitions, 481 flow [2021-12-21 15:06:26,381 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=400, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=481, PETRI_PLACES=133, PETRI_TRANSITIONS=97} [2021-12-21 15:06:26,383 INFO L334 CegarLoopForPetriNet]: 97 programPoint places, 36 predicate places. [2021-12-21 15:06:26,383 INFO L470 AbstractCegarLoop]: Abstraction has has 133 places, 97 transitions, 481 flow [2021-12-21 15:06:26,383 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 83.0) internal successors, (664), 8 states have internal predecessors, (664), 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) [2021-12-21 15:06:26,383 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-21 15:06:26,383 INFO L254 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] [2021-12-21 15:06:26,384 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-21 15:06:26,384 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-12-21 15:06:26,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:06:26,385 INFO L85 PathProgramCache]: Analyzing trace with hash -1419149676, now seen corresponding path program 1 times [2021-12-21 15:06:26,385 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:06:26,385 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [889435423] [2021-12-21 15:06:26,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:06:26,386 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:06:26,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:06:26,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 15:06:26,527 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:06:26,527 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [889435423] [2021-12-21 15:06:26,527 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [889435423] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:06:26,527 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 15:06:26,527 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-21 15:06:26,527 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096491499] [2021-12-21 15:06:26,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:06:26,528 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 15:06:26,528 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:06:26,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 15:06:26,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-21 15:06:26,529 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 105 [2021-12-21 15:06:26,529 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 97 transitions, 481 flow. Second operand has 7 states, 7 states have (on average 83.42857142857143) internal successors, (584), 7 states have internal predecessors, (584), 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) [2021-12-21 15:06:26,530 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-21 15:06:26,530 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 105 [2021-12-21 15:06:26,530 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-21 15:06:26,746 INFO L129 PetriNetUnfolder]: 203/684 cut-off events. [2021-12-21 15:06:26,746 INFO L130 PetriNetUnfolder]: For 4273/5449 co-relation queries the response was YES. [2021-12-21 15:06:26,749 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3073 conditions, 684 events. 203/684 cut-off events. For 4273/5449 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 4157 event pairs, 18 based on Foata normal form. 17/680 useless extension candidates. Maximal degree in co-relation 3024. Up to 152 conditions per place. [2021-12-21 15:06:26,753 INFO L132 encePairwiseOnDemand]: 95/105 looper letters, 35 selfloop transitions, 15 changer transitions 35/149 dead transitions. [2021-12-21 15:06:26,753 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 149 transitions, 1204 flow [2021-12-21 15:06:26,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-21 15:06:26,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-12-21 15:06:26,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1123 transitions. [2021-12-21 15:06:26,756 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8227106227106227 [2021-12-21 15:06:26,756 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1123 transitions. [2021-12-21 15:06:26,756 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1123 transitions. [2021-12-21 15:06:26,757 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-21 15:06:26,757 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1123 transitions. [2021-12-21 15:06:26,760 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 86.38461538461539) internal successors, (1123), 13 states have internal predecessors, (1123), 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) [2021-12-21 15:06:26,762 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 105.0) internal successors, (1470), 14 states have internal predecessors, (1470), 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) [2021-12-21 15:06:26,762 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 105.0) internal successors, (1470), 14 states have internal predecessors, (1470), 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) [2021-12-21 15:06:26,763 INFO L186 Difference]: Start difference. First operand has 133 places, 97 transitions, 481 flow. Second operand 13 states and 1123 transitions. [2021-12-21 15:06:26,763 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 149 transitions, 1204 flow [2021-12-21 15:06:26,769 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 149 transitions, 1082 flow, removed 31 selfloop flow, removed 12 redundant places. [2021-12-21 15:06:26,772 INFO L242 Difference]: Finished difference. Result has 139 places, 101 transitions, 574 flow [2021-12-21 15:06:26,772 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=428, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=574, PETRI_PLACES=139, PETRI_TRANSITIONS=101} [2021-12-21 15:06:26,773 INFO L334 CegarLoopForPetriNet]: 97 programPoint places, 42 predicate places. [2021-12-21 15:06:26,773 INFO L470 AbstractCegarLoop]: Abstraction has has 139 places, 101 transitions, 574 flow [2021-12-21 15:06:26,774 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 83.42857142857143) internal successors, (584), 7 states have internal predecessors, (584), 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) [2021-12-21 15:06:26,774 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-21 15:06:26,774 INFO L254 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] [2021-12-21 15:06:26,774 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-21 15:06:26,774 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-12-21 15:06:26,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:06:26,775 INFO L85 PathProgramCache]: Analyzing trace with hash 1092340014, now seen corresponding path program 1 times [2021-12-21 15:06:26,775 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:06:26,776 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [370959795] [2021-12-21 15:06:26,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:06:26,776 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:06:26,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:06:26,900 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 15:06:26,900 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:06:26,900 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [370959795] [2021-12-21 15:06:26,901 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [370959795] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:06:26,901 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 15:06:26,901 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-21 15:06:26,901 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748842006] [2021-12-21 15:06:26,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:06:26,902 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-21 15:06:26,902 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:06:26,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-21 15:06:26,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-12-21 15:06:26,903 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 105 [2021-12-21 15:06:26,904 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 101 transitions, 574 flow. Second operand has 8 states, 8 states have (on average 83.125) internal successors, (665), 8 states have internal predecessors, (665), 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) [2021-12-21 15:06:26,904 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-21 15:06:26,904 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 105 [2021-12-21 15:06:26,904 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-21 15:06:27,075 INFO L129 PetriNetUnfolder]: 150/654 cut-off events. [2021-12-21 15:06:27,075 INFO L130 PetriNetUnfolder]: For 5255/6070 co-relation queries the response was YES. [2021-12-21 15:06:27,078 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2992 conditions, 654 events. 150/654 cut-off events. For 5255/6070 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 4181 event pairs, 8 based on Foata normal form. 19/655 useless extension candidates. Maximal degree in co-relation 2922. Up to 111 conditions per place. [2021-12-21 15:06:27,080 INFO L132 encePairwiseOnDemand]: 92/105 looper letters, 31 selfloop transitions, 16 changer transitions 73/184 dead transitions. [2021-12-21 15:06:27,080 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 184 transitions, 1963 flow [2021-12-21 15:06:27,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-21 15:06:27,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-12-21 15:06:27,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 963 transitions. [2021-12-21 15:06:27,082 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8337662337662337 [2021-12-21 15:06:27,083 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 963 transitions. [2021-12-21 15:06:27,083 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 963 transitions. [2021-12-21 15:06:27,083 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-21 15:06:27,083 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 963 transitions. [2021-12-21 15:06:27,085 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 87.54545454545455) internal successors, (963), 11 states have internal predecessors, (963), 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) [2021-12-21 15:06:27,087 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 105.0) internal successors, (1260), 12 states have internal predecessors, (1260), 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) [2021-12-21 15:06:27,088 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 105.0) internal successors, (1260), 12 states have internal predecessors, (1260), 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) [2021-12-21 15:06:27,088 INFO L186 Difference]: Start difference. First operand has 139 places, 101 transitions, 574 flow. Second operand 11 states and 963 transitions. [2021-12-21 15:06:27,088 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 184 transitions, 1963 flow [2021-12-21 15:06:27,096 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 184 transitions, 1891 flow, removed 36 selfloop flow, removed 4 redundant places. [2021-12-21 15:06:27,099 INFO L242 Difference]: Finished difference. Result has 144 places, 100 transitions, 612 flow [2021-12-21 15:06:27,100 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=554, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=612, PETRI_PLACES=144, PETRI_TRANSITIONS=100} [2021-12-21 15:06:27,102 INFO L334 CegarLoopForPetriNet]: 97 programPoint places, 47 predicate places. [2021-12-21 15:06:27,102 INFO L470 AbstractCegarLoop]: Abstraction has has 144 places, 100 transitions, 612 flow [2021-12-21 15:06:27,104 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 83.125) internal successors, (665), 8 states have internal predecessors, (665), 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) [2021-12-21 15:06:27,104 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-21 15:06:27,104 INFO L254 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] [2021-12-21 15:06:27,104 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-21 15:06:27,105 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-12-21 15:06:27,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:06:27,105 INFO L85 PathProgramCache]: Analyzing trace with hash -95709312, now seen corresponding path program 1 times [2021-12-21 15:06:27,105 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:06:27,106 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [558010828] [2021-12-21 15:06:27,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:06:27,107 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:06:27,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:06:27,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 15:06:27,198 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:06:27,198 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [558010828] [2021-12-21 15:06:27,198 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [558010828] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:06:27,198 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 15:06:27,198 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-21 15:06:27,198 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768838596] [2021-12-21 15:06:27,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:06:27,199 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 15:06:27,199 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:06:27,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 15:06:27,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-21 15:06:27,200 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 105 [2021-12-21 15:06:27,200 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 100 transitions, 612 flow. Second operand has 7 states, 7 states have (on average 83.57142857142857) internal successors, (585), 7 states have internal predecessors, (585), 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) [2021-12-21 15:06:27,200 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-21 15:06:27,201 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 105 [2021-12-21 15:06:27,201 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-21 15:06:27,360 INFO L129 PetriNetUnfolder]: 54/403 cut-off events. [2021-12-21 15:06:27,361 INFO L130 PetriNetUnfolder]: For 3342/3458 co-relation queries the response was YES. [2021-12-21 15:06:27,363 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1633 conditions, 403 events. 54/403 cut-off events. For 3342/3458 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 2225 event pairs, 3 based on Foata normal form. 11/407 useless extension candidates. Maximal degree in co-relation 1554. Up to 49 conditions per place. [2021-12-21 15:06:27,364 INFO L132 encePairwiseOnDemand]: 95/105 looper letters, 30 selfloop transitions, 12 changer transitions 28/134 dead transitions. [2021-12-21 15:06:27,364 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 134 transitions, 1216 flow [2021-12-21 15:06:27,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-21 15:06:27,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-12-21 15:06:27,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1114 transitions. [2021-12-21 15:06:27,366 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8161172161172161 [2021-12-21 15:06:27,366 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1114 transitions. [2021-12-21 15:06:27,367 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1114 transitions. [2021-12-21 15:06:27,367 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-21 15:06:27,367 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1114 transitions. [2021-12-21 15:06:27,369 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 85.6923076923077) internal successors, (1114), 13 states have internal predecessors, (1114), 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) [2021-12-21 15:06:27,370 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 105.0) internal successors, (1470), 14 states have internal predecessors, (1470), 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) [2021-12-21 15:06:27,371 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 105.0) internal successors, (1470), 14 states have internal predecessors, (1470), 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) [2021-12-21 15:06:27,371 INFO L186 Difference]: Start difference. First operand has 144 places, 100 transitions, 612 flow. Second operand 13 states and 1114 transitions. [2021-12-21 15:06:27,371 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 134 transitions, 1216 flow [2021-12-21 15:06:27,378 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 134 transitions, 1058 flow, removed 55 selfloop flow, removed 8 redundant places. [2021-12-21 15:06:27,380 INFO L242 Difference]: Finished difference. Result has 152 places, 96 transitions, 543 flow [2021-12-21 15:06:27,380 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=556, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=543, PETRI_PLACES=152, PETRI_TRANSITIONS=96} [2021-12-21 15:06:27,381 INFO L334 CegarLoopForPetriNet]: 97 programPoint places, 55 predicate places. [2021-12-21 15:06:27,381 INFO L470 AbstractCegarLoop]: Abstraction has has 152 places, 96 transitions, 543 flow [2021-12-21 15:06:27,381 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 83.57142857142857) internal successors, (585), 7 states have internal predecessors, (585), 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) [2021-12-21 15:06:27,381 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-21 15:06:27,381 INFO L254 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] [2021-12-21 15:06:27,382 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-21 15:06:27,382 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-12-21 15:06:27,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:06:27,382 INFO L85 PathProgramCache]: Analyzing trace with hash -1275871501, now seen corresponding path program 1 times [2021-12-21 15:06:27,382 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:06:27,382 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [306816733] [2021-12-21 15:06:27,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:06:27,383 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:06:27,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:06:27,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 15:06:27,436 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:06:27,436 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [306816733] [2021-12-21 15:06:27,439 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [306816733] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:06:27,439 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 15:06:27,439 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-21 15:06:27,440 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138315877] [2021-12-21 15:06:27,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:06:27,441 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-21 15:06:27,442 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:06:27,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-21 15:06:27,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-21 15:06:27,443 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 105 [2021-12-21 15:06:27,444 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 96 transitions, 543 flow. Second operand has 6 states, 6 states have (on average 87.83333333333333) internal successors, (527), 6 states have internal predecessors, (527), 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) [2021-12-21 15:06:27,444 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-21 15:06:27,444 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 105 [2021-12-21 15:06:27,444 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-21 15:06:27,753 INFO L129 PetriNetUnfolder]: 1215/2509 cut-off events. [2021-12-21 15:06:27,753 INFO L130 PetriNetUnfolder]: For 3490/3642 co-relation queries the response was YES. [2021-12-21 15:06:27,763 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5593 conditions, 2509 events. 1215/2509 cut-off events. For 3490/3642 co-relation queries the response was YES. Maximal size of possible extension queue 329. Compared 19394 event pairs, 55 based on Foata normal form. 0/2299 useless extension candidates. Maximal degree in co-relation 5554. Up to 806 conditions per place. [2021-12-21 15:06:27,768 INFO L132 encePairwiseOnDemand]: 94/105 looper letters, 35 selfloop transitions, 20 changer transitions 0/135 dead transitions. [2021-12-21 15:06:27,769 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 135 transitions, 735 flow [2021-12-21 15:06:27,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-21 15:06:27,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-12-21 15:06:27,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 917 transitions. [2021-12-21 15:06:27,771 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8733333333333333 [2021-12-21 15:06:27,771 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 917 transitions. [2021-12-21 15:06:27,771 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 917 transitions. [2021-12-21 15:06:27,771 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-21 15:06:27,771 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 917 transitions. [2021-12-21 15:06:27,773 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 91.7) internal successors, (917), 10 states have internal predecessors, (917), 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) [2021-12-21 15:06:27,774 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 105.0) internal successors, (1155), 11 states have internal predecessors, (1155), 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) [2021-12-21 15:06:27,774 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 105.0) internal successors, (1155), 11 states have internal predecessors, (1155), 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) [2021-12-21 15:06:27,774 INFO L186 Difference]: Start difference. First operand has 152 places, 96 transitions, 543 flow. Second operand 10 states and 917 transitions. [2021-12-21 15:06:27,774 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 135 transitions, 735 flow [2021-12-21 15:06:27,814 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 135 transitions, 666 flow, removed 21 selfloop flow, removed 16 redundant places. [2021-12-21 15:06:27,816 INFO L242 Difference]: Finished difference. Result has 142 places, 114 transitions, 617 flow [2021-12-21 15:06:27,816 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=474, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=617, PETRI_PLACES=142, PETRI_TRANSITIONS=114} [2021-12-21 15:06:27,817 INFO L334 CegarLoopForPetriNet]: 97 programPoint places, 45 predicate places. [2021-12-21 15:06:27,817 INFO L470 AbstractCegarLoop]: Abstraction has has 142 places, 114 transitions, 617 flow [2021-12-21 15:06:27,817 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 87.83333333333333) internal successors, (527), 6 states have internal predecessors, (527), 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) [2021-12-21 15:06:27,817 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-21 15:06:27,817 INFO L254 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] [2021-12-21 15:06:27,817 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-21 15:06:27,817 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-12-21 15:06:27,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:06:27,818 INFO L85 PathProgramCache]: Analyzing trace with hash -1855032157, now seen corresponding path program 1 times [2021-12-21 15:06:27,818 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:06:27,818 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666732812] [2021-12-21 15:06:27,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:06:27,818 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:06:27,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:06:27,886 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 15:06:27,887 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:06:27,887 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [666732812] [2021-12-21 15:06:27,887 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [666732812] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:06:27,887 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 15:06:27,887 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-21 15:06:27,888 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99912701] [2021-12-21 15:06:27,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:06:27,888 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 15:06:27,888 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:06:27,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 15:06:27,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-21 15:06:27,889 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 105 [2021-12-21 15:06:27,890 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 114 transitions, 617 flow. Second operand has 7 states, 7 states have (on average 87.71428571428571) internal successors, (614), 7 states have internal predecessors, (614), 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) [2021-12-21 15:06:27,890 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-21 15:06:27,890 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 105 [2021-12-21 15:06:27,890 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-21 15:06:28,307 INFO L129 PetriNetUnfolder]: 1362/2761 cut-off events. [2021-12-21 15:06:28,308 INFO L130 PetriNetUnfolder]: For 8749/10421 co-relation queries the response was YES. [2021-12-21 15:06:28,325 INFO L84 FinitePrefix]: Finished finitePrefix Result has 10561 conditions, 2761 events. 1362/2761 cut-off events. For 8749/10421 co-relation queries the response was YES. Maximal size of possible extension queue 375. Compared 21928 event pairs, 14 based on Foata normal form. 183/2781 useless extension candidates. Maximal degree in co-relation 10529. Up to 1489 conditions per place. [2021-12-21 15:06:28,335 INFO L132 encePairwiseOnDemand]: 94/105 looper letters, 38 selfloop transitions, 38 changer transitions 3/159 dead transitions. [2021-12-21 15:06:28,336 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 159 transitions, 1067 flow [2021-12-21 15:06:28,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-21 15:06:28,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-12-21 15:06:28,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1193 transitions. [2021-12-21 15:06:28,338 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.873992673992674 [2021-12-21 15:06:28,338 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1193 transitions. [2021-12-21 15:06:28,338 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1193 transitions. [2021-12-21 15:06:28,339 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-21 15:06:28,339 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1193 transitions. [2021-12-21 15:06:28,341 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 91.76923076923077) internal successors, (1193), 13 states have internal predecessors, (1193), 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) [2021-12-21 15:06:28,383 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 105.0) internal successors, (1470), 14 states have internal predecessors, (1470), 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) [2021-12-21 15:06:28,383 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 105.0) internal successors, (1470), 14 states have internal predecessors, (1470), 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) [2021-12-21 15:06:28,384 INFO L186 Difference]: Start difference. First operand has 142 places, 114 transitions, 617 flow. Second operand 13 states and 1193 transitions. [2021-12-21 15:06:28,384 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 159 transitions, 1067 flow [2021-12-21 15:06:28,393 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 159 transitions, 1009 flow, removed 28 selfloop flow, removed 6 redundant places. [2021-12-21 15:06:28,396 INFO L242 Difference]: Finished difference. Result has 154 places, 135 transitions, 858 flow [2021-12-21 15:06:28,396 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=559, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=858, PETRI_PLACES=154, PETRI_TRANSITIONS=135} [2021-12-21 15:06:28,398 INFO L334 CegarLoopForPetriNet]: 97 programPoint places, 57 predicate places. [2021-12-21 15:06:28,398 INFO L470 AbstractCegarLoop]: Abstraction has has 154 places, 135 transitions, 858 flow [2021-12-21 15:06:28,398 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 87.71428571428571) internal successors, (614), 7 states have internal predecessors, (614), 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) [2021-12-21 15:06:28,398 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-21 15:06:28,398 INFO L254 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] [2021-12-21 15:06:28,398 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-21 15:06:28,398 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-12-21 15:06:28,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:06:28,399 INFO L85 PathProgramCache]: Analyzing trace with hash 1156770652, now seen corresponding path program 1 times [2021-12-21 15:06:28,399 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:06:28,399 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [807091961] [2021-12-21 15:06:28,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:06:28,399 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:06:28,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:06:28,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 15:06:28,493 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:06:28,493 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [807091961] [2021-12-21 15:06:28,493 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [807091961] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:06:28,493 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 15:06:28,493 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-21 15:06:28,493 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154174585] [2021-12-21 15:06:28,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:06:28,494 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-21 15:06:28,494 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:06:28,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-21 15:06:28,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-12-21 15:06:28,495 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 105 [2021-12-21 15:06:28,496 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 135 transitions, 858 flow. Second operand has 8 states, 8 states have (on average 87.625) internal successors, (701), 8 states have internal predecessors, (701), 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) [2021-12-21 15:06:28,496 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-21 15:06:28,496 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 105 [2021-12-21 15:06:28,496 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-21 15:06:28,976 INFO L129 PetriNetUnfolder]: 1238/2619 cut-off events. [2021-12-21 15:06:28,977 INFO L130 PetriNetUnfolder]: For 21095/24378 co-relation queries the response was YES. [2021-12-21 15:06:28,988 INFO L84 FinitePrefix]: Finished finitePrefix Result has 13912 conditions, 2619 events. 1238/2619 cut-off events. For 21095/24378 co-relation queries the response was YES. Maximal size of possible extension queue 372. Compared 21712 event pairs, 1 based on Foata normal form. 261/2719 useless extension candidates. Maximal degree in co-relation 13879. Up to 1357 conditions per place. [2021-12-21 15:06:28,997 INFO L132 encePairwiseOnDemand]: 94/105 looper letters, 29 selfloop transitions, 56 changer transitions 21/186 dead transitions. [2021-12-21 15:06:28,997 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 186 transitions, 1560 flow [2021-12-21 15:06:28,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-21 15:06:28,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2021-12-21 15:06:28,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1467 transitions. [2021-12-21 15:06:28,999 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8732142857142857 [2021-12-21 15:06:28,999 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1467 transitions. [2021-12-21 15:06:28,999 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1467 transitions. [2021-12-21 15:06:29,000 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-21 15:06:29,000 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1467 transitions. [2021-12-21 15:06:29,002 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 91.6875) internal successors, (1467), 16 states have internal predecessors, (1467), 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) [2021-12-21 15:06:29,004 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 105.0) internal successors, (1785), 17 states have internal predecessors, (1785), 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) [2021-12-21 15:06:29,005 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 105.0) internal successors, (1785), 17 states have internal predecessors, (1785), 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) [2021-12-21 15:06:29,005 INFO L186 Difference]: Start difference. First operand has 154 places, 135 transitions, 858 flow. Second operand 16 states and 1467 transitions. [2021-12-21 15:06:29,005 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 186 transitions, 1560 flow [2021-12-21 15:06:29,044 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 186 transitions, 1451 flow, removed 45 selfloop flow, removed 4 redundant places. [2021-12-21 15:06:29,046 INFO L242 Difference]: Finished difference. Result has 171 places, 152 transitions, 1102 flow [2021-12-21 15:06:29,046 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=757, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=1102, PETRI_PLACES=171, PETRI_TRANSITIONS=152} [2021-12-21 15:06:29,047 INFO L334 CegarLoopForPetriNet]: 97 programPoint places, 74 predicate places. [2021-12-21 15:06:29,047 INFO L470 AbstractCegarLoop]: Abstraction has has 171 places, 152 transitions, 1102 flow [2021-12-21 15:06:29,047 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 87.625) internal successors, (701), 8 states have internal predecessors, (701), 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) [2021-12-21 15:06:29,047 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-21 15:06:29,047 INFO L254 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] [2021-12-21 15:06:29,047 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-21 15:06:29,047 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-12-21 15:06:29,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:06:29,048 INFO L85 PathProgramCache]: Analyzing trace with hash 1964548473, now seen corresponding path program 1 times [2021-12-21 15:06:29,048 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:06:29,048 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1736270581] [2021-12-21 15:06:29,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:06:29,048 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:06:29,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:06:29,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 15:06:29,101 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:06:29,101 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1736270581] [2021-12-21 15:06:29,101 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1736270581] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:06:29,101 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 15:06:29,101 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-21 15:06:29,101 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254122937] [2021-12-21 15:06:29,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:06:29,101 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 15:06:29,102 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:06:29,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 15:06:29,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-21 15:06:29,102 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 105 [2021-12-21 15:06:29,103 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 152 transitions, 1102 flow. Second operand has 7 states, 7 states have (on average 88.14285714285714) internal successors, (617), 7 states have internal predecessors, (617), 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) [2021-12-21 15:06:29,103 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-21 15:06:29,103 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 105 [2021-12-21 15:06:29,103 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-21 15:06:29,436 INFO L129 PetriNetUnfolder]: 710/2295 cut-off events. [2021-12-21 15:06:29,436 INFO L130 PetriNetUnfolder]: For 15275/15658 co-relation queries the response was YES. [2021-12-21 15:06:29,450 INFO L84 FinitePrefix]: Finished finitePrefix Result has 9930 conditions, 2295 events. 710/2295 cut-off events. For 15275/15658 co-relation queries the response was YES. Maximal size of possible extension queue 303. Compared 22296 event pairs, 21 based on Foata normal form. 2/2184 useless extension candidates. Maximal degree in co-relation 9891. Up to 592 conditions per place. [2021-12-21 15:06:29,455 INFO L132 encePairwiseOnDemand]: 98/105 looper letters, 21 selfloop transitions, 6 changer transitions 4/162 dead transitions. [2021-12-21 15:06:29,455 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 162 transitions, 1202 flow [2021-12-21 15:06:29,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-21 15:06:29,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-12-21 15:06:29,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 717 transitions. [2021-12-21 15:06:29,457 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8535714285714285 [2021-12-21 15:06:29,457 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 717 transitions. [2021-12-21 15:06:29,457 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 717 transitions. [2021-12-21 15:06:29,457 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-21 15:06:29,457 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 717 transitions. [2021-12-21 15:06:29,458 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 89.625) internal successors, (717), 8 states have internal predecessors, (717), 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) [2021-12-21 15:06:29,459 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 105.0) internal successors, (945), 9 states have internal predecessors, (945), 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) [2021-12-21 15:06:29,459 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 105.0) internal successors, (945), 9 states have internal predecessors, (945), 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) [2021-12-21 15:06:29,459 INFO L186 Difference]: Start difference. First operand has 171 places, 152 transitions, 1102 flow. Second operand 8 states and 717 transitions. [2021-12-21 15:06:29,459 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 162 transitions, 1202 flow [2021-12-21 15:06:29,597 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 162 transitions, 999 flow, removed 65 selfloop flow, removed 12 redundant places. [2021-12-21 15:06:29,599 INFO L242 Difference]: Finished difference. Result has 170 places, 152 transitions, 920 flow [2021-12-21 15:06:29,599 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=899, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=920, PETRI_PLACES=170, PETRI_TRANSITIONS=152} [2021-12-21 15:06:29,599 INFO L334 CegarLoopForPetriNet]: 97 programPoint places, 73 predicate places. [2021-12-21 15:06:29,600 INFO L470 AbstractCegarLoop]: Abstraction has has 170 places, 152 transitions, 920 flow [2021-12-21 15:06:29,600 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 88.14285714285714) internal successors, (617), 7 states have internal predecessors, (617), 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) [2021-12-21 15:06:29,600 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-21 15:06:29,600 INFO L254 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] [2021-12-21 15:06:29,600 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-21 15:06:29,600 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-12-21 15:06:29,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:06:29,601 INFO L85 PathProgramCache]: Analyzing trace with hash 720567241, now seen corresponding path program 2 times [2021-12-21 15:06:29,601 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:06:29,601 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398559807] [2021-12-21 15:06:29,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:06:29,601 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:06:29,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:06:29,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 15:06:29,672 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:06:29,672 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [398559807] [2021-12-21 15:06:29,672 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [398559807] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:06:29,672 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 15:06:29,672 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-21 15:06:29,673 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045632718] [2021-12-21 15:06:29,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:06:29,673 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-21 15:06:29,673 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:06:29,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-21 15:06:29,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-12-21 15:06:29,674 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 105 [2021-12-21 15:06:29,675 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 152 transitions, 920 flow. Second operand has 9 states, 9 states have (on average 87.55555555555556) internal successors, (788), 9 states have internal predecessors, (788), 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) [2021-12-21 15:06:29,675 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-21 15:06:29,675 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 105 [2021-12-21 15:06:29,675 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-21 15:06:30,141 INFO L129 PetriNetUnfolder]: 1173/2661 cut-off events. [2021-12-21 15:06:30,141 INFO L130 PetriNetUnfolder]: For 6973/8589 co-relation queries the response was YES. [2021-12-21 15:06:30,155 INFO L84 FinitePrefix]: Finished finitePrefix Result has 10301 conditions, 2661 events. 1173/2661 cut-off events. For 6973/8589 co-relation queries the response was YES. Maximal size of possible extension queue 405. Compared 23886 event pairs, 1 based on Foata normal form. 269/2741 useless extension candidates. Maximal degree in co-relation 10262. Up to 393 conditions per place. [2021-12-21 15:06:30,158 INFO L132 encePairwiseOnDemand]: 96/105 looper letters, 0 selfloop transitions, 0 changer transitions 166/166 dead transitions. [2021-12-21 15:06:30,158 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 166 transitions, 1215 flow [2021-12-21 15:06:30,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-12-21 15:06:30,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2021-12-21 15:06:30,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1623 transitions. [2021-12-21 15:06:30,160 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8587301587301587 [2021-12-21 15:06:30,160 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1623 transitions. [2021-12-21 15:06:30,160 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1623 transitions. [2021-12-21 15:06:30,160 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-21 15:06:30,160 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1623 transitions. [2021-12-21 15:06:30,162 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 90.16666666666667) internal successors, (1623), 18 states have internal predecessors, (1623), 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) [2021-12-21 15:06:30,164 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 105.0) internal successors, (1995), 19 states have internal predecessors, (1995), 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) [2021-12-21 15:06:30,164 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 105.0) internal successors, (1995), 19 states have internal predecessors, (1995), 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) [2021-12-21 15:06:30,164 INFO L186 Difference]: Start difference. First operand has 170 places, 152 transitions, 920 flow. Second operand 18 states and 1623 transitions. [2021-12-21 15:06:30,164 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 166 transitions, 1215 flow [2021-12-21 15:06:30,219 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 166 transitions, 1140 flow, removed 5 selfloop flow, removed 12 redundant places. [2021-12-21 15:06:30,220 INFO L242 Difference]: Finished difference. Result has 163 places, 0 transitions, 0 flow [2021-12-21 15:06:30,220 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=798, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=0, PETRI_PLACES=163, PETRI_TRANSITIONS=0} [2021-12-21 15:06:30,221 INFO L334 CegarLoopForPetriNet]: 97 programPoint places, 66 predicate places. [2021-12-21 15:06:30,221 INFO L470 AbstractCegarLoop]: Abstraction has has 163 places, 0 transitions, 0 flow [2021-12-21 15:06:30,221 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 87.55555555555556) internal successors, (788), 9 states have internal predecessors, (788), 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) [2021-12-21 15:06:30,223 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 5 remaining) [2021-12-21 15:06:30,223 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION (3 of 5 remaining) [2021-12-21 15:06:30,223 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION (2 of 5 remaining) [2021-12-21 15:06:30,223 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATION (1 of 5 remaining) [2021-12-21 15:06:30,223 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3INUSE_VIOLATION (0 of 5 remaining) [2021-12-21 15:06:30,224 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-21 15:06:30,226 INFO L732 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 15:06:30,228 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-12-21 15:06:30,228 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-21 15:06:30,230 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.12 03:06:30 BasicIcfg [2021-12-21 15:06:30,230 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-21 15:06:30,230 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-21 15:06:30,230 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-21 15:06:30,230 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-21 15:06:30,231 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 03:06:24" (3/4) ... [2021-12-21 15:06:30,233 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-12-21 15:06:30,237 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2021-12-21 15:06:30,237 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2021-12-21 15:06:30,237 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2021-12-21 15:06:30,237 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P3 [2021-12-21 15:06:30,240 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 19 nodes and edges [2021-12-21 15:06:30,240 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-12-21 15:06:30,240 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-12-21 15:06:30,240 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-12-21 15:06:30,259 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-12-21 15:06:30,259 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-21 15:06:30,259 INFO L158 Benchmark]: Toolchain (without parser) took 6711.26ms. Allocated memory was 109.1MB in the beginning and 650.1MB in the end (delta: 541.1MB). Free memory was 77.8MB in the beginning and 385.1MB in the end (delta: -307.3MB). Peak memory consumption was 232.2MB. Max. memory is 16.1GB. [2021-12-21 15:06:30,259 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 81.8MB. Free memory was 39.1MB in the beginning and 39.1MB in the end (delta: 40.1kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-21 15:06:30,259 INFO L158 Benchmark]: CACSL2BoogieTranslator took 357.38ms. Allocated memory is still 109.1MB. Free memory was 77.5MB in the beginning and 75.0MB in the end (delta: 2.6MB). Peak memory consumption was 10.0MB. Max. memory is 16.1GB. [2021-12-21 15:06:30,260 INFO L158 Benchmark]: Boogie Procedure Inliner took 27.63ms. Allocated memory is still 109.1MB. Free memory was 75.0MB in the beginning and 73.0MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-21 15:06:30,260 INFO L158 Benchmark]: Boogie Preprocessor took 29.72ms. Allocated memory is still 109.1MB. Free memory was 73.0MB in the beginning and 71.3MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-21 15:06:30,260 INFO L158 Benchmark]: RCFGBuilder took 308.63ms. Allocated memory is still 109.1MB. Free memory was 71.3MB in the beginning and 58.7MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-12-21 15:06:30,260 INFO L158 Benchmark]: TraceAbstraction took 5954.56ms. Allocated memory was 109.1MB in the beginning and 650.1MB in the end (delta: 541.1MB). Free memory was 57.9MB in the beginning and 388.3MB in the end (delta: -330.4MB). Peak memory consumption was 211.7MB. Max. memory is 16.1GB. [2021-12-21 15:06:30,260 INFO L158 Benchmark]: Witness Printer took 28.42ms. Allocated memory is still 650.1MB. Free memory was 388.3MB in the beginning and 385.1MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-21 15:06:30,261 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 81.8MB. Free memory was 39.1MB in the beginning and 39.1MB in the end (delta: 40.1kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 357.38ms. Allocated memory is still 109.1MB. Free memory was 77.5MB in the beginning and 75.0MB in the end (delta: 2.6MB). Peak memory consumption was 10.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 27.63ms. Allocated memory is still 109.1MB. Free memory was 75.0MB in the beginning and 73.0MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 29.72ms. Allocated memory is still 109.1MB. Free memory was 73.0MB in the beginning and 71.3MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 308.63ms. Allocated memory is still 109.1MB. Free memory was 71.3MB in the beginning and 58.7MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 5954.56ms. Allocated memory was 109.1MB in the beginning and 650.1MB in the end (delta: 541.1MB). Free memory was 57.9MB in the beginning and 388.3MB in the end (delta: -330.4MB). Peak memory consumption was 211.7MB. Max. memory is 16.1GB. * Witness Printer took 28.42ms. Allocated memory is still 650.1MB. Free memory was 388.3MB in the beginning and 385.1MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 9 procedures, 134 locations, 5 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 5.9s, OverallIterations: 11, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 4.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 617 SdHoareTripleChecker+Valid, 0.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 617 mSDsluCounter, 858 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 859 mSDsCounter, 183 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 900 IncrementalHoareTripleChecker+Invalid, 1083 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 183 mSolverCounterUnsat, 195 mSDtfsCounter, 900 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 170 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 147 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 300 ImplicationChecksByTransitivity, 1.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1102occurred in iteration=9, InterpolantAutomatonStates: 139, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 746 NumberOfCodeBlocks, 746 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 735 ConstructedInterpolants, 0 QuantifiedInterpolants, 2987 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 11 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-12-21 15:06:30,285 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE