./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/goblint-regression/13-privatized_27-multiple-protecting2_true.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e19ca921 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/goblint-regression/13-privatized_27-multiple-protecting2_true.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 2d0b9c4fc8b0005fb250fdf1ff8e25835b95e676b1936e4f5fe1cf72245ee5f5 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-e19ca92 [2021-12-22 13:36:33,413 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-22 13:36:33,414 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-22 13:36:33,449 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-22 13:36:33,455 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-22 13:36:33,456 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-22 13:36:33,457 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-22 13:36:33,458 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-22 13:36:33,459 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-22 13:36:33,460 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-22 13:36:33,461 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-22 13:36:33,461 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-22 13:36:33,466 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-22 13:36:33,467 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-22 13:36:33,469 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-22 13:36:33,471 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-22 13:36:33,472 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-22 13:36:33,474 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-22 13:36:33,475 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-22 13:36:33,477 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-22 13:36:33,480 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-22 13:36:33,481 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-22 13:36:33,483 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-22 13:36:33,484 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-22 13:36:33,485 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-22 13:36:33,488 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-22 13:36:33,488 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-22 13:36:33,489 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-22 13:36:33,489 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-22 13:36:33,490 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-22 13:36:33,492 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-22 13:36:33,492 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-22 13:36:33,493 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-22 13:36:33,493 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-22 13:36:33,494 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-22 13:36:33,495 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-22 13:36:33,496 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-22 13:36:33,496 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-22 13:36:33,496 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-22 13:36:33,497 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-22 13:36:33,497 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-22 13:36:33,498 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-22 13:36:33,513 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-22 13:36:33,514 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-22 13:36:33,514 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-22 13:36:33,514 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-22 13:36:33,515 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-22 13:36:33,515 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-22 13:36:33,515 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-22 13:36:33,516 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-22 13:36:33,516 INFO L138 SettingsManager]: * Use SBE=true [2021-12-22 13:36:33,516 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-22 13:36:33,517 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-22 13:36:33,517 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-22 13:36:33,517 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-22 13:36:33,517 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-22 13:36:33,517 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-22 13:36:33,517 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-22 13:36:33,517 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-22 13:36:33,518 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-22 13:36:33,518 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-22 13:36:33,518 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-22 13:36:33,518 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-22 13:36:33,518 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-22 13:36:33,518 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-22 13:36:33,518 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-22 13:36:33,519 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 13:36:33,519 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-22 13:36:33,519 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-22 13:36:33,520 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-22 13:36:33,520 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-22 13:36:33,520 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-22 13:36:33,520 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-22 13:36:33,520 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-22 13:36:33,521 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-22 13:36:33,521 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-22 13:36:33,521 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2d0b9c4fc8b0005fb250fdf1ff8e25835b95e676b1936e4f5fe1cf72245ee5f5 [2021-12-22 13:36:33,717 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-22 13:36:33,733 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-22 13:36:33,736 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-22 13:36:33,736 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-22 13:36:33,737 INFO L275 PluginConnector]: CDTParser initialized [2021-12-22 13:36:33,738 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/goblint-regression/13-privatized_27-multiple-protecting2_true.i [2021-12-22 13:36:33,782 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/52918717c/3c446498ba0a4ba5aa4a59e01ae83667/FLAG9eb94227b [2021-12-22 13:36:34,224 INFO L306 CDTParser]: Found 1 translation units. [2021-12-22 13:36:34,225 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/13-privatized_27-multiple-protecting2_true.i [2021-12-22 13:36:34,240 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/52918717c/3c446498ba0a4ba5aa4a59e01ae83667/FLAG9eb94227b [2021-12-22 13:36:34,256 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/52918717c/3c446498ba0a4ba5aa4a59e01ae83667 [2021-12-22 13:36:34,259 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-22 13:36:34,260 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-22 13:36:34,262 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-22 13:36:34,263 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-22 13:36:34,265 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-22 13:36:34,265 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 01:36:34" (1/1) ... [2021-12-22 13:36:34,266 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@23d99f80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:36:34, skipping insertion in model container [2021-12-22 13:36:34,266 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 01:36:34" (1/1) ... [2021-12-22 13:36:34,271 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-22 13:36:34,310 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-22 13:36:34,484 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/goblint-regression/13-privatized_27-multiple-protecting2_true.i[1097,1110] [2021-12-22 13:36:34,618 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 13:36:34,630 INFO L203 MainTranslator]: Completed pre-run [2021-12-22 13:36:34,641 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/goblint-regression/13-privatized_27-multiple-protecting2_true.i[1097,1110] [2021-12-22 13:36:34,667 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 13:36:34,692 INFO L208 MainTranslator]: Completed translation [2021-12-22 13:36:34,693 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:36:34 WrapperNode [2021-12-22 13:36:34,693 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-22 13:36:34,694 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-22 13:36:34,694 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-22 13:36:34,694 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-22 13:36:34,709 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:36:34" (1/1) ... [2021-12-22 13:36:34,731 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:36:34" (1/1) ... [2021-12-22 13:36:34,755 INFO L137 Inliner]: procedures = 163, calls = 52, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 104 [2021-12-22 13:36:34,756 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-22 13:36:34,756 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-22 13:36:34,756 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-22 13:36:34,757 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-22 13:36:34,762 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:36:34" (1/1) ... [2021-12-22 13:36:34,762 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:36:34" (1/1) ... [2021-12-22 13:36:34,774 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:36:34" (1/1) ... [2021-12-22 13:36:34,774 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:36:34" (1/1) ... [2021-12-22 13:36:34,781 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:36:34" (1/1) ... [2021-12-22 13:36:34,786 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:36:34" (1/1) ... [2021-12-22 13:36:34,788 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:36:34" (1/1) ... [2021-12-22 13:36:34,795 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-22 13:36:34,800 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-22 13:36:34,801 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-22 13:36:34,801 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-22 13:36:34,802 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:36:34" (1/1) ... [2021-12-22 13:36:34,806 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 13:36:34,815 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 13:36:34,826 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) [2021-12-22 13:36:34,841 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 [2021-12-22 13:36:34,857 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-22 13:36:34,857 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2021-12-22 13:36:34,857 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2021-12-22 13:36:34,858 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-22 13:36:34,858 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2021-12-22 13:36:34,858 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-22 13:36:34,858 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-22 13:36:34,858 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2021-12-22 13:36:34,858 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2021-12-22 13:36:34,858 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-22 13:36:34,858 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-22 13:36:34,859 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-22 13:36:34,859 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-22 13:36:34,860 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-12-22 13:36:34,951 INFO L234 CfgBuilder]: Building ICFG [2021-12-22 13:36:34,952 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-22 13:36:35,132 INFO L275 CfgBuilder]: Performing block encoding [2021-12-22 13:36:35,140 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-22 13:36:35,140 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-22 13:36:35,142 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 01:36:35 BoogieIcfgContainer [2021-12-22 13:36:35,142 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-22 13:36:35,143 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-22 13:36:35,144 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-22 13:36:35,146 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-22 13:36:35,146 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 01:36:34" (1/3) ... [2021-12-22 13:36:35,147 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b570a9d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 01:36:35, skipping insertion in model container [2021-12-22 13:36:35,152 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:36:34" (2/3) ... [2021-12-22 13:36:35,152 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b570a9d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 01:36:35, skipping insertion in model container [2021-12-22 13:36:35,153 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 01:36:35" (3/3) ... [2021-12-22 13:36:35,155 INFO L111 eAbstractionObserver]: Analyzing ICFG 13-privatized_27-multiple-protecting2_true.i [2021-12-22 13:36:35,159 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-12-22 13:36:35,159 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-22 13:36:35,159 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2021-12-22 13:36:35,159 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-12-22 13:36:35,192 WARN L322 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:36:35,192 WARN L322 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:36:35,192 WARN L322 ript$VariableManager]: TermVariabe t2_funThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:36:35,192 WARN L322 ript$VariableManager]: TermVariabe t2_funThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:36:35,192 WARN L322 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:36:35,192 WARN L322 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:36:35,192 WARN L322 ript$VariableManager]: TermVariabe t2_funThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:36:35,193 WARN L322 ript$VariableManager]: TermVariabe t2_funThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:36:35,193 WARN L322 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork0_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:36:35,193 WARN L322 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork0_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:36:35,193 WARN L322 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork0_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:36:35,193 WARN L322 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork0_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:36:35,193 WARN L322 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork0_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:36:35,193 WARN L322 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork0_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:36:35,194 WARN L322 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork0_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:36:35,194 WARN L322 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork0_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:36:35,195 WARN L322 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork0_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:36:35,195 WARN L322 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork0_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:36:35,195 WARN L322 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork0_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:36:35,196 WARN L322 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork0_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:36:35,197 WARN L322 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork0_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:36:35,197 WARN L322 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork0_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:36:35,197 WARN L322 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork0_#t~nondet9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:36:35,198 WARN L322 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork0_#t~nondet9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:36:35,198 WARN L322 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork0_#t~nondet9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:36:35,198 WARN L322 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork0_#t~nondet9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:36:35,199 WARN L322 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork0_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:36:35,199 WARN L322 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork0_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:36:35,199 WARN L322 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork0_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:36:35,199 WARN L322 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork0_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:36:35,200 WARN L322 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork0_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:36:35,200 WARN L322 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork0_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:36:35,200 WARN L322 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:36:35,200 WARN L322 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:36:35,200 WARN L322 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:36:35,200 WARN L322 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:36:35,203 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:36:35,203 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:36:35,203 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:36:35,203 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:36:35,203 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:36:35,204 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:36:35,204 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:36:35,204 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:36:35,204 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork1_#t~nondet1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:36:35,204 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork1_#t~nondet1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:36:35,205 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork1_#t~nondet1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:36:35,205 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork1_#t~nondet1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:36:35,205 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork1_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:36:35,205 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork1_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:36:35,206 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork1_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:36:35,206 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork1_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:36:35,206 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:36:35,206 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:36:35,207 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:36:35,207 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:36:35,207 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:36:35,207 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:36:35,208 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork1_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:36:35,208 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork1_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:36:35,208 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork1_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:36:35,209 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork1_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:36:35,209 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:36:35,209 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:36:35,210 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:36:35,210 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:36:35,210 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:36:35,210 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:36:35,211 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:36:35,211 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:36:35,212 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:36:35,212 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:36:35,215 WARN L322 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork0_#t~nondet9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:36:35,215 WARN L322 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork0_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:36:35,215 WARN L322 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork0_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:36:35,215 WARN L322 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:36:35,216 WARN L322 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork0_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:36:35,216 WARN L322 ript$VariableManager]: TermVariabe t2_funThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:36:35,217 WARN L322 ript$VariableManager]: TermVariabe t2_funThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:36:35,217 WARN L322 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:36:35,217 WARN L322 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork0_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:36:35,220 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:36:35,222 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork1_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:36:35,222 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:36:35,223 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:36:35,223 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:36:35,224 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:36:35,224 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork1_#t~nondet1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:36:35,224 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork1_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:36:35,224 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:36:35,230 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-12-22 13:36:35,277 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-22 13:36:35,283 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 [2021-12-22 13:36:35,286 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-12-22 13:36:35,300 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 162 places, 159 transitions, 334 flow [2021-12-22 13:36:35,366 INFO L129 PetriNetUnfolder]: 4/157 cut-off events. [2021-12-22 13:36:35,366 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-12-22 13:36:35,369 INFO L84 FinitePrefix]: Finished finitePrefix Result has 166 conditions, 157 events. 4/157 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 136 event pairs, 0 based on Foata normal form. 0/149 useless extension candidates. Maximal degree in co-relation 105. Up to 2 conditions per place. [2021-12-22 13:36:35,369 INFO L82 GeneralOperation]: Start removeDead. Operand has 162 places, 159 transitions, 334 flow [2021-12-22 13:36:35,375 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 141 places, 137 transitions, 280 flow [2021-12-22 13:36:35,396 INFO L129 PetriNetUnfolder]: 1/91 cut-off events. [2021-12-22 13:36:35,396 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-12-22 13:36:35,396 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-22 13:36:35,397 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] [2021-12-22 13:36:35,397 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-12-22 13:36:35,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:36:35,401 INFO L85 PathProgramCache]: Analyzing trace with hash 811554038, now seen corresponding path program 1 times [2021-12-22 13:36:35,407 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:36:35,408 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1390097610] [2021-12-22 13:36:35,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:36:35,408 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:36:35,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:36:35,728 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 13:36:35,729 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:36:35,729 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1390097610] [2021-12-22 13:36:35,729 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1390097610] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:36:35,730 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:36:35,730 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-22 13:36:35,731 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456570968] [2021-12-22 13:36:35,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:36:35,738 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-22 13:36:35,738 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:36:35,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-22 13:36:35,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-22 13:36:35,764 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 122 out of 159 [2021-12-22 13:36:35,776 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 137 transitions, 280 flow. Second operand has 5 states, 5 states have (on average 123.4) internal successors, (617), 5 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) [2021-12-22 13:36:35,777 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-22 13:36:35,777 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 122 of 159 [2021-12-22 13:36:35,778 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-22 13:36:35,990 INFO L129 PetriNetUnfolder]: 93/563 cut-off events. [2021-12-22 13:36:35,991 INFO L130 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2021-12-22 13:36:35,996 INFO L84 FinitePrefix]: Finished finitePrefix Result has 805 conditions, 563 events. 93/563 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 2785 event pairs, 24 based on Foata normal form. 16/563 useless extension candidates. Maximal degree in co-relation 756. Up to 78 conditions per place. [2021-12-22 13:36:35,999 INFO L132 encePairwiseOnDemand]: 138/159 looper letters, 37 selfloop transitions, 23 changer transitions 5/170 dead transitions. [2021-12-22 13:36:36,000 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 170 transitions, 479 flow [2021-12-22 13:36:36,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-22 13:36:36,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-12-22 13:36:36,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1173 transitions. [2021-12-22 13:36:36,015 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8197064989517819 [2021-12-22 13:36:36,016 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1173 transitions. [2021-12-22 13:36:36,016 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1173 transitions. [2021-12-22 13:36:36,019 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-22 13:36:36,021 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1173 transitions. [2021-12-22 13:36:36,025 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 130.33333333333334) internal successors, (1173), 9 states have internal predecessors, (1173), 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) [2021-12-22 13:36:36,033 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 159.0) internal successors, (1590), 10 states have internal predecessors, (1590), 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) [2021-12-22 13:36:36,034 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 159.0) internal successors, (1590), 10 states have internal predecessors, (1590), 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) [2021-12-22 13:36:36,035 INFO L186 Difference]: Start difference. First operand has 141 places, 137 transitions, 280 flow. Second operand 9 states and 1173 transitions. [2021-12-22 13:36:36,036 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 170 transitions, 479 flow [2021-12-22 13:36:36,039 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 170 transitions, 476 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-12-22 13:36:36,041 INFO L242 Difference]: Finished difference. Result has 151 places, 148 transitions, 415 flow [2021-12-22 13:36:36,043 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=159, PETRI_DIFFERENCE_MINUEND_FLOW=266, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=415, PETRI_PLACES=151, PETRI_TRANSITIONS=148} [2021-12-22 13:36:36,045 INFO L334 CegarLoopForPetriNet]: 141 programPoint places, 10 predicate places. [2021-12-22 13:36:36,046 INFO L470 AbstractCegarLoop]: Abstraction has has 151 places, 148 transitions, 415 flow [2021-12-22 13:36:36,046 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 123.4) internal successors, (617), 5 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) [2021-12-22 13:36:36,046 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-22 13:36:36,047 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] [2021-12-22 13:36:36,047 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-22 13:36:36,047 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-12-22 13:36:36,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:36:36,048 INFO L85 PathProgramCache]: Analyzing trace with hash 235319527, now seen corresponding path program 1 times [2021-12-22 13:36:36,048 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:36:36,048 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233046754] [2021-12-22 13:36:36,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:36:36,048 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:36:36,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:36:36,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 13:36:36,149 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:36:36,149 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233046754] [2021-12-22 13:36:36,149 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1233046754] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:36:36,150 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:36:36,150 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-22 13:36:36,150 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297767895] [2021-12-22 13:36:36,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:36:36,152 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-22 13:36:36,152 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:36:36,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-22 13:36:36,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-22 13:36:36,155 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 159 [2021-12-22 13:36:36,156 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 148 transitions, 415 flow. Second operand has 6 states, 6 states have (on average 114.0) internal successors, (684), 6 states have internal predecessors, (684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:36:36,157 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-22 13:36:36,157 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 159 [2021-12-22 13:36:36,157 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-22 13:36:36,483 INFO L129 PetriNetUnfolder]: 370/1820 cut-off events. [2021-12-22 13:36:36,483 INFO L130 PetriNetUnfolder]: For 150/150 co-relation queries the response was YES. [2021-12-22 13:36:36,489 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3125 conditions, 1820 events. 370/1820 cut-off events. For 150/150 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 13606 event pairs, 95 based on Foata normal form. 91/1889 useless extension candidates. Maximal degree in co-relation 3058. Up to 551 conditions per place. [2021-12-22 13:36:36,495 INFO L132 encePairwiseOnDemand]: 152/159 looper letters, 50 selfloop transitions, 7 changer transitions 0/169 dead transitions. [2021-12-22 13:36:36,495 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 169 transitions, 573 flow [2021-12-22 13:36:36,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-22 13:36:36,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-12-22 13:36:36,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 614 transitions. [2021-12-22 13:36:36,497 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7723270440251573 [2021-12-22 13:36:36,497 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 614 transitions. [2021-12-22 13:36:36,497 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 614 transitions. [2021-12-22 13:36:36,497 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-22 13:36:36,498 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 614 transitions. [2021-12-22 13:36:36,499 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 122.8) internal successors, (614), 5 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) [2021-12-22 13:36:36,500 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 159.0) internal successors, (954), 6 states have internal predecessors, (954), 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) [2021-12-22 13:36:36,501 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 159.0) internal successors, (954), 6 states have internal predecessors, (954), 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) [2021-12-22 13:36:36,501 INFO L186 Difference]: Start difference. First operand has 151 places, 148 transitions, 415 flow. Second operand 5 states and 614 transitions. [2021-12-22 13:36:36,501 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 169 transitions, 573 flow [2021-12-22 13:36:36,510 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 169 transitions, 556 flow, removed 4 selfloop flow, removed 2 redundant places. [2021-12-22 13:36:36,514 INFO L242 Difference]: Finished difference. Result has 154 places, 151 transitions, 429 flow [2021-12-22 13:36:36,515 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=159, PETRI_DIFFERENCE_MINUEND_FLOW=398, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=429, PETRI_PLACES=154, PETRI_TRANSITIONS=151} [2021-12-22 13:36:36,516 INFO L334 CegarLoopForPetriNet]: 141 programPoint places, 13 predicate places. [2021-12-22 13:36:36,516 INFO L470 AbstractCegarLoop]: Abstraction has has 154 places, 151 transitions, 429 flow [2021-12-22 13:36:36,516 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 114.0) internal successors, (684), 6 states have internal predecessors, (684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:36:36,516 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-22 13:36:36,517 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, 1, 1] [2021-12-22 13:36:36,517 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-22 13:36:36,518 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-12-22 13:36:36,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:36:36,521 INFO L85 PathProgramCache]: Analyzing trace with hash 1657823486, now seen corresponding path program 1 times [2021-12-22 13:36:36,521 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:36:36,521 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1959827126] [2021-12-22 13:36:36,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:36:36,522 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:36:36,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:36:36,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 13:36:36,665 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:36:36,666 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1959827126] [2021-12-22 13:36:36,666 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1959827126] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:36:36,667 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:36:36,667 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-22 13:36:36,667 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519388528] [2021-12-22 13:36:36,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:36:36,668 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-22 13:36:36,668 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:36:36,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-22 13:36:36,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-22 13:36:36,671 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 159 [2021-12-22 13:36:36,672 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 151 transitions, 429 flow. Second operand has 8 states, 8 states have (on average 121.625) internal successors, (973), 8 states have internal predecessors, (973), 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) [2021-12-22 13:36:36,672 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-22 13:36:36,673 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 159 [2021-12-22 13:36:36,673 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-22 13:36:37,193 INFO L129 PetriNetUnfolder]: 215/1123 cut-off events. [2021-12-22 13:36:37,194 INFO L130 PetriNetUnfolder]: For 240/240 co-relation queries the response was YES. [2021-12-22 13:36:37,197 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2077 conditions, 1123 events. 215/1123 cut-off events. For 240/240 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 7290 event pairs, 9 based on Foata normal form. 16/1128 useless extension candidates. Maximal degree in co-relation 2019. Up to 69 conditions per place. [2021-12-22 13:36:37,200 INFO L132 encePairwiseOnDemand]: 136/159 looper letters, 95 selfloop transitions, 103 changer transitions 7/311 dead transitions. [2021-12-22 13:36:37,201 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 311 transitions, 1467 flow [2021-12-22 13:36:37,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-12-22 13:36:37,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2021-12-22 13:36:37,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 3310 transitions. [2021-12-22 13:36:37,207 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8006773101112724 [2021-12-22 13:36:37,207 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 3310 transitions. [2021-12-22 13:36:37,207 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 3310 transitions. [2021-12-22 13:36:37,208 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-22 13:36:37,208 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 3310 transitions. [2021-12-22 13:36:37,214 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 127.3076923076923) internal successors, (3310), 26 states have internal predecessors, (3310), 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) [2021-12-22 13:36:37,222 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 159.0) internal successors, (4293), 27 states have internal predecessors, (4293), 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) [2021-12-22 13:36:37,223 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 159.0) internal successors, (4293), 27 states have internal predecessors, (4293), 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) [2021-12-22 13:36:37,223 INFO L186 Difference]: Start difference. First operand has 154 places, 151 transitions, 429 flow. Second operand 26 states and 3310 transitions. [2021-12-22 13:36:37,223 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 311 transitions, 1467 flow [2021-12-22 13:36:37,227 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 311 transitions, 1464 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-12-22 13:36:37,232 INFO L242 Difference]: Finished difference. Result has 185 places, 232 transitions, 1130 flow [2021-12-22 13:36:37,232 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=159, PETRI_DIFFERENCE_MINUEND_FLOW=426, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=1130, PETRI_PLACES=185, PETRI_TRANSITIONS=232} [2021-12-22 13:36:37,234 INFO L334 CegarLoopForPetriNet]: 141 programPoint places, 44 predicate places. [2021-12-22 13:36:37,234 INFO L470 AbstractCegarLoop]: Abstraction has has 185 places, 232 transitions, 1130 flow [2021-12-22 13:36:37,234 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 121.625) internal successors, (973), 8 states have internal predecessors, (973), 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) [2021-12-22 13:36:37,235 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-22 13:36:37,235 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, 1, 1, 1, 1, 1, 1] [2021-12-22 13:36:37,235 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-22 13:36:37,235 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-12-22 13:36:37,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:36:37,236 INFO L85 PathProgramCache]: Analyzing trace with hash 1808695242, now seen corresponding path program 1 times [2021-12-22 13:36:37,236 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:36:37,237 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027568666] [2021-12-22 13:36:37,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:36:37,237 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:36:37,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:36:37,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 13:36:37,335 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:36:37,335 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027568666] [2021-12-22 13:36:37,335 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2027568666] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:36:37,335 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:36:37,335 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-22 13:36:37,335 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788960615] [2021-12-22 13:36:37,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:36:37,336 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-22 13:36:37,336 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:36:37,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-22 13:36:37,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-22 13:36:37,337 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 122 out of 159 [2021-12-22 13:36:37,338 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 232 transitions, 1130 flow. Second operand has 5 states, 5 states have (on average 125.0) internal successors, (625), 5 states have internal predecessors, (625), 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) [2021-12-22 13:36:37,338 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-22 13:36:37,338 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 122 of 159 [2021-12-22 13:36:37,338 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-22 13:36:37,534 INFO L129 PetriNetUnfolder]: 268/1592 cut-off events. [2021-12-22 13:36:37,535 INFO L130 PetriNetUnfolder]: For 1417/1463 co-relation queries the response was YES. [2021-12-22 13:36:37,541 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3482 conditions, 1592 events. 268/1592 cut-off events. For 1417/1463 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 12265 event pairs, 49 based on Foata normal form. 21/1597 useless extension candidates. Maximal degree in co-relation 3416. Up to 203 conditions per place. [2021-12-22 13:36:37,546 INFO L132 encePairwiseOnDemand]: 147/159 looper letters, 81 selfloop transitions, 76 changer transitions 5/288 dead transitions. [2021-12-22 13:36:37,546 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 288 transitions, 1811 flow [2021-12-22 13:36:37,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-22 13:36:37,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-12-22 13:36:37,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1158 transitions. [2021-12-22 13:36:37,549 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8092243186582809 [2021-12-22 13:36:37,549 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1158 transitions. [2021-12-22 13:36:37,549 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1158 transitions. [2021-12-22 13:36:37,549 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-22 13:36:37,550 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1158 transitions. [2021-12-22 13:36:37,551 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 128.66666666666666) internal successors, (1158), 9 states have internal predecessors, (1158), 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) [2021-12-22 13:36:37,553 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 159.0) internal successors, (1590), 10 states have internal predecessors, (1590), 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) [2021-12-22 13:36:37,554 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 159.0) internal successors, (1590), 10 states have internal predecessors, (1590), 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) [2021-12-22 13:36:37,554 INFO L186 Difference]: Start difference. First operand has 185 places, 232 transitions, 1130 flow. Second operand 9 states and 1158 transitions. [2021-12-22 13:36:37,554 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 288 transitions, 1811 flow [2021-12-22 13:36:37,564 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 288 transitions, 1756 flow, removed 11 selfloop flow, removed 5 redundant places. [2021-12-22 13:36:37,567 INFO L242 Difference]: Finished difference. Result has 192 places, 263 transitions, 1547 flow [2021-12-22 13:36:37,568 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=159, PETRI_DIFFERENCE_MINUEND_FLOW=1083, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=232, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1547, PETRI_PLACES=192, PETRI_TRANSITIONS=263} [2021-12-22 13:36:37,568 INFO L334 CegarLoopForPetriNet]: 141 programPoint places, 51 predicate places. [2021-12-22 13:36:37,568 INFO L470 AbstractCegarLoop]: Abstraction has has 192 places, 263 transitions, 1547 flow [2021-12-22 13:36:37,569 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 125.0) internal successors, (625), 5 states have internal predecessors, (625), 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) [2021-12-22 13:36:37,569 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-22 13:36:37,569 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 13:36:37,569 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-22 13:36:37,569 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-12-22 13:36:37,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:36:37,570 INFO L85 PathProgramCache]: Analyzing trace with hash 569035373, now seen corresponding path program 1 times [2021-12-22 13:36:37,570 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:36:37,570 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1517988293] [2021-12-22 13:36:37,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:36:37,571 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:36:37,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:36:37,637 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 13:36:37,638 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:36:37,638 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1517988293] [2021-12-22 13:36:37,638 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1517988293] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:36:37,638 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:36:37,638 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-22 13:36:37,638 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011393090] [2021-12-22 13:36:37,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:36:37,639 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-22 13:36:37,639 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:36:37,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-22 13:36:37,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-22 13:36:37,640 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 159 [2021-12-22 13:36:37,641 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 263 transitions, 1547 flow. Second operand has 6 states, 6 states have (on average 115.0) internal successors, (690), 6 states have internal predecessors, (690), 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) [2021-12-22 13:36:37,641 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-22 13:36:37,641 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 159 [2021-12-22 13:36:37,641 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-22 13:36:37,883 INFO L129 PetriNetUnfolder]: 239/1751 cut-off events. [2021-12-22 13:36:37,883 INFO L130 PetriNetUnfolder]: For 1004/1006 co-relation queries the response was YES. [2021-12-22 13:36:37,888 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3651 conditions, 1751 events. 239/1751 cut-off events. For 1004/1006 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 13112 event pairs, 96 based on Foata normal form. 130/1873 useless extension candidates. Maximal degree in co-relation 3569. Up to 357 conditions per place. [2021-12-22 13:36:37,891 INFO L132 encePairwiseOnDemand]: 141/159 looper letters, 33 selfloop transitions, 18 changer transitions 2/197 dead transitions. [2021-12-22 13:36:37,892 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 197 transitions, 979 flow [2021-12-22 13:36:37,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-22 13:36:37,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-12-22 13:36:37,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 611 transitions. [2021-12-22 13:36:37,893 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7685534591194969 [2021-12-22 13:36:37,894 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 611 transitions. [2021-12-22 13:36:37,894 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 611 transitions. [2021-12-22 13:36:37,894 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-22 13:36:37,894 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 611 transitions. [2021-12-22 13:36:37,895 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 122.2) internal successors, (611), 5 states have internal predecessors, (611), 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) [2021-12-22 13:36:37,896 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 159.0) internal successors, (954), 6 states have internal predecessors, (954), 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) [2021-12-22 13:36:37,897 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 159.0) internal successors, (954), 6 states have internal predecessors, (954), 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) [2021-12-22 13:36:37,897 INFO L186 Difference]: Start difference. First operand has 192 places, 263 transitions, 1547 flow. Second operand 5 states and 611 transitions. [2021-12-22 13:36:37,897 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 197 transitions, 979 flow [2021-12-22 13:36:37,903 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 197 transitions, 945 flow, removed 13 selfloop flow, removed 5 redundant places. [2021-12-22 13:36:37,906 INFO L242 Difference]: Finished difference. Result has 185 places, 188 transitions, 867 flow [2021-12-22 13:36:37,906 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=159, PETRI_DIFFERENCE_MINUEND_FLOW=790, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=165, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=867, PETRI_PLACES=185, PETRI_TRANSITIONS=188} [2021-12-22 13:36:37,907 INFO L334 CegarLoopForPetriNet]: 141 programPoint places, 44 predicate places. [2021-12-22 13:36:37,907 INFO L470 AbstractCegarLoop]: Abstraction has has 185 places, 188 transitions, 867 flow [2021-12-22 13:36:37,907 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 115.0) internal successors, (690), 6 states have internal predecessors, (690), 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) [2021-12-22 13:36:37,907 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-22 13:36:37,908 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 13:36:37,908 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-22 13:36:37,908 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-12-22 13:36:37,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:36:37,908 INFO L85 PathProgramCache]: Analyzing trace with hash 530066106, now seen corresponding path program 1 times [2021-12-22 13:36:37,909 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:36:37,909 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1181281841] [2021-12-22 13:36:37,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:36:37,909 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:36:37,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:36:38,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 13:36:38,079 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:36:38,079 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1181281841] [2021-12-22 13:36:38,079 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1181281841] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:36:38,080 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:36:38,080 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-22 13:36:38,080 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114516713] [2021-12-22 13:36:38,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:36:38,081 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 13:36:38,081 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:36:38,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 13:36:38,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-12-22 13:36:38,083 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 159 [2021-12-22 13:36:38,084 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 188 transitions, 867 flow. Second operand has 7 states, 7 states have (on average 109.42857142857143) internal successors, (766), 7 states have internal predecessors, (766), 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) [2021-12-22 13:36:38,084 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-22 13:36:38,085 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 159 [2021-12-22 13:36:38,085 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-22 13:36:38,284 INFO L129 PetriNetUnfolder]: 117/900 cut-off events. [2021-12-22 13:36:38,284 INFO L130 PetriNetUnfolder]: For 873/891 co-relation queries the response was YES. [2021-12-22 13:36:38,286 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2234 conditions, 900 events. 117/900 cut-off events. For 873/891 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 5434 event pairs, 31 based on Foata normal form. 36/917 useless extension candidates. Maximal degree in co-relation 2147. Up to 307 conditions per place. [2021-12-22 13:36:38,288 INFO L132 encePairwiseOnDemand]: 153/159 looper letters, 46 selfloop transitions, 8 changer transitions 12/159 dead transitions. [2021-12-22 13:36:38,288 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 159 transitions, 802 flow [2021-12-22 13:36:38,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-22 13:36:38,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-12-22 13:36:38,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 681 transitions. [2021-12-22 13:36:38,291 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7138364779874213 [2021-12-22 13:36:38,291 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 681 transitions. [2021-12-22 13:36:38,291 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 681 transitions. [2021-12-22 13:36:38,291 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-22 13:36:38,291 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 681 transitions. [2021-12-22 13:36:38,292 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 113.5) internal successors, (681), 6 states have internal predecessors, (681), 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) [2021-12-22 13:36:38,294 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 159.0) internal successors, (1113), 7 states have internal predecessors, (1113), 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) [2021-12-22 13:36:38,294 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 159.0) internal successors, (1113), 7 states have internal predecessors, (1113), 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) [2021-12-22 13:36:38,295 INFO L186 Difference]: Start difference. First operand has 185 places, 188 transitions, 867 flow. Second operand 6 states and 681 transitions. [2021-12-22 13:36:38,295 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 159 transitions, 802 flow [2021-12-22 13:36:38,299 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 159 transitions, 695 flow, removed 6 selfloop flow, removed 14 redundant places. [2021-12-22 13:36:38,300 INFO L242 Difference]: Finished difference. Result has 156 places, 139 transitions, 499 flow [2021-12-22 13:36:38,301 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=159, PETRI_DIFFERENCE_MINUEND_FLOW=539, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=499, PETRI_PLACES=156, PETRI_TRANSITIONS=139} [2021-12-22 13:36:38,302 INFO L334 CegarLoopForPetriNet]: 141 programPoint places, 15 predicate places. [2021-12-22 13:36:38,303 INFO L470 AbstractCegarLoop]: Abstraction has has 156 places, 139 transitions, 499 flow [2021-12-22 13:36:38,304 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 109.42857142857143) internal successors, (766), 7 states have internal predecessors, (766), 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) [2021-12-22 13:36:38,304 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-22 13:36:38,304 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 13:36:38,304 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-22 13:36:38,304 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-12-22 13:36:38,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:36:38,305 INFO L85 PathProgramCache]: Analyzing trace with hash -1228426076, now seen corresponding path program 1 times [2021-12-22 13:36:38,305 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:36:38,305 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526507566] [2021-12-22 13:36:38,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:36:38,306 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:36:38,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:36:38,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 13:36:38,481 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:36:38,481 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1526507566] [2021-12-22 13:36:38,481 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1526507566] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:36:38,482 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:36:38,482 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-22 13:36:38,484 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664721121] [2021-12-22 13:36:38,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:36:38,485 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-22 13:36:38,485 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:36:38,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-22 13:36:38,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-12-22 13:36:38,487 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 159 [2021-12-22 13:36:38,488 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 139 transitions, 499 flow. Second operand has 8 states, 8 states have (on average 108.75) internal successors, (870), 8 states have internal predecessors, (870), 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) [2021-12-22 13:36:38,488 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-22 13:36:38,488 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 159 [2021-12-22 13:36:38,488 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-22 13:36:38,641 INFO L129 PetriNetUnfolder]: 61/587 cut-off events. [2021-12-22 13:36:38,641 INFO L130 PetriNetUnfolder]: For 372/384 co-relation queries the response was YES. [2021-12-22 13:36:38,642 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1303 conditions, 587 events. 61/587 cut-off events. For 372/384 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 2993 event pairs, 20 based on Foata normal form. 22/603 useless extension candidates. Maximal degree in co-relation 1281. Up to 135 conditions per place. [2021-12-22 13:36:38,644 INFO L132 encePairwiseOnDemand]: 153/159 looper letters, 48 selfloop transitions, 7 changer transitions 6/148 dead transitions. [2021-12-22 13:36:38,644 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 148 transitions, 662 flow [2021-12-22 13:36:38,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-22 13:36:38,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-12-22 13:36:38,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 680 transitions. [2021-12-22 13:36:38,646 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7127882599580713 [2021-12-22 13:36:38,646 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 680 transitions. [2021-12-22 13:36:38,646 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 680 transitions. [2021-12-22 13:36:38,647 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-22 13:36:38,647 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 680 transitions. [2021-12-22 13:36:38,648 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 113.33333333333333) internal successors, (680), 6 states have internal predecessors, (680), 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) [2021-12-22 13:36:38,649 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 159.0) internal successors, (1113), 7 states have internal predecessors, (1113), 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) [2021-12-22 13:36:38,650 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 159.0) internal successors, (1113), 7 states have internal predecessors, (1113), 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) [2021-12-22 13:36:38,650 INFO L186 Difference]: Start difference. First operand has 156 places, 139 transitions, 499 flow. Second operand 6 states and 680 transitions. [2021-12-22 13:36:38,650 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 148 transitions, 662 flow [2021-12-22 13:36:38,652 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 148 transitions, 625 flow, removed 2 selfloop flow, removed 7 redundant places. [2021-12-22 13:36:38,654 INFO L242 Difference]: Finished difference. Result has 146 places, 132 transitions, 439 flow [2021-12-22 13:36:38,654 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=159, PETRI_DIFFERENCE_MINUEND_FLOW=464, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=439, PETRI_PLACES=146, PETRI_TRANSITIONS=132} [2021-12-22 13:36:38,654 INFO L334 CegarLoopForPetriNet]: 141 programPoint places, 5 predicate places. [2021-12-22 13:36:38,655 INFO L470 AbstractCegarLoop]: Abstraction has has 146 places, 132 transitions, 439 flow [2021-12-22 13:36:38,655 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 108.75) internal successors, (870), 8 states have internal predecessors, (870), 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) [2021-12-22 13:36:38,655 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-22 13:36:38,655 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 13:36:38,656 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-22 13:36:38,656 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-12-22 13:36:38,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:36:38,656 INFO L85 PathProgramCache]: Analyzing trace with hash 538088750, now seen corresponding path program 1 times [2021-12-22 13:36:38,657 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:36:38,657 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653292407] [2021-12-22 13:36:38,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:36:38,657 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:36:38,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:36:38,749 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 13:36:38,750 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:36:38,750 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1653292407] [2021-12-22 13:36:38,750 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1653292407] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:36:38,750 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:36:38,751 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-22 13:36:38,751 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169312862] [2021-12-22 13:36:38,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:36:38,751 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-22 13:36:38,751 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:36:38,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-22 13:36:38,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-22 13:36:38,753 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 159 [2021-12-22 13:36:38,754 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 132 transitions, 439 flow. Second operand has 8 states, 8 states have (on average 122.625) internal successors, (981), 8 states have internal predecessors, (981), 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) [2021-12-22 13:36:38,754 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-22 13:36:38,755 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 159 [2021-12-22 13:36:38,755 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-22 13:36:38,902 INFO L129 PetriNetUnfolder]: 44/474 cut-off events. [2021-12-22 13:36:38,902 INFO L130 PetriNetUnfolder]: For 113/115 co-relation queries the response was YES. [2021-12-22 13:36:38,903 INFO L84 FinitePrefix]: Finished finitePrefix Result has 979 conditions, 474 events. 44/474 cut-off events. For 113/115 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 2227 event pairs, 11 based on Foata normal form. 4/475 useless extension candidates. Maximal degree in co-relation 917. Up to 59 conditions per place. [2021-12-22 13:36:38,903 INFO L132 encePairwiseOnDemand]: 145/159 looper letters, 0 selfloop transitions, 0 changer transitions 158/158 dead transitions. [2021-12-22 13:36:38,904 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 158 transitions, 664 flow [2021-12-22 13:36:38,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-22 13:36:38,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2021-12-22 13:36:38,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1967 transitions. [2021-12-22 13:36:38,907 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.773191823899371 [2021-12-22 13:36:38,908 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1967 transitions. [2021-12-22 13:36:38,908 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1967 transitions. [2021-12-22 13:36:38,909 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-22 13:36:38,909 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1967 transitions. [2021-12-22 13:36:38,911 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 122.9375) internal successors, (1967), 16 states have internal predecessors, (1967), 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) [2021-12-22 13:36:38,915 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 159.0) internal successors, (2703), 17 states have internal predecessors, (2703), 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) [2021-12-22 13:36:38,915 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 159.0) internal successors, (2703), 17 states have internal predecessors, (2703), 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) [2021-12-22 13:36:38,915 INFO L186 Difference]: Start difference. First operand has 146 places, 132 transitions, 439 flow. Second operand 16 states and 1967 transitions. [2021-12-22 13:36:38,916 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 158 transitions, 664 flow [2021-12-22 13:36:38,917 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 158 transitions, 647 flow, removed 2 selfloop flow, removed 5 redundant places. [2021-12-22 13:36:38,920 INFO L242 Difference]: Finished difference. Result has 152 places, 0 transitions, 0 flow [2021-12-22 13:36:38,920 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=159, PETRI_DIFFERENCE_MINUEND_FLOW=419, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=0, PETRI_PLACES=152, PETRI_TRANSITIONS=0} [2021-12-22 13:36:38,923 INFO L334 CegarLoopForPetriNet]: 141 programPoint places, 11 predicate places. [2021-12-22 13:36:38,923 INFO L470 AbstractCegarLoop]: Abstraction has has 152 places, 0 transitions, 0 flow [2021-12-22 13:36:38,923 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 122.625) internal successors, (981), 8 states have internal predecessors, (981), 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) [2021-12-22 13:36:38,925 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (5 of 6 remaining) [2021-12-22 13:36:38,926 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (4 of 6 remaining) [2021-12-22 13:36:38,926 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (3 of 6 remaining) [2021-12-22 13:36:38,926 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION (2 of 6 remaining) [2021-12-22 13:36:38,926 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION (1 of 6 remaining) [2021-12-22 13:36:38,926 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION (0 of 6 remaining) [2021-12-22 13:36:38,927 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-22 13:36:38,929 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 13:36:38,931 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-12-22 13:36:38,931 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-22 13:36:38,940 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.12 01:36:38 BasicIcfg [2021-12-22 13:36:38,940 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-22 13:36:38,941 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-22 13:36:38,941 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-22 13:36:38,941 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-22 13:36:38,942 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 01:36:35" (3/4) ... [2021-12-22 13:36:38,943 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-12-22 13:36:38,948 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure t2_fun [2021-12-22 13:36:38,948 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure t_fun [2021-12-22 13:36:38,953 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 19 nodes and edges [2021-12-22 13:36:38,953 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-12-22 13:36:38,953 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-12-22 13:36:38,953 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-12-22 13:36:38,984 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-12-22 13:36:38,984 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-22 13:36:38,985 INFO L158 Benchmark]: Toolchain (without parser) took 4724.56ms. Allocated memory was 94.4MB in the beginning and 172.0MB in the end (delta: 77.6MB). Free memory was 65.8MB in the beginning and 52.5MB in the end (delta: 13.3MB). Peak memory consumption was 90.8MB. Max. memory is 16.1GB. [2021-12-22 13:36:38,985 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 94.4MB. Free memory was 51.6MB in the beginning and 51.5MB in the end (delta: 47.4kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-22 13:36:38,985 INFO L158 Benchmark]: CACSL2BoogieTranslator took 430.86ms. Allocated memory is still 94.4MB. Free memory was 65.6MB in the beginning and 61.6MB in the end (delta: 3.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-22 13:36:38,986 INFO L158 Benchmark]: Boogie Procedure Inliner took 61.88ms. Allocated memory is still 94.4MB. Free memory was 61.6MB in the beginning and 59.2MB in the end (delta: 2.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-12-22 13:36:38,986 INFO L158 Benchmark]: Boogie Preprocessor took 43.65ms. Allocated memory is still 94.4MB. Free memory was 59.2MB in the beginning and 57.8MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-22 13:36:38,986 INFO L158 Benchmark]: RCFGBuilder took 341.89ms. Allocated memory was 94.4MB in the beginning and 142.6MB in the end (delta: 48.2MB). Free memory was 57.8MB in the beginning and 117.7MB in the end (delta: -60.0MB). Peak memory consumption was 19.4MB. Max. memory is 16.1GB. [2021-12-22 13:36:38,987 INFO L158 Benchmark]: TraceAbstraction took 3796.88ms. Allocated memory was 142.6MB in the beginning and 172.0MB in the end (delta: 29.4MB). Free memory was 117.1MB in the beginning and 56.7MB in the end (delta: 60.4MB). Peak memory consumption was 89.4MB. Max. memory is 16.1GB. [2021-12-22 13:36:38,987 INFO L158 Benchmark]: Witness Printer took 43.30ms. Allocated memory is still 172.0MB. Free memory was 56.7MB in the beginning and 52.5MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-12-22 13:36:38,989 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 94.4MB. Free memory was 51.6MB in the beginning and 51.5MB in the end (delta: 47.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 430.86ms. Allocated memory is still 94.4MB. Free memory was 65.6MB in the beginning and 61.6MB in the end (delta: 3.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 61.88ms. Allocated memory is still 94.4MB. Free memory was 61.6MB in the beginning and 59.2MB in the end (delta: 2.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 43.65ms. Allocated memory is still 94.4MB. Free memory was 59.2MB in the beginning and 57.8MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 341.89ms. Allocated memory was 94.4MB in the beginning and 142.6MB in the end (delta: 48.2MB). Free memory was 57.8MB in the beginning and 117.7MB in the end (delta: -60.0MB). Peak memory consumption was 19.4MB. Max. memory is 16.1GB. * TraceAbstraction took 3796.88ms. Allocated memory was 142.6MB in the beginning and 172.0MB in the end (delta: 29.4MB). Free memory was 117.1MB in the beginning and 56.7MB in the end (delta: 60.4MB). Peak memory consumption was 89.4MB. Max. memory is 16.1GB. * Witness Printer took 43.30ms. Allocated memory is still 172.0MB. Free memory was 56.7MB in the beginning and 52.5MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. 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: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: 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 5 procedures, 196 locations, 6 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: 3.7s, OverallIterations: 8, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 2.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 513 SdHoareTripleChecker+Valid, 0.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 513 mSDsluCounter, 618 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 498 mSDsCounter, 262 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 914 IncrementalHoareTripleChecker+Invalid, 1176 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 262 mSolverCounterUnsat, 176 mSDtfsCounter, 914 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 117 GetRequests, 27 SyntacticMatches, 2 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 278 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1547occurred in iteration=4, InterpolantAutomatonStates: 82, 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, 0.1s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 628 NumberOfCodeBlocks, 628 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 620 ConstructedInterpolants, 0 QuantifiedInterpolants, 2713 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 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 4 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-12-22 13:36:39,050 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE