./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-wmm/safe012_tso.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version ae007674 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/pthread-wmm/safe012_tso.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 8ab6224550afdc7bd147a853b67470808fdf25e83f86b697677572dc7a8a62dd --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ae00767 [2021-12-28 02:51:02,503 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-28 02:51:02,504 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-28 02:51:02,535 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-28 02:51:02,535 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-28 02:51:02,537 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-28 02:51:02,538 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-28 02:51:02,542 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-28 02:51:02,544 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-28 02:51:02,548 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-28 02:51:02,548 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-28 02:51:02,549 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-28 02:51:02,550 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-28 02:51:02,552 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-28 02:51:02,553 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-28 02:51:02,557 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-28 02:51:02,558 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-28 02:51:02,558 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-28 02:51:02,560 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-28 02:51:02,564 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-28 02:51:02,565 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-28 02:51:02,566 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-28 02:51:02,567 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-28 02:51:02,568 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-28 02:51:02,573 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-28 02:51:02,573 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-28 02:51:02,573 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-28 02:51:02,574 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-28 02:51:02,575 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-28 02:51:02,575 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-28 02:51:02,575 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-28 02:51:02,576 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-28 02:51:02,577 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-28 02:51:02,578 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-28 02:51:02,578 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-28 02:51:02,579 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-28 02:51:02,579 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-28 02:51:02,579 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-28 02:51:02,580 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-28 02:51:02,581 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-28 02:51:02,581 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-28 02:51:02,584 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-28 02:51:02,623 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-28 02:51:02,623 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-28 02:51:02,624 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-28 02:51:02,624 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-28 02:51:02,624 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-28 02:51:02,625 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-28 02:51:02,625 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-28 02:51:02,625 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-28 02:51:02,625 INFO L138 SettingsManager]: * Use SBE=true [2021-12-28 02:51:02,626 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-28 02:51:02,626 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-28 02:51:02,626 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-28 02:51:02,626 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-28 02:51:02,626 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-28 02:51:02,626 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-28 02:51:02,627 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-28 02:51:02,627 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-28 02:51:02,629 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-28 02:51:02,629 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-28 02:51:02,629 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-28 02:51:02,629 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-28 02:51:02,629 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-28 02:51:02,630 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-28 02:51:02,630 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-28 02:51:02,630 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-28 02:51:02,630 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-28 02:51:02,630 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-28 02:51:02,631 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-28 02:51:02,631 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-28 02:51:02,631 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-28 02:51:02,631 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-28 02:51:02,632 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-28 02:51:02,632 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-28 02:51:02,632 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8ab6224550afdc7bd147a853b67470808fdf25e83f86b697677572dc7a8a62dd [2021-12-28 02:51:02,944 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-28 02:51:02,968 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-28 02:51:02,970 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-28 02:51:02,971 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-28 02:51:02,972 INFO L275 PluginConnector]: CDTParser initialized [2021-12-28 02:51:02,973 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/safe012_tso.i [2021-12-28 02:51:03,029 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d2a6d13f2/a739b4db375f4482b191cb2f668ca7ca/FLAG748bc7990 [2021-12-28 02:51:03,411 INFO L306 CDTParser]: Found 1 translation units. [2021-12-28 02:51:03,412 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe012_tso.i [2021-12-28 02:51:03,419 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d2a6d13f2/a739b4db375f4482b191cb2f668ca7ca/FLAG748bc7990 [2021-12-28 02:51:03,434 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d2a6d13f2/a739b4db375f4482b191cb2f668ca7ca [2021-12-28 02:51:03,436 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-28 02:51:03,437 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-28 02:51:03,439 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-28 02:51:03,439 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-28 02:51:03,442 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-28 02:51:03,442 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 02:51:03" (1/1) ... [2021-12-28 02:51:03,443 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f8e46aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 02:51:03, skipping insertion in model container [2021-12-28 02:51:03,443 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 02:51:03" (1/1) ... [2021-12-28 02:51:03,454 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-28 02:51:03,491 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-28 02:51:03,662 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe012_tso.i[945,958] [2021-12-28 02:51:03,787 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 02:51:03,792 INFO L203 MainTranslator]: Completed pre-run [2021-12-28 02:51:03,800 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe012_tso.i[945,958] [2021-12-28 02:51:03,829 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 02:51:03,860 INFO L208 MainTranslator]: Completed translation [2021-12-28 02:51:03,860 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 02:51:03 WrapperNode [2021-12-28 02:51:03,860 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-28 02:51:03,861 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-28 02:51:03,861 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-28 02:51:03,861 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-28 02:51:03,866 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 02:51:03" (1/1) ... [2021-12-28 02:51:03,890 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 02:51:03" (1/1) ... [2021-12-28 02:51:03,909 INFO L137 Inliner]: procedures = 176, calls = 53, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 72 [2021-12-28 02:51:03,910 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-28 02:51:03,910 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-28 02:51:03,911 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-28 02:51:03,911 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-28 02:51:03,916 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 02:51:03" (1/1) ... [2021-12-28 02:51:03,917 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 02:51:03" (1/1) ... [2021-12-28 02:51:03,930 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 02:51:03" (1/1) ... [2021-12-28 02:51:03,930 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 02:51:03" (1/1) ... [2021-12-28 02:51:03,934 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 02:51:03" (1/1) ... [2021-12-28 02:51:03,939 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 02:51:03" (1/1) ... [2021-12-28 02:51:03,941 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 02:51:03" (1/1) ... [2021-12-28 02:51:03,953 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-28 02:51:03,956 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-28 02:51:03,956 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-28 02:51:03,956 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-28 02:51:03,957 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 02:51:03" (1/1) ... [2021-12-28 02:51:03,964 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-28 02:51:03,985 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 02:51:03,997 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-28 02:51:03,999 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-28 02:51:04,033 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-28 02:51:04,033 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-12-28 02:51:04,034 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-28 02:51:04,034 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-28 02:51:04,034 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-28 02:51:04,034 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-12-28 02:51:04,034 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-12-28 02:51:04,034 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-12-28 02:51:04,034 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-12-28 02:51:04,035 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-12-28 02:51:04,035 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-12-28 02:51:04,035 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-28 02:51:04,035 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-12-28 02:51:04,035 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-28 02:51:04,035 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-28 02:51:04,036 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-12-28 02:51:04,151 INFO L234 CfgBuilder]: Building ICFG [2021-12-28 02:51:04,152 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-28 02:51:04,317 INFO L275 CfgBuilder]: Performing block encoding [2021-12-28 02:51:04,322 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-28 02:51:04,322 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-28 02:51:04,323 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 02:51:04 BoogieIcfgContainer [2021-12-28 02:51:04,323 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-28 02:51:04,324 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-28 02:51:04,324 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-28 02:51:04,326 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-28 02:51:04,326 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.12 02:51:03" (1/3) ... [2021-12-28 02:51:04,326 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d40939a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.12 02:51:04, skipping insertion in model container [2021-12-28 02:51:04,327 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 02:51:03" (2/3) ... [2021-12-28 02:51:04,327 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d40939a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.12 02:51:04, skipping insertion in model container [2021-12-28 02:51:04,327 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 02:51:04" (3/3) ... [2021-12-28 02:51:04,327 INFO L111 eAbstractionObserver]: Analyzing ICFG safe012_tso.i [2021-12-28 02:51:04,330 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-12-28 02:51:04,331 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-28 02:51:04,331 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-28 02:51:04,331 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-12-28 02:51:04,369 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:51:04,370 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:51:04,370 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:51:04,370 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:51:04,370 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:51:04,370 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:51:04,371 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:51:04,371 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:51:04,371 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:51:04,372 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:51:04,372 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:51:04,372 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:51:04,372 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:51:04,372 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:51:04,373 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:51:04,373 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:51:04,373 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:51:04,373 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:51:04,374 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:51:04,374 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:51:04,376 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:51:04,376 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:51:04,376 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:51:04,377 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:51:04,377 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:51:04,377 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:51:04,377 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:51:04,377 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:51:04,378 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:51:04,378 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:51:04,378 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:51:04,378 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:51:04,379 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:51:04,380 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:51:04,380 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:51:04,380 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:51:04,382 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:51:04,383 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:51:04,383 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:51:04,383 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:51:04,384 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:51:04,385 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:51:04,385 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:51:04,385 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:51:04,386 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:51:04,386 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:51:04,386 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:51:04,387 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:51:04,388 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-12-28 02:51:04,433 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-28 02:51:04,438 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 [2021-12-28 02:51:04,438 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-12-28 02:51:04,450 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 101 places, 93 transitions, 201 flow [2021-12-28 02:51:04,489 INFO L129 PetriNetUnfolder]: 2/90 cut-off events. [2021-12-28 02:51:04,490 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-12-28 02:51:04,493 INFO L84 FinitePrefix]: Finished finitePrefix Result has 100 conditions, 90 events. 2/90 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 46 event pairs, 0 based on Foata normal form. 0/87 useless extension candidates. Maximal degree in co-relation 68. Up to 2 conditions per place. [2021-12-28 02:51:04,493 INFO L82 GeneralOperation]: Start removeDead. Operand has 101 places, 93 transitions, 201 flow [2021-12-28 02:51:04,497 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 85 places, 76 transitions, 161 flow [2021-12-28 02:51:04,520 INFO L129 PetriNetUnfolder]: 1/75 cut-off events. [2021-12-28 02:51:04,520 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-12-28 02:51:04,520 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-28 02:51:04,521 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] [2021-12-28 02:51:04,522 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-28 02:51:04,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 02:51:04,527 INFO L85 PathProgramCache]: Analyzing trace with hash -1681563862, now seen corresponding path program 1 times [2021-12-28 02:51:04,532 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 02:51:04,532 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414086314] [2021-12-28 02:51:04,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 02:51:04,534 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 02:51:04,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:51:04,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 02:51:04,912 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 02:51:04,912 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414086314] [2021-12-28 02:51:04,913 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1414086314] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 02:51:04,913 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 02:51:04,913 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-28 02:51:04,914 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894642999] [2021-12-28 02:51:04,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 02:51:04,920 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-28 02:51:04,920 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 02:51:04,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-28 02:51:04,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-28 02:51:04,940 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 93 [2021-12-28 02:51:04,943 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 76 transitions, 161 flow. Second operand has 6 states, 6 states have (on average 76.0) internal successors, (456), 6 states have internal predecessors, (456), 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) [2021-12-28 02:51:04,943 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-28 02:51:04,943 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 93 [2021-12-28 02:51:04,944 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-28 02:51:05,149 INFO L129 PetriNetUnfolder]: 54/236 cut-off events. [2021-12-28 02:51:05,154 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2021-12-28 02:51:05,157 INFO L84 FinitePrefix]: Finished finitePrefix Result has 374 conditions, 236 events. 54/236 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 875 event pairs, 22 based on Foata normal form. 8/236 useless extension candidates. Maximal degree in co-relation 336. Up to 67 conditions per place. [2021-12-28 02:51:05,161 INFO L132 encePairwiseOnDemand]: 83/93 looper letters, 14 selfloop transitions, 5 changer transitions 22/101 dead transitions. [2021-12-28 02:51:05,162 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 101 transitions, 299 flow [2021-12-28 02:51:05,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-28 02:51:05,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-12-28 02:51:05,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 711 transitions. [2021-12-28 02:51:05,176 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8494623655913979 [2021-12-28 02:51:05,176 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 711 transitions. [2021-12-28 02:51:05,177 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 711 transitions. [2021-12-28 02:51:05,179 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-28 02:51:05,180 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 711 transitions. [2021-12-28 02:51:05,184 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 79.0) internal successors, (711), 9 states have internal predecessors, (711), 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) [2021-12-28 02:51:05,190 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 93.0) internal successors, (930), 10 states have internal predecessors, (930), 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) [2021-12-28 02:51:05,190 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 93.0) internal successors, (930), 10 states have internal predecessors, (930), 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) [2021-12-28 02:51:05,192 INFO L186 Difference]: Start difference. First operand has 85 places, 76 transitions, 161 flow. Second operand 9 states and 711 transitions. [2021-12-28 02:51:05,193 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 101 transitions, 299 flow [2021-12-28 02:51:05,195 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 101 transitions, 294 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-12-28 02:51:05,197 INFO L242 Difference]: Finished difference. Result has 97 places, 77 transitions, 205 flow [2021-12-28 02:51:05,198 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=93, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=205, PETRI_PLACES=97, PETRI_TRANSITIONS=77} [2021-12-28 02:51:05,201 INFO L334 CegarLoopForPetriNet]: 85 programPoint places, 12 predicate places. [2021-12-28 02:51:05,201 INFO L470 AbstractCegarLoop]: Abstraction has has 97 places, 77 transitions, 205 flow [2021-12-28 02:51:05,202 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 76.0) internal successors, (456), 6 states have internal predecessors, (456), 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) [2021-12-28 02:51:05,202 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-28 02:51:05,202 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] [2021-12-28 02:51:05,202 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-28 02:51:05,202 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-28 02:51:05,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 02:51:05,203 INFO L85 PathProgramCache]: Analyzing trace with hash -1200547319, now seen corresponding path program 1 times [2021-12-28 02:51:05,203 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 02:51:05,203 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1545855244] [2021-12-28 02:51:05,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 02:51:05,204 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 02:51:05,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:51:05,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 02:51:05,293 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 02:51:05,294 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1545855244] [2021-12-28 02:51:05,294 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1545855244] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 02:51:05,294 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 02:51:05,294 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-28 02:51:05,294 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298848152] [2021-12-28 02:51:05,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 02:51:05,295 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-28 02:51:05,296 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 02:51:05,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-28 02:51:05,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-28 02:51:05,297 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 93 [2021-12-28 02:51:05,298 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 77 transitions, 205 flow. Second operand has 7 states, 7 states have (on average 74.0) internal successors, (518), 7 states have internal predecessors, (518), 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) [2021-12-28 02:51:05,298 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-28 02:51:05,298 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 93 [2021-12-28 02:51:05,298 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-28 02:51:05,588 INFO L129 PetriNetUnfolder]: 97/378 cut-off events. [2021-12-28 02:51:05,588 INFO L130 PetriNetUnfolder]: For 326/354 co-relation queries the response was YES. [2021-12-28 02:51:05,591 INFO L84 FinitePrefix]: Finished finitePrefix Result has 814 conditions, 378 events. 97/378 cut-off events. For 326/354 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1775 event pairs, 7 based on Foata normal form. 8/378 useless extension candidates. Maximal degree in co-relation 766. Up to 53 conditions per place. [2021-12-28 02:51:05,593 INFO L132 encePairwiseOnDemand]: 81/93 looper letters, 29 selfloop transitions, 11 changer transitions 38/136 dead transitions. [2021-12-28 02:51:05,593 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 136 transitions, 621 flow [2021-12-28 02:51:05,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-12-28 02:51:05,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2021-12-28 02:51:05,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1305 transitions. [2021-12-28 02:51:05,597 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.825426944971537 [2021-12-28 02:51:05,598 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1305 transitions. [2021-12-28 02:51:05,598 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1305 transitions. [2021-12-28 02:51:05,599 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-28 02:51:05,599 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1305 transitions. [2021-12-28 02:51:05,602 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 76.76470588235294) internal successors, (1305), 17 states have internal predecessors, (1305), 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) [2021-12-28 02:51:05,605 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 93.0) internal successors, (1674), 18 states have internal predecessors, (1674), 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) [2021-12-28 02:51:05,606 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 93.0) internal successors, (1674), 18 states have internal predecessors, (1674), 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) [2021-12-28 02:51:05,606 INFO L186 Difference]: Start difference. First operand has 97 places, 77 transitions, 205 flow. Second operand 17 states and 1305 transitions. [2021-12-28 02:51:05,606 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 136 transitions, 621 flow [2021-12-28 02:51:05,609 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 136 transitions, 576 flow, removed 20 selfloop flow, removed 4 redundant places. [2021-12-28 02:51:05,611 INFO L242 Difference]: Finished difference. Result has 118 places, 82 transitions, 313 flow [2021-12-28 02:51:05,611 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=93, PETRI_DIFFERENCE_MINUEND_FLOW=194, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=313, PETRI_PLACES=118, PETRI_TRANSITIONS=82} [2021-12-28 02:51:05,612 INFO L334 CegarLoopForPetriNet]: 85 programPoint places, 33 predicate places. [2021-12-28 02:51:05,612 INFO L470 AbstractCegarLoop]: Abstraction has has 118 places, 82 transitions, 313 flow [2021-12-28 02:51:05,612 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 74.0) internal successors, (518), 7 states have internal predecessors, (518), 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) [2021-12-28 02:51:05,613 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-28 02:51:05,613 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] [2021-12-28 02:51:05,613 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-28 02:51:05,613 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-28 02:51:05,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 02:51:05,614 INFO L85 PathProgramCache]: Analyzing trace with hash -1976276855, now seen corresponding path program 1 times [2021-12-28 02:51:05,614 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 02:51:05,614 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2104077989] [2021-12-28 02:51:05,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 02:51:05,614 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 02:51:05,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:51:05,710 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 02:51:05,710 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 02:51:05,710 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2104077989] [2021-12-28 02:51:05,711 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2104077989] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 02:51:05,711 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 02:51:05,711 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-28 02:51:05,711 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390700715] [2021-12-28 02:51:05,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 02:51:05,712 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-28 02:51:05,712 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 02:51:05,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-28 02:51:05,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-28 02:51:05,714 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 93 [2021-12-28 02:51:05,715 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 82 transitions, 313 flow. Second operand has 7 states, 7 states have (on average 75.85714285714286) internal successors, (531), 7 states have internal predecessors, (531), 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) [2021-12-28 02:51:05,715 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-28 02:51:05,715 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 93 [2021-12-28 02:51:05,716 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-28 02:51:05,835 INFO L129 PetriNetUnfolder]: 34/192 cut-off events. [2021-12-28 02:51:05,836 INFO L130 PetriNetUnfolder]: For 903/961 co-relation queries the response was YES. [2021-12-28 02:51:05,837 INFO L84 FinitePrefix]: Finished finitePrefix Result has 661 conditions, 192 events. 34/192 cut-off events. For 903/961 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 623 event pairs, 6 based on Foata normal form. 8/195 useless extension candidates. Maximal degree in co-relation 597. Up to 43 conditions per place. [2021-12-28 02:51:05,838 INFO L132 encePairwiseOnDemand]: 87/93 looper letters, 19 selfloop transitions, 4 changer transitions 22/106 dead transitions. [2021-12-28 02:51:05,838 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 106 transitions, 636 flow [2021-12-28 02:51:05,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-28 02:51:05,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-12-28 02:51:05,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 699 transitions. [2021-12-28 02:51:05,840 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8351254480286738 [2021-12-28 02:51:05,841 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 699 transitions. [2021-12-28 02:51:05,841 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 699 transitions. [2021-12-28 02:51:05,841 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-28 02:51:05,841 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 699 transitions. [2021-12-28 02:51:05,843 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 77.66666666666667) internal successors, (699), 9 states have internal predecessors, (699), 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) [2021-12-28 02:51:05,845 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 93.0) internal successors, (930), 10 states have internal predecessors, (930), 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) [2021-12-28 02:51:05,845 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 93.0) internal successors, (930), 10 states have internal predecessors, (930), 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) [2021-12-28 02:51:05,845 INFO L186 Difference]: Start difference. First operand has 118 places, 82 transitions, 313 flow. Second operand 9 states and 699 transitions. [2021-12-28 02:51:05,845 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 106 transitions, 636 flow [2021-12-28 02:51:05,851 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 106 transitions, 544 flow, removed 42 selfloop flow, removed 10 redundant places. [2021-12-28 02:51:05,853 INFO L242 Difference]: Finished difference. Result has 111 places, 82 transitions, 304 flow [2021-12-28 02:51:05,853 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=93, PETRI_DIFFERENCE_MINUEND_FLOW=278, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=304, PETRI_PLACES=111, PETRI_TRANSITIONS=82} [2021-12-28 02:51:05,854 INFO L334 CegarLoopForPetriNet]: 85 programPoint places, 26 predicate places. [2021-12-28 02:51:05,854 INFO L470 AbstractCegarLoop]: Abstraction has has 111 places, 82 transitions, 304 flow [2021-12-28 02:51:05,855 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 75.85714285714286) internal successors, (531), 7 states have internal predecessors, (531), 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) [2021-12-28 02:51:05,855 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-28 02:51:05,855 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] [2021-12-28 02:51:05,855 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-28 02:51:05,855 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-28 02:51:05,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 02:51:05,856 INFO L85 PathProgramCache]: Analyzing trace with hash -772166055, now seen corresponding path program 1 times [2021-12-28 02:51:05,856 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 02:51:05,856 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [717860613] [2021-12-28 02:51:05,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 02:51:05,857 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 02:51:05,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:51:05,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 02:51:05,940 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 02:51:05,940 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [717860613] [2021-12-28 02:51:05,940 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [717860613] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 02:51:05,940 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 02:51:05,940 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-28 02:51:05,941 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102062681] [2021-12-28 02:51:05,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 02:51:05,941 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-28 02:51:05,941 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 02:51:05,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-28 02:51:05,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-28 02:51:05,943 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 93 [2021-12-28 02:51:05,943 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 82 transitions, 304 flow. Second operand has 7 states, 7 states have (on average 76.0) internal successors, (532), 7 states have internal predecessors, (532), 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) [2021-12-28 02:51:05,943 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-28 02:51:05,943 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 93 [2021-12-28 02:51:05,944 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-28 02:51:06,027 INFO L129 PetriNetUnfolder]: 16/136 cut-off events. [2021-12-28 02:51:06,027 INFO L130 PetriNetUnfolder]: For 373/433 co-relation queries the response was YES. [2021-12-28 02:51:06,028 INFO L84 FinitePrefix]: Finished finitePrefix Result has 397 conditions, 136 events. 16/136 cut-off events. For 373/433 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 299 event pairs, 4 based on Foata normal form. 2/132 useless extension candidates. Maximal degree in co-relation 356. Up to 25 conditions per place. [2021-12-28 02:51:06,028 INFO L132 encePairwiseOnDemand]: 85/93 looper letters, 16 selfloop transitions, 6 changer transitions 10/93 dead transitions. [2021-12-28 02:51:06,029 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 93 transitions, 482 flow [2021-12-28 02:51:06,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-28 02:51:06,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-12-28 02:51:06,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 769 transitions. [2021-12-28 02:51:06,031 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8268817204301075 [2021-12-28 02:51:06,031 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 769 transitions. [2021-12-28 02:51:06,031 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 769 transitions. [2021-12-28 02:51:06,031 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-28 02:51:06,031 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 769 transitions. [2021-12-28 02:51:06,045 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 76.9) internal successors, (769), 10 states have internal predecessors, (769), 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) [2021-12-28 02:51:06,047 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 93.0) internal successors, (1023), 11 states have internal predecessors, (1023), 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) [2021-12-28 02:51:06,047 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 93.0) internal successors, (1023), 11 states have internal predecessors, (1023), 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) [2021-12-28 02:51:06,047 INFO L186 Difference]: Start difference. First operand has 111 places, 82 transitions, 304 flow. Second operand 10 states and 769 transitions. [2021-12-28 02:51:06,047 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 93 transitions, 482 flow [2021-12-28 02:51:06,049 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 93 transitions, 416 flow, removed 29 selfloop flow, removed 9 redundant places. [2021-12-28 02:51:06,051 INFO L242 Difference]: Finished difference. Result has 112 places, 82 transitions, 296 flow [2021-12-28 02:51:06,051 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=93, PETRI_DIFFERENCE_MINUEND_FLOW=266, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=296, PETRI_PLACES=112, PETRI_TRANSITIONS=82} [2021-12-28 02:51:06,052 INFO L334 CegarLoopForPetriNet]: 85 programPoint places, 27 predicate places. [2021-12-28 02:51:06,052 INFO L470 AbstractCegarLoop]: Abstraction has has 112 places, 82 transitions, 296 flow [2021-12-28 02:51:06,052 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 76.0) internal successors, (532), 7 states have internal predecessors, (532), 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) [2021-12-28 02:51:06,052 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-28 02:51:06,052 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] [2021-12-28 02:51:06,053 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-28 02:51:06,053 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-28 02:51:06,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 02:51:06,054 INFO L85 PathProgramCache]: Analyzing trace with hash -820442422, now seen corresponding path program 1 times [2021-12-28 02:51:06,054 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 02:51:06,054 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868855710] [2021-12-28 02:51:06,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 02:51:06,054 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 02:51:06,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:51:06,134 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 02:51:06,135 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 02:51:06,135 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [868855710] [2021-12-28 02:51:06,135 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [868855710] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 02:51:06,135 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 02:51:06,135 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-28 02:51:06,136 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514902430] [2021-12-28 02:51:06,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 02:51:06,136 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-28 02:51:06,136 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 02:51:06,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-28 02:51:06,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-28 02:51:06,138 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 93 [2021-12-28 02:51:06,138 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 82 transitions, 296 flow. Second operand has 7 states, 7 states have (on average 74.14285714285714) internal successors, (519), 7 states have internal predecessors, (519), 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) [2021-12-28 02:51:06,138 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-28 02:51:06,138 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 93 [2021-12-28 02:51:06,139 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-28 02:51:06,342 INFO L129 PetriNetUnfolder]: 70/373 cut-off events. [2021-12-28 02:51:06,342 INFO L130 PetriNetUnfolder]: For 912/1051 co-relation queries the response was YES. [2021-12-28 02:51:06,344 INFO L84 FinitePrefix]: Finished finitePrefix Result has 985 conditions, 373 events. 70/373 cut-off events. For 912/1051 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1824 event pairs, 7 based on Foata normal form. 9/370 useless extension candidates. Maximal degree in co-relation 920. Up to 70 conditions per place. [2021-12-28 02:51:06,345 INFO L132 encePairwiseOnDemand]: 81/93 looper letters, 29 selfloop transitions, 16 changer transitions 27/131 dead transitions. [2021-12-28 02:51:06,345 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 131 transitions, 818 flow [2021-12-28 02:51:06,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-12-28 02:51:06,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2021-12-28 02:51:06,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1289 transitions. [2021-12-28 02:51:06,349 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8153067678684377 [2021-12-28 02:51:06,349 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1289 transitions. [2021-12-28 02:51:06,349 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1289 transitions. [2021-12-28 02:51:06,349 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-28 02:51:06,350 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1289 transitions. [2021-12-28 02:51:06,352 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 75.82352941176471) internal successors, (1289), 17 states have internal predecessors, (1289), 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) [2021-12-28 02:51:06,354 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 93.0) internal successors, (1674), 18 states have internal predecessors, (1674), 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) [2021-12-28 02:51:06,354 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 93.0) internal successors, (1674), 18 states have internal predecessors, (1674), 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) [2021-12-28 02:51:06,354 INFO L186 Difference]: Start difference. First operand has 112 places, 82 transitions, 296 flow. Second operand 17 states and 1289 transitions. [2021-12-28 02:51:06,355 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 131 transitions, 818 flow [2021-12-28 02:51:06,357 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 131 transitions, 704 flow, removed 48 selfloop flow, removed 11 redundant places. [2021-12-28 02:51:06,359 INFO L242 Difference]: Finished difference. Result has 126 places, 92 transitions, 450 flow [2021-12-28 02:51:06,359 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=93, PETRI_DIFFERENCE_MINUEND_FLOW=260, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=450, PETRI_PLACES=126, PETRI_TRANSITIONS=92} [2021-12-28 02:51:06,360 INFO L334 CegarLoopForPetriNet]: 85 programPoint places, 41 predicate places. [2021-12-28 02:51:06,360 INFO L470 AbstractCegarLoop]: Abstraction has has 126 places, 92 transitions, 450 flow [2021-12-28 02:51:06,360 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 74.14285714285714) internal successors, (519), 7 states have internal predecessors, (519), 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) [2021-12-28 02:51:06,360 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-28 02:51:06,361 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 02:51:06,361 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-28 02:51:06,361 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-28 02:51:06,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 02:51:06,361 INFO L85 PathProgramCache]: Analyzing trace with hash 1041133958, now seen corresponding path program 1 times [2021-12-28 02:51:06,361 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 02:51:06,362 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1214977057] [2021-12-28 02:51:06,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 02:51:06,362 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 02:51:06,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:51:06,434 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 02:51:06,435 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 02:51:06,435 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1214977057] [2021-12-28 02:51:06,435 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1214977057] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 02:51:06,435 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 02:51:06,435 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-28 02:51:06,436 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52076033] [2021-12-28 02:51:06,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 02:51:06,436 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-28 02:51:06,436 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 02:51:06,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-28 02:51:06,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-12-28 02:51:06,437 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 93 [2021-12-28 02:51:06,438 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 92 transitions, 450 flow. Second operand has 8 states, 8 states have (on average 74.0) internal successors, (592), 8 states have internal predecessors, (592), 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) [2021-12-28 02:51:06,438 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-28 02:51:06,438 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 93 [2021-12-28 02:51:06,438 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-28 02:51:06,556 INFO L129 PetriNetUnfolder]: 48/251 cut-off events. [2021-12-28 02:51:06,556 INFO L130 PetriNetUnfolder]: For 1770/2529 co-relation queries the response was YES. [2021-12-28 02:51:06,558 INFO L84 FinitePrefix]: Finished finitePrefix Result has 953 conditions, 251 events. 48/251 cut-off events. For 1770/2529 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1081 event pairs, 4 based on Foata normal form. 6/245 useless extension candidates. Maximal degree in co-relation 895. Up to 43 conditions per place. [2021-12-28 02:51:06,559 INFO L132 encePairwiseOnDemand]: 83/93 looper letters, 19 selfloop transitions, 9 changer transitions 29/116 dead transitions. [2021-12-28 02:51:06,559 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 116 transitions, 911 flow [2021-12-28 02:51:06,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-28 02:51:06,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-12-28 02:51:06,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 834 transitions. [2021-12-28 02:51:06,562 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8152492668621701 [2021-12-28 02:51:06,562 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 834 transitions. [2021-12-28 02:51:06,562 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 834 transitions. [2021-12-28 02:51:06,563 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-28 02:51:06,563 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 834 transitions. [2021-12-28 02:51:06,565 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 75.81818181818181) internal successors, (834), 11 states have internal predecessors, (834), 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) [2021-12-28 02:51:06,566 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 93.0) internal successors, (1116), 12 states have internal predecessors, (1116), 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) [2021-12-28 02:51:06,567 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 93.0) internal successors, (1116), 12 states have internal predecessors, (1116), 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) [2021-12-28 02:51:06,567 INFO L186 Difference]: Start difference. First operand has 126 places, 92 transitions, 450 flow. Second operand 11 states and 834 transitions. [2021-12-28 02:51:06,567 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 116 transitions, 911 flow [2021-12-28 02:51:06,571 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 116 transitions, 735 flow, removed 88 selfloop flow, removed 12 redundant places. [2021-12-28 02:51:06,572 INFO L242 Difference]: Finished difference. Result has 120 places, 84 transitions, 357 flow [2021-12-28 02:51:06,573 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=93, PETRI_DIFFERENCE_MINUEND_FLOW=402, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=357, PETRI_PLACES=120, PETRI_TRANSITIONS=84} [2021-12-28 02:51:06,573 INFO L334 CegarLoopForPetriNet]: 85 programPoint places, 35 predicate places. [2021-12-28 02:51:06,573 INFO L470 AbstractCegarLoop]: Abstraction has has 120 places, 84 transitions, 357 flow [2021-12-28 02:51:06,574 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 74.0) internal successors, (592), 8 states have internal predecessors, (592), 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) [2021-12-28 02:51:06,574 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-28 02:51:06,574 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 02:51:06,574 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-28 02:51:06,574 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-28 02:51:06,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 02:51:06,575 INFO L85 PathProgramCache]: Analyzing trace with hash -55246929, now seen corresponding path program 1 times [2021-12-28 02:51:06,575 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 02:51:06,575 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662968428] [2021-12-28 02:51:06,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 02:51:06,575 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 02:51:06,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:51:06,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 02:51:06,636 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 02:51:06,636 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662968428] [2021-12-28 02:51:06,636 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1662968428] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 02:51:06,636 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 02:51:06,636 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-28 02:51:06,636 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317091176] [2021-12-28 02:51:06,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 02:51:06,637 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-28 02:51:06,637 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 02:51:06,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-28 02:51:06,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-28 02:51:06,638 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 93 [2021-12-28 02:51:06,639 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 84 transitions, 357 flow. Second operand has 7 states, 7 states have (on average 77.71428571428571) internal successors, (544), 7 states have internal predecessors, (544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 02:51:06,639 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-28 02:51:06,639 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 93 [2021-12-28 02:51:06,639 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-28 02:51:06,752 INFO L129 PetriNetUnfolder]: 25/172 cut-off events. [2021-12-28 02:51:06,752 INFO L130 PetriNetUnfolder]: For 796/1016 co-relation queries the response was YES. [2021-12-28 02:51:06,753 INFO L84 FinitePrefix]: Finished finitePrefix Result has 541 conditions, 172 events. 25/172 cut-off events. For 796/1016 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 462 event pairs, 6 based on Foata normal form. 4/168 useless extension candidates. Maximal degree in co-relation 497. Up to 27 conditions per place. [2021-12-28 02:51:06,754 INFO L132 encePairwiseOnDemand]: 85/93 looper letters, 9 selfloop transitions, 4 changer transitions 21/95 dead transitions. [2021-12-28 02:51:06,754 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 95 transitions, 501 flow [2021-12-28 02:51:06,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-28 02:51:06,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-12-28 02:51:06,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 787 transitions. [2021-12-28 02:51:06,757 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8462365591397849 [2021-12-28 02:51:06,757 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 787 transitions. [2021-12-28 02:51:06,757 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 787 transitions. [2021-12-28 02:51:06,758 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-28 02:51:06,758 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 787 transitions. [2021-12-28 02:51:06,759 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 78.7) internal successors, (787), 10 states have internal predecessors, (787), 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) [2021-12-28 02:51:06,761 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 93.0) internal successors, (1023), 11 states have internal predecessors, (1023), 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) [2021-12-28 02:51:06,761 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 93.0) internal successors, (1023), 11 states have internal predecessors, (1023), 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) [2021-12-28 02:51:06,761 INFO L186 Difference]: Start difference. First operand has 120 places, 84 transitions, 357 flow. Second operand 10 states and 787 transitions. [2021-12-28 02:51:06,761 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 95 transitions, 501 flow [2021-12-28 02:51:06,764 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 95 transitions, 428 flow, removed 22 selfloop flow, removed 13 redundant places. [2021-12-28 02:51:06,766 INFO L242 Difference]: Finished difference. Result has 118 places, 74 transitions, 272 flow [2021-12-28 02:51:06,766 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=93, PETRI_DIFFERENCE_MINUEND_FLOW=308, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=272, PETRI_PLACES=118, PETRI_TRANSITIONS=74} [2021-12-28 02:51:06,767 INFO L334 CegarLoopForPetriNet]: 85 programPoint places, 33 predicate places. [2021-12-28 02:51:06,767 INFO L470 AbstractCegarLoop]: Abstraction has has 118 places, 74 transitions, 272 flow [2021-12-28 02:51:06,767 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 77.71428571428571) internal successors, (544), 7 states have internal predecessors, (544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 02:51:06,767 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-28 02:51:06,768 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] [2021-12-28 02:51:06,768 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-28 02:51:06,768 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-28 02:51:06,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 02:51:06,768 INFO L85 PathProgramCache]: Analyzing trace with hash -1882917079, now seen corresponding path program 1 times [2021-12-28 02:51:06,769 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 02:51:06,769 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1237174957] [2021-12-28 02:51:06,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 02:51:06,769 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 02:51:06,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:51:06,824 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 02:51:06,824 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 02:51:06,824 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1237174957] [2021-12-28 02:51:06,824 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1237174957] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 02:51:06,825 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 02:51:06,825 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-28 02:51:06,825 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345248439] [2021-12-28 02:51:06,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 02:51:06,826 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-28 02:51:06,826 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 02:51:06,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-28 02:51:06,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-28 02:51:06,827 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 93 [2021-12-28 02:51:06,828 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 74 transitions, 272 flow. Second operand has 6 states, 6 states have (on average 77.66666666666667) internal successors, (466), 6 states have internal predecessors, (466), 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) [2021-12-28 02:51:06,828 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-28 02:51:06,828 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 93 [2021-12-28 02:51:06,828 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-28 02:51:06,941 INFO L129 PetriNetUnfolder]: 113/367 cut-off events. [2021-12-28 02:51:06,942 INFO L130 PetriNetUnfolder]: For 765/792 co-relation queries the response was YES. [2021-12-28 02:51:06,943 INFO L84 FinitePrefix]: Finished finitePrefix Result has 906 conditions, 367 events. 113/367 cut-off events. For 765/792 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1722 event pairs, 14 based on Foata normal form. 8/360 useless extension candidates. Maximal degree in co-relation 836. Up to 90 conditions per place. [2021-12-28 02:51:06,945 INFO L132 encePairwiseOnDemand]: 84/93 looper letters, 14 selfloop transitions, 6 changer transitions 19/100 dead transitions. [2021-12-28 02:51:06,945 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 100 transitions, 404 flow [2021-12-28 02:51:06,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-28 02:51:06,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-12-28 02:51:06,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 725 transitions. [2021-12-28 02:51:06,948 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8661887694145759 [2021-12-28 02:51:06,948 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 725 transitions. [2021-12-28 02:51:06,948 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 725 transitions. [2021-12-28 02:51:06,949 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-28 02:51:06,949 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 725 transitions. [2021-12-28 02:51:06,951 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 80.55555555555556) internal successors, (725), 9 states have internal predecessors, (725), 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) [2021-12-28 02:51:06,952 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 93.0) internal successors, (930), 10 states have internal predecessors, (930), 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) [2021-12-28 02:51:06,953 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 93.0) internal successors, (930), 10 states have internal predecessors, (930), 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) [2021-12-28 02:51:06,953 INFO L186 Difference]: Start difference. First operand has 118 places, 74 transitions, 272 flow. Second operand 9 states and 725 transitions. [2021-12-28 02:51:06,953 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 100 transitions, 404 flow [2021-12-28 02:51:06,956 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 100 transitions, 346 flow, removed 12 selfloop flow, removed 18 redundant places. [2021-12-28 02:51:06,957 INFO L242 Difference]: Finished difference. Result has 106 places, 77 transitions, 270 flow [2021-12-28 02:51:06,957 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=93, PETRI_DIFFERENCE_MINUEND_FLOW=214, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=270, PETRI_PLACES=106, PETRI_TRANSITIONS=77} [2021-12-28 02:51:06,958 INFO L334 CegarLoopForPetriNet]: 85 programPoint places, 21 predicate places. [2021-12-28 02:51:06,958 INFO L470 AbstractCegarLoop]: Abstraction has has 106 places, 77 transitions, 270 flow [2021-12-28 02:51:06,959 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 77.66666666666667) internal successors, (466), 6 states have internal predecessors, (466), 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) [2021-12-28 02:51:06,959 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-28 02:51:06,959 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 02:51:06,959 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-28 02:51:06,959 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-28 02:51:06,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 02:51:06,960 INFO L85 PathProgramCache]: Analyzing trace with hash -496828178, now seen corresponding path program 1 times [2021-12-28 02:51:06,960 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 02:51:06,960 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89179882] [2021-12-28 02:51:06,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 02:51:06,961 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 02:51:06,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:51:07,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 02:51:07,031 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 02:51:07,031 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89179882] [2021-12-28 02:51:07,031 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [89179882] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 02:51:07,031 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 02:51:07,031 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-28 02:51:07,032 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941816070] [2021-12-28 02:51:07,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 02:51:07,032 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-28 02:51:07,032 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 02:51:07,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-28 02:51:07,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-28 02:51:07,034 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 93 [2021-12-28 02:51:07,035 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 77 transitions, 270 flow. Second operand has 7 states, 7 states have (on average 77.57142857142857) internal successors, (543), 7 states have internal predecessors, (543), 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) [2021-12-28 02:51:07,035 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-28 02:51:07,035 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 93 [2021-12-28 02:51:07,035 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-28 02:51:07,151 INFO L129 PetriNetUnfolder]: 60/248 cut-off events. [2021-12-28 02:51:07,151 INFO L130 PetriNetUnfolder]: For 485/509 co-relation queries the response was YES. [2021-12-28 02:51:07,152 INFO L84 FinitePrefix]: Finished finitePrefix Result has 759 conditions, 248 events. 60/248 cut-off events. For 485/509 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 892 event pairs, 4 based on Foata normal form. 9/253 useless extension candidates. Maximal degree in co-relation 701. Up to 79 conditions per place. [2021-12-28 02:51:07,154 INFO L132 encePairwiseOnDemand]: 84/93 looper letters, 14 selfloop transitions, 9 changer transitions 19/103 dead transitions. [2021-12-28 02:51:07,154 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 103 transitions, 535 flow [2021-12-28 02:51:07,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-28 02:51:07,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-12-28 02:51:07,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 804 transitions. [2021-12-28 02:51:07,158 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.864516129032258 [2021-12-28 02:51:07,158 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 804 transitions. [2021-12-28 02:51:07,158 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 804 transitions. [2021-12-28 02:51:07,159 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-28 02:51:07,159 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 804 transitions. [2021-12-28 02:51:07,161 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 80.4) internal successors, (804), 10 states have internal predecessors, (804), 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) [2021-12-28 02:51:07,164 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 93.0) internal successors, (1023), 11 states have internal predecessors, (1023), 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) [2021-12-28 02:51:07,164 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 93.0) internal successors, (1023), 11 states have internal predecessors, (1023), 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) [2021-12-28 02:51:07,164 INFO L186 Difference]: Start difference. First operand has 106 places, 77 transitions, 270 flow. Second operand 10 states and 804 transitions. [2021-12-28 02:51:07,165 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 103 transitions, 535 flow [2021-12-28 02:51:07,167 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 103 transitions, 511 flow, removed 7 selfloop flow, removed 5 redundant places. [2021-12-28 02:51:07,169 INFO L242 Difference]: Finished difference. Result has 112 places, 80 transitions, 338 flow [2021-12-28 02:51:07,169 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=93, PETRI_DIFFERENCE_MINUEND_FLOW=256, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=338, PETRI_PLACES=112, PETRI_TRANSITIONS=80} [2021-12-28 02:51:07,170 INFO L334 CegarLoopForPetriNet]: 85 programPoint places, 27 predicate places. [2021-12-28 02:51:07,171 INFO L470 AbstractCegarLoop]: Abstraction has has 112 places, 80 transitions, 338 flow [2021-12-28 02:51:07,171 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 77.57142857142857) internal successors, (543), 7 states have internal predecessors, (543), 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) [2021-12-28 02:51:07,171 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-28 02:51:07,171 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] [2021-12-28 02:51:07,172 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-28 02:51:07,172 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-28 02:51:07,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 02:51:07,173 INFO L85 PathProgramCache]: Analyzing trace with hash 1039920585, now seen corresponding path program 1 times [2021-12-28 02:51:07,173 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 02:51:07,173 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549587455] [2021-12-28 02:51:07,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 02:51:07,173 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 02:51:07,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:51:07,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 02:51:07,296 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 02:51:07,296 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [549587455] [2021-12-28 02:51:07,296 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [549587455] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 02:51:07,296 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 02:51:07,296 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-28 02:51:07,298 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317982959] [2021-12-28 02:51:07,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 02:51:07,300 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-28 02:51:07,301 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 02:51:07,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-28 02:51:07,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-12-28 02:51:07,304 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 93 [2021-12-28 02:51:07,305 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 80 transitions, 338 flow. Second operand has 8 states, 8 states have (on average 77.5) internal successors, (620), 8 states have internal predecessors, (620), 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) [2021-12-28 02:51:07,305 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-28 02:51:07,305 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 93 [2021-12-28 02:51:07,305 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-28 02:51:07,449 INFO L129 PetriNetUnfolder]: 17/127 cut-off events. [2021-12-28 02:51:07,449 INFO L130 PetriNetUnfolder]: For 445/485 co-relation queries the response was YES. [2021-12-28 02:51:07,450 INFO L84 FinitePrefix]: Finished finitePrefix Result has 413 conditions, 127 events. 17/127 cut-off events. For 445/485 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 237 event pairs, 0 based on Foata normal form. 14/140 useless extension candidates. Maximal degree in co-relation 371. Up to 31 conditions per place. [2021-12-28 02:51:07,450 INFO L132 encePairwiseOnDemand]: 84/93 looper letters, 8 selfloop transitions, 12 changer transitions 13/94 dead transitions. [2021-12-28 02:51:07,451 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 94 transitions, 534 flow [2021-12-28 02:51:07,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-28 02:51:07,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-12-28 02:51:07,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 871 transitions. [2021-12-28 02:51:07,453 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8514173998044966 [2021-12-28 02:51:07,454 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 871 transitions. [2021-12-28 02:51:07,454 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 871 transitions. [2021-12-28 02:51:07,455 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-28 02:51:07,455 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 871 transitions. [2021-12-28 02:51:07,457 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 79.18181818181819) internal successors, (871), 11 states have internal predecessors, (871), 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) [2021-12-28 02:51:07,459 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 93.0) internal successors, (1116), 12 states have internal predecessors, (1116), 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) [2021-12-28 02:51:07,460 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 93.0) internal successors, (1116), 12 states have internal predecessors, (1116), 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) [2021-12-28 02:51:07,460 INFO L186 Difference]: Start difference. First operand has 112 places, 80 transitions, 338 flow. Second operand 11 states and 871 transitions. [2021-12-28 02:51:07,460 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 94 transitions, 534 flow [2021-12-28 02:51:07,462 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 94 transitions, 393 flow, removed 53 selfloop flow, removed 17 redundant places. [2021-12-28 02:51:07,463 INFO L242 Difference]: Finished difference. Result has 107 places, 80 transitions, 282 flow [2021-12-28 02:51:07,464 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=93, PETRI_DIFFERENCE_MINUEND_FLOW=236, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=282, PETRI_PLACES=107, PETRI_TRANSITIONS=80} [2021-12-28 02:51:07,464 INFO L334 CegarLoopForPetriNet]: 85 programPoint places, 22 predicate places. [2021-12-28 02:51:07,465 INFO L470 AbstractCegarLoop]: Abstraction has has 107 places, 80 transitions, 282 flow [2021-12-28 02:51:07,465 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 77.5) internal successors, (620), 8 states have internal predecessors, (620), 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) [2021-12-28 02:51:07,465 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-28 02:51:07,465 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 02:51:07,466 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-28 02:51:07,466 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-28 02:51:07,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 02:51:07,466 INFO L85 PathProgramCache]: Analyzing trace with hash 1272626232, now seen corresponding path program 1 times [2021-12-28 02:51:07,466 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 02:51:07,467 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346452782] [2021-12-28 02:51:07,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 02:51:07,467 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 02:51:07,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:51:07,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 02:51:07,550 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 02:51:07,550 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [346452782] [2021-12-28 02:51:07,550 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [346452782] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 02:51:07,550 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 02:51:07,550 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-28 02:51:07,551 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86927770] [2021-12-28 02:51:07,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 02:51:07,551 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-28 02:51:07,551 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 02:51:07,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-28 02:51:07,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-28 02:51:07,553 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 93 [2021-12-28 02:51:07,553 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 80 transitions, 282 flow. Second operand has 7 states, 7 states have (on average 77.85714285714286) internal successors, (545), 7 states have internal predecessors, (545), 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) [2021-12-28 02:51:07,554 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-28 02:51:07,554 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 93 [2021-12-28 02:51:07,554 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-28 02:51:07,639 INFO L129 PetriNetUnfolder]: 6/95 cut-off events. [2021-12-28 02:51:07,646 INFO L130 PetriNetUnfolder]: For 83/89 co-relation queries the response was YES. [2021-12-28 02:51:07,646 INFO L84 FinitePrefix]: Finished finitePrefix Result has 202 conditions, 95 events. 6/95 cut-off events. For 83/89 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 89 event pairs, 0 based on Foata normal form. 1/95 useless extension candidates. Maximal degree in co-relation 174. Up to 11 conditions per place. [2021-12-28 02:51:07,647 INFO L132 encePairwiseOnDemand]: 87/93 looper letters, 0 selfloop transitions, 0 changer transitions 79/79 dead transitions. [2021-12-28 02:51:07,647 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 79 transitions, 308 flow [2021-12-28 02:51:07,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-28 02:51:07,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-12-28 02:51:07,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 546 transitions. [2021-12-28 02:51:07,649 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8387096774193549 [2021-12-28 02:51:07,649 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 546 transitions. [2021-12-28 02:51:07,649 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 546 transitions. [2021-12-28 02:51:07,649 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-28 02:51:07,649 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 546 transitions. [2021-12-28 02:51:07,651 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 78.0) internal successors, (546), 7 states have internal predecessors, (546), 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) [2021-12-28 02:51:07,652 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 93.0) internal successors, (744), 8 states have internal predecessors, (744), 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) [2021-12-28 02:51:07,652 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 93.0) internal successors, (744), 8 states have internal predecessors, (744), 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) [2021-12-28 02:51:07,660 INFO L186 Difference]: Start difference. First operand has 107 places, 80 transitions, 282 flow. Second operand 7 states and 546 transitions. [2021-12-28 02:51:07,660 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 79 transitions, 308 flow [2021-12-28 02:51:07,662 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 79 transitions, 226 flow, removed 22 selfloop flow, removed 15 redundant places. [2021-12-28 02:51:07,662 INFO L242 Difference]: Finished difference. Result has 92 places, 0 transitions, 0 flow [2021-12-28 02:51:07,663 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=93, PETRI_DIFFERENCE_MINUEND_FLOW=196, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=92, PETRI_TRANSITIONS=0} [2021-12-28 02:51:07,663 INFO L334 CegarLoopForPetriNet]: 85 programPoint places, 7 predicate places. [2021-12-28 02:51:07,663 INFO L470 AbstractCegarLoop]: Abstraction has has 92 places, 0 transitions, 0 flow [2021-12-28 02:51:07,664 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 77.85714285714286) internal successors, (545), 7 states have internal predecessors, (545), 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) [2021-12-28 02:51:07,666 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2021-12-28 02:51:07,667 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION (2 of 4 remaining) [2021-12-28 02:51:07,667 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION (1 of 4 remaining) [2021-12-28 02:51:07,667 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATION (0 of 4 remaining) [2021-12-28 02:51:07,668 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-28 02:51:07,687 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 02:51:07,689 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-12-28 02:51:07,689 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-28 02:51:07,692 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.12 02:51:07 BasicIcfg [2021-12-28 02:51:07,692 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-28 02:51:07,692 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-28 02:51:07,692 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-28 02:51:07,693 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-28 02:51:07,693 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 02:51:04" (3/4) ... [2021-12-28 02:51:07,695 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-12-28 02:51:07,701 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2021-12-28 02:51:07,710 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2021-12-28 02:51:07,710 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2021-12-28 02:51:07,714 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2021-12-28 02:51:07,727 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-12-28 02:51:07,727 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-12-28 02:51:07,728 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-12-28 02:51:07,753 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-12-28 02:51:07,753 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-28 02:51:07,754 INFO L158 Benchmark]: Toolchain (without parser) took 4316.49ms. Allocated memory was 48.2MB in the beginning and 142.6MB in the end (delta: 94.4MB). Free memory was 22.8MB in the beginning and 89.0MB in the end (delta: -66.2MB). Peak memory consumption was 28.6MB. Max. memory is 16.1GB. [2021-12-28 02:51:07,754 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 48.2MB. Free memory was 30.7MB in the beginning and 30.7MB in the end (delta: 30.0kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-28 02:51:07,754 INFO L158 Benchmark]: CACSL2BoogieTranslator took 421.55ms. Allocated memory was 48.2MB in the beginning and 67.1MB in the end (delta: 18.9MB). Free memory was 22.5MB in the beginning and 40.0MB in the end (delta: -17.5MB). Peak memory consumption was 5.9MB. Max. memory is 16.1GB. [2021-12-28 02:51:07,755 INFO L158 Benchmark]: Boogie Procedure Inliner took 48.48ms. Allocated memory is still 67.1MB. Free memory was 40.0MB in the beginning and 38.1MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-28 02:51:07,755 INFO L158 Benchmark]: Boogie Preprocessor took 44.66ms. Allocated memory is still 67.1MB. Free memory was 38.1MB in the beginning and 36.7MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-28 02:51:07,755 INFO L158 Benchmark]: RCFGBuilder took 367.67ms. Allocated memory is still 67.1MB. Free memory was 36.7MB in the beginning and 39.8MB in the end (delta: -3.1MB). Peak memory consumption was 5.6MB. Max. memory is 16.1GB. [2021-12-28 02:51:07,756 INFO L158 Benchmark]: TraceAbstraction took 3367.52ms. Allocated memory was 67.1MB in the beginning and 142.6MB in the end (delta: 75.5MB). Free memory was 39.2MB in the beginning and 92.1MB in the end (delta: -52.9MB). Peak memory consumption was 20.8MB. Max. memory is 16.1GB. [2021-12-28 02:51:07,756 INFO L158 Benchmark]: Witness Printer took 61.02ms. Allocated memory is still 142.6MB. Free memory was 92.1MB in the beginning and 89.0MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-12-28 02:51:07,757 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 48.2MB. Free memory was 30.7MB in the beginning and 30.7MB in the end (delta: 30.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 421.55ms. Allocated memory was 48.2MB in the beginning and 67.1MB in the end (delta: 18.9MB). Free memory was 22.5MB in the beginning and 40.0MB in the end (delta: -17.5MB). Peak memory consumption was 5.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 48.48ms. Allocated memory is still 67.1MB. Free memory was 40.0MB in the beginning and 38.1MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 44.66ms. Allocated memory is still 67.1MB. Free memory was 38.1MB in the beginning and 36.7MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 367.67ms. Allocated memory is still 67.1MB. Free memory was 36.7MB in the beginning and 39.8MB in the end (delta: -3.1MB). Peak memory consumption was 5.6MB. Max. memory is 16.1GB. * TraceAbstraction took 3367.52ms. Allocated memory was 67.1MB in the beginning and 142.6MB in the end (delta: 75.5MB). Free memory was 39.2MB in the beginning and 92.1MB in the end (delta: -52.9MB). Peak memory consumption was 20.8MB. Max. memory is 16.1GB. * Witness Printer took 61.02ms. Allocated memory is still 142.6MB. Free memory was 92.1MB in the beginning and 89.0MB in the end (delta: 3.1MB). 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: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 116 locations, 4 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: 3.3s, OverallIterations: 11, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 360 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 360 mSDsluCounter, 546 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 539 mSDsCounter, 64 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 581 IncrementalHoareTripleChecker+Invalid, 645 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 64 mSolverCounterUnsat, 133 mSDtfsCounter, 581 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 152 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 130 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 195 ImplicationChecksByTransitivity, 1.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=450occurred in iteration=5, InterpolantAutomatonStates: 120, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 678 NumberOfCodeBlocks, 678 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 667 ConstructedInterpolants, 0 QuantifiedInterpolants, 2509 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 11 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-12-28 02:51:07,796 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