./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-ext/06_ticket.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f4b24e32 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-ext/06_ticket.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 d21b75ab9211f19b3beb5c83d6d66f0a0906e2f271e4621d3ded70db8a63bb33 --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-13 21:40:52,398 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 21:40:52,400 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 21:40:52,431 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 21:40:52,432 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 21:40:52,433 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 21:40:52,434 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 21:40:52,436 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 21:40:52,437 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 21:40:52,440 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 21:40:52,441 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 21:40:52,442 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 21:40:52,443 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 21:40:52,444 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 21:40:52,445 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 21:40:52,447 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 21:40:52,447 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 21:40:52,449 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 21:40:52,449 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 21:40:52,454 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 21:40:52,456 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 21:40:52,456 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 21:40:52,457 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 21:40:52,457 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 21:40:52,459 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 21:40:52,463 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 21:40:52,464 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 21:40:52,464 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 21:40:52,464 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 21:40:52,465 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 21:40:52,465 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 21:40:52,466 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 21:40:52,467 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 21:40:52,467 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 21:40:52,468 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 21:40:52,468 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 21:40:52,468 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 21:40:52,469 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 21:40:52,469 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 21:40:52,469 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 21:40:52,470 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 21:40:52,471 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 21:40:52,472 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-13 21:40:52,493 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 21:40:52,494 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 21:40:52,494 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 21:40:52,494 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 21:40:52,495 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-13 21:40:52,495 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-13 21:40:52,495 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 21:40:52,495 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 21:40:52,495 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 21:40:52,496 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 21:40:52,496 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-13 21:40:52,496 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-13 21:40:52,497 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-13 21:40:52,497 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 21:40:52,497 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-13 21:40:52,497 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-13 21:40:52,497 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-13 21:40:52,497 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-13 21:40:52,497 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 21:40:52,498 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 21:40:52,498 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-13 21:40:52,499 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 21:40:52,499 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 21:40:52,499 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-13 21:40:52,499 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 21:40:52,499 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 21:40:52,499 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-13 21:40:52,499 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-13 21:40:52,500 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-13 21:40:52,500 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-13 21:40:52,500 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-13 21:40:52,500 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-13 21:40:52,500 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-13 21:40:52,500 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d21b75ab9211f19b3beb5c83d6d66f0a0906e2f271e4621d3ded70db8a63bb33 [2022-07-13 21:40:52,664 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 21:40:52,693 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 21:40:52,695 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 21:40:52,696 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 21:40:52,696 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 21:40:52,697 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-ext/06_ticket.i [2022-07-13 21:40:52,748 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0b13c7538/43f856ac3fff4243ba85701b45d4bdf6/FLAG933b370b5 [2022-07-13 21:40:53,143 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 21:40:53,151 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/06_ticket.i [2022-07-13 21:40:53,163 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0b13c7538/43f856ac3fff4243ba85701b45d4bdf6/FLAG933b370b5 [2022-07-13 21:40:53,171 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0b13c7538/43f856ac3fff4243ba85701b45d4bdf6 [2022-07-13 21:40:53,173 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 21:40:53,174 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 21:40:53,175 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 21:40:53,175 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 21:40:53,177 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 21:40:53,178 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 09:40:53" (1/1) ... [2022-07-13 21:40:53,178 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61970b6f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:40:53, skipping insertion in model container [2022-07-13 21:40:53,179 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 09:40:53" (1/1) ... [2022-07-13 21:40:53,184 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 21:40:53,211 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 21:40:53,421 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-ext/06_ticket.i[30728,30741] [2022-07-13 21:40:53,426 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 21:40:53,433 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 21:40:53,476 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-ext/06_ticket.i[30728,30741] [2022-07-13 21:40:53,484 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 21:40:53,514 INFO L208 MainTranslator]: Completed translation [2022-07-13 21:40:53,515 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:40:53 WrapperNode [2022-07-13 21:40:53,515 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 21:40:53,516 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 21:40:53,516 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 21:40:53,517 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 21:40:53,524 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:40:53" (1/1) ... [2022-07-13 21:40:53,551 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:40:53" (1/1) ... [2022-07-13 21:40:53,577 INFO L137 Inliner]: procedures = 172, calls = 16, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 68 [2022-07-13 21:40:53,577 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 21:40:53,578 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 21:40:53,578 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 21:40:53,578 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 21:40:53,583 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:40:53" (1/1) ... [2022-07-13 21:40:53,583 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:40:53" (1/1) ... [2022-07-13 21:40:53,585 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:40:53" (1/1) ... [2022-07-13 21:40:53,585 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:40:53" (1/1) ... [2022-07-13 21:40:53,592 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:40:53" (1/1) ... [2022-07-13 21:40:53,603 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:40:53" (1/1) ... [2022-07-13 21:40:53,604 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:40:53" (1/1) ... [2022-07-13 21:40:53,607 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 21:40:53,607 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 21:40:53,607 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 21:40:53,608 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 21:40:53,608 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:40:53" (1/1) ... [2022-07-13 21:40:53,616 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 21:40:53,625 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 21:40:53,675 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-13 21:40:53,681 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-13 21:40:53,714 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2022-07-13 21:40:53,714 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2022-07-13 21:40:53,715 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-13 21:40:53,715 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-07-13 21:40:53,715 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-13 21:40:53,715 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-13 21:40:53,715 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-13 21:40:53,715 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-13 21:40:53,715 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-07-13 21:40:53,715 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 21:40:53,716 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 21:40:53,717 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-07-13 21:40:53,791 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 21:40:53,792 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 21:40:56,072 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 21:40:56,089 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 21:40:56,089 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-07-13 21:40:56,090 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 09:40:56 BoogieIcfgContainer [2022-07-13 21:40:56,091 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 21:40:56,092 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-13 21:40:56,092 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-13 21:40:56,096 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-13 21:40:56,096 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 09:40:53" (1/3) ... [2022-07-13 21:40:56,097 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7271e11d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 09:40:56, skipping insertion in model container [2022-07-13 21:40:56,097 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:40:53" (2/3) ... [2022-07-13 21:40:56,097 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7271e11d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 09:40:56, skipping insertion in model container [2022-07-13 21:40:56,097 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 09:40:56" (3/3) ... [2022-07-13 21:40:56,098 INFO L111 eAbstractionObserver]: Analyzing ICFG 06_ticket.i [2022-07-13 21:40:56,102 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-13 21:40:56,108 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-13 21:40:56,109 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-13 21:40:56,109 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-13 21:40:56,155 INFO L135 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-07-13 21:40:56,193 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 75 places, 79 transitions, 163 flow [2022-07-13 21:40:56,239 INFO L129 PetriNetUnfolder]: 8/90 cut-off events. [2022-07-13 21:40:56,240 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-07-13 21:40:56,243 INFO L84 FinitePrefix]: Finished finitePrefix Result has 95 conditions, 90 events. 8/90 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 87 event pairs, 0 based on Foata normal form. 0/79 useless extension candidates. Maximal degree in co-relation 61. Up to 4 conditions per place. [2022-07-13 21:40:56,243 INFO L82 GeneralOperation]: Start removeDead. Operand has 75 places, 79 transitions, 163 flow [2022-07-13 21:40:56,246 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 75 places, 79 transitions, 163 flow [2022-07-13 21:40:56,252 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 21:40:56,256 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@1f5da6e7, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@5b430152 [2022-07-13 21:40:56,257 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-07-13 21:40:56,263 INFO L129 PetriNetUnfolder]: 2/45 cut-off events. [2022-07-13 21:40:56,263 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-07-13 21:40:56,264 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 21:40:56,264 INFO L200 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:40:56,264 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:40:56,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:40:56,268 INFO L85 PathProgramCache]: Analyzing trace with hash -1427749551, now seen corresponding path program 1 times [2022-07-13 21:40:56,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:40:56,274 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [719640691] [2022-07-13 21:40:56,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:40:56,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:40:56,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 21:40:56,366 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-13 21:40:56,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 21:40:56,422 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-13 21:40:56,427 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-13 21:40:56,428 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 3 remaining) [2022-07-13 21:40:56,431 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 3 remaining) [2022-07-13 21:40:56,431 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 3 remaining) [2022-07-13 21:40:56,432 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-13 21:40:56,432 INFO L356 BasicCegarLoop]: Path program histogram: [1] [2022-07-13 21:40:56,438 WARN L231 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-07-13 21:40:56,438 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-07-13 21:40:56,471 INFO L135 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-07-13 21:40:56,477 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 120 places, 128 transitions, 268 flow [2022-07-13 21:40:56,502 INFO L129 PetriNetUnfolder]: 15/152 cut-off events. [2022-07-13 21:40:56,506 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-07-13 21:40:56,509 INFO L84 FinitePrefix]: Finished finitePrefix Result has 162 conditions, 152 events. 15/152 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 282 event pairs, 0 based on Foata normal form. 0/132 useless extension candidates. Maximal degree in co-relation 109. Up to 6 conditions per place. [2022-07-13 21:40:56,509 INFO L82 GeneralOperation]: Start removeDead. Operand has 120 places, 128 transitions, 268 flow [2022-07-13 21:40:56,512 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 120 places, 128 transitions, 268 flow [2022-07-13 21:40:56,514 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 21:40:56,515 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@1f5da6e7, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@5b430152 [2022-07-13 21:40:56,515 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-07-13 21:40:56,535 INFO L129 PetriNetUnfolder]: 3/72 cut-off events. [2022-07-13 21:40:56,535 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-07-13 21:40:56,535 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 21:40:56,536 INFO L200 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:40:56,536 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-07-13 21:40:56,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:40:56,537 INFO L85 PathProgramCache]: Analyzing trace with hash -850813562, now seen corresponding path program 1 times [2022-07-13 21:40:56,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:40:56,537 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280142780] [2022-07-13 21:40:56,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:40:56,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:40:56,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 21:40:56,581 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-13 21:40:56,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 21:40:56,599 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-13 21:40:56,599 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-13 21:40:56,600 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 4 remaining) [2022-07-13 21:40:56,600 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 4 remaining) [2022-07-13 21:40:56,600 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 4 remaining) [2022-07-13 21:40:56,600 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 4 remaining) [2022-07-13 21:40:56,600 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-13 21:40:56,600 INFO L356 BasicCegarLoop]: Path program histogram: [1] [2022-07-13 21:40:56,601 WARN L231 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-07-13 21:40:56,601 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-07-13 21:40:56,630 INFO L135 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-07-13 21:40:56,636 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 165 places, 177 transitions, 375 flow [2022-07-13 21:40:56,690 INFO L129 PetriNetUnfolder]: 22/214 cut-off events. [2022-07-13 21:40:56,690 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2022-07-13 21:40:56,695 INFO L84 FinitePrefix]: Finished finitePrefix Result has 230 conditions, 214 events. 22/214 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 556 event pairs, 0 based on Foata normal form. 0/185 useless extension candidates. Maximal degree in co-relation 157. Up to 8 conditions per place. [2022-07-13 21:40:56,695 INFO L82 GeneralOperation]: Start removeDead. Operand has 165 places, 177 transitions, 375 flow [2022-07-13 21:40:56,699 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 165 places, 177 transitions, 375 flow [2022-07-13 21:40:56,700 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 21:40:56,704 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@1f5da6e7, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@5b430152 [2022-07-13 21:40:56,705 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-07-13 21:40:56,718 INFO L129 PetriNetUnfolder]: 9/121 cut-off events. [2022-07-13 21:40:56,718 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2022-07-13 21:40:56,718 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 21:40:56,719 INFO L200 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:40:56,720 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-07-13 21:40:56,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:40:56,721 INFO L85 PathProgramCache]: Analyzing trace with hash -766780624, now seen corresponding path program 1 times [2022-07-13 21:40:56,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:40:56,723 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [305916871] [2022-07-13 21:40:56,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:40:56,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:40:56,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 21:40:56,753 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-13 21:40:56,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 21:40:56,775 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-13 21:40:56,776 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-13 21:40:56,776 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2022-07-13 21:40:56,776 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2022-07-13 21:40:56,776 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 5 remaining) [2022-07-13 21:40:56,776 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 5 remaining) [2022-07-13 21:40:56,777 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 5 remaining) [2022-07-13 21:40:56,777 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-13 21:40:56,777 INFO L356 BasicCegarLoop]: Path program histogram: [1] [2022-07-13 21:40:56,778 WARN L231 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2022-07-13 21:40:56,778 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2022-07-13 21:40:56,806 INFO L135 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-07-13 21:40:56,811 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 210 places, 226 transitions, 484 flow [2022-07-13 21:40:56,844 INFO L129 PetriNetUnfolder]: 29/276 cut-off events. [2022-07-13 21:40:56,844 INFO L130 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2022-07-13 21:40:56,849 INFO L84 FinitePrefix]: Finished finitePrefix Result has 299 conditions, 276 events. 29/276 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 832 event pairs, 0 based on Foata normal form. 0/238 useless extension candidates. Maximal degree in co-relation 222. Up to 10 conditions per place. [2022-07-13 21:40:56,849 INFO L82 GeneralOperation]: Start removeDead. Operand has 210 places, 226 transitions, 484 flow [2022-07-13 21:40:56,853 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 210 places, 226 transitions, 484 flow [2022-07-13 21:40:56,855 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 21:40:56,856 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@1f5da6e7, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@5b430152 [2022-07-13 21:40:56,859 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2022-07-13 21:40:56,869 INFO L129 PetriNetUnfolder]: 11/126 cut-off events. [2022-07-13 21:40:56,870 INFO L130 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2022-07-13 21:40:56,870 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 21:40:56,870 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:40:56,871 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-07-13 21:40:56,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:40:56,871 INFO L85 PathProgramCache]: Analyzing trace with hash 584646042, now seen corresponding path program 1 times [2022-07-13 21:40:56,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:40:56,871 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007365401] [2022-07-13 21:40:56,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:40:56,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:40:56,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:40:56,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:40:56,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:40:56,977 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2007365401] [2022-07-13 21:40:56,977 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2007365401] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:40:56,977 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:40:56,978 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-13 21:40:56,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569769735] [2022-07-13 21:40:56,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:40:56,983 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-13 21:40:56,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:40:57,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-13 21:40:57,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-13 21:40:57,014 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 196 out of 226 [2022-07-13 21:40:57,021 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 226 transitions, 484 flow. Second operand has 2 states, 2 states have (on average 197.5) internal successors, (395), 2 states have internal predecessors, (395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:40:57,021 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 21:40:57,022 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 196 of 226 [2022-07-13 21:40:57,023 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 21:40:59,058 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-13 21:41:01,234 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-13 21:41:01,492 INFO L129 PetriNetUnfolder]: 64/812 cut-off events. [2022-07-13 21:41:01,492 INFO L130 PetriNetUnfolder]: For 159/159 co-relation queries the response was YES. [2022-07-13 21:41:01,498 INFO L84 FinitePrefix]: Finished finitePrefix Result has 978 conditions, 812 events. 64/812 cut-off events. For 159/159 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 5125 event pairs, 34 based on Foata normal form. 164/909 useless extension candidates. Maximal degree in co-relation 441. Up to 65 conditions per place. [2022-07-13 21:41:01,502 INFO L132 encePairwiseOnDemand]: 208/226 looper letters, 8 selfloop transitions, 0 changer transitions 0/199 dead transitions. [2022-07-13 21:41:01,503 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 199 transitions, 446 flow [2022-07-13 21:41:01,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-13 21:41:01,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-07-13 21:41:01,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 418 transitions. [2022-07-13 21:41:01,517 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9247787610619469 [2022-07-13 21:41:01,517 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 418 transitions. [2022-07-13 21:41:01,518 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 418 transitions. [2022-07-13 21:41:01,521 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 21:41:01,523 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 418 transitions. [2022-07-13 21:41:01,527 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 209.0) internal successors, (418), 2 states have internal predecessors, (418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:41:01,533 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 226.0) internal successors, (678), 3 states have internal predecessors, (678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:41:01,534 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 226.0) internal successors, (678), 3 states have internal predecessors, (678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:41:01,535 INFO L186 Difference]: Start difference. First operand has 210 places, 226 transitions, 484 flow. Second operand 2 states and 418 transitions. [2022-07-13 21:41:01,536 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 199 transitions, 446 flow [2022-07-13 21:41:01,541 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 199 transitions, 434 flow, removed 6 selfloop flow, removed 0 redundant places. [2022-07-13 21:41:01,546 INFO L242 Difference]: Finished difference. Result has 201 places, 199 transitions, 418 flow [2022-07-13 21:41:01,548 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=226, PETRI_DIFFERENCE_MINUEND_FLOW=418, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=199, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=199, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=418, PETRI_PLACES=201, PETRI_TRANSITIONS=199} [2022-07-13 21:41:01,550 INFO L279 CegarLoopForPetriNet]: 210 programPoint places, -9 predicate places. [2022-07-13 21:41:01,551 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 199 transitions, 418 flow [2022-07-13 21:41:01,551 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 197.5) internal successors, (395), 2 states have internal predecessors, (395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:41:01,551 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 21:41:01,551 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:41:01,551 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-13 21:41:01,552 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-07-13 21:41:01,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:41:01,552 INFO L85 PathProgramCache]: Analyzing trace with hash -836950257, now seen corresponding path program 1 times [2022-07-13 21:41:01,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:41:01,553 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [357022741] [2022-07-13 21:41:01,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:41:01,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:41:01,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:41:01,655 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:41:01,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:41:01,656 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [357022741] [2022-07-13 21:41:01,656 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [357022741] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:41:01,656 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:41:01,656 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 21:41:01,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806155698] [2022-07-13 21:41:01,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:41:01,657 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 21:41:01,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:41:01,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 21:41:01,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-13 21:41:01,660 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 170 out of 226 [2022-07-13 21:41:01,661 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 199 transitions, 418 flow. Second operand has 5 states, 5 states have (on average 171.4) internal successors, (857), 5 states have internal predecessors, (857), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:41:01,661 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 21:41:01,661 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 170 of 226 [2022-07-13 21:41:01,661 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 21:41:03,688 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-13 21:41:05,876 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-13 21:41:08,085 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-13 21:41:10,315 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-13 21:41:15,698 INFO L129 PetriNetUnfolder]: 21335/51948 cut-off events. [2022-07-13 21:41:15,698 INFO L130 PetriNetUnfolder]: For 2923/2923 co-relation queries the response was YES. [2022-07-13 21:41:16,039 INFO L84 FinitePrefix]: Finished finitePrefix Result has 83976 conditions, 51948 events. 21335/51948 cut-off events. For 2923/2923 co-relation queries the response was YES. Maximal size of possible extension queue 1705. Compared 619119 event pairs, 7287 based on Foata normal form. 0/47624 useless extension candidates. Maximal degree in co-relation 83969. Up to 20729 conditions per place. [2022-07-13 21:41:16,481 INFO L132 encePairwiseOnDemand]: 203/226 looper letters, 55 selfloop transitions, 29 changer transitions 0/249 dead transitions. [2022-07-13 21:41:16,481 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 249 transitions, 746 flow [2022-07-13 21:41:16,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-13 21:41:16,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-07-13 21:41:16,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1108 transitions. [2022-07-13 21:41:16,484 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8171091445427728 [2022-07-13 21:41:16,484 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1108 transitions. [2022-07-13 21:41:16,484 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1108 transitions. [2022-07-13 21:41:16,485 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 21:41:16,488 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1108 transitions. [2022-07-13 21:41:16,490 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 184.66666666666666) internal successors, (1108), 6 states have internal predecessors, (1108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:41:16,493 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 226.0) internal successors, (1582), 7 states have internal predecessors, (1582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:41:16,494 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 226.0) internal successors, (1582), 7 states have internal predecessors, (1582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:41:16,494 INFO L186 Difference]: Start difference. First operand has 201 places, 199 transitions, 418 flow. Second operand 6 states and 1108 transitions. [2022-07-13 21:41:16,494 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 249 transitions, 746 flow [2022-07-13 21:41:16,500 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 206 places, 249 transitions, 746 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-07-13 21:41:16,505 INFO L242 Difference]: Finished difference. Result has 210 places, 227 transitions, 629 flow [2022-07-13 21:41:16,505 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=226, PETRI_DIFFERENCE_MINUEND_FLOW=418, PETRI_DIFFERENCE_MINUEND_PLACES=201, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=199, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=629, PETRI_PLACES=210, PETRI_TRANSITIONS=227} [2022-07-13 21:41:16,507 INFO L279 CegarLoopForPetriNet]: 210 programPoint places, 0 predicate places. [2022-07-13 21:41:16,511 INFO L495 AbstractCegarLoop]: Abstraction has has 210 places, 227 transitions, 629 flow [2022-07-13 21:41:16,511 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 171.4) internal successors, (857), 5 states have internal predecessors, (857), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:41:16,511 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 21:41:16,511 INFO L200 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:41:16,512 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-13 21:41:16,512 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-07-13 21:41:16,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:41:16,512 INFO L85 PathProgramCache]: Analyzing trace with hash -1551430632, now seen corresponding path program 1 times [2022-07-13 21:41:16,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:41:16,513 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [889006776] [2022-07-13 21:41:16,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:41:16,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:41:16,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 21:41:16,537 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-13 21:41:16,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 21:41:16,565 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-13 21:41:16,566 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-13 21:41:16,567 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 6 remaining) [2022-07-13 21:41:16,567 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (4 of 6 remaining) [2022-07-13 21:41:16,567 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (3 of 6 remaining) [2022-07-13 21:41:16,567 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 6 remaining) [2022-07-13 21:41:16,567 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 6 remaining) [2022-07-13 21:41:16,567 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 6 remaining) [2022-07-13 21:41:16,568 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-13 21:41:16,568 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-07-13 21:41:16,568 WARN L231 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2022-07-13 21:41:16,568 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2022-07-13 21:41:16,597 INFO L135 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-07-13 21:41:16,599 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 255 places, 275 transitions, 595 flow [2022-07-13 21:41:16,645 INFO L129 PetriNetUnfolder]: 36/338 cut-off events. [2022-07-13 21:41:16,646 INFO L130 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2022-07-13 21:41:16,650 INFO L84 FinitePrefix]: Finished finitePrefix Result has 369 conditions, 338 events. 36/338 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1120 event pairs, 0 based on Foata normal form. 0/291 useless extension candidates. Maximal degree in co-relation 289. Up to 12 conditions per place. [2022-07-13 21:41:16,650 INFO L82 GeneralOperation]: Start removeDead. Operand has 255 places, 275 transitions, 595 flow [2022-07-13 21:41:16,653 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 255 places, 275 transitions, 595 flow [2022-07-13 21:41:16,655 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 21:41:16,659 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@1f5da6e7, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@5b430152 [2022-07-13 21:41:16,660 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2022-07-13 21:41:16,669 INFO L129 PetriNetUnfolder]: 10/123 cut-off events. [2022-07-13 21:41:16,669 INFO L130 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2022-07-13 21:41:16,669 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 21:41:16,669 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:41:16,669 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-07-13 21:41:16,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:41:16,670 INFO L85 PathProgramCache]: Analyzing trace with hash 1234181593, now seen corresponding path program 1 times [2022-07-13 21:41:16,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:41:16,670 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586296138] [2022-07-13 21:41:16,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:41:16,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:41:16,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:41:16,706 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:41:16,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:41:16,707 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [586296138] [2022-07-13 21:41:16,707 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [586296138] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:41:16,707 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:41:16,707 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-13 21:41:16,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406060181] [2022-07-13 21:41:16,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:41:16,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-13 21:41:16,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:41:16,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-13 21:41:16,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-13 21:41:16,709 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 238 out of 275 [2022-07-13 21:41:16,709 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 255 places, 275 transitions, 595 flow. Second operand has 2 states, 2 states have (on average 239.5) internal successors, (479), 2 states have internal predecessors, (479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:41:16,709 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 21:41:16,709 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 238 of 275 [2022-07-13 21:41:16,710 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 21:41:18,727 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-13 21:41:20,893 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-13 21:41:23,085 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-13 21:41:23,239 INFO L129 PetriNetUnfolder]: 160/1684 cut-off events. [2022-07-13 21:41:23,240 INFO L130 PetriNetUnfolder]: For 511/511 co-relation queries the response was YES. [2022-07-13 21:41:23,263 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2091 conditions, 1684 events. 160/1684 cut-off events. For 511/511 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 13415 event pairs, 98 based on Foata normal form. 420/1965 useless extension candidates. Maximal degree in co-relation 981. Up to 161 conditions per place. [2022-07-13 21:41:23,271 INFO L132 encePairwiseOnDemand]: 253/275 looper letters, 10 selfloop transitions, 0 changer transitions 0/243 dead transitions. [2022-07-13 21:41:23,271 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 243 transitions, 551 flow [2022-07-13 21:41:23,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-13 21:41:23,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-07-13 21:41:23,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 508 transitions. [2022-07-13 21:41:23,440 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9236363636363636 [2022-07-13 21:41:23,440 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 508 transitions. [2022-07-13 21:41:23,440 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 508 transitions. [2022-07-13 21:41:23,441 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 21:41:23,441 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 508 transitions. [2022-07-13 21:41:23,441 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 254.0) internal successors, (508), 2 states have internal predecessors, (508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:41:23,442 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 275.0) internal successors, (825), 3 states have internal predecessors, (825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:41:23,443 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 275.0) internal successors, (825), 3 states have internal predecessors, (825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:41:23,443 INFO L186 Difference]: Start difference. First operand has 255 places, 275 transitions, 595 flow. Second operand 2 states and 508 transitions. [2022-07-13 21:41:23,443 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 243 transitions, 551 flow [2022-07-13 21:41:23,445 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 245 places, 243 transitions, 531 flow, removed 10 selfloop flow, removed 0 redundant places. [2022-07-13 21:41:23,447 INFO L242 Difference]: Finished difference. Result has 245 places, 243 transitions, 511 flow [2022-07-13 21:41:23,447 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=275, PETRI_DIFFERENCE_MINUEND_FLOW=511, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=243, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=243, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=511, PETRI_PLACES=245, PETRI_TRANSITIONS=243} [2022-07-13 21:41:23,451 INFO L279 CegarLoopForPetriNet]: 255 programPoint places, -10 predicate places. [2022-07-13 21:41:23,452 INFO L495 AbstractCegarLoop]: Abstraction has has 245 places, 243 transitions, 511 flow [2022-07-13 21:41:23,452 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 239.5) internal successors, (479), 2 states have internal predecessors, (479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:41:23,452 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 21:41:23,452 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:41:23,453 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-13 21:41:23,453 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-07-13 21:41:23,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:41:23,453 INFO L85 PathProgramCache]: Analyzing trace with hash -433374094, now seen corresponding path program 1 times [2022-07-13 21:41:23,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:41:23,453 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083387371] [2022-07-13 21:41:23,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:41:23,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:41:23,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:41:23,510 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:41:23,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:41:23,510 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2083387371] [2022-07-13 21:41:23,511 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2083387371] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:41:23,511 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:41:23,511 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 21:41:23,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996434605] [2022-07-13 21:41:23,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:41:23,512 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 21:41:23,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:41:23,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 21:41:23,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-13 21:41:23,514 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 206 out of 275 [2022-07-13 21:41:23,515 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 243 transitions, 511 flow. Second operand has 5 states, 5 states have (on average 207.4) internal successors, (1037), 5 states have internal predecessors, (1037), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:41:23,515 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 21:41:23,515 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 206 of 275 [2022-07-13 21:41:23,515 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 21:41:25,529 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-13 21:41:27,680 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-13 21:41:29,847 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-13 21:41:32,027 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.18s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-13 21:41:34,185 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-13 21:41:36,339 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-13 21:41:38,542 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-13 21:41:40,792 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-13 21:41:43,000 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []