/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf --traceabstraction.use.on-demand.petri.net.difference true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/mix008_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.repeated-lipton-a802222-m [2022-12-12 18:31:51,304 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-12 18:31:51,306 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-12 18:31:51,377 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-12 18:31:51,378 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-12 18:31:51,380 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-12 18:31:51,382 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-12 18:31:51,383 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-12 18:31:51,384 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-12 18:31:51,384 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-12 18:31:51,385 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-12 18:31:51,386 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-12 18:31:51,386 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-12 18:31:51,387 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-12 18:31:51,387 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-12 18:31:51,388 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-12 18:31:51,388 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-12 18:31:51,389 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-12 18:31:51,390 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-12 18:31:51,391 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-12 18:31:51,392 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-12 18:31:51,392 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-12 18:31:51,393 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-12 18:31:51,394 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-12 18:31:51,396 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-12 18:31:51,396 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-12 18:31:51,396 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-12 18:31:51,396 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-12 18:31:51,397 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-12 18:31:51,397 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-12 18:31:51,397 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-12 18:31:51,398 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-12 18:31:51,398 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-12 18:31:51,399 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-12 18:31:51,399 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-12 18:31:51,400 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-12 18:31:51,400 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-12 18:31:51,400 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-12 18:31:51,400 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-12 18:31:51,401 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-12 18:31:51,401 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-12 18:31:51,402 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf [2022-12-12 18:31:51,418 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-12 18:31:51,419 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-12 18:31:51,420 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-12 18:31:51,420 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-12 18:31:51,421 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-12 18:31:51,421 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-12 18:31:51,421 INFO L138 SettingsManager]: * Use SBE=true [2022-12-12 18:31:51,421 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-12 18:31:51,422 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-12 18:31:51,422 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-12 18:31:51,422 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-12 18:31:51,422 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-12 18:31:51,422 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-12 18:31:51,423 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-12 18:31:51,423 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-12 18:31:51,423 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-12 18:31:51,423 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-12 18:31:51,423 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-12 18:31:51,423 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-12 18:31:51,423 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-12 18:31:51,423 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-12 18:31:51,423 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-12-12 18:31:51,423 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-12 18:31:51,424 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-12 18:31:51,424 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-12 18:31:51,424 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-12 18:31:51,424 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-12 18:31:51,424 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-12 18:31:51,424 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-12 18:31:51,424 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-12 18:31:51,424 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use on-demand Petri net difference -> true [2022-12-12 18:31:51,737 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-12 18:31:51,759 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-12 18:31:51,761 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-12 18:31:51,762 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-12 18:31:51,762 INFO L275 PluginConnector]: CDTParser initialized [2022-12-12 18:31:51,764 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix008_tso.oepc.i [2022-12-12 18:31:52,783 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-12 18:31:53,100 INFO L351 CDTParser]: Found 1 translation units. [2022-12-12 18:31:53,100 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix008_tso.oepc.i [2022-12-12 18:31:53,129 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e3d8b921e/bb560abadd324ee490f122c0380a4bf4/FLAG0b81d1c10 [2022-12-12 18:31:53,142 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e3d8b921e/bb560abadd324ee490f122c0380a4bf4 [2022-12-12 18:31:53,144 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-12 18:31:53,145 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-12-12 18:31:53,146 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-12 18:31:53,146 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-12 18:31:53,148 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-12 18:31:53,148 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.12 06:31:53" (1/1) ... [2022-12-12 18:31:53,149 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7bc59d7e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 06:31:53, skipping insertion in model container [2022-12-12 18:31:53,149 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.12 06:31:53" (1/1) ... [2022-12-12 18:31:53,153 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-12 18:31:53,198 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-12 18:31:53,326 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix008_tso.oepc.i[949,962] [2022-12-12 18:31:53,459 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 18:31:53,459 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 18:31:53,460 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 18:31:53,460 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 18:31:53,460 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 18:31:53,460 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 18:31:53,460 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 18:31:53,461 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 18:31:53,462 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 18:31:53,462 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 18:31:53,462 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 18:31:53,462 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 18:31:53,462 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 18:31:53,468 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 18:31:53,468 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 18:31:53,468 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 18:31:53,469 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 18:31:53,471 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 18:31:53,471 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 18:31:53,487 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 18:31:53,488 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 18:31:53,497 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 18:31:53,498 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 18:31:53,500 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 18:31:53,500 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 18:31:53,500 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 18:31:53,501 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 18:31:53,502 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 18:31:53,502 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 18:31:53,506 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 18:31:53,507 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 18:31:53,507 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 18:31:53,507 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 18:31:53,509 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 18:31:53,510 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 18:31:53,510 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 18:31:53,521 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 18:31:53,522 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 18:31:53,522 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 18:31:53,524 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 18:31:53,524 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 18:31:53,528 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 18:31:53,529 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-12 18:31:53,537 INFO L203 MainTranslator]: Completed pre-run [2022-12-12 18:31:53,556 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix008_tso.oepc.i[949,962] [2022-12-12 18:31:53,577 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 18:31:53,577 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 18:31:53,577 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 18:31:53,577 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 18:31:53,577 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 18:31:53,578 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 18:31:53,578 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 18:31:53,578 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 18:31:53,578 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 18:31:53,578 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 18:31:53,578 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 18:31:53,579 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 18:31:53,579 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 18:31:53,596 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 18:31:53,597 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 18:31:53,597 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 18:31:53,597 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 18:31:53,598 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 18:31:53,598 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 18:31:53,600 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 18:31:53,601 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 18:31:53,603 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 18:31:53,603 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 18:31:53,604 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 18:31:53,604 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 18:31:53,604 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 18:31:53,605 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 18:31:53,605 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 18:31:53,605 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 18:31:53,608 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 18:31:53,608 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 18:31:53,608 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 18:31:53,608 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 18:31:53,609 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 18:31:53,609 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 18:31:53,610 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 18:31:53,616 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 18:31:53,616 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 18:31:53,617 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 18:31:53,620 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 18:31:53,620 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 18:31:53,622 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 18:31:53,623 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-12 18:31:53,657 INFO L208 MainTranslator]: Completed translation [2022-12-12 18:31:53,658 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 06:31:53 WrapperNode [2022-12-12 18:31:53,658 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-12 18:31:53,660 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-12 18:31:53,661 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-12 18:31:53,661 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-12 18:31:53,666 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 06:31:53" (1/1) ... [2022-12-12 18:31:53,680 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 06:31:53" (1/1) ... [2022-12-12 18:31:53,728 INFO L138 Inliner]: procedures = 177, calls = 72, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 274 [2022-12-12 18:31:53,728 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-12 18:31:53,729 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-12 18:31:53,729 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-12 18:31:53,729 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-12 18:31:53,741 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 06:31:53" (1/1) ... [2022-12-12 18:31:53,741 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 06:31:53" (1/1) ... [2022-12-12 18:31:53,749 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 06:31:53" (1/1) ... [2022-12-12 18:31:53,749 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 06:31:53" (1/1) ... [2022-12-12 18:31:53,758 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 06:31:53" (1/1) ... [2022-12-12 18:31:53,760 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 06:31:53" (1/1) ... [2022-12-12 18:31:53,764 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 06:31:53" (1/1) ... [2022-12-12 18:31:53,765 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 06:31:53" (1/1) ... [2022-12-12 18:31:53,770 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-12 18:31:53,771 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-12 18:31:53,771 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-12 18:31:53,771 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-12 18:31:53,771 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 06:31:53" (1/1) ... [2022-12-12 18:31:53,775 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-12 18:31:53,796 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 18:31:53,826 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-12 18:31:53,846 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 [2022-12-12 18:31:53,858 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-12 18:31:53,858 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-12 18:31:53,858 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-12 18:31:53,858 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-12 18:31:53,858 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-12 18:31:53,858 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2022-12-12 18:31:53,859 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2022-12-12 18:31:53,859 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2022-12-12 18:31:53,859 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2022-12-12 18:31:53,860 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2022-12-12 18:31:53,860 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2022-12-12 18:31:53,860 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2022-12-12 18:31:53,860 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2022-12-12 18:31:53,860 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-12 18:31:53,860 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-12 18:31:53,860 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-12 18:31:53,860 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-12 18:31:53,861 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2022-12-12 18:31:53,964 INFO L236 CfgBuilder]: Building ICFG [2022-12-12 18:31:53,966 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-12 18:31:54,405 INFO L277 CfgBuilder]: Performing block encoding [2022-12-12 18:31:54,565 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-12 18:31:54,565 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-12 18:31:54,568 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.12 06:31:54 BoogieIcfgContainer [2022-12-12 18:31:54,569 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-12 18:31:54,571 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-12 18:31:54,571 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-12 18:31:54,573 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-12 18:31:54,573 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.12 06:31:53" (1/3) ... [2022-12-12 18:31:54,574 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14d7128e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.12 06:31:54, skipping insertion in model container [2022-12-12 18:31:54,574 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 06:31:53" (2/3) ... [2022-12-12 18:31:54,574 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14d7128e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.12 06:31:54, skipping insertion in model container [2022-12-12 18:31:54,574 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.12 06:31:54" (3/3) ... [2022-12-12 18:31:54,575 INFO L112 eAbstractionObserver]: Analyzing ICFG mix008_tso.oepc.i [2022-12-12 18:31:54,589 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-12 18:31:54,589 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2022-12-12 18:31:54,590 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-12 18:31:54,646 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-12-12 18:31:54,676 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 161 places, 150 transitions, 320 flow [2022-12-12 18:31:54,736 INFO L130 PetriNetUnfolder]: 2/146 cut-off events. [2022-12-12 18:31:54,736 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-12 18:31:54,749 INFO L83 FinitePrefix]: Finished finitePrefix Result has 159 conditions, 146 events. 2/146 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 73 event pairs, 0 based on Foata normal form. 0/141 useless extension candidates. Maximal degree in co-relation 89. Up to 2 conditions per place. [2022-12-12 18:31:54,752 INFO L82 GeneralOperation]: Start removeDead. Operand has 161 places, 150 transitions, 320 flow [2022-12-12 18:31:54,759 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 157 places, 146 transitions, 304 flow [2022-12-12 18:31:54,762 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-12 18:31:54,774 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 157 places, 146 transitions, 304 flow [2022-12-12 18:31:54,777 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 157 places, 146 transitions, 304 flow [2022-12-12 18:31:54,801 INFO L130 PetriNetUnfolder]: 2/146 cut-off events. [2022-12-12 18:31:54,801 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-12 18:31:54,802 INFO L83 FinitePrefix]: Finished finitePrefix Result has 159 conditions, 146 events. 2/146 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 73 event pairs, 0 based on Foata normal form. 0/141 useless extension candidates. Maximal degree in co-relation 89. Up to 2 conditions per place. [2022-12-12 18:31:54,809 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 157 places, 146 transitions, 304 flow [2022-12-12 18:31:54,809 INFO L226 LiptonReduction]: Number of co-enabled transitions 3210 [2022-12-12 18:32:05,728 INFO L241 LiptonReduction]: Total number of compositions: 119 [2022-12-12 18:32:05,748 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-12 18:32:05,754 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=false, 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=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@6291d614, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, Conditionality=CONDITIONAL_DISJUNCTIVE, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-12 18:32:05,754 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2022-12-12 18:32:05,760 INFO L130 PetriNetUnfolder]: 0/16 cut-off events. [2022-12-12 18:32:05,760 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-12 18:32:05,760 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 18:32:05,761 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-12 18:32:05,761 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P2Err0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2022-12-12 18:32:05,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 18:32:05,765 INFO L85 PathProgramCache]: Analyzing trace with hash -1952508058, now seen corresponding path program 1 times [2022-12-12 18:32:05,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 18:32:05,777 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862865114] [2022-12-12 18:32:05,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 18:32:05,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 18:32:05,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 18:32:06,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 18:32:06,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 18:32:06,163 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1862865114] [2022-12-12 18:32:06,163 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1862865114] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 18:32:06,164 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 18:32:06,164 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-12 18:32:06,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984316387] [2022-12-12 18:32:06,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 18:32:06,170 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-12 18:32:06,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 18:32:06,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-12 18:32:06,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-12 18:32:06,185 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 74 [2022-12-12 18:32:06,186 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 74 transitions, 160 flow. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 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) [2022-12-12 18:32:06,187 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 18:32:06,187 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 74 [2022-12-12 18:32:06,188 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 18:32:18,939 INFO L130 PetriNetUnfolder]: 90683/123531 cut-off events. [2022-12-12 18:32:18,939 INFO L131 PetriNetUnfolder]: For 136/136 co-relation queries the response was YES. [2022-12-12 18:32:19,095 INFO L83 FinitePrefix]: Finished finitePrefix Result has 242879 conditions, 123531 events. 90683/123531 cut-off events. For 136/136 co-relation queries the response was YES. Maximal size of possible extension queue 5624. Compared 903703 event pairs, 9551 based on Foata normal form. 0/74460 useless extension candidates. Maximal degree in co-relation 242867. Up to 105373 conditions per place. [2022-12-12 18:32:19,318 INFO L137 encePairwiseOnDemand]: 69/74 looper letters, 94 selfloop transitions, 2 changer transitions 8/117 dead transitions. [2022-12-12 18:32:19,318 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 117 transitions, 457 flow [2022-12-12 18:32:19,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-12 18:32:19,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-12 18:32:19,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 148 transitions. [2022-12-12 18:32:19,328 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2022-12-12 18:32:19,332 INFO L295 CegarLoopForPetriNet]: 86 programPoint places, 0 predicate places. [2022-12-12 18:32:19,332 INFO L82 GeneralOperation]: Start removeDead. Operand has 86 places, 117 transitions, 457 flow [2022-12-12 18:32:19,516 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 82 places, 109 transitions, 425 flow [2022-12-12 18:32:19,517 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 109 transitions, 425 flow [2022-12-12 18:32:19,517 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 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) [2022-12-12 18:32:19,517 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 18:32:19,517 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 18:32:19,518 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-12 18:32:19,518 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting P3Err0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2022-12-12 18:32:19,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 18:32:19,524 INFO L85 PathProgramCache]: Analyzing trace with hash 540574986, now seen corresponding path program 1 times [2022-12-12 18:32:19,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 18:32:19,525 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627783667] [2022-12-12 18:32:19,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 18:32:19,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 18:32:19,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 18:32:19,706 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 18:32:19,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 18:32:19,706 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1627783667] [2022-12-12 18:32:19,706 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1627783667] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 18:32:19,707 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 18:32:19,707 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-12 18:32:19,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49232180] [2022-12-12 18:32:19,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 18:32:19,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-12 18:32:19,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 18:32:19,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-12 18:32:19,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-12 18:32:19,708 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 74 [2022-12-12 18:32:19,709 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 109 transitions, 425 flow. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 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) [2022-12-12 18:32:19,709 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 18:32:19,709 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 74 [2022-12-12 18:32:19,709 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 18:32:30,224 INFO L130 PetriNetUnfolder]: 76119/108481 cut-off events. [2022-12-12 18:32:30,224 INFO L131 PetriNetUnfolder]: For 4082/4092 co-relation queries the response was YES. [2022-12-12 18:32:30,382 INFO L83 FinitePrefix]: Finished finitePrefix Result has 308754 conditions, 108481 events. 76119/108481 cut-off events. For 4082/4092 co-relation queries the response was YES. Maximal size of possible extension queue 5294. Compared 842375 event pairs, 979 based on Foata normal form. 0/70266 useless extension candidates. Maximal degree in co-relation 308739. Up to 88501 conditions per place. [2022-12-12 18:32:30,544 INFO L137 encePairwiseOnDemand]: 71/74 looper letters, 69 selfloop transitions, 3 changer transitions 96/181 dead transitions. [2022-12-12 18:32:30,545 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 181 transitions, 1049 flow [2022-12-12 18:32:30,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-12 18:32:30,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-12 18:32:30,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 133 transitions. [2022-12-12 18:32:30,546 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5990990990990991 [2022-12-12 18:32:30,547 INFO L295 CegarLoopForPetriNet]: 86 programPoint places, -3 predicate places. [2022-12-12 18:32:30,547 INFO L82 GeneralOperation]: Start removeDead. Operand has 83 places, 181 transitions, 1049 flow [2022-12-12 18:32:30,675 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 59 places, 85 transitions, 473 flow [2022-12-12 18:32:30,675 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 85 transitions, 473 flow [2022-12-12 18:32:30,675 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 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) [2022-12-12 18:32:30,676 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 18:32:30,676 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 18:32:30,676 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-12 18:32:30,676 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2022-12-12 18:32:30,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 18:32:30,676 INFO L85 PathProgramCache]: Analyzing trace with hash -198433648, now seen corresponding path program 1 times [2022-12-12 18:32:30,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 18:32:30,677 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1777296023] [2022-12-12 18:32:30,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 18:32:30,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 18:32:30,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 18:32:31,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 18:32:31,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 18:32:31,131 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1777296023] [2022-12-12 18:32:31,131 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1777296023] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 18:32:31,131 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 18:32:31,131 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-12 18:32:31,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265103646] [2022-12-12 18:32:31,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 18:32:31,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-12 18:32:31,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 18:32:31,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-12 18:32:31,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-12 18:32:31,133 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 74 [2022-12-12 18:32:31,133 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 85 transitions, 473 flow. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 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) [2022-12-12 18:32:31,133 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 18:32:31,133 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 74 [2022-12-12 18:32:31,133 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 18:32:34,843 INFO L130 PetriNetUnfolder]: 28807/40995 cut-off events. [2022-12-12 18:32:34,844 INFO L131 PetriNetUnfolder]: For 17877/17877 co-relation queries the response was YES. [2022-12-12 18:32:34,895 INFO L83 FinitePrefix]: Finished finitePrefix Result has 149486 conditions, 40995 events. 28807/40995 cut-off events. For 17877/17877 co-relation queries the response was YES. Maximal size of possible extension queue 1323. Compared 258267 event pairs, 1066 based on Foata normal form. 980/35076 useless extension candidates. Maximal degree in co-relation 149468. Up to 30631 conditions per place. [2022-12-12 18:32:35,041 INFO L137 encePairwiseOnDemand]: 61/74 looper letters, 153 selfloop transitions, 32 changer transitions 0/195 dead transitions. [2022-12-12 18:32:35,041 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 195 transitions, 1508 flow [2022-12-12 18:32:35,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-12 18:32:35,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-12 18:32:35,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 122 transitions. [2022-12-12 18:32:35,045 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.41216216216216217 [2022-12-12 18:32:35,046 INFO L295 CegarLoopForPetriNet]: 86 programPoint places, -24 predicate places. [2022-12-12 18:32:35,047 INFO L82 GeneralOperation]: Start removeDead. Operand has 62 places, 195 transitions, 1508 flow [2022-12-12 18:32:35,356 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 62 places, 195 transitions, 1508 flow [2022-12-12 18:32:35,356 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 195 transitions, 1508 flow [2022-12-12 18:32:35,356 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 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) [2022-12-12 18:32:35,356 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 18:32:35,356 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 18:32:35,356 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-12 18:32:35,357 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2022-12-12 18:32:35,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 18:32:35,357 INFO L85 PathProgramCache]: Analyzing trace with hash -1856476158, now seen corresponding path program 1 times [2022-12-12 18:32:35,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 18:32:35,357 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141237988] [2022-12-12 18:32:35,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 18:32:35,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 18:32:35,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 18:32:35,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 18:32:35,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 18:32:35,753 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141237988] [2022-12-12 18:32:35,754 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [141237988] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 18:32:35,754 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 18:32:35,754 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-12 18:32:35,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223011834] [2022-12-12 18:32:35,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 18:32:35,755 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-12 18:32:35,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 18:32:35,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-12 18:32:35,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-12 18:32:35,756 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 74 [2022-12-12 18:32:35,757 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 195 transitions, 1508 flow. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 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) [2022-12-12 18:32:35,757 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 18:32:35,757 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 74 [2022-12-12 18:32:35,757 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 18:32:39,353 INFO L130 PetriNetUnfolder]: 26961/38398 cut-off events. [2022-12-12 18:32:39,353 INFO L131 PetriNetUnfolder]: For 16165/16165 co-relation queries the response was YES. [2022-12-12 18:32:39,412 INFO L83 FinitePrefix]: Finished finitePrefix Result has 176359 conditions, 38398 events. 26961/38398 cut-off events. For 16165/16165 co-relation queries the response was YES. Maximal size of possible extension queue 1212. Compared 237526 event pairs, 325 based on Foata normal form. 392/32243 useless extension candidates. Maximal degree in co-relation 176338. Up to 29240 conditions per place. [2022-12-12 18:32:39,582 INFO L137 encePairwiseOnDemand]: 62/74 looper letters, 231 selfloop transitions, 22 changer transitions 0/263 dead transitions. [2022-12-12 18:32:39,583 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 263 transitions, 2539 flow [2022-12-12 18:32:39,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-12 18:32:39,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-12 18:32:39,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 113 transitions. [2022-12-12 18:32:39,584 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.38175675675675674 [2022-12-12 18:32:39,585 INFO L295 CegarLoopForPetriNet]: 86 programPoint places, -21 predicate places. [2022-12-12 18:32:39,586 INFO L82 GeneralOperation]: Start removeDead. Operand has 65 places, 263 transitions, 2539 flow [2022-12-12 18:32:39,753 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 65 places, 263 transitions, 2539 flow [2022-12-12 18:32:39,754 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 263 transitions, 2539 flow [2022-12-12 18:32:39,754 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 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) [2022-12-12 18:32:39,754 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 18:32:39,754 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 18:32:39,754 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-12 18:32:39,754 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2022-12-12 18:32:39,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 18:32:39,755 INFO L85 PathProgramCache]: Analyzing trace with hash -1662242452, now seen corresponding path program 1 times [2022-12-12 18:32:39,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 18:32:39,755 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [37304154] [2022-12-12 18:32:39,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 18:32:39,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 18:32:39,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 18:32:40,136 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 18:32:40,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 18:32:40,137 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [37304154] [2022-12-12 18:32:40,137 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [37304154] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 18:32:40,137 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 18:32:40,137 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-12 18:32:40,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762223213] [2022-12-12 18:32:40,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 18:32:40,138 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-12 18:32:40,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 18:32:40,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-12 18:32:40,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-12 18:32:40,138 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 74 [2022-12-12 18:32:40,138 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 263 transitions, 2539 flow. Second operand has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 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) [2022-12-12 18:32:40,139 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 18:32:40,139 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 74 [2022-12-12 18:32:40,139 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 18:32:43,657 INFO L130 PetriNetUnfolder]: 25667/36484 cut-off events. [2022-12-12 18:32:43,658 INFO L131 PetriNetUnfolder]: For 14880/14880 co-relation queries the response was YES. [2022-12-12 18:32:43,727 INFO L83 FinitePrefix]: Finished finitePrefix Result has 202363 conditions, 36484 events. 25667/36484 cut-off events. For 14880/14880 co-relation queries the response was YES. Maximal size of possible extension queue 1119. Compared 222025 event pairs, 623 based on Foata normal form. 280/30493 useless extension candidates. Maximal degree in co-relation 202339. Up to 27646 conditions per place. [2022-12-12 18:32:44,086 INFO L137 encePairwiseOnDemand]: 61/74 looper letters, 309 selfloop transitions, 32 changer transitions 0/351 dead transitions. [2022-12-12 18:32:44,086 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 351 transitions, 4069 flow [2022-12-12 18:32:44,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-12 18:32:44,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-12 18:32:44,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 109 transitions. [2022-12-12 18:32:44,088 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.36824324324324326 [2022-12-12 18:32:44,088 INFO L295 CegarLoopForPetriNet]: 86 programPoint places, -18 predicate places. [2022-12-12 18:32:44,088 INFO L82 GeneralOperation]: Start removeDead. Operand has 68 places, 351 transitions, 4069 flow [2022-12-12 18:32:44,300 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 68 places, 351 transitions, 4069 flow [2022-12-12 18:32:44,300 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 351 transitions, 4069 flow [2022-12-12 18:32:44,300 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 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) [2022-12-12 18:32:44,300 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 18:32:44,301 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 18:32:44,301 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-12 18:32:44,301 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2022-12-12 18:32:44,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 18:32:44,301 INFO L85 PathProgramCache]: Analyzing trace with hash 312863197, now seen corresponding path program 1 times [2022-12-12 18:32:44,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 18:32:44,301 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274111964] [2022-12-12 18:32:44,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 18:32:44,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 18:32:44,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 18:32:44,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 18:32:44,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 18:32:44,611 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [274111964] [2022-12-12 18:32:44,611 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [274111964] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 18:32:44,611 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 18:32:44,611 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-12 18:32:44,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687935580] [2022-12-12 18:32:44,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 18:32:44,612 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-12 18:32:44,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 18:32:44,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-12 18:32:44,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-12 18:32:44,612 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 74 [2022-12-12 18:32:44,612 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 351 transitions, 4069 flow. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 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) [2022-12-12 18:32:44,613 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 18:32:44,613 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 74 [2022-12-12 18:32:44,613 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 18:32:52,176 INFO L130 PetriNetUnfolder]: 54299/74361 cut-off events. [2022-12-12 18:32:52,177 INFO L131 PetriNetUnfolder]: For 148398/150044 co-relation queries the response was YES. [2022-12-12 18:32:52,353 INFO L83 FinitePrefix]: Finished finitePrefix Result has 450434 conditions, 74361 events. 54299/74361 cut-off events. For 148398/150044 co-relation queries the response was YES. Maximal size of possible extension queue 2452. Compared 464093 event pairs, 7127 based on Foata normal form. 4743/67348 useless extension candidates. Maximal degree in co-relation 450407. Up to 52899 conditions per place. [2022-12-12 18:32:52,686 INFO L137 encePairwiseOnDemand]: 59/74 looper letters, 428 selfloop transitions, 113 changer transitions 469/1038 dead transitions. [2022-12-12 18:32:52,686 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 1038 transitions, 14243 flow [2022-12-12 18:32:52,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-12 18:32:52,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-12 18:32:52,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 153 transitions. [2022-12-12 18:32:52,689 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.4135135135135135 [2022-12-12 18:32:52,690 INFO L295 CegarLoopForPetriNet]: 86 programPoint places, -14 predicate places. [2022-12-12 18:32:52,690 INFO L82 GeneralOperation]: Start removeDead. Operand has 72 places, 1038 transitions, 14243 flow [2022-12-12 18:32:53,130 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 70 places, 569 transitions, 7757 flow [2022-12-12 18:32:53,130 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 569 transitions, 7757 flow [2022-12-12 18:32:53,130 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 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) [2022-12-12 18:32:53,130 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 18:32:53,130 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 18:32:53,130 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-12 18:32:53,131 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2022-12-12 18:32:53,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 18:32:53,131 INFO L85 PathProgramCache]: Analyzing trace with hash -2072917065, now seen corresponding path program 1 times [2022-12-12 18:32:53,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 18:32:53,131 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960881949] [2022-12-12 18:32:53,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 18:32:53,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 18:32:53,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 18:32:53,586 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 18:32:53,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 18:32:53,586 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1960881949] [2022-12-12 18:32:53,586 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1960881949] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 18:32:53,586 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 18:32:53,586 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-12 18:32:53,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489167386] [2022-12-12 18:32:53,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 18:32:53,587 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-12 18:32:53,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 18:32:53,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-12 18:32:53,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-12 18:32:53,587 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 74 [2022-12-12 18:32:53,588 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 569 transitions, 7757 flow. Second operand has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 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) [2022-12-12 18:32:53,588 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 18:32:53,588 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 74 [2022-12-12 18:32:53,588 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 18:33:03,355 INFO L130 PetriNetUnfolder]: 57722/78755 cut-off events. [2022-12-12 18:33:03,356 INFO L131 PetriNetUnfolder]: For 163837/165655 co-relation queries the response was YES. [2022-12-12 18:33:03,543 INFO L83 FinitePrefix]: Finished finitePrefix Result has 544251 conditions, 78755 events. 57722/78755 cut-off events. For 163837/165655 co-relation queries the response was YES. Maximal size of possible extension queue 2343. Compared 484362 event pairs, 9420 based on Foata normal form. 1655/67867 useless extension candidates. Maximal degree in co-relation 544221. Up to 71171 conditions per place. [2022-12-12 18:33:03,814 INFO L137 encePairwiseOnDemand]: 68/74 looper letters, 563 selfloop transitions, 48 changer transitions 139/764 dead transitions. [2022-12-12 18:33:03,814 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 764 transitions, 11969 flow [2022-12-12 18:33:03,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-12 18:33:03,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-12 18:33:03,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 110 transitions. [2022-12-12 18:33:03,823 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.3716216216216216 [2022-12-12 18:33:03,823 INFO L295 CegarLoopForPetriNet]: 86 programPoint places, -13 predicate places. [2022-12-12 18:33:03,823 INFO L82 GeneralOperation]: Start removeDead. Operand has 73 places, 764 transitions, 11969 flow [2022-12-12 18:33:04,100 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 73 places, 625 transitions, 9775 flow [2022-12-12 18:33:04,101 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 625 transitions, 9775 flow [2022-12-12 18:33:04,101 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 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) [2022-12-12 18:33:04,101 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 18:33:04,101 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 18:33:04,101 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-12 18:33:04,101 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2022-12-12 18:33:04,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 18:33:04,102 INFO L85 PathProgramCache]: Analyzing trace with hash -2100835491, now seen corresponding path program 1 times [2022-12-12 18:33:04,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 18:33:04,102 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090672262] [2022-12-12 18:33:04,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 18:33:04,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 18:33:04,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 18:33:04,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 18:33:04,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 18:33:04,507 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090672262] [2022-12-12 18:33:04,507 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1090672262] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 18:33:04,507 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 18:33:04,508 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-12 18:33:04,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125126140] [2022-12-12 18:33:04,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 18:33:04,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-12 18:33:04,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 18:33:04,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-12 18:33:04,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-12 18:33:04,509 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 74 [2022-12-12 18:33:04,510 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 625 transitions, 9775 flow. Second operand has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 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) [2022-12-12 18:33:04,510 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 18:33:04,510 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 74 [2022-12-12 18:33:04,510 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand