/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 -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe027_pso.oepc_pso.opt_tso.oepc_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.repeated-lipton-8d0d62b [2022-12-05 20:27:47,229 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-05 20:27:47,231 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-05 20:27:47,262 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-05 20:27:47,262 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-05 20:27:47,265 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-05 20:27:47,267 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-05 20:27:47,270 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-05 20:27:47,275 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-05 20:27:47,279 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-05 20:27:47,280 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-05 20:27:47,281 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-05 20:27:47,301 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-05 20:27:47,302 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-05 20:27:47,302 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-05 20:27:47,305 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-05 20:27:47,305 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-05 20:27:47,306 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-05 20:27:47,308 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-05 20:27:47,311 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-05 20:27:47,312 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-05 20:27:47,313 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-05 20:27:47,313 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-05 20:27:47,314 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-05 20:27:47,316 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-05 20:27:47,316 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-05 20:27:47,316 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-05 20:27:47,317 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-05 20:27:47,317 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-05 20:27:47,318 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-05 20:27:47,318 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-05 20:27:47,318 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-05 20:27:47,319 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-05 20:27:47,319 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-05 20:27:47,320 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-05 20:27:47,320 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-05 20:27:47,320 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-05 20:27:47,321 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-05 20:27:47,321 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-05 20:27:47,321 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-05 20:27:47,322 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-05 20:27:47,324 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 [2022-12-05 20:27:47,346 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-05 20:27:47,346 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-05 20:27:47,347 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-05 20:27:47,347 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-05 20:27:47,348 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-05 20:27:47,349 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-05 20:27:47,349 INFO L138 SettingsManager]: * Use SBE=true [2022-12-05 20:27:47,349 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-05 20:27:47,349 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-05 20:27:47,349 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-05 20:27:47,350 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-05 20:27:47,350 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-05 20:27:47,350 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-05 20:27:47,350 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-05 20:27:47,350 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-05 20:27:47,350 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-05 20:27:47,350 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-05 20:27:47,351 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-05 20:27:47,351 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-05 20:27:47,351 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-05 20:27:47,351 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-05 20:27:47,351 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-12-05 20:27:47,351 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-05 20:27:47,351 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-05 20:27:47,351 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-05 20:27:47,352 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-05 20:27:47,352 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-05 20:27:47,352 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-05 20:27:47,352 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-05 20:27:47,352 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-05 20:27:47,352 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-12-05 20:27:47,755 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-05 20:27:47,772 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-05 20:27:47,774 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-05 20:27:47,774 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-05 20:27:47,775 INFO L275 PluginConnector]: CDTParser initialized [2022-12-05 20:27:47,776 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe027_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2022-12-05 20:27:48,761 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-05 20:27:49,049 INFO L351 CDTParser]: Found 1 translation units. [2022-12-05 20:27:49,049 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe027_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2022-12-05 20:27:49,067 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3d93a203b/81f83c269627456ebb1537bba82cdac1/FLAGde5733d6f [2022-12-05 20:27:49,080 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3d93a203b/81f83c269627456ebb1537bba82cdac1 [2022-12-05 20:27:49,082 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-05 20:27:49,082 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-12-05 20:27:49,085 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-05 20:27:49,085 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-05 20:27:49,087 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-05 20:27:49,087 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.12 08:27:49" (1/1) ... [2022-12-05 20:27:49,088 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@563bebd2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 08:27:49, skipping insertion in model container [2022-12-05 20:27:49,088 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.12 08:27:49" (1/1) ... [2022-12-05 20:27:49,092 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-05 20:27:49,131 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-05 20:27:49,261 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/safe027_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2022-12-05 20:27:49,387 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 20:27:49,387 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 20:27:49,388 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 20:27:49,388 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 20:27:49,388 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 20:27:49,389 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 20:27:49,389 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 20:27:49,389 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 20:27:49,390 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 20:27:49,390 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 20:27:49,390 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 20:27:49,390 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 20:27:49,390 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 20:27:49,391 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 20:27:49,391 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 20:27:49,391 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 20:27:49,391 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 20:27:49,391 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 20:27:49,391 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 20:27:49,392 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 20:27:49,392 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 20:27:49,392 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 20:27:49,393 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 20:27:49,394 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 20:27:49,394 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 20:27:49,394 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 20:27:49,394 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 20:27:49,395 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 20:27:49,401 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 20:27:49,402 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 20:27:49,402 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 20:27:49,403 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 20:27:49,403 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 20:27:49,404 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 20:27:49,406 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-05 20:27:49,414 INFO L203 MainTranslator]: Completed pre-run [2022-12-05 20:27:49,422 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/safe027_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2022-12-05 20:27:49,448 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 20:27:49,449 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 20:27:49,449 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 20:27:49,449 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 20:27:49,449 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 20:27:49,449 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 20:27:49,450 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 20:27:49,450 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 20:27:49,450 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 20:27:49,450 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 20:27:49,451 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 20:27:49,451 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 20:27:49,451 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 20:27:49,451 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 20:27:49,451 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 20:27:49,452 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 20:27:49,452 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 20:27:49,452 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 20:27:49,452 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 20:27:49,452 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 20:27:49,453 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 20:27:49,453 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 20:27:49,456 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 20:27:49,456 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 20:27:49,456 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 20:27:49,457 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 20:27:49,457 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 20:27:49,458 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 20:27:49,463 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 20:27:49,464 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 20:27:49,464 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 20:27:49,464 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 20:27:49,464 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 20:27:49,465 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 20:27:49,467 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-05 20:27:49,497 INFO L208 MainTranslator]: Completed translation [2022-12-05 20:27:49,498 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 08:27:49 WrapperNode [2022-12-05 20:27:49,498 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-05 20:27:49,499 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-05 20:27:49,499 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-05 20:27:49,499 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-05 20:27:49,504 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 08:27:49" (1/1) ... [2022-12-05 20:27:49,527 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 08:27:49" (1/1) ... [2022-12-05 20:27:49,546 INFO L138 Inliner]: procedures = 177, calls = 62, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 83 [2022-12-05 20:27:49,547 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-05 20:27:49,547 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-05 20:27:49,547 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-05 20:27:49,547 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-05 20:27:49,553 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 08:27:49" (1/1) ... [2022-12-05 20:27:49,553 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 08:27:49" (1/1) ... [2022-12-05 20:27:49,555 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 08:27:49" (1/1) ... [2022-12-05 20:27:49,555 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 08:27:49" (1/1) ... [2022-12-05 20:27:49,559 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 08:27:49" (1/1) ... [2022-12-05 20:27:49,560 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 08:27:49" (1/1) ... [2022-12-05 20:27:49,561 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 08:27:49" (1/1) ... [2022-12-05 20:27:49,561 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 08:27:49" (1/1) ... [2022-12-05 20:27:49,563 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-05 20:27:49,564 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-05 20:27:49,564 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-05 20:27:49,564 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-05 20:27:49,564 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 08:27:49" (1/1) ... [2022-12-05 20:27:49,568 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-05 20:27:49,577 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-05 20:27:49,587 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) [2022-12-05 20:27:49,611 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 [2022-12-05 20:27:49,638 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-05 20:27:49,638 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-05 20:27:49,638 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-05 20:27:49,638 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-05 20:27:49,648 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-05 20:27:49,648 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2022-12-05 20:27:49,648 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2022-12-05 20:27:49,648 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2022-12-05 20:27:49,648 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2022-12-05 20:27:49,648 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2022-12-05 20:27:49,648 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2022-12-05 20:27:49,648 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2022-12-05 20:27:49,648 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2022-12-05 20:27:49,648 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-05 20:27:49,649 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-05 20:27:49,649 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-05 20:27:49,649 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-05 20:27:49,656 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2022-12-05 20:27:49,749 INFO L236 CfgBuilder]: Building ICFG [2022-12-05 20:27:49,751 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-05 20:27:49,876 INFO L277 CfgBuilder]: Performing block encoding [2022-12-05 20:27:49,881 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-05 20:27:49,882 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-05 20:27:49,883 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.12 08:27:49 BoogieIcfgContainer [2022-12-05 20:27:49,883 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-05 20:27:49,885 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-05 20:27:49,885 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-05 20:27:49,887 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-05 20:27:49,887 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.12 08:27:49" (1/3) ... [2022-12-05 20:27:49,887 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2738a598 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.12 08:27:49, skipping insertion in model container [2022-12-05 20:27:49,887 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 08:27:49" (2/3) ... [2022-12-05 20:27:49,888 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2738a598 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.12 08:27:49, skipping insertion in model container [2022-12-05 20:27:49,888 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.12 08:27:49" (3/3) ... [2022-12-05 20:27:49,888 INFO L112 eAbstractionObserver]: Analyzing ICFG safe027_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2022-12-05 20:27:49,900 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-05 20:27:49,901 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-05 20:27:49,901 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-05 20:27:49,967 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-12-05 20:27:49,988 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 111 places, 100 transitions, 220 flow [2022-12-05 20:27:50,021 INFO L130 PetriNetUnfolder]: 2/96 cut-off events. [2022-12-05 20:27:50,021 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-05 20:27:50,024 INFO L83 FinitePrefix]: Finished finitePrefix Result has 109 conditions, 96 events. 2/96 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 52 event pairs, 0 based on Foata normal form. 0/93 useless extension candidates. Maximal degree in co-relation 79. Up to 2 conditions per place. [2022-12-05 20:27:50,024 INFO L82 GeneralOperation]: Start removeDead. Operand has 111 places, 100 transitions, 220 flow [2022-12-05 20:27:50,029 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 94 places, 82 transitions, 176 flow [2022-12-05 20:27:50,031 INFO L195 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-05 20:27:50,048 INFO L167 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 94 places, 82 transitions, 176 flow [2022-12-05 20:27:50,057 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 94 places, 82 transitions, 176 flow [2022-12-05 20:27:50,075 INFO L130 PetriNetUnfolder]: 1/82 cut-off events. [2022-12-05 20:27:50,075 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-05 20:27:50,076 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95 conditions, 82 events. 1/82 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 45 event pairs, 0 based on Foata normal form. 0/81 useless extension candidates. Maximal degree in co-relation 65. Up to 2 conditions per place. [2022-12-05 20:27:50,078 INFO L184 LiptonReduction]: Starting Lipton reduction on Petri net that has 94 places, 82 transitions, 176 flow [2022-12-05 20:27:50,078 INFO L188 LiptonReduction]: Number of co-enabled transitions 1542 [2022-12-05 20:27:52,314 INFO L203 LiptonReduction]: Total number of compositions: 62 [2022-12-05 20:27:52,335 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-05 20:27:52,349 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;@2d9510c1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, Conditionality=CONDITIONAL_DISJUNCTIVE, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-05 20:27:52,349 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-12-05 20:27:52,375 INFO L130 PetriNetUnfolder]: 0/17 cut-off events. [2022-12-05 20:27:52,376 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-05 20:27:52,376 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 20:27:52,379 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 20:27:52,384 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-05 20:27:52,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 20:27:52,388 INFO L85 PathProgramCache]: Analyzing trace with hash -793814867, now seen corresponding path program 1 times [2022-12-05 20:27:52,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 20:27:52,396 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1909924803] [2022-12-05 20:27:52,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 20:27:52,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 20:27:52,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 20:27:53,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 20:27:53,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 20:27:53,003 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1909924803] [2022-12-05 20:27:53,003 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1909924803] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 20:27:53,003 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 20:27:53,003 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-05 20:27:53,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482699548] [2022-12-05 20:27:53,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 20:27:53,010 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-05 20:27:53,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 20:27:53,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-05 20:27:53,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-05 20:27:53,030 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 21 [2022-12-05 20:27:53,031 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 21 transitions, 54 flow. Second operand has 3 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 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) [2022-12-05 20:27:53,031 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 20:27:53,031 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 21 [2022-12-05 20:27:53,032 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 20:27:53,216 INFO L130 PetriNetUnfolder]: 1299/1851 cut-off events. [2022-12-05 20:27:53,216 INFO L131 PetriNetUnfolder]: For 59/59 co-relation queries the response was YES. [2022-12-05 20:27:53,220 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3838 conditions, 1851 events. 1299/1851 cut-off events. For 59/59 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 7514 event pairs, 339 based on Foata normal form. 9/1860 useless extension candidates. Maximal degree in co-relation 3826. Up to 1795 conditions per place. [2022-12-05 20:27:53,227 INFO L137 encePairwiseOnDemand]: 16/21 looper letters, 30 selfloop transitions, 3 changer transitions 0/33 dead transitions. [2022-12-05 20:27:53,227 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 33 transitions, 153 flow [2022-12-05 20:27:53,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-05 20:27:53,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-05 20:27:53,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 36 transitions. [2022-12-05 20:27:53,235 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.5714285714285714 [2022-12-05 20:27:53,236 INFO L175 Difference]: Start difference. First operand has 33 places, 21 transitions, 54 flow. Second operand 3 states and 36 transitions. [2022-12-05 20:27:53,237 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 33 transitions, 153 flow [2022-12-05 20:27:53,239 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 33 transitions, 146 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-12-05 20:27:53,240 INFO L231 Difference]: Finished difference. Result has 32 places, 22 transitions, 67 flow [2022-12-05 20:27:53,241 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=67, PETRI_PLACES=32, PETRI_TRANSITIONS=22} [2022-12-05 20:27:53,243 INFO L294 CegarLoopForPetriNet]: 33 programPoint places, -1 predicate places. [2022-12-05 20:27:53,244 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 22 transitions, 67 flow [2022-12-05 20:27:53,264 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 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) [2022-12-05 20:27:53,265 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 20:27:53,265 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 20:27:53,265 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-05 20:27:53,265 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-05 20:27:53,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 20:27:53,271 INFO L85 PathProgramCache]: Analyzing trace with hash 1161541770, now seen corresponding path program 1 times [2022-12-05 20:27:53,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 20:27:53,272 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605778108] [2022-12-05 20:27:53,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 20:27:53,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 20:27:53,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 20:27:53,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 20:27:53,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 20:27:53,413 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [605778108] [2022-12-05 20:27:53,413 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [605778108] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 20:27:53,413 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 20:27:53,413 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-05 20:27:53,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597783111] [2022-12-05 20:27:53,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 20:27:53,415 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-05 20:27:53,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 20:27:53,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-05 20:27:53,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-05 20:27:53,415 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 2 out of 21 [2022-12-05 20:27:53,415 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 22 transitions, 67 flow. Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 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) [2022-12-05 20:27:53,415 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 20:27:53,416 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 2 of 21 [2022-12-05 20:27:53,416 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 20:27:53,497 INFO L130 PetriNetUnfolder]: 623/992 cut-off events. [2022-12-05 20:27:53,498 INFO L131 PetriNetUnfolder]: For 154/154 co-relation queries the response was YES. [2022-12-05 20:27:53,500 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2275 conditions, 992 events. 623/992 cut-off events. For 154/154 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 4558 event pairs, 161 based on Foata normal form. 18/1009 useless extension candidates. Maximal degree in co-relation 2264. Up to 688 conditions per place. [2022-12-05 20:27:53,504 INFO L137 encePairwiseOnDemand]: 18/21 looper letters, 25 selfloop transitions, 3 changer transitions 0/30 dead transitions. [2022-12-05 20:27:53,504 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 30 transitions, 141 flow [2022-12-05 20:27:53,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-05 20:27:53,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-05 20:27:53,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 34 transitions. [2022-12-05 20:27:53,506 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.5396825396825397 [2022-12-05 20:27:53,506 INFO L175 Difference]: Start difference. First operand has 32 places, 22 transitions, 67 flow. Second operand 3 states and 34 transitions. [2022-12-05 20:27:53,506 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 30 transitions, 141 flow [2022-12-05 20:27:53,508 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 30 transitions, 138 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-05 20:27:53,509 INFO L231 Difference]: Finished difference. Result has 34 places, 22 transitions, 75 flow [2022-12-05 20:27:53,509 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=75, PETRI_PLACES=34, PETRI_TRANSITIONS=22} [2022-12-05 20:27:53,510 INFO L294 CegarLoopForPetriNet]: 33 programPoint places, 1 predicate places. [2022-12-05 20:27:53,510 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 22 transitions, 75 flow [2022-12-05 20:27:53,510 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 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) [2022-12-05 20:27:53,510 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 20:27:53,510 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 20:27:53,510 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-05 20:27:53,510 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-05 20:27:53,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 20:27:53,511 INFO L85 PathProgramCache]: Analyzing trace with hash 1161542328, now seen corresponding path program 1 times [2022-12-05 20:27:53,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 20:27:53,511 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [829663544] [2022-12-05 20:27:53,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 20:27:53,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 20:27:53,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 20:27:53,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 20:27:53,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 20:27:53,624 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [829663544] [2022-12-05 20:27:53,624 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [829663544] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 20:27:53,625 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 20:27:53,625 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-05 20:27:53,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203305574] [2022-12-05 20:27:53,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 20:27:53,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-05 20:27:53,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 20:27:53,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-05 20:27:53,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-05 20:27:53,626 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 21 [2022-12-05 20:27:53,626 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 22 transitions, 75 flow. Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 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) [2022-12-05 20:27:53,626 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 20:27:53,626 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 21 [2022-12-05 20:27:53,626 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 20:27:53,794 INFO L130 PetriNetUnfolder]: 1426/2036 cut-off events. [2022-12-05 20:27:53,795 INFO L131 PetriNetUnfolder]: For 701/701 co-relation queries the response was YES. [2022-12-05 20:27:53,798 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4873 conditions, 2036 events. 1426/2036 cut-off events. For 701/701 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 8548 event pairs, 154 based on Foata normal form. 36/2072 useless extension candidates. Maximal degree in co-relation 4860. Up to 1310 conditions per place. [2022-12-05 20:27:53,837 INFO L137 encePairwiseOnDemand]: 14/21 looper letters, 51 selfloop transitions, 13 changer transitions 0/64 dead transitions. [2022-12-05 20:27:53,837 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 64 transitions, 323 flow [2022-12-05 20:27:53,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-05 20:27:53,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-05 20:27:53,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 64 transitions. [2022-12-05 20:27:53,839 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.6095238095238096 [2022-12-05 20:27:53,839 INFO L175 Difference]: Start difference. First operand has 34 places, 22 transitions, 75 flow. Second operand 5 states and 64 transitions. [2022-12-05 20:27:53,839 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 64 transitions, 323 flow [2022-12-05 20:27:53,840 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 64 transitions, 313 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-05 20:27:53,841 INFO L231 Difference]: Finished difference. Result has 39 places, 32 transitions, 166 flow [2022-12-05 20:27:53,841 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=69, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=166, PETRI_PLACES=39, PETRI_TRANSITIONS=32} [2022-12-05 20:27:53,842 INFO L294 CegarLoopForPetriNet]: 33 programPoint places, 6 predicate places. [2022-12-05 20:27:53,842 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 32 transitions, 166 flow [2022-12-05 20:27:53,842 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 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) [2022-12-05 20:27:53,842 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 20:27:53,842 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 20:27:53,842 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-05 20:27:53,842 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-05 20:27:53,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 20:27:53,843 INFO L85 PathProgramCache]: Analyzing trace with hash 1648068424, now seen corresponding path program 1 times [2022-12-05 20:27:53,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 20:27:53,843 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612455456] [2022-12-05 20:27:53,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 20:27:53,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 20:27:53,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 20:27:53,920 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 20:27:53,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 20:27:53,921 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612455456] [2022-12-05 20:27:53,921 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1612455456] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 20:27:53,921 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 20:27:53,921 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-05 20:27:53,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370277866] [2022-12-05 20:27:53,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 20:27:53,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-05 20:27:53,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 20:27:53,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-05 20:27:53,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-05 20:27:53,922 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 21 [2022-12-05 20:27:53,922 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 32 transitions, 166 flow. Second operand has 4 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 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) [2022-12-05 20:27:53,922 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 20:27:53,922 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 21 [2022-12-05 20:27:53,922 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 20:27:54,047 INFO L130 PetriNetUnfolder]: 1356/1942 cut-off events. [2022-12-05 20:27:54,047 INFO L131 PetriNetUnfolder]: For 2189/2189 co-relation queries the response was YES. [2022-12-05 20:27:54,051 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6164 conditions, 1942 events. 1356/1942 cut-off events. For 2189/2189 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 8023 event pairs, 534 based on Foata normal form. 24/1966 useless extension candidates. Maximal degree in co-relation 6148. Up to 1643 conditions per place. [2022-12-05 20:27:54,059 INFO L137 encePairwiseOnDemand]: 18/21 looper letters, 42 selfloop transitions, 6 changer transitions 0/48 dead transitions. [2022-12-05 20:27:54,059 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 48 transitions, 318 flow [2022-12-05 20:27:54,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-05 20:27:54,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-05 20:27:54,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 35 transitions. [2022-12-05 20:27:54,060 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.5555555555555556 [2022-12-05 20:27:54,060 INFO L175 Difference]: Start difference. First operand has 39 places, 32 transitions, 166 flow. Second operand 3 states and 35 transitions. [2022-12-05 20:27:54,060 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 48 transitions, 318 flow [2022-12-05 20:27:54,062 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 48 transitions, 309 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-05 20:27:54,063 INFO L231 Difference]: Finished difference. Result has 41 places, 32 transitions, 179 flow [2022-12-05 20:27:54,063 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=159, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=179, PETRI_PLACES=41, PETRI_TRANSITIONS=32} [2022-12-05 20:27:54,063 INFO L294 CegarLoopForPetriNet]: 33 programPoint places, 8 predicate places. [2022-12-05 20:27:54,064 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 32 transitions, 179 flow [2022-12-05 20:27:54,064 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 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) [2022-12-05 20:27:54,064 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 20:27:54,064 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 20:27:54,064 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-05 20:27:54,064 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-05 20:27:54,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 20:27:54,064 INFO L85 PathProgramCache]: Analyzing trace with hash 1684917411, now seen corresponding path program 1 times [2022-12-05 20:27:54,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 20:27:54,065 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770041893] [2022-12-05 20:27:54,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 20:27:54,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 20:27:54,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 20:27:54,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 20:27:54,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 20:27:54,143 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1770041893] [2022-12-05 20:27:54,143 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1770041893] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 20:27:54,143 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 20:27:54,143 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-05 20:27:54,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624994840] [2022-12-05 20:27:54,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 20:27:54,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-05 20:27:54,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 20:27:54,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-05 20:27:54,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-05 20:27:54,144 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 21 [2022-12-05 20:27:54,144 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 32 transitions, 179 flow. Second operand has 4 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 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) [2022-12-05 20:27:54,144 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 20:27:54,144 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 21 [2022-12-05 20:27:54,145 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 20:27:54,335 INFO L130 PetriNetUnfolder]: 1548/2213 cut-off events. [2022-12-05 20:27:54,335 INFO L131 PetriNetUnfolder]: For 3753/3753 co-relation queries the response was YES. [2022-12-05 20:27:54,339 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7022 conditions, 2213 events. 1548/2213 cut-off events. For 3753/3753 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 9109 event pairs, 137 based on Foata normal form. 27/2240 useless extension candidates. Maximal degree in co-relation 7004. Up to 1128 conditions per place. [2022-12-05 20:27:54,348 INFO L137 encePairwiseOnDemand]: 14/21 looper letters, 60 selfloop transitions, 20 changer transitions 0/80 dead transitions. [2022-12-05 20:27:54,348 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 80 transitions, 592 flow [2022-12-05 20:27:54,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-05 20:27:54,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-05 20:27:54,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 56 transitions. [2022-12-05 20:27:54,349 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.5333333333333333 [2022-12-05 20:27:54,350 INFO L175 Difference]: Start difference. First operand has 41 places, 32 transitions, 179 flow. Second operand 5 states and 56 transitions. [2022-12-05 20:27:54,350 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 80 transitions, 592 flow [2022-12-05 20:27:54,353 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 80 transitions, 570 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-05 20:27:54,353 INFO L231 Difference]: Finished difference. Result has 46 places, 48 transitions, 380 flow [2022-12-05 20:27:54,354 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=167, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=380, PETRI_PLACES=46, PETRI_TRANSITIONS=48} [2022-12-05 20:27:54,354 INFO L294 CegarLoopForPetriNet]: 33 programPoint places, 13 predicate places. [2022-12-05 20:27:54,354 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 48 transitions, 380 flow [2022-12-05 20:27:54,354 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 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) [2022-12-05 20:27:54,354 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 20:27:54,355 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 20:27:54,355 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-05 20:27:54,355 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-05 20:27:54,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 20:27:54,355 INFO L85 PathProgramCache]: Analyzing trace with hash -744882975, now seen corresponding path program 1 times [2022-12-05 20:27:54,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 20:27:54,355 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628100090] [2022-12-05 20:27:54,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 20:27:54,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 20:27:54,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 20:27:54,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 20:27:54,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 20:27:54,437 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1628100090] [2022-12-05 20:27:54,437 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1628100090] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 20:27:54,437 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 20:27:54,437 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-05 20:27:54,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355425409] [2022-12-05 20:27:54,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 20:27:54,437 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-05 20:27:54,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 20:27:54,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-05 20:27:54,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-05 20:27:54,438 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 21 [2022-12-05 20:27:54,438 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 48 transitions, 380 flow. Second operand has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 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) [2022-12-05 20:27:54,438 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 20:27:54,438 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 21 [2022-12-05 20:27:54,438 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 20:27:54,610 INFO L130 PetriNetUnfolder]: 1811/2614 cut-off events. [2022-12-05 20:27:54,610 INFO L131 PetriNetUnfolder]: For 7605/7605 co-relation queries the response was YES. [2022-12-05 20:27:54,616 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9473 conditions, 2614 events. 1811/2614 cut-off events. For 7605/7605 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 11003 event pairs, 414 based on Foata normal form. 78/2692 useless extension candidates. Maximal degree in co-relation 9452. Up to 938 conditions per place. [2022-12-05 20:27:54,623 INFO L137 encePairwiseOnDemand]: 17/21 looper letters, 44 selfloop transitions, 8 changer transitions 25/77 dead transitions. [2022-12-05 20:27:54,623 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 77 transitions, 700 flow [2022-12-05 20:27:54,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-05 20:27:54,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-05 20:27:54,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 40 transitions. [2022-12-05 20:27:54,624 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.47619047619047616 [2022-12-05 20:27:54,624 INFO L175 Difference]: Start difference. First operand has 46 places, 48 transitions, 380 flow. Second operand 4 states and 40 transitions. [2022-12-05 20:27:54,624 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 77 transitions, 700 flow [2022-12-05 20:27:54,629 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 77 transitions, 690 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-05 20:27:54,630 INFO L231 Difference]: Finished difference. Result has 50 places, 35 transitions, 263 flow [2022-12-05 20:27:54,630 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=370, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=263, PETRI_PLACES=50, PETRI_TRANSITIONS=35} [2022-12-05 20:27:54,631 INFO L294 CegarLoopForPetriNet]: 33 programPoint places, 17 predicate places. [2022-12-05 20:27:54,631 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 35 transitions, 263 flow [2022-12-05 20:27:54,631 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 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) [2022-12-05 20:27:54,631 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 20:27:54,631 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 20:27:54,631 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-05 20:27:54,632 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-05 20:27:54,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 20:27:54,632 INFO L85 PathProgramCache]: Analyzing trace with hash 692828177, now seen corresponding path program 1 times [2022-12-05 20:27:54,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 20:27:54,632 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276253014] [2022-12-05 20:27:54,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 20:27:54,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 20:27:54,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 20:27:54,706 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 20:27:54,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 20:27:54,707 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1276253014] [2022-12-05 20:27:54,707 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1276253014] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 20:27:54,707 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 20:27:54,707 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-05 20:27:54,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118935241] [2022-12-05 20:27:54,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 20:27:54,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-05 20:27:54,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 20:27:54,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-05 20:27:54,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-05 20:27:54,708 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 21 [2022-12-05 20:27:54,708 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 35 transitions, 263 flow. Second operand has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 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) [2022-12-05 20:27:54,708 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 20:27:54,708 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 21 [2022-12-05 20:27:54,708 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 20:27:54,825 INFO L130 PetriNetUnfolder]: 887/1328 cut-off events. [2022-12-05 20:27:54,826 INFO L131 PetriNetUnfolder]: For 4202/4202 co-relation queries the response was YES. [2022-12-05 20:27:54,828 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4854 conditions, 1328 events. 887/1328 cut-off events. For 4202/4202 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 5389 event pairs, 355 based on Foata normal form. 54/1382 useless extension candidates. Maximal degree in co-relation 4830. Up to 600 conditions per place. [2022-12-05 20:27:54,832 INFO L137 encePairwiseOnDemand]: 17/21 looper letters, 36 selfloop transitions, 6 changer transitions 17/59 dead transitions. [2022-12-05 20:27:54,832 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 59 transitions, 511 flow [2022-12-05 20:27:54,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-05 20:27:54,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-05 20:27:54,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 46 transitions. [2022-12-05 20:27:54,833 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.5476190476190477 [2022-12-05 20:27:54,833 INFO L175 Difference]: Start difference. First operand has 50 places, 35 transitions, 263 flow. Second operand 4 states and 46 transitions. [2022-12-05 20:27:54,833 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 59 transitions, 511 flow [2022-12-05 20:27:54,837 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 59 transitions, 445 flow, removed 7 selfloop flow, removed 7 redundant places. [2022-12-05 20:27:54,837 INFO L231 Difference]: Finished difference. Result has 48 places, 26 transitions, 176 flow [2022-12-05 20:27:54,838 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=218, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=176, PETRI_PLACES=48, PETRI_TRANSITIONS=26} [2022-12-05 20:27:54,838 INFO L294 CegarLoopForPetriNet]: 33 programPoint places, 15 predicate places. [2022-12-05 20:27:54,838 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 26 transitions, 176 flow [2022-12-05 20:27:54,838 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 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) [2022-12-05 20:27:54,838 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 20:27:54,838 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 20:27:54,838 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-05 20:27:54,839 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-05 20:27:54,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 20:27:54,839 INFO L85 PathProgramCache]: Analyzing trace with hash -1049215771, now seen corresponding path program 1 times [2022-12-05 20:27:54,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 20:27:54,839 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1457149598] [2022-12-05 20:27:54,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 20:27:54,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 20:27:54,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 20:27:54,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 20:27:54,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 20:27:54,910 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1457149598] [2022-12-05 20:27:54,910 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1457149598] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 20:27:54,910 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 20:27:54,910 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-05 20:27:54,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553977293] [2022-12-05 20:27:54,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 20:27:54,911 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-05 20:27:54,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 20:27:54,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-05 20:27:54,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-05 20:27:54,911 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 2 out of 21 [2022-12-05 20:27:54,911 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 26 transitions, 176 flow. Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 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) [2022-12-05 20:27:54,911 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 20:27:54,911 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 2 of 21 [2022-12-05 20:27:54,912 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 20:27:55,002 INFO L130 PetriNetUnfolder]: 377/616 cut-off events. [2022-12-05 20:27:55,003 INFO L131 PetriNetUnfolder]: For 4513/4822 co-relation queries the response was YES. [2022-12-05 20:27:55,004 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2432 conditions, 616 events. 377/616 cut-off events. For 4513/4822 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 2700 event pairs, 110 based on Foata normal form. 35/605 useless extension candidates. Maximal degree in co-relation 2411. Up to 389 conditions per place. [2022-12-05 20:27:55,007 INFO L137 encePairwiseOnDemand]: 14/21 looper letters, 60 selfloop transitions, 9 changer transitions 2/73 dead transitions. [2022-12-05 20:27:55,008 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 73 transitions, 635 flow [2022-12-05 20:27:55,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-05 20:27:55,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-05 20:27:55,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 59 transitions. [2022-12-05 20:27:55,009 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.5619047619047619 [2022-12-05 20:27:55,009 INFO L175 Difference]: Start difference. First operand has 48 places, 26 transitions, 176 flow. Second operand 5 states and 59 transitions. [2022-12-05 20:27:55,009 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 73 transitions, 635 flow [2022-12-05 20:27:55,012 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 73 transitions, 564 flow, removed 6 selfloop flow, removed 5 redundant places. [2022-12-05 20:27:55,013 INFO L231 Difference]: Finished difference. Result has 50 places, 34 transitions, 222 flow [2022-12-05 20:27:55,013 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=153, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=222, PETRI_PLACES=50, PETRI_TRANSITIONS=34} [2022-12-05 20:27:55,013 INFO L294 CegarLoopForPetriNet]: 33 programPoint places, 17 predicate places. [2022-12-05 20:27:55,013 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 34 transitions, 222 flow [2022-12-05 20:27:55,014 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 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) [2022-12-05 20:27:55,014 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 20:27:55,014 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 20:27:55,014 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-05 20:27:55,014 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-05 20:27:55,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 20:27:55,014 INFO L85 PathProgramCache]: Analyzing trace with hash -2094325370, now seen corresponding path program 1 times [2022-12-05 20:27:55,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 20:27:55,014 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [187623995] [2022-12-05 20:27:55,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 20:27:55,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 20:27:55,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 20:27:55,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 20:27:55,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 20:27:55,086 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [187623995] [2022-12-05 20:27:55,086 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [187623995] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 20:27:55,087 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 20:27:55,087 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-05 20:27:55,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804666234] [2022-12-05 20:27:55,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 20:27:55,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-05 20:27:55,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 20:27:55,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-05 20:27:55,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-05 20:27:55,088 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 2 out of 21 [2022-12-05 20:27:55,088 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 34 transitions, 222 flow. Second operand has 5 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 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) [2022-12-05 20:27:55,088 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 20:27:55,088 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 2 of 21 [2022-12-05 20:27:55,088 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 20:27:55,194 INFO L130 PetriNetUnfolder]: 348/595 cut-off events. [2022-12-05 20:27:55,194 INFO L131 PetriNetUnfolder]: For 3632/3985 co-relation queries the response was YES. [2022-12-05 20:27:55,196 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2744 conditions, 595 events. 348/595 cut-off events. For 3632/3985 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 2707 event pairs, 37 based on Foata normal form. 75/630 useless extension candidates. Maximal degree in co-relation 2723. Up to 348 conditions per place. [2022-12-05 20:27:55,198 INFO L137 encePairwiseOnDemand]: 14/21 looper letters, 73 selfloop transitions, 17 changer transitions 3/95 dead transitions. [2022-12-05 20:27:55,198 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 95 transitions, 821 flow [2022-12-05 20:27:55,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-05 20:27:55,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-05 20:27:55,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 81 transitions. [2022-12-05 20:27:55,200 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.5510204081632653 [2022-12-05 20:27:55,200 INFO L175 Difference]: Start difference. First operand has 50 places, 34 transitions, 222 flow. Second operand 7 states and 81 transitions. [2022-12-05 20:27:55,200 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 95 transitions, 821 flow [2022-12-05 20:27:55,203 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 95 transitions, 816 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-05 20:27:55,204 INFO L231 Difference]: Finished difference. Result has 58 places, 42 transitions, 338 flow [2022-12-05 20:27:55,204 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=217, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=338, PETRI_PLACES=58, PETRI_TRANSITIONS=42} [2022-12-05 20:27:55,204 INFO L294 CegarLoopForPetriNet]: 33 programPoint places, 25 predicate places. [2022-12-05 20:27:55,204 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 42 transitions, 338 flow [2022-12-05 20:27:55,204 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 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) [2022-12-05 20:27:55,205 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 20:27:55,205 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 20:27:55,205 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-05 20:27:55,205 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-05 20:27:55,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 20:27:55,205 INFO L85 PathProgramCache]: Analyzing trace with hash 1065707700, now seen corresponding path program 1 times [2022-12-05 20:27:55,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 20:27:55,205 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1308002962] [2022-12-05 20:27:55,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 20:27:55,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 20:27:55,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 20:27:55,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 20:27:55,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 20:27:55,274 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1308002962] [2022-12-05 20:27:55,274 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1308002962] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 20:27:55,275 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 20:27:55,275 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-05 20:27:55,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64249588] [2022-12-05 20:27:55,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 20:27:55,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-05 20:27:55,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 20:27:55,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-05 20:27:55,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-05 20:27:55,276 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 1 out of 21 [2022-12-05 20:27:55,276 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 42 transitions, 338 flow. Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 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) [2022-12-05 20:27:55,276 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 20:27:55,276 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 1 of 21 [2022-12-05 20:27:55,276 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 20:27:55,373 INFO L130 PetriNetUnfolder]: 481/868 cut-off events. [2022-12-05 20:27:55,373 INFO L131 PetriNetUnfolder]: For 5330/5420 co-relation queries the response was YES. [2022-12-05 20:27:55,375 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4899 conditions, 868 events. 481/868 cut-off events. For 5330/5420 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 4326 event pairs, 103 based on Foata normal form. 19/873 useless extension candidates. Maximal degree in co-relation 4874. Up to 493 conditions per place. [2022-12-05 20:27:55,377 INFO L137 encePairwiseOnDemand]: 18/21 looper letters, 41 selfloop transitions, 3 changer transitions 30/75 dead transitions. [2022-12-05 20:27:55,377 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 75 transitions, 768 flow [2022-12-05 20:27:55,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-05 20:27:55,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-05 20:27:55,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 36 transitions. [2022-12-05 20:27:55,378 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.42857142857142855 [2022-12-05 20:27:55,378 INFO L175 Difference]: Start difference. First operand has 58 places, 42 transitions, 338 flow. Second operand 4 states and 36 transitions. [2022-12-05 20:27:55,378 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 75 transitions, 768 flow [2022-12-05 20:27:55,385 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 75 transitions, 659 flow, removed 37 selfloop flow, removed 3 redundant places. [2022-12-05 20:27:55,385 INFO L231 Difference]: Finished difference. Result has 60 places, 35 transitions, 263 flow [2022-12-05 20:27:55,386 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=293, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=263, PETRI_PLACES=60, PETRI_TRANSITIONS=35} [2022-12-05 20:27:55,386 INFO L294 CegarLoopForPetriNet]: 33 programPoint places, 27 predicate places. [2022-12-05 20:27:55,386 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 35 transitions, 263 flow [2022-12-05 20:27:55,386 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 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) [2022-12-05 20:27:55,386 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 20:27:55,386 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 20:27:55,386 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-05 20:27:55,387 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-05 20:27:55,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 20:27:55,387 INFO L85 PathProgramCache]: Analyzing trace with hash -154101717, now seen corresponding path program 1 times [2022-12-05 20:27:55,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 20:27:55,387 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2093665884] [2022-12-05 20:27:55,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 20:27:55,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 20:27:55,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 20:27:55,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 20:27:55,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 20:27:55,473 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2093665884] [2022-12-05 20:27:55,473 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2093665884] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 20:27:55,473 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 20:27:55,473 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-05 20:27:55,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018125234] [2022-12-05 20:27:55,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 20:27:55,474 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-05 20:27:55,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 20:27:55,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-05 20:27:55,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-12-05 20:27:55,474 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 2 out of 21 [2022-12-05 20:27:55,475 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 35 transitions, 263 flow. Second operand has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 6 states have internal predecessors, (28), 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) [2022-12-05 20:27:55,475 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 20:27:55,475 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 2 of 21 [2022-12-05 20:27:55,475 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 20:27:55,565 INFO L130 PetriNetUnfolder]: 210/399 cut-off events. [2022-12-05 20:27:55,566 INFO L131 PetriNetUnfolder]: For 3133/3315 co-relation queries the response was YES. [2022-12-05 20:27:55,567 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2012 conditions, 399 events. 210/399 cut-off events. For 3133/3315 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 1729 event pairs, 13 based on Foata normal form. 55/437 useless extension candidates. Maximal degree in co-relation 1986. Up to 230 conditions per place. [2022-12-05 20:27:55,568 INFO L137 encePairwiseOnDemand]: 14/21 looper letters, 52 selfloop transitions, 18 changer transitions 7/80 dead transitions. [2022-12-05 20:27:55,568 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 80 transitions, 776 flow [2022-12-05 20:27:55,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-05 20:27:55,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-05 20:27:55,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 77 transitions. [2022-12-05 20:27:55,570 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.5238095238095238 [2022-12-05 20:27:55,570 INFO L175 Difference]: Start difference. First operand has 60 places, 35 transitions, 263 flow. Second operand 7 states and 77 transitions. [2022-12-05 20:27:55,570 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 80 transitions, 776 flow [2022-12-05 20:27:55,574 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 80 transitions, 732 flow, removed 19 selfloop flow, removed 3 redundant places. [2022-12-05 20:27:55,574 INFO L231 Difference]: Finished difference. Result has 62 places, 44 transitions, 385 flow [2022-12-05 20:27:55,575 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=247, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=385, PETRI_PLACES=62, PETRI_TRANSITIONS=44} [2022-12-05 20:27:55,575 INFO L294 CegarLoopForPetriNet]: 33 programPoint places, 29 predicate places. [2022-12-05 20:27:55,575 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 44 transitions, 385 flow [2022-12-05 20:27:55,575 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 6 states have internal predecessors, (28), 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) [2022-12-05 20:27:55,575 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 20:27:55,575 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 20:27:55,576 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-05 20:27:55,576 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-05 20:27:55,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 20:27:55,576 INFO L85 PathProgramCache]: Analyzing trace with hash 1848858107, now seen corresponding path program 1 times [2022-12-05 20:27:55,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 20:27:55,576 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054313009] [2022-12-05 20:27:55,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 20:27:55,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 20:27:55,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 20:27:55,685 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 20:27:55,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 20:27:55,686 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2054313009] [2022-12-05 20:27:55,686 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2054313009] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 20:27:55,686 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 20:27:55,686 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-05 20:27:55,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413639542] [2022-12-05 20:27:55,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 20:27:55,686 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-05 20:27:55,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 20:27:55,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-05 20:27:55,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-12-05 20:27:55,687 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 2 out of 21 [2022-12-05 20:27:55,687 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 44 transitions, 385 flow. Second operand has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 7 states have internal predecessors, (31), 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) [2022-12-05 20:27:55,687 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 20:27:55,687 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 2 of 21 [2022-12-05 20:27:55,687 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 20:27:55,805 INFO L130 PetriNetUnfolder]: 196/377 cut-off events. [2022-12-05 20:27:55,805 INFO L131 PetriNetUnfolder]: For 1747/1840 co-relation queries the response was YES. [2022-12-05 20:27:55,806 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2094 conditions, 377 events. 196/377 cut-off events. For 1747/1840 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 1647 event pairs, 9 based on Foata normal form. 29/390 useless extension candidates. Maximal degree in co-relation 2066. Up to 216 conditions per place. [2022-12-05 20:27:55,807 INFO L137 encePairwiseOnDemand]: 14/21 looper letters, 25 selfloop transitions, 17 changer transitions 37/81 dead transitions. [2022-12-05 20:27:55,807 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 81 transitions, 818 flow [2022-12-05 20:27:55,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-05 20:27:55,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-05 20:27:55,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 82 transitions. [2022-12-05 20:27:55,808 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.43386243386243384 [2022-12-05 20:27:55,808 INFO L175 Difference]: Start difference. First operand has 62 places, 44 transitions, 385 flow. Second operand 9 states and 82 transitions. [2022-12-05 20:27:55,808 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 81 transitions, 818 flow [2022-12-05 20:27:55,814 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 81 transitions, 735 flow, removed 35 selfloop flow, removed 4 redundant places. [2022-12-05 20:27:55,815 INFO L231 Difference]: Finished difference. Result has 69 places, 32 transitions, 265 flow [2022-12-05 20:27:55,815 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=310, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=265, PETRI_PLACES=69, PETRI_TRANSITIONS=32} [2022-12-05 20:27:55,815 INFO L294 CegarLoopForPetriNet]: 33 programPoint places, 36 predicate places. [2022-12-05 20:27:55,815 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 32 transitions, 265 flow [2022-12-05 20:27:55,816 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 7 states have internal predecessors, (31), 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) [2022-12-05 20:27:55,816 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 20:27:55,816 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 20:27:55,816 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-12-05 20:27:55,816 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-05 20:27:55,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 20:27:55,816 INFO L85 PathProgramCache]: Analyzing trace with hash -1638283251, now seen corresponding path program 1 times [2022-12-05 20:27:55,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 20:27:55,816 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258108021] [2022-12-05 20:27:55,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 20:27:55,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 20:27:55,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 20:27:55,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 20:27:55,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 20:27:55,895 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [258108021] [2022-12-05 20:27:55,895 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [258108021] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 20:27:55,896 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 20:27:55,896 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-05 20:27:55,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834163416] [2022-12-05 20:27:55,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 20:27:55,896 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-05 20:27:55,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 20:27:55,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-05 20:27:55,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-05 20:27:55,897 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 21 [2022-12-05 20:27:55,897 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 32 transitions, 265 flow. Second operand has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 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) [2022-12-05 20:27:55,897 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 20:27:55,897 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 21 [2022-12-05 20:27:55,897 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 20:27:55,940 INFO L130 PetriNetUnfolder]: 87/172 cut-off events. [2022-12-05 20:27:55,940 INFO L131 PetriNetUnfolder]: For 599/599 co-relation queries the response was YES. [2022-12-05 20:27:55,941 INFO L83 FinitePrefix]: Finished finitePrefix Result has 879 conditions, 172 events. 87/172 cut-off events. For 599/599 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 488 event pairs, 12 based on Foata normal form. 1/173 useless extension candidates. Maximal degree in co-relation 858. Up to 89 conditions per place. [2022-12-05 20:27:55,941 INFO L137 encePairwiseOnDemand]: 16/21 looper letters, 0 selfloop transitions, 0 changer transitions 46/46 dead transitions. [2022-12-05 20:27:55,941 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 46 transitions, 421 flow [2022-12-05 20:27:55,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-05 20:27:55,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-05 20:27:55,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 29 transitions. [2022-12-05 20:27:55,942 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.2761904761904762 [2022-12-05 20:27:55,942 INFO L175 Difference]: Start difference. First operand has 69 places, 32 transitions, 265 flow. Second operand 5 states and 29 transitions. [2022-12-05 20:27:55,942 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 46 transitions, 421 flow [2022-12-05 20:27:55,943 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 46 transitions, 320 flow, removed 20 selfloop flow, removed 12 redundant places. [2022-12-05 20:27:55,943 INFO L231 Difference]: Finished difference. Result has 52 places, 0 transitions, 0 flow [2022-12-05 20:27:55,944 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=52, PETRI_TRANSITIONS=0} [2022-12-05 20:27:55,944 INFO L294 CegarLoopForPetriNet]: 33 programPoint places, 19 predicate places. [2022-12-05 20:27:55,944 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 0 transitions, 0 flow [2022-12-05 20:27:55,944 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 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) [2022-12-05 20:27:55,946 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 5 remaining) [2022-12-05 20:27:55,947 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 5 remaining) [2022-12-05 20:27:55,947 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 5 remaining) [2022-12-05 20:27:55,947 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 5 remaining) [2022-12-05 20:27:55,947 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 5 remaining) [2022-12-05 20:27:55,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-12-05 20:27:55,947 INFO L458 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 20:27:55,949 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-05 20:27:55,949 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-05 20:27:55,951 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.12 08:27:55 BasicIcfg [2022-12-05 20:27:55,951 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-05 20:27:55,952 INFO L158 Benchmark]: Toolchain (without parser) took 6869.40ms. Allocated memory was 235.9MB in the beginning and 420.5MB in the end (delta: 184.5MB). Free memory was 210.9MB in the beginning and 189.4MB in the end (delta: 21.5MB). Peak memory consumption was 207.1MB. Max. memory is 8.0GB. [2022-12-05 20:27:55,952 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 235.9MB. Free memory is still 212.8MB. There was no memory consumed. Max. memory is 8.0GB. [2022-12-05 20:27:55,952 INFO L158 Benchmark]: CACSL2BoogieTranslator took 413.11ms. Allocated memory is still 235.9MB. Free memory was 210.3MB in the beginning and 186.7MB in the end (delta: 23.6MB). Peak memory consumption was 23.1MB. Max. memory is 8.0GB. [2022-12-05 20:27:55,952 INFO L158 Benchmark]: Boogie Procedure Inliner took 47.89ms. Allocated memory is still 235.9MB. Free memory was 186.7MB in the beginning and 184.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-12-05 20:27:55,952 INFO L158 Benchmark]: Boogie Preprocessor took 15.94ms. Allocated memory is still 235.9MB. Free memory was 184.6MB in the beginning and 183.1MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-12-05 20:27:55,953 INFO L158 Benchmark]: RCFGBuilder took 319.74ms. Allocated memory is still 235.9MB. Free memory was 183.1MB in the beginning and 168.4MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. [2022-12-05 20:27:55,953 INFO L158 Benchmark]: TraceAbstraction took 6066.85ms. Allocated memory was 235.9MB in the beginning and 420.5MB in the end (delta: 184.5MB). Free memory was 167.9MB in the beginning and 189.4MB in the end (delta: -21.5MB). Peak memory consumption was 164.1MB. Max. memory is 8.0GB. [2022-12-05 20:27:55,954 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 235.9MB. Free memory is still 212.8MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 413.11ms. Allocated memory is still 235.9MB. Free memory was 210.3MB in the beginning and 186.7MB in the end (delta: 23.6MB). Peak memory consumption was 23.1MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 47.89ms. Allocated memory is still 235.9MB. Free memory was 186.7MB in the beginning and 184.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 15.94ms. Allocated memory is still 235.9MB. Free memory was 184.6MB in the beginning and 183.1MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 319.74ms. Allocated memory is still 235.9MB. Free memory was 183.1MB in the beginning and 168.4MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. * TraceAbstraction took 6066.85ms. Allocated memory was 235.9MB in the beginning and 420.5MB in the end (delta: 184.5MB). Free memory was 167.9MB in the beginning and 189.4MB in the end (delta: -21.5MB). Peak memory consumption was 164.1MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.2s, 94 PlacesBefore, 33 PlacesAfterwards, 82 TransitionsBefore, 21 TransitionsAfterwards, 1542 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 1 ConcurrentSequentialCompositions, 21 TrivialYvCompositions, 40 ConcurrentYvCompositions, 0 ChoiceCompositions, 62 TotalNumberOfCompositions, Independence Relation Statistics: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 1111, independent: 1074, independent conditional: 1074, independent unconditional: 0, dependent: 37, dependent conditional: 37, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 1111, independent: 1074, independent conditional: 0, independent unconditional: 1074, dependent: 37, dependent conditional: 0, dependent unconditional: 37, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 1111, independent: 1074, independent conditional: 0, independent unconditional: 1074, dependent: 37, dependent conditional: 0, dependent unconditional: 37, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 1111, independent: 1074, independent conditional: 0, independent unconditional: 1074, dependent: 37, dependent conditional: 0, dependent unconditional: 37, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 969, independent: 936, independent conditional: 0, independent unconditional: 936, dependent: 33, dependent conditional: 0, dependent unconditional: 33, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 969, independent: 923, independent conditional: 0, independent unconditional: 923, dependent: 46, dependent conditional: 0, dependent unconditional: 46, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 46, independent: 13, independent conditional: 0, independent unconditional: 13, dependent: 33, dependent conditional: 0, dependent unconditional: 33, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 129, independent: 28, independent conditional: 0, independent unconditional: 28, dependent: 101, dependent conditional: 0, dependent unconditional: 101, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1111, independent: 138, independent conditional: 0, independent unconditional: 138, dependent: 4, dependent conditional: 0, dependent unconditional: 4, unknown: 969, unknown conditional: 0, unknown unconditional: 969] , Statistics on independence cache: Total cache size (in pairs): 1493, Positive cache size: 1460, Positive conditional cache size: 0, Positive unconditional cache size: 1460, Negative cache size: 33, Negative conditional cache size: 0, Negative unconditional cache size: 33, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0, Eliminated conditions: 0, Maximal queried relation: -1 - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 9 procedures, 129 locations, 5 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 6.0s, OverallIterations: 13, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.3s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 359 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 359 mSDsluCounter, 20 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 10 mSDsCounter, 37 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 809 IncrementalHoareTripleChecker+Invalid, 846 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 37 mSolverCounterUnsat, 10 mSDtfsCounter, 809 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 47 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=385occurred in iteration=11, InterpolantAutomatonStates: 64, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 183 NumberOfCodeBlocks, 183 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 170 ConstructedInterpolants, 0 QuantifiedInterpolants, 796 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 13 InterpolantComputations, 13 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-12-05 20:27:55,966 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...