/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-NoLbe.epf --traceabstraction.use.on-demand.petri.net.difference true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-atomic/dekker.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.repeated-lipton-a802222-m [2022-12-11 20:50:06,204 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-11 20:50:06,206 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-11 20:50:06,258 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-11 20:50:06,261 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-11 20:50:06,263 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-11 20:50:06,266 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-11 20:50:06,270 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-11 20:50:06,274 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-11 20:50:06,279 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-11 20:50:06,280 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-11 20:50:06,281 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-11 20:50:06,282 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-11 20:50:06,284 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-11 20:50:06,285 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-11 20:50:06,287 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-11 20:50:06,288 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-11 20:50:06,288 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-11 20:50:06,291 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-11 20:50:06,295 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-11 20:50:06,296 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-11 20:50:06,297 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-11 20:50:06,298 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-11 20:50:06,299 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-11 20:50:06,305 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-11 20:50:06,305 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-11 20:50:06,305 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-11 20:50:06,307 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-11 20:50:06,307 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-11 20:50:06,308 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-11 20:50:06,308 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-11 20:50:06,311 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-11 20:50:06,313 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-11 20:50:06,313 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-11 20:50:06,314 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-11 20:50:06,314 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-11 20:50:06,315 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-11 20:50:06,315 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-11 20:50:06,315 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-11 20:50:06,316 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-11 20:50:06,316 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-11 20:50:06,317 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-NoLbe.epf [2022-12-11 20:50:06,348 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-11 20:50:06,349 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-11 20:50:06,350 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-11 20:50:06,350 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-11 20:50:06,351 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-11 20:50:06,352 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-11 20:50:06,352 INFO L138 SettingsManager]: * Use SBE=true [2022-12-11 20:50:06,352 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-11 20:50:06,352 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-11 20:50:06,352 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-11 20:50:06,353 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-11 20:50:06,353 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-11 20:50:06,354 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-11 20:50:06,354 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-11 20:50:06,354 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-11 20:50:06,354 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-11 20:50:06,354 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-11 20:50:06,354 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-11 20:50:06,354 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-11 20:50:06,354 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-11 20:50:06,355 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-11 20:50:06,355 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-12-11 20:50:06,355 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-11 20:50:06,355 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-11 20:50:06,355 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-11 20:50:06,355 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-11 20:50:06,355 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-11 20:50:06,356 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-12-11 20:50:06,356 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-11 20:50:06,356 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-11 20:50:06,356 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-11 20:50:06,356 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use on-demand Petri net difference -> true [2022-12-11 20:50:06,670 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-11 20:50:06,700 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-11 20:50:06,702 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-11 20:50:06,704 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-11 20:50:06,707 INFO L275 PluginConnector]: CDTParser initialized [2022-12-11 20:50:06,708 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-atomic/dekker.i [2022-12-11 20:50:07,834 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-11 20:50:08,103 INFO L351 CDTParser]: Found 1 translation units. [2022-12-11 20:50:08,104 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/dekker.i [2022-12-11 20:50:08,124 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/da0bd6d14/9c43d17086cd4d57816dd43708ea36d0/FLAGb964f58d9 [2022-12-11 20:50:08,139 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/da0bd6d14/9c43d17086cd4d57816dd43708ea36d0 [2022-12-11 20:50:08,142 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-11 20:50:08,143 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-12-11 20:50:08,145 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-11 20:50:08,145 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-11 20:50:08,148 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-11 20:50:08,148 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.12 08:50:08" (1/1) ... [2022-12-11 20:50:08,149 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@568532a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 08:50:08, skipping insertion in model container [2022-12-11 20:50:08,149 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.12 08:50:08" (1/1) ... [2022-12-11 20:50:08,155 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-11 20:50:08,202 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-11 20:50:08,337 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-12-11 20:50:08,455 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 20:50:08,456 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 20:50:08,456 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 20:50:08,456 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 20:50:08,457 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 20:50:08,457 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 20:50:08,457 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 20:50:08,458 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 20:50:08,458 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 20:50:08,458 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 20:50:08,458 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 20:50:08,459 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 20:50:08,460 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 20:50:08,460 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 20:50:08,461 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 20:50:08,462 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 20:50:08,465 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-atomic/dekker.i[31403,31416] [2022-12-11 20:50:08,471 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 20:50:08,472 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 20:50:08,473 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 20:50:08,473 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 20:50:08,475 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 20:50:08,475 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 20:50:08,475 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 20:50:08,476 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 20:50:08,476 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 20:50:08,478 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 20:50:08,478 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 20:50:08,479 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 20:50:08,479 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 20:50:08,479 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 20:50:08,480 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 20:50:08,481 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 20:50:08,482 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 20:50:08,482 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 20:50:08,482 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 20:50:08,482 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 20:50:08,483 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-atomic/dekker.i[32483,32496] [2022-12-11 20:50:08,483 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 20:50:08,483 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 20:50:08,484 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 20:50:08,484 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 20:50:08,491 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-11 20:50:08,498 INFO L203 MainTranslator]: Completed pre-run [2022-12-11 20:50:08,522 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-12-11 20:50:08,556 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 20:50:08,556 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 20:50:08,556 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 20:50:08,557 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 20:50:08,557 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 20:50:08,557 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 20:50:08,557 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 20:50:08,558 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 20:50:08,558 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 20:50:08,558 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 20:50:08,558 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 20:50:08,558 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 20:50:08,559 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 20:50:08,559 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 20:50:08,559 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 20:50:08,559 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 20:50:08,560 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-atomic/dekker.i[31403,31416] [2022-12-11 20:50:08,560 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 20:50:08,560 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 20:50:08,560 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 20:50:08,561 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 20:50:08,561 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 20:50:08,561 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 20:50:08,561 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 20:50:08,562 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 20:50:08,562 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 20:50:08,562 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 20:50:08,563 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 20:50:08,563 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 20:50:08,563 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 20:50:08,563 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 20:50:08,563 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 20:50:08,564 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 20:50:08,564 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 20:50:08,566 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 20:50:08,566 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 20:50:08,566 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 20:50:08,568 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-atomic/dekker.i[32483,32496] [2022-12-11 20:50:08,568 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 20:50:08,569 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 20:50:08,569 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 20:50:08,569 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 20:50:08,581 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-11 20:50:08,619 INFO L208 MainTranslator]: Completed translation [2022-12-11 20:50:08,619 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 08:50:08 WrapperNode [2022-12-11 20:50:08,620 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-11 20:50:08,622 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-11 20:50:08,622 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-11 20:50:08,622 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-11 20:50:08,628 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 08:50:08" (1/1) ... [2022-12-11 20:50:08,658 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 08:50:08" (1/1) ... [2022-12-11 20:50:08,679 INFO L138 Inliner]: procedures = 172, calls = 60, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 47 [2022-12-11 20:50:08,679 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-11 20:50:08,680 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-11 20:50:08,680 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-11 20:50:08,680 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-11 20:50:08,688 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 08:50:08" (1/1) ... [2022-12-11 20:50:08,688 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 08:50:08" (1/1) ... [2022-12-11 20:50:08,705 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 08:50:08" (1/1) ... [2022-12-11 20:50:08,705 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 08:50:08" (1/1) ... [2022-12-11 20:50:08,710 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 08:50:08" (1/1) ... [2022-12-11 20:50:08,713 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 08:50:08" (1/1) ... [2022-12-11 20:50:08,727 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 08:50:08" (1/1) ... [2022-12-11 20:50:08,729 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 08:50:08" (1/1) ... [2022-12-11 20:50:08,731 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-11 20:50:08,732 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-11 20:50:08,732 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-11 20:50:08,732 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-11 20:50:08,733 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 08:50:08" (1/1) ... [2022-12-11 20:50:08,737 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-11 20:50:08,752 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-11 20:50:08,773 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) [2022-12-11 20:50:08,795 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 [2022-12-11 20:50:08,810 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-11 20:50:08,811 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2022-12-11 20:50:08,811 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2022-12-11 20:50:08,811 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2022-12-11 20:50:08,811 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2022-12-11 20:50:08,811 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-11 20:50:08,811 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-11 20:50:08,811 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-11 20:50:08,811 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-11 20:50:08,811 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-11 20:50:08,811 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-11 20:50:08,812 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-11 20:50:08,812 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-11 20:50:08,812 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-11 20:50:08,813 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2022-12-11 20:50:08,956 INFO L236 CfgBuilder]: Building ICFG [2022-12-11 20:50:08,967 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-11 20:50:09,128 INFO L277 CfgBuilder]: Performing block encoding [2022-12-11 20:50:09,134 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-11 20:50:09,134 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2022-12-11 20:50:09,136 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.12 08:50:09 BoogieIcfgContainer [2022-12-11 20:50:09,136 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-11 20:50:09,138 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-11 20:50:09,138 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-11 20:50:09,141 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-11 20:50:09,141 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.12 08:50:08" (1/3) ... [2022-12-11 20:50:09,142 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74218563 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.12 08:50:09, skipping insertion in model container [2022-12-11 20:50:09,142 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 08:50:08" (2/3) ... [2022-12-11 20:50:09,142 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74218563 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.12 08:50:09, skipping insertion in model container [2022-12-11 20:50:09,142 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.12 08:50:09" (3/3) ... [2022-12-11 20:50:09,143 INFO L112 eAbstractionObserver]: Analyzing ICFG dekker.i [2022-12-11 20:50:09,159 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-11 20:50:09,160 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-12-11 20:50:09,160 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-11 20:50:09,235 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-12-11 20:50:09,273 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 94 places, 100 transitions, 216 flow [2022-12-11 20:50:09,339 INFO L130 PetriNetUnfolder]: 13/98 cut-off events. [2022-12-11 20:50:09,340 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-11 20:50:09,345 INFO L83 FinitePrefix]: Finished finitePrefix Result has 107 conditions, 98 events. 13/98 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 155 event pairs, 0 based on Foata normal form. 0/83 useless extension candidates. Maximal degree in co-relation 63. Up to 2 conditions per place. [2022-12-11 20:50:09,346 INFO L82 GeneralOperation]: Start removeDead. Operand has 94 places, 100 transitions, 216 flow [2022-12-11 20:50:09,351 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 83 places, 89 transitions, 187 flow [2022-12-11 20:50:09,366 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-11 20:50:09,373 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;@3e0130a6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, Conditionality=CONDITIONAL_DISJUNCTIVE, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-11 20:50:09,378 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2022-12-11 20:50:09,397 INFO L130 PetriNetUnfolder]: 4/49 cut-off events. [2022-12-11 20:50:09,397 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-11 20:50:09,398 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 20:50:09,398 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 20:50:09,399 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-12-11 20:50:09,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 20:50:09,403 INFO L85 PathProgramCache]: Analyzing trace with hash 1754683640, now seen corresponding path program 1 times [2022-12-11 20:50:09,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 20:50:09,412 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1489624596] [2022-12-11 20:50:09,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 20:50:09,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 20:50:09,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 20:50:09,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 20:50:09,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 20:50:09,745 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1489624596] [2022-12-11 20:50:09,746 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1489624596] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 20:50:09,746 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 20:50:09,746 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-11 20:50:09,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015024336] [2022-12-11 20:50:09,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 20:50:09,757 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-11 20:50:09,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 20:50:09,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-11 20:50:09,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-11 20:50:09,801 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 100 [2022-12-11 20:50:09,804 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 89 transitions, 187 flow. Second operand has 3 states, 3 states have (on average 83.33333333333333) internal successors, (250), 3 states have internal predecessors, (250), 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) [2022-12-11 20:50:09,804 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 20:50:09,804 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 100 [2022-12-11 20:50:09,805 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 20:50:09,882 INFO L130 PetriNetUnfolder]: 19/156 cut-off events. [2022-12-11 20:50:09,882 INFO L131 PetriNetUnfolder]: For 25/25 co-relation queries the response was YES. [2022-12-11 20:50:09,883 INFO L83 FinitePrefix]: Finished finitePrefix Result has 220 conditions, 156 events. 19/156 cut-off events. For 25/25 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 538 event pairs, 4 based on Foata normal form. 27/167 useless extension candidates. Maximal degree in co-relation 163. Up to 24 conditions per place. [2022-12-11 20:50:09,885 INFO L137 encePairwiseOnDemand]: 88/100 looper letters, 11 selfloop transitions, 3 changer transitions 1/86 dead transitions. [2022-12-11 20:50:09,885 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 86 transitions, 212 flow [2022-12-11 20:50:09,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-11 20:50:09,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-11 20:50:09,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 272 transitions. [2022-12-11 20:50:09,897 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.9066666666666666 [2022-12-11 20:50:09,901 INFO L295 CegarLoopForPetriNet]: 83 programPoint places, 2 predicate places. [2022-12-11 20:50:09,901 INFO L82 GeneralOperation]: Start removeDead. Operand has 85 places, 86 transitions, 212 flow [2022-12-11 20:50:09,903 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 84 places, 85 transitions, 210 flow [2022-12-11 20:50:09,904 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 85 transitions, 210 flow [2022-12-11 20:50:09,905 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 83.33333333333333) internal successors, (250), 3 states have internal predecessors, (250), 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) [2022-12-11 20:50:09,905 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 20:50:09,905 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 20:50:09,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-11 20:50:09,905 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr2Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-12-11 20:50:09,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 20:50:09,906 INFO L85 PathProgramCache]: Analyzing trace with hash 1421078930, now seen corresponding path program 1 times [2022-12-11 20:50:09,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 20:50:09,906 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673409874] [2022-12-11 20:50:09,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 20:50:09,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 20:50:09,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 20:50:09,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 20:50:09,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 20:50:09,999 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673409874] [2022-12-11 20:50:09,999 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [673409874] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 20:50:09,999 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 20:50:09,999 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-11 20:50:09,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198883357] [2022-12-11 20:50:09,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 20:50:10,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-11 20:50:10,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 20:50:10,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-11 20:50:10,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-11 20:50:10,002 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 100 [2022-12-11 20:50:10,003 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 85 transitions, 210 flow. Second operand has 3 states, 3 states have (on average 83.66666666666667) internal successors, (251), 3 states have internal predecessors, (251), 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) [2022-12-11 20:50:10,003 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 20:50:10,003 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 100 [2022-12-11 20:50:10,003 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 20:50:10,035 INFO L130 PetriNetUnfolder]: 13/136 cut-off events. [2022-12-11 20:50:10,035 INFO L131 PetriNetUnfolder]: For 43/47 co-relation queries the response was YES. [2022-12-11 20:50:10,036 INFO L83 FinitePrefix]: Finished finitePrefix Result has 223 conditions, 136 events. 13/136 cut-off events. For 43/47 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 424 event pairs, 5 based on Foata normal form. 0/128 useless extension candidates. Maximal degree in co-relation 159. Up to 22 conditions per place. [2022-12-11 20:50:10,037 INFO L137 encePairwiseOnDemand]: 96/100 looper letters, 9 selfloop transitions, 2 changer transitions 1/83 dead transitions. [2022-12-11 20:50:10,037 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 83 transitions, 226 flow [2022-12-11 20:50:10,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-11 20:50:10,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-11 20:50:10,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 260 transitions. [2022-12-11 20:50:10,039 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.8666666666666667 [2022-12-11 20:50:10,040 INFO L295 CegarLoopForPetriNet]: 83 programPoint places, 3 predicate places. [2022-12-11 20:50:10,040 INFO L82 GeneralOperation]: Start removeDead. Operand has 86 places, 83 transitions, 226 flow [2022-12-11 20:50:10,041 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 86 places, 82 transitions, 217 flow [2022-12-11 20:50:10,041 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 82 transitions, 217 flow [2022-12-11 20:50:10,042 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 83.66666666666667) internal successors, (251), 3 states have internal predecessors, (251), 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) [2022-12-11 20:50:10,042 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 20:50:10,042 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 20:50:10,042 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-11 20:50:10,042 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-12-11 20:50:10,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 20:50:10,043 INFO L85 PathProgramCache]: Analyzing trace with hash 374017664, now seen corresponding path program 1 times [2022-12-11 20:50:10,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 20:50:10,043 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433260840] [2022-12-11 20:50:10,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 20:50:10,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 20:50:10,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 20:50:10,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 20:50:10,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 20:50:10,143 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433260840] [2022-12-11 20:50:10,144 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [433260840] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 20:50:10,144 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 20:50:10,144 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-11 20:50:10,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929592619] [2022-12-11 20:50:10,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 20:50:10,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-11 20:50:10,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 20:50:10,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-11 20:50:10,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-11 20:50:10,149 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 100 [2022-12-11 20:50:10,149 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 82 transitions, 217 flow. Second operand has 4 states, 4 states have (on average 81.5) internal successors, (326), 4 states have internal predecessors, (326), 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) [2022-12-11 20:50:10,149 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 20:50:10,149 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 100 [2022-12-11 20:50:10,150 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 20:50:10,270 INFO L130 PetriNetUnfolder]: 65/324 cut-off events. [2022-12-11 20:50:10,271 INFO L131 PetriNetUnfolder]: For 146/154 co-relation queries the response was YES. [2022-12-11 20:50:10,274 INFO L83 FinitePrefix]: Finished finitePrefix Result has 536 conditions, 324 events. 65/324 cut-off events. For 146/154 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1627 event pairs, 15 based on Foata normal form. 0/280 useless extension candidates. Maximal degree in co-relation 430. Up to 44 conditions per place. [2022-12-11 20:50:10,277 INFO L137 encePairwiseOnDemand]: 93/100 looper letters, 15 selfloop transitions, 10 changer transitions 0/95 dead transitions. [2022-12-11 20:50:10,277 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 95 transitions, 307 flow [2022-12-11 20:50:10,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-11 20:50:10,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-11 20:50:10,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 427 transitions. [2022-12-11 20:50:10,282 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.854 [2022-12-11 20:50:10,283 INFO L295 CegarLoopForPetriNet]: 83 programPoint places, 7 predicate places. [2022-12-11 20:50:10,283 INFO L82 GeneralOperation]: Start removeDead. Operand has 90 places, 95 transitions, 307 flow [2022-12-11 20:50:10,287 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 90 places, 95 transitions, 307 flow [2022-12-11 20:50:10,287 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 95 transitions, 307 flow [2022-12-11 20:50:10,288 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 81.5) internal successors, (326), 4 states have internal predecessors, (326), 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) [2022-12-11 20:50:10,289 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 20:50:10,289 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 20:50:10,289 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-11 20:50:10,289 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-12-11 20:50:10,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 20:50:10,290 INFO L85 PathProgramCache]: Analyzing trace with hash 1717691904, now seen corresponding path program 2 times [2022-12-11 20:50:10,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 20:50:10,290 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [3109032] [2022-12-11 20:50:10,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 20:50:10,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 20:50:10,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 20:50:10,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 20:50:10,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 20:50:10,396 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [3109032] [2022-12-11 20:50:10,396 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [3109032] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 20:50:10,397 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 20:50:10,397 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-11 20:50:10,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2526761] [2022-12-11 20:50:10,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 20:50:10,401 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-11 20:50:10,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 20:50:10,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-11 20:50:10,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-11 20:50:10,404 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 100 [2022-12-11 20:50:10,404 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 95 transitions, 307 flow. Second operand has 4 states, 4 states have (on average 81.5) internal successors, (326), 4 states have internal predecessors, (326), 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) [2022-12-11 20:50:10,404 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 20:50:10,404 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 100 [2022-12-11 20:50:10,404 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 20:50:10,488 INFO L130 PetriNetUnfolder]: 135/479 cut-off events. [2022-12-11 20:50:10,489 INFO L131 PetriNetUnfolder]: For 260/273 co-relation queries the response was YES. [2022-12-11 20:50:10,491 INFO L83 FinitePrefix]: Finished finitePrefix Result has 847 conditions, 479 events. 135/479 cut-off events. For 260/273 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 2634 event pairs, 15 based on Foata normal form. 0/411 useless extension candidates. Maximal degree in co-relation 691. Up to 55 conditions per place. [2022-12-11 20:50:10,492 INFO L137 encePairwiseOnDemand]: 93/100 looper letters, 0 selfloop transitions, 0 changer transitions 104/104 dead transitions. [2022-12-11 20:50:10,492 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 104 transitions, 389 flow [2022-12-11 20:50:10,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-11 20:50:10,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-11 20:50:10,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 426 transitions. [2022-12-11 20:50:10,493 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.852 [2022-12-11 20:50:10,495 INFO L295 CegarLoopForPetriNet]: 83 programPoint places, 7 predicate places. [2022-12-11 20:50:10,495 INFO L82 GeneralOperation]: Start removeDead. Operand has 90 places, 104 transitions, 389 flow [2022-12-11 20:50:10,496 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 0 places, 0 transitions, 0 flow [2022-12-11 20:50:10,496 INFO L495 AbstractCegarLoop]: Abstraction has has 0 places, 0 transitions, 0 flow [2022-12-11 20:50:10,496 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 81.5) internal successors, (326), 4 states have internal predecessors, (326), 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) [2022-12-11 20:50:10,502 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr2Err0ASSERT_VIOLATIONERROR_FUNCTION (5 of 6 remaining) [2022-12-11 20:50:10,503 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (4 of 6 remaining) [2022-12-11 20:50:10,503 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 6 remaining) [2022-12-11 20:50:10,503 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 6 remaining) [2022-12-11 20:50:10,503 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr2Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 6 remaining) [2022-12-11 20:50:10,503 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 6 remaining) [2022-12-11 20:50:10,503 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-11 20:50:10,504 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1] [2022-12-11 20:50:10,509 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-11 20:50:10,509 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-11 20:50:10,513 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.12 08:50:10 BasicIcfg [2022-12-11 20:50:10,513 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-11 20:50:10,516 INFO L158 Benchmark]: Toolchain (without parser) took 2371.15ms. Allocated memory is still 183.5MB. Free memory was 146.8MB in the beginning and 85.1MB in the end (delta: 61.7MB). Peak memory consumption was 62.2MB. Max. memory is 8.0GB. [2022-12-11 20:50:10,516 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 183.5MB. Free memory is still 160.5MB. There was no memory consumed. Max. memory is 8.0GB. [2022-12-11 20:50:10,518 INFO L158 Benchmark]: CACSL2BoogieTranslator took 475.60ms. Allocated memory is still 183.5MB. Free memory was 146.8MB in the beginning and 122.2MB in the end (delta: 24.6MB). Peak memory consumption was 24.1MB. Max. memory is 8.0GB. [2022-12-11 20:50:10,518 INFO L158 Benchmark]: Boogie Procedure Inliner took 57.56ms. Allocated memory is still 183.5MB. Free memory was 122.2MB in the beginning and 120.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-12-11 20:50:10,519 INFO L158 Benchmark]: Boogie Preprocessor took 50.82ms. Allocated memory is still 183.5MB. Free memory was 120.1MB in the beginning and 118.5MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-12-11 20:50:10,519 INFO L158 Benchmark]: RCFGBuilder took 404.70ms. Allocated memory is still 183.5MB. Free memory was 118.5MB in the beginning and 104.4MB in the end (delta: 14.2MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. [2022-12-11 20:50:10,519 INFO L158 Benchmark]: TraceAbstraction took 1375.15ms. Allocated memory is still 183.5MB. Free memory was 103.3MB in the beginning and 85.1MB in the end (delta: 18.2MB). Peak memory consumption was 19.2MB. Max. memory is 8.0GB. [2022-12-11 20:50:10,526 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 183.5MB. Free memory is still 160.5MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 475.60ms. Allocated memory is still 183.5MB. Free memory was 146.8MB in the beginning and 122.2MB in the end (delta: 24.6MB). Peak memory consumption was 24.1MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 57.56ms. Allocated memory is still 183.5MB. Free memory was 122.2MB in the beginning and 120.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 50.82ms. Allocated memory is still 183.5MB. Free memory was 120.1MB in the beginning and 118.5MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 404.70ms. Allocated memory is still 183.5MB. Free memory was 118.5MB in the beginning and 104.4MB in the end (delta: 14.2MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. * TraceAbstraction took 1375.15ms. Allocated memory is still 183.5MB. Free memory was 103.3MB in the beginning and 85.1MB in the end (delta: 18.2MB). Peak memory consumption was 19.2MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 780]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 739]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 132 locations, 6 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 1.2s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 29 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 29 mSDsluCounter, 54 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 14 mSDsCounter, 7 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 87 IncrementalHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 7 mSolverCounterUnsat, 40 mSDtfsCounter, 87 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=307occurred in iteration=3, InterpolantAutomatonStates: 16, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 400 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 148 NumberOfCodeBlocks, 148 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 144 ConstructedInterpolants, 0 QuantifiedInterpolants, 172 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 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 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-12-11 20:50:10,538 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...