/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 -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe000_pso.oepc_pso.opt_tso.oepc_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.repeated-lipton-8d0d62b [2022-12-05 18:39:22,254 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-05 18:39:22,257 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-05 18:39:22,294 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-05 18:39:22,297 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-05 18:39:22,299 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-05 18:39:22,302 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-05 18:39:22,307 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-05 18:39:22,311 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-05 18:39:22,315 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-05 18:39:22,316 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-05 18:39:22,318 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-05 18:39:22,318 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-05 18:39:22,320 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-05 18:39:22,321 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-05 18:39:22,324 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-05 18:39:22,325 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-05 18:39:22,326 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-05 18:39:22,328 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-05 18:39:22,332 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-05 18:39:22,333 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-05 18:39:22,334 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-05 18:39:22,335 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-05 18:39:22,336 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-05 18:39:22,339 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-05 18:39:22,340 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-05 18:39:22,340 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-05 18:39:22,341 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-05 18:39:22,342 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-05 18:39:22,343 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-05 18:39:22,343 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-05 18:39:22,349 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-05 18:39:22,350 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-05 18:39:22,351 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-05 18:39:22,351 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-05 18:39:22,351 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-05 18:39:22,352 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-05 18:39:22,352 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-05 18:39:22,352 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-05 18:39:22,353 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-05 18:39:22,354 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-05 18:39:22,355 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 [2022-12-05 18:39:22,388 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-05 18:39:22,388 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-05 18:39:22,390 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-05 18:39:22,390 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-05 18:39:22,391 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-05 18:39:22,392 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-05 18:39:22,392 INFO L138 SettingsManager]: * Use SBE=true [2022-12-05 18:39:22,392 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-05 18:39:22,392 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-05 18:39:22,392 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-05 18:39:22,393 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-05 18:39:22,393 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-05 18:39:22,394 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-05 18:39:22,394 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-05 18:39:22,394 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-05 18:39:22,394 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-05 18:39:22,394 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-05 18:39:22,394 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-05 18:39:22,395 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-05 18:39:22,395 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-05 18:39:22,395 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-05 18:39:22,395 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-12-05 18:39:22,395 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-05 18:39:22,395 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-05 18:39:22,396 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-05 18:39:22,396 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-05 18:39:22,396 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-05 18:39:22,396 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-05 18:39:22,396 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-05 18:39:22,396 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-12-05 18:39:22,397 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-05 18:39:22,397 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-12-05 18:39:22,741 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-05 18:39:22,767 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-05 18:39:22,769 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-05 18:39:22,770 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-05 18:39:22,771 INFO L275 PluginConnector]: CDTParser initialized [2022-12-05 18:39:22,772 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe000_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2022-12-05 18:39:23,824 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-05 18:39:24,115 INFO L351 CDTParser]: Found 1 translation units. [2022-12-05 18:39:24,116 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe000_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2022-12-05 18:39:24,133 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5d5b6f9e3/916e0a5133ca404d85e034f4134999d9/FLAGd0be26529 [2022-12-05 18:39:24,146 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5d5b6f9e3/916e0a5133ca404d85e034f4134999d9 [2022-12-05 18:39:24,148 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-05 18:39:24,149 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-12-05 18:39:24,150 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-05 18:39:24,151 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-05 18:39:24,153 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-05 18:39:24,153 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.12 06:39:24" (1/1) ... [2022-12-05 18:39:24,154 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@53494d21 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 06:39:24, skipping insertion in model container [2022-12-05 18:39:24,155 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.12 06:39:24" (1/1) ... [2022-12-05 18:39:24,160 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-05 18:39:24,204 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-05 18:39:24,348 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/safe000_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2022-12-05 18:39:24,513 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 18:39:24,514 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 18:39:24,514 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 18:39:24,515 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 18:39:24,515 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 18:39:24,515 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 18:39:24,516 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 18:39:24,516 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 18:39:24,517 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 18:39:24,517 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 18:39:24,517 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 18:39:24,517 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 18:39:24,518 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 18:39:24,518 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 18:39:24,518 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 18:39:24,518 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 18:39:24,519 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 18:39:24,519 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 18:39:24,519 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 18:39:24,519 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 18:39:24,519 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 18:39:24,520 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 18:39:24,520 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 18:39:24,521 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 18:39:24,530 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 18:39:24,531 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 18:39:24,532 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 18:39:24,532 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 18:39:24,533 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 18:39:24,535 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 18:39:24,536 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-05 18:39:24,544 INFO L203 MainTranslator]: Completed pre-run [2022-12-05 18:39:24,558 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/safe000_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2022-12-05 18:39:24,585 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 18:39:24,585 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 18:39:24,585 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 18:39:24,586 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 18:39:24,586 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 18:39:24,586 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 18:39:24,586 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 18:39:24,587 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 18:39:24,587 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 18:39:24,588 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 18:39:24,588 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 18:39:24,588 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 18:39:24,588 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 18:39:24,588 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 18:39:24,588 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 18:39:24,589 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 18:39:24,589 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 18:39:24,590 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 18:39:24,590 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 18:39:24,590 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 18:39:24,590 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 18:39:24,590 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 18:39:24,591 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 18:39:24,591 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 18:39:24,597 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 18:39:24,597 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 18:39:24,597 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 18:39:24,598 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 18:39:24,598 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 18:39:24,601 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 18:39:24,606 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-05 18:39:24,646 INFO L208 MainTranslator]: Completed translation [2022-12-05 18:39:24,647 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 06:39:24 WrapperNode [2022-12-05 18:39:24,647 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-05 18:39:24,648 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-05 18:39:24,648 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-05 18:39:24,648 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-05 18:39:24,654 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 06:39:24" (1/1) ... [2022-12-05 18:39:24,686 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 06:39:24" (1/1) ... [2022-12-05 18:39:24,702 INFO L138 Inliner]: procedures = 176, calls = 53, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 71 [2022-12-05 18:39:24,702 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-05 18:39:24,704 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-05 18:39:24,704 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-05 18:39:24,704 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-05 18:39:24,712 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 06:39:24" (1/1) ... [2022-12-05 18:39:24,712 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 06:39:24" (1/1) ... [2022-12-05 18:39:24,724 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 06:39:24" (1/1) ... [2022-12-05 18:39:24,725 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 06:39:24" (1/1) ... [2022-12-05 18:39:24,733 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 06:39:24" (1/1) ... [2022-12-05 18:39:24,735 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 06:39:24" (1/1) ... [2022-12-05 18:39:24,736 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 06:39:24" (1/1) ... [2022-12-05 18:39:24,737 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 06:39:24" (1/1) ... [2022-12-05 18:39:24,739 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-05 18:39:24,739 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-05 18:39:24,739 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-05 18:39:24,739 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-05 18:39:24,740 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 06:39:24" (1/1) ... [2022-12-05 18:39:24,751 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-05 18:39:24,761 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-05 18:39:24,785 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 18:39:24,807 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 18:39:24,822 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-05 18:39:24,822 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-05 18:39:24,822 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-05 18:39:24,822 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-05 18:39:24,823 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-05 18:39:24,823 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2022-12-05 18:39:24,823 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2022-12-05 18:39:24,823 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2022-12-05 18:39:24,823 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2022-12-05 18:39:24,823 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2022-12-05 18:39:24,823 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2022-12-05 18:39:24,824 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-05 18:39:24,824 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-05 18:39:24,824 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-05 18:39:24,824 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-05 18:39:24,826 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 18:39:24,952 INFO L236 CfgBuilder]: Building ICFG [2022-12-05 18:39:24,955 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-05 18:39:25,158 INFO L277 CfgBuilder]: Performing block encoding [2022-12-05 18:39:25,164 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-05 18:39:25,165 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-05 18:39:25,167 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.12 06:39:25 BoogieIcfgContainer [2022-12-05 18:39:25,167 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-05 18:39:25,169 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-05 18:39:25,169 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-05 18:39:25,174 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-05 18:39:25,174 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.12 06:39:24" (1/3) ... [2022-12-05 18:39:25,175 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63e174b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.12 06:39:25, skipping insertion in model container [2022-12-05 18:39:25,183 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 06:39:24" (2/3) ... [2022-12-05 18:39:25,183 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63e174b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.12 06:39:25, skipping insertion in model container [2022-12-05 18:39:25,184 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.12 06:39:25" (3/3) ... [2022-12-05 18:39:25,185 INFO L112 eAbstractionObserver]: Analyzing ICFG safe000_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2022-12-05 18:39:25,203 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-05 18:39:25,204 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-05 18:39:25,204 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-05 18:39:25,285 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-12-05 18:39:25,327 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 93 places, 85 transitions, 185 flow [2022-12-05 18:39:25,378 INFO L130 PetriNetUnfolder]: 2/82 cut-off events. [2022-12-05 18:39:25,378 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-05 18:39:25,388 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92 conditions, 82 events. 2/82 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 47 event pairs, 0 based on Foata normal form. 0/79 useless extension candidates. Maximal degree in co-relation 64. Up to 2 conditions per place. [2022-12-05 18:39:25,388 INFO L82 GeneralOperation]: Start removeDead. Operand has 93 places, 85 transitions, 185 flow [2022-12-05 18:39:25,391 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 79 places, 70 transitions, 149 flow [2022-12-05 18:39:25,399 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-05 18:39:25,406 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;@6e8393a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, Conditionality=CONDITIONAL_DISJUNCTIVE, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-05 18:39:25,407 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-12-05 18:39:25,430 INFO L130 PetriNetUnfolder]: 1/69 cut-off events. [2022-12-05 18:39:25,430 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-05 18:39:25,430 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 18:39:25,431 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 18:39:25,431 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 1 more)] === [2022-12-05 18:39:25,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 18:39:25,436 INFO L85 PathProgramCache]: Analyzing trace with hash 2225101, now seen corresponding path program 1 times [2022-12-05 18:39:25,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 18:39:25,444 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [414322726] [2022-12-05 18:39:25,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 18:39:25,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 18:39:25,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 18:39:26,276 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 18:39:26,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 18:39:26,277 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [414322726] [2022-12-05 18:39:26,277 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [414322726] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 18:39:26,278 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 18:39:26,278 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-05 18:39:26,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059003183] [2022-12-05 18:39:26,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 18:39:26,286 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-05 18:39:26,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 18:39:26,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-05 18:39:26,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-12-05 18:39:26,316 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 85 [2022-12-05 18:39:26,323 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 70 transitions, 149 flow. Second operand has 7 states, 7 states have (on average 64.85714285714286) internal successors, (454), 7 states have internal predecessors, (454), 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 18:39:26,324 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 18:39:26,324 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 85 [2022-12-05 18:39:26,325 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 18:39:26,778 INFO L130 PetriNetUnfolder]: 257/689 cut-off events. [2022-12-05 18:39:26,779 INFO L131 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2022-12-05 18:39:26,784 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1170 conditions, 689 events. 257/689 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 3841 event pairs, 38 based on Foata normal form. 28/693 useless extension candidates. Maximal degree in co-relation 1135. Up to 124 conditions per place. [2022-12-05 18:39:26,788 INFO L137 encePairwiseOnDemand]: 74/85 looper letters, 27 selfloop transitions, 6 changer transitions 50/134 dead transitions. [2022-12-05 18:39:26,788 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 134 transitions, 452 flow [2022-12-05 18:39:26,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-12-05 18:39:26,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-12-05 18:39:26,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 908 transitions. [2022-12-05 18:39:26,814 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.8217194570135746 [2022-12-05 18:39:26,816 INFO L175 Difference]: Start difference. First operand has 79 places, 70 transitions, 149 flow. Second operand 13 states and 908 transitions. [2022-12-05 18:39:26,816 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 134 transitions, 452 flow [2022-12-05 18:39:26,824 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 134 transitions, 446 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-12-05 18:39:26,829 INFO L231 Difference]: Finished difference. Result has 100 places, 73 transitions, 230 flow [2022-12-05 18:39:26,830 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=230, PETRI_PLACES=100, PETRI_TRANSITIONS=73} [2022-12-05 18:39:26,833 INFO L294 CegarLoopForPetriNet]: 79 programPoint places, 21 predicate places. [2022-12-05 18:39:26,833 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 73 transitions, 230 flow [2022-12-05 18:39:26,834 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 64.85714285714286) internal successors, (454), 7 states have internal predecessors, (454), 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 18:39:26,834 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 18:39:26,834 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 18:39:26,834 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-05 18:39:26,834 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 1 more)] === [2022-12-05 18:39:26,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 18:39:26,836 INFO L85 PathProgramCache]: Analyzing trace with hash -167567346, now seen corresponding path program 1 times [2022-12-05 18:39:26,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 18:39:26,837 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1069320813] [2022-12-05 18:39:26,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 18:39:26,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 18:39:26,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 18:39:27,201 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 18:39:27,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 18:39:27,202 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1069320813] [2022-12-05 18:39:27,202 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1069320813] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 18:39:27,202 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 18:39:27,202 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-05 18:39:27,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001372811] [2022-12-05 18:39:27,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 18:39:27,205 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-05 18:39:27,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 18:39:27,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-05 18:39:27,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-12-05 18:39:27,208 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 85 [2022-12-05 18:39:27,209 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 73 transitions, 230 flow. Second operand has 7 states, 7 states have (on average 65.0) internal successors, (455), 7 states have internal predecessors, (455), 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 18:39:27,209 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 18:39:27,210 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 85 [2022-12-05 18:39:27,210 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 18:39:27,492 INFO L130 PetriNetUnfolder]: 104/437 cut-off events. [2022-12-05 18:39:27,493 INFO L131 PetriNetUnfolder]: For 796/1077 co-relation queries the response was YES. [2022-12-05 18:39:27,495 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1247 conditions, 437 events. 104/437 cut-off events. For 796/1077 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 2324 event pairs, 8 based on Foata normal form. 13/437 useless extension candidates. Maximal degree in co-relation 1201. Up to 79 conditions per place. [2022-12-05 18:39:27,497 INFO L137 encePairwiseOnDemand]: 75/85 looper letters, 26 selfloop transitions, 12 changer transitions 43/132 dead transitions. [2022-12-05 18:39:27,497 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 132 transitions, 824 flow [2022-12-05 18:39:27,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-12-05 18:39:27,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-12-05 18:39:27,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 888 transitions. [2022-12-05 18:39:27,500 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.8036199095022625 [2022-12-05 18:39:27,500 INFO L175 Difference]: Start difference. First operand has 100 places, 73 transitions, 230 flow. Second operand 13 states and 888 transitions. [2022-12-05 18:39:27,500 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 132 transitions, 824 flow [2022-12-05 18:39:27,508 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 132 transitions, 796 flow, removed 12 selfloop flow, removed 4 redundant places. [2022-12-05 18:39:27,509 INFO L231 Difference]: Finished difference. Result has 111 places, 80 transitions, 349 flow [2022-12-05 18:39:27,510 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=222, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=349, PETRI_PLACES=111, PETRI_TRANSITIONS=80} [2022-12-05 18:39:27,510 INFO L294 CegarLoopForPetriNet]: 79 programPoint places, 32 predicate places. [2022-12-05 18:39:27,510 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 80 transitions, 349 flow [2022-12-05 18:39:27,511 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 65.0) internal successors, (455), 7 states have internal predecessors, (455), 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 18:39:27,511 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 18:39:27,511 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 18:39:27,511 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-05 18:39:27,512 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 1 more)] === [2022-12-05 18:39:27,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 18:39:27,512 INFO L85 PathProgramCache]: Analyzing trace with hash -1864750029, now seen corresponding path program 1 times [2022-12-05 18:39:27,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 18:39:27,513 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509372514] [2022-12-05 18:39:27,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 18:39:27,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 18:39:27,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 18:39:27,746 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 18:39:27,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 18:39:27,746 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [509372514] [2022-12-05 18:39:27,746 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [509372514] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 18:39:27,746 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 18:39:27,747 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-05 18:39:27,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900992623] [2022-12-05 18:39:27,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 18:39:27,747 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-05 18:39:27,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 18:39:27,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-05 18:39:27,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-12-05 18:39:27,749 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 85 [2022-12-05 18:39:27,750 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 80 transitions, 349 flow. Second operand has 8 states, 8 states have (on average 65.0) internal successors, (520), 8 states have internal predecessors, (520), 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 18:39:27,750 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 18:39:27,750 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 85 [2022-12-05 18:39:27,750 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 18:39:27,900 INFO L130 PetriNetUnfolder]: 53/301 cut-off events. [2022-12-05 18:39:27,900 INFO L131 PetriNetUnfolder]: For 989/1553 co-relation queries the response was YES. [2022-12-05 18:39:27,902 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1013 conditions, 301 events. 53/301 cut-off events. For 989/1553 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1447 event pairs, 13 based on Foata normal form. 6/295 useless extension candidates. Maximal degree in co-relation 955. Up to 52 conditions per place. [2022-12-05 18:39:27,903 INFO L137 encePairwiseOnDemand]: 75/85 looper letters, 25 selfloop transitions, 9 changer transitions 17/102 dead transitions. [2022-12-05 18:39:27,903 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 102 transitions, 648 flow [2022-12-05 18:39:27,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-05 18:39:27,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-12-05 18:39:27,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 549 transitions. [2022-12-05 18:39:27,905 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.8073529411764706 [2022-12-05 18:39:27,905 INFO L175 Difference]: Start difference. First operand has 111 places, 80 transitions, 349 flow. Second operand 8 states and 549 transitions. [2022-12-05 18:39:27,905 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 102 transitions, 648 flow [2022-12-05 18:39:27,910 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 102 transitions, 584 flow, removed 32 selfloop flow, removed 9 redundant places. [2022-12-05 18:39:27,911 INFO L231 Difference]: Finished difference. Result has 104 places, 76 transitions, 323 flow [2022-12-05 18:39:27,912 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=325, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=323, PETRI_PLACES=104, PETRI_TRANSITIONS=76} [2022-12-05 18:39:27,912 INFO L294 CegarLoopForPetriNet]: 79 programPoint places, 25 predicate places. [2022-12-05 18:39:27,913 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 76 transitions, 323 flow [2022-12-05 18:39:27,913 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 65.0) internal successors, (520), 8 states have internal predecessors, (520), 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 18:39:27,913 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 18:39:27,913 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 18:39:27,913 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-05 18:39:27,914 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 1 more)] === [2022-12-05 18:39:27,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 18:39:27,914 INFO L85 PathProgramCache]: Analyzing trace with hash 1292879327, now seen corresponding path program 1 times [2022-12-05 18:39:27,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 18:39:27,915 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692499359] [2022-12-05 18:39:27,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 18:39:27,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 18:39:27,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 18:39:28,110 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 18:39:28,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 18:39:28,113 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [692499359] [2022-12-05 18:39:28,118 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [692499359] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 18:39:28,119 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 18:39:28,119 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-05 18:39:28,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442315277] [2022-12-05 18:39:28,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 18:39:28,121 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-05 18:39:28,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 18:39:28,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-05 18:39:28,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-12-05 18:39:28,123 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 85 [2022-12-05 18:39:28,124 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 76 transitions, 323 flow. Second operand has 7 states, 7 states have (on average 65.28571428571429) internal successors, (457), 7 states have internal predecessors, (457), 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 18:39:28,124 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 18:39:28,124 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 85 [2022-12-05 18:39:28,124 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 18:39:28,286 INFO L130 PetriNetUnfolder]: 29/219 cut-off events. [2022-12-05 18:39:28,286 INFO L131 PetriNetUnfolder]: For 669/938 co-relation queries the response was YES. [2022-12-05 18:39:28,287 INFO L83 FinitePrefix]: Finished finitePrefix Result has 681 conditions, 219 events. 29/219 cut-off events. For 669/938 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 914 event pairs, 0 based on Foata normal form. 6/219 useless extension candidates. Maximal degree in co-relation 627. Up to 36 conditions per place. [2022-12-05 18:39:28,288 INFO L137 encePairwiseOnDemand]: 76/85 looper letters, 25 selfloop transitions, 10 changer transitions 17/103 dead transitions. [2022-12-05 18:39:28,288 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 103 transitions, 665 flow [2022-12-05 18:39:28,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-05 18:39:28,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-12-05 18:39:28,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 676 transitions. [2022-12-05 18:39:28,290 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.7952941176470588 [2022-12-05 18:39:28,290 INFO L175 Difference]: Start difference. First operand has 104 places, 76 transitions, 323 flow. Second operand 10 states and 676 transitions. [2022-12-05 18:39:28,291 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 103 transitions, 665 flow [2022-12-05 18:39:28,294 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 103 transitions, 547 flow, removed 32 selfloop flow, removed 12 redundant places. [2022-12-05 18:39:28,296 INFO L231 Difference]: Finished difference. Result has 107 places, 79 transitions, 354 flow [2022-12-05 18:39:28,297 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=266, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=354, PETRI_PLACES=107, PETRI_TRANSITIONS=79} [2022-12-05 18:39:28,297 INFO L294 CegarLoopForPetriNet]: 79 programPoint places, 28 predicate places. [2022-12-05 18:39:28,297 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 79 transitions, 354 flow [2022-12-05 18:39:28,298 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 65.28571428571429) internal successors, (457), 7 states have internal predecessors, (457), 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 18:39:28,298 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 18:39:28,298 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 18:39:28,298 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-05 18:39:28,298 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 1 more)] === [2022-12-05 18:39:28,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 18:39:28,299 INFO L85 PathProgramCache]: Analyzing trace with hash -444610603, now seen corresponding path program 2 times [2022-12-05 18:39:28,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 18:39:28,299 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1081061893] [2022-12-05 18:39:28,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 18:39:28,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 18:39:28,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 18:39:28,498 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 18:39:28,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 18:39:28,499 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1081061893] [2022-12-05 18:39:28,499 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1081061893] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 18:39:28,499 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 18:39:28,499 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-05 18:39:28,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743364783] [2022-12-05 18:39:28,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 18:39:28,500 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-05 18:39:28,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 18:39:28,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-05 18:39:28,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-12-05 18:39:28,501 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 85 [2022-12-05 18:39:28,502 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 79 transitions, 354 flow. Second operand has 7 states, 7 states have (on average 65.28571428571429) internal successors, (457), 7 states have internal predecessors, (457), 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 18:39:28,502 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 18:39:28,502 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 85 [2022-12-05 18:39:28,502 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 18:39:28,691 INFO L130 PetriNetUnfolder]: 20/184 cut-off events. [2022-12-05 18:39:28,692 INFO L131 PetriNetUnfolder]: For 529/708 co-relation queries the response was YES. [2022-12-05 18:39:28,693 INFO L83 FinitePrefix]: Finished finitePrefix Result has 543 conditions, 184 events. 20/184 cut-off events. For 529/708 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 666 event pairs, 0 based on Foata normal form. 4/185 useless extension candidates. Maximal degree in co-relation 497. Up to 28 conditions per place. [2022-12-05 18:39:28,693 INFO L137 encePairwiseOnDemand]: 74/85 looper letters, 25 selfloop transitions, 12 changer transitions 16/104 dead transitions. [2022-12-05 18:39:28,694 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 104 transitions, 662 flow [2022-12-05 18:39:28,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-12-05 18:39:28,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-12-05 18:39:28,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 869 transitions. [2022-12-05 18:39:28,696 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.7864253393665158 [2022-12-05 18:39:28,697 INFO L175 Difference]: Start difference. First operand has 107 places, 79 transitions, 354 flow. Second operand 13 states and 869 transitions. [2022-12-05 18:39:28,697 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 104 transitions, 662 flow [2022-12-05 18:39:28,700 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 104 transitions, 590 flow, removed 36 selfloop flow, removed 6 redundant places. [2022-12-05 18:39:28,702 INFO L231 Difference]: Finished difference. Result has 118 places, 80 transitions, 394 flow [2022-12-05 18:39:28,702 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=326, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=394, PETRI_PLACES=118, PETRI_TRANSITIONS=80} [2022-12-05 18:39:28,705 INFO L294 CegarLoopForPetriNet]: 79 programPoint places, 39 predicate places. [2022-12-05 18:39:28,705 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 80 transitions, 394 flow [2022-12-05 18:39:28,705 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 65.28571428571429) internal successors, (457), 7 states have internal predecessors, (457), 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 18:39:28,705 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 18:39:28,705 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 18:39:28,706 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-05 18:39:28,706 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 1 more)] === [2022-12-05 18:39:28,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 18:39:28,710 INFO L85 PathProgramCache]: Analyzing trace with hash 248825716, now seen corresponding path program 1 times [2022-12-05 18:39:28,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 18:39:28,710 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714787056] [2022-12-05 18:39:28,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 18:39:28,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 18:39:28,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 18:39:28,904 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 18:39:28,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 18:39:28,904 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [714787056] [2022-12-05 18:39:28,904 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [714787056] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 18:39:28,904 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 18:39:28,905 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-05 18:39:28,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587477812] [2022-12-05 18:39:28,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 18:39:28,905 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-05 18:39:28,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 18:39:28,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-05 18:39:28,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-12-05 18:39:28,907 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 85 [2022-12-05 18:39:28,908 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 80 transitions, 394 flow. Second operand has 8 states, 8 states have (on average 65.125) internal successors, (521), 8 states have internal predecessors, (521), 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 18:39:28,908 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 18:39:28,908 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 85 [2022-12-05 18:39:28,908 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 18:39:29,003 INFO L130 PetriNetUnfolder]: 13/159 cut-off events. [2022-12-05 18:39:29,004 INFO L131 PetriNetUnfolder]: For 555/775 co-relation queries the response was YES. [2022-12-05 18:39:29,005 INFO L83 FinitePrefix]: Finished finitePrefix Result has 502 conditions, 159 events. 13/159 cut-off events. For 555/775 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 584 event pairs, 1 based on Foata normal form. 5/160 useless extension candidates. Maximal degree in co-relation 470. Up to 22 conditions per place. [2022-12-05 18:39:29,005 INFO L137 encePairwiseOnDemand]: 74/85 looper letters, 15 selfloop transitions, 9 changer transitions 18/93 dead transitions. [2022-12-05 18:39:29,005 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 93 transitions, 624 flow [2022-12-05 18:39:29,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-05 18:39:29,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-12-05 18:39:29,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 539 transitions. [2022-12-05 18:39:29,008 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.7926470588235294 [2022-12-05 18:39:29,008 INFO L175 Difference]: Start difference. First operand has 118 places, 80 transitions, 394 flow. Second operand 8 states and 539 transitions. [2022-12-05 18:39:29,008 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 93 transitions, 624 flow [2022-12-05 18:39:29,011 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 93 transitions, 541 flow, removed 40 selfloop flow, removed 13 redundant places. [2022-12-05 18:39:29,014 INFO L231 Difference]: Finished difference. Result has 108 places, 74 transitions, 316 flow [2022-12-05 18:39:29,015 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=339, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=316, PETRI_PLACES=108, PETRI_TRANSITIONS=74} [2022-12-05 18:39:29,017 INFO L294 CegarLoopForPetriNet]: 79 programPoint places, 29 predicate places. [2022-12-05 18:39:29,017 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 74 transitions, 316 flow [2022-12-05 18:39:29,018 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 65.125) internal successors, (521), 8 states have internal predecessors, (521), 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 18:39:29,018 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 18:39:29,018 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 18:39:29,018 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-05 18:39:29,019 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 1 more)] === [2022-12-05 18:39:29,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 18:39:29,021 INFO L85 PathProgramCache]: Analyzing trace with hash -1775261678, now seen corresponding path program 1 times [2022-12-05 18:39:29,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 18:39:29,022 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401245584] [2022-12-05 18:39:29,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 18:39:29,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 18:39:29,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 18:39:29,218 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 18:39:29,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 18:39:29,219 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [401245584] [2022-12-05 18:39:29,219 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [401245584] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 18:39:29,219 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 18:39:29,219 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-05 18:39:29,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378554407] [2022-12-05 18:39:29,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 18:39:29,220 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-05 18:39:29,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 18:39:29,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-05 18:39:29,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-12-05 18:39:29,221 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 85 [2022-12-05 18:39:29,222 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 74 transitions, 316 flow. Second operand has 8 states, 8 states have (on average 65.25) internal successors, (522), 8 states have internal predecessors, (522), 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 18:39:29,222 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 18:39:29,222 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 85 [2022-12-05 18:39:29,222 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 18:39:29,311 INFO L130 PetriNetUnfolder]: 4/102 cut-off events. [2022-12-05 18:39:29,311 INFO L131 PetriNetUnfolder]: For 207/269 co-relation queries the response was YES. [2022-12-05 18:39:29,312 INFO L83 FinitePrefix]: Finished finitePrefix Result has 275 conditions, 102 events. 4/102 cut-off events. For 207/269 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 219 event pairs, 0 based on Foata normal form. 4/105 useless extension candidates. Maximal degree in co-relation 252. Up to 11 conditions per place. [2022-12-05 18:39:29,312 INFO L137 encePairwiseOnDemand]: 76/85 looper letters, 16 selfloop transitions, 4 changer transitions 11/81 dead transitions. [2022-12-05 18:39:29,313 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 81 transitions, 410 flow [2022-12-05 18:39:29,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-05 18:39:29,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-05 18:39:29,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 596 transitions. [2022-12-05 18:39:29,315 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.7790849673202614 [2022-12-05 18:39:29,315 INFO L175 Difference]: Start difference. First operand has 108 places, 74 transitions, 316 flow. Second operand 9 states and 596 transitions. [2022-12-05 18:39:29,315 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 81 transitions, 410 flow [2022-12-05 18:39:29,317 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 81 transitions, 334 flow, removed 11 selfloop flow, removed 15 redundant places. [2022-12-05 18:39:29,318 INFO L231 Difference]: Finished difference. Result has 102 places, 68 transitions, 208 flow [2022-12-05 18:39:29,318 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=248, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=208, PETRI_PLACES=102, PETRI_TRANSITIONS=68} [2022-12-05 18:39:29,319 INFO L294 CegarLoopForPetriNet]: 79 programPoint places, 23 predicate places. [2022-12-05 18:39:29,319 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 68 transitions, 208 flow [2022-12-05 18:39:29,319 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 65.25) internal successors, (522), 8 states have internal predecessors, (522), 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 18:39:29,319 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 18:39:29,320 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 18:39:29,320 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-05 18:39:29,320 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 1 more)] === [2022-12-05 18:39:29,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 18:39:29,320 INFO L85 PathProgramCache]: Analyzing trace with hash 1792779188, now seen corresponding path program 2 times [2022-12-05 18:39:29,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 18:39:29,321 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871916683] [2022-12-05 18:39:29,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 18:39:29,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 18:39:29,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 18:39:29,466 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 18:39:29,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 18:39:29,467 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1871916683] [2022-12-05 18:39:29,467 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1871916683] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 18:39:29,467 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 18:39:29,467 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-05 18:39:29,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432360627] [2022-12-05 18:39:29,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 18:39:29,468 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-05 18:39:29,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 18:39:29,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-05 18:39:29,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-05 18:39:29,469 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 85 [2022-12-05 18:39:29,470 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 68 transitions, 208 flow. Second operand has 7 states, 7 states have (on average 69.71428571428571) internal successors, (488), 7 states have internal predecessors, (488), 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 18:39:29,470 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 18:39:29,470 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 85 [2022-12-05 18:39:29,470 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 18:39:29,560 INFO L130 PetriNetUnfolder]: 5/80 cut-off events. [2022-12-05 18:39:29,560 INFO L131 PetriNetUnfolder]: For 71/77 co-relation queries the response was YES. [2022-12-05 18:39:29,560 INFO L83 FinitePrefix]: Finished finitePrefix Result has 168 conditions, 80 events. 5/80 cut-off events. For 71/77 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 75 event pairs, 1 based on Foata normal form. 2/81 useless extension candidates. Maximal degree in co-relation 153. Up to 7 conditions per place. [2022-12-05 18:39:29,561 INFO L137 encePairwiseOnDemand]: 78/85 looper letters, 0 selfloop transitions, 0 changer transitions 73/73 dead transitions. [2022-12-05 18:39:29,561 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 73 transitions, 266 flow [2022-12-05 18:39:29,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-05 18:39:29,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-12-05 18:39:29,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 701 transitions. [2022-12-05 18:39:29,563 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.8247058823529412 [2022-12-05 18:39:29,563 INFO L175 Difference]: Start difference. First operand has 102 places, 68 transitions, 208 flow. Second operand 10 states and 701 transitions. [2022-12-05 18:39:29,563 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 73 transitions, 266 flow [2022-12-05 18:39:29,564 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 73 transitions, 212 flow, removed 12 selfloop flow, removed 14 redundant places. [2022-12-05 18:39:29,565 INFO L231 Difference]: Finished difference. Result has 88 places, 0 transitions, 0 flow [2022-12-05 18:39:29,565 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=0, PETRI_PLACES=88, PETRI_TRANSITIONS=0} [2022-12-05 18:39:29,565 INFO L294 CegarLoopForPetriNet]: 79 programPoint places, 9 predicate places. [2022-12-05 18:39:29,566 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 0 transitions, 0 flow [2022-12-05 18:39:29,566 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 69.71428571428571) internal successors, (488), 7 states have internal predecessors, (488), 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 18:39:29,569 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2022-12-05 18:39:29,569 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2022-12-05 18:39:29,569 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2022-12-05 18:39:29,569 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2022-12-05 18:39:29,569 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-05 18:39:29,570 INFO L458 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1] [2022-12-05 18:39:29,572 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-05 18:39:29,573 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-05 18:39:29,577 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.12 06:39:29 BasicIcfg [2022-12-05 18:39:29,577 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-05 18:39:29,577 INFO L158 Benchmark]: Toolchain (without parser) took 5428.37ms. Allocated memory was 181.4MB in the beginning and 262.1MB in the end (delta: 80.7MB). Free memory was 156.1MB in the beginning and 163.0MB in the end (delta: -6.9MB). Peak memory consumption was 75.1MB. Max. memory is 8.0GB. [2022-12-05 18:39:29,578 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 181.4MB. Free memory was 158.0MB in the beginning and 158.0MB in the end (delta: 63.4kB). There was no memory consumed. Max. memory is 8.0GB. [2022-12-05 18:39:29,578 INFO L158 Benchmark]: CACSL2BoogieTranslator took 497.17ms. Allocated memory is still 181.4MB. Free memory was 156.1MB in the beginning and 132.7MB in the end (delta: 23.4MB). Peak memory consumption was 23.1MB. Max. memory is 8.0GB. [2022-12-05 18:39:29,578 INFO L158 Benchmark]: Boogie Procedure Inliner took 54.37ms. Allocated memory is still 181.4MB. Free memory was 132.7MB in the beginning and 130.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-12-05 18:39:29,578 INFO L158 Benchmark]: Boogie Preprocessor took 35.02ms. Allocated memory is still 181.4MB. Free memory was 130.6MB in the beginning and 129.1MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-12-05 18:39:29,579 INFO L158 Benchmark]: RCFGBuilder took 427.75ms. Allocated memory is still 181.4MB. Free memory was 129.1MB in the beginning and 115.4MB in the end (delta: 13.6MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. [2022-12-05 18:39:29,579 INFO L158 Benchmark]: TraceAbstraction took 4408.15ms. Allocated memory was 181.4MB in the beginning and 262.1MB in the end (delta: 80.7MB). Free memory was 114.9MB in the beginning and 163.0MB in the end (delta: -48.1MB). Peak memory consumption was 34.2MB. Max. memory is 8.0GB. [2022-12-05 18:39:29,580 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 181.4MB. Free memory was 158.0MB in the beginning and 158.0MB in the end (delta: 63.4kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 497.17ms. Allocated memory is still 181.4MB. Free memory was 156.1MB in the beginning and 132.7MB in the end (delta: 23.4MB). Peak memory consumption was 23.1MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 54.37ms. Allocated memory is still 181.4MB. Free memory was 132.7MB in the beginning and 130.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 35.02ms. Allocated memory is still 181.4MB. Free memory was 130.6MB in the beginning and 129.1MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 427.75ms. Allocated memory is still 181.4MB. Free memory was 129.1MB in the beginning and 115.4MB in the end (delta: 13.6MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. * TraceAbstraction took 4408.15ms. Allocated memory was 181.4MB in the beginning and 262.1MB in the end (delta: 80.7MB). Free memory was 114.9MB in the beginning and 163.0MB in the end (delta: -48.1MB). Peak memory consumption was 34.2MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 108 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 4.3s, OverallIterations: 8, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 331 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 331 mSDsluCounter, 571 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 433 mSDsCounter, 41 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 467 IncrementalHoareTripleChecker+Invalid, 508 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 41 mSolverCounterUnsat, 138 mSDtfsCounter, 467 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 108 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=394occurred in iteration=5, InterpolantAutomatonStates: 84, 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, 0.1s SatisfiabilityAnalysisTime, 2.0s InterpolantComputationTime, 440 NumberOfCodeBlocks, 440 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 432 ConstructedInterpolants, 0 QuantifiedInterpolants, 2436 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 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 18:39:29,602 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...