/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf --traceabstraction.use.on-demand.petri.net.difference true --traceabstraction.size.reduction.to.apply.after.petri.net.difference REMOVE_DEAD -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe014_pso.oepc_pso.opt_tso.oepc_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.repeated-lipton-a802222-m [2022-12-12 21:42:19,883 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-12 21:42:19,885 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-12 21:42:19,927 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-12 21:42:19,929 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-12 21:42:19,930 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-12 21:42:19,933 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-12 21:42:19,935 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-12 21:42:19,939 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-12 21:42:19,942 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-12 21:42:19,943 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-12 21:42:19,944 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-12 21:42:19,944 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-12 21:42:19,946 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-12 21:42:19,947 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-12 21:42:19,950 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-12 21:42:19,951 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-12 21:42:19,951 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-12 21:42:19,952 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-12 21:42:19,953 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-12 21:42:19,953 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-12 21:42:19,956 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-12 21:42:19,957 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-12 21:42:19,958 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-12 21:42:19,964 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-12 21:42:19,964 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-12 21:42:19,964 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-12 21:42:19,965 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-12 21:42:19,965 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-12 21:42:19,966 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-12 21:42:19,966 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-12 21:42:19,966 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-12 21:42:19,966 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-12 21:42:19,967 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-12 21:42:19,967 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-12 21:42:19,968 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-12 21:42:19,968 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-12 21:42:19,973 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-12 21:42:19,973 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-12 21:42:19,974 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-12 21:42:19,975 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-12 21:42:19,975 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf [2022-12-12 21:42:20,002 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-12 21:42:20,002 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-12 21:42:20,003 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-12 21:42:20,003 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-12 21:42:20,004 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-12 21:42:20,004 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-12 21:42:20,004 INFO L138 SettingsManager]: * Use SBE=true [2022-12-12 21:42:20,005 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-12 21:42:20,005 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-12 21:42:20,005 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-12 21:42:20,005 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-12 21:42:20,005 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-12 21:42:20,006 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-12 21:42:20,006 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-12 21:42:20,006 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-12 21:42:20,006 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-12 21:42:20,006 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-12 21:42:20,006 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-12 21:42:20,006 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-12 21:42:20,006 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-12 21:42:20,006 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-12 21:42:20,006 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-12-12 21:42:20,006 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-12 21:42:20,006 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-12 21:42:20,007 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-12 21:42:20,007 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-12 21:42:20,007 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-12 21:42:20,007 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-12 21:42:20,007 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-12 21:42:20,007 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-12 21:42:20,007 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use on-demand Petri net difference -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Size reduction to apply after Petri net difference -> REMOVE_DEAD [2022-12-12 21:42:20,260 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-12 21:42:20,279 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-12 21:42:20,281 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-12 21:42:20,282 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-12 21:42:20,283 INFO L275 PluginConnector]: CDTParser initialized [2022-12-12 21:42:20,284 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe014_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2022-12-12 21:42:21,168 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-12 21:42:21,417 INFO L351 CDTParser]: Found 1 translation units. [2022-12-12 21:42:21,418 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe014_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2022-12-12 21:42:21,428 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4ca97a735/a3511186a3f84ec880e072f820834ac8/FLAGa77007c18 [2022-12-12 21:42:21,443 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4ca97a735/a3511186a3f84ec880e072f820834ac8 [2022-12-12 21:42:21,445 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-12 21:42:21,446 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-12-12 21:42:21,447 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-12 21:42:21,447 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-12 21:42:21,449 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-12 21:42:21,455 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.12 09:42:21" (1/1) ... [2022-12-12 21:42:21,456 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7967096b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 09:42:21, skipping insertion in model container [2022-12-12 21:42:21,456 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.12 09:42:21" (1/1) ... [2022-12-12 21:42:21,461 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-12 21:42:21,512 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-12 21:42:21,658 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/safe014_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2022-12-12 21:42:21,795 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 21:42:21,795 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 21:42:21,796 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 21:42:21,796 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 21:42:21,796 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 21:42:21,796 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 21:42:21,797 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 21:42:21,797 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 21:42:21,798 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 21:42:21,798 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 21:42:21,798 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 21:42:21,798 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 21:42:21,798 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 21:42:21,798 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 21:42:21,798 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 21:42:21,799 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 21:42:21,799 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 21:42:21,799 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 21:42:21,799 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 21:42:21,799 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 21:42:21,800 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 21:42:21,800 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 21:42:21,800 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 21:42:21,801 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 21:42:21,808 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 21:42:21,808 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 21:42:21,809 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 21:42:21,809 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 21:42:21,810 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 21:42:21,812 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 21:42:21,813 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-12 21:42:21,820 INFO L203 MainTranslator]: Completed pre-run [2022-12-12 21:42:21,830 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/safe014_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2022-12-12 21:42:21,852 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 21:42:21,852 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 21:42:21,852 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 21:42:21,852 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 21:42:21,853 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 21:42:21,853 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 21:42:21,853 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 21:42:21,853 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 21:42:21,853 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 21:42:21,853 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 21:42:21,854 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 21:42:21,854 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 21:42:21,854 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 21:42:21,854 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 21:42:21,854 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 21:42:21,854 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 21:42:21,855 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 21:42:21,855 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 21:42:21,855 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 21:42:21,857 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 21:42:21,857 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 21:42:21,857 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 21:42:21,857 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 21:42:21,858 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 21:42:21,861 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 21:42:21,862 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 21:42:21,862 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 21:42:21,862 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 21:42:21,862 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 21:42:21,865 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 21:42:21,869 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-12 21:42:21,900 INFO L208 MainTranslator]: Completed translation [2022-12-12 21:42:21,900 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 09:42:21 WrapperNode [2022-12-12 21:42:21,901 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-12 21:42:21,902 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-12 21:42:21,902 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-12 21:42:21,902 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-12 21:42:21,907 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 09:42:21" (1/1) ... [2022-12-12 21:42:21,932 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 09:42:21" (1/1) ... [2022-12-12 21:42:21,953 INFO L138 Inliner]: procedures = 176, calls = 53, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 71 [2022-12-12 21:42:21,953 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-12 21:42:21,954 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-12 21:42:21,954 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-12 21:42:21,954 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-12 21:42:21,961 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 09:42:21" (1/1) ... [2022-12-12 21:42:21,961 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 09:42:21" (1/1) ... [2022-12-12 21:42:21,972 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 09:42:21" (1/1) ... [2022-12-12 21:42:21,972 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 09:42:21" (1/1) ... [2022-12-12 21:42:21,976 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 09:42:21" (1/1) ... [2022-12-12 21:42:21,977 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 09:42:21" (1/1) ... [2022-12-12 21:42:21,978 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 09:42:21" (1/1) ... [2022-12-12 21:42:21,979 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 09:42:21" (1/1) ... [2022-12-12 21:42:21,981 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-12 21:42:21,981 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-12 21:42:21,982 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-12 21:42:21,982 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-12 21:42:21,982 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 09:42:21" (1/1) ... [2022-12-12 21:42:21,986 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-12 21:42:21,996 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 21:42:22,014 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-12 21:42:22,021 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-12 21:42:22,042 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-12 21:42:22,043 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-12 21:42:22,043 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-12 21:42:22,043 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-12 21:42:22,043 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-12 21:42:22,043 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2022-12-12 21:42:22,043 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2022-12-12 21:42:22,043 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2022-12-12 21:42:22,043 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2022-12-12 21:42:22,043 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2022-12-12 21:42:22,043 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2022-12-12 21:42:22,043 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-12 21:42:22,043 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-12 21:42:22,044 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-12 21:42:22,044 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-12 21:42:22,045 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2022-12-12 21:42:22,185 INFO L236 CfgBuilder]: Building ICFG [2022-12-12 21:42:22,186 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-12 21:42:22,396 INFO L277 CfgBuilder]: Performing block encoding [2022-12-12 21:42:22,401 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-12 21:42:22,401 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-12 21:42:22,403 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.12 09:42:22 BoogieIcfgContainer [2022-12-12 21:42:22,403 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-12 21:42:22,405 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-12 21:42:22,405 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-12 21:42:22,419 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-12 21:42:22,420 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.12 09:42:21" (1/3) ... [2022-12-12 21:42:22,420 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@535a3301 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.12 09:42:22, skipping insertion in model container [2022-12-12 21:42:22,420 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 09:42:21" (2/3) ... [2022-12-12 21:42:22,421 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@535a3301 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.12 09:42:22, skipping insertion in model container [2022-12-12 21:42:22,421 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.12 09:42:22" (3/3) ... [2022-12-12 21:42:22,422 INFO L112 eAbstractionObserver]: Analyzing ICFG safe014_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2022-12-12 21:42:22,463 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-12 21:42:22,463 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-12 21:42:22,463 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-12 21:42:22,533 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-12-12 21:42:22,565 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 93 places, 85 transitions, 185 flow [2022-12-12 21:42:22,611 INFO L130 PetriNetUnfolder]: 2/82 cut-off events. [2022-12-12 21:42:22,611 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-12 21:42:22,615 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. [2022-12-12 21:42:22,615 INFO L82 GeneralOperation]: Start removeDead. Operand has 93 places, 85 transitions, 185 flow [2022-12-12 21:42:22,620 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 79 places, 70 transitions, 149 flow [2022-12-12 21:42:22,621 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-12 21:42:22,638 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 79 places, 70 transitions, 149 flow [2022-12-12 21:42:22,642 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 79 places, 70 transitions, 149 flow [2022-12-12 21:42:22,666 INFO L130 PetriNetUnfolder]: 1/70 cut-off events. [2022-12-12 21:42:22,666 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-12 21:42:22,666 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80 conditions, 70 events. 1/70 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 38 event pairs, 0 based on Foata normal form. 0/69 useless extension candidates. Maximal degree in co-relation 52. Up to 2 conditions per place. [2022-12-12 21:42:22,669 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 79 places, 70 transitions, 149 flow [2022-12-12 21:42:22,669 INFO L226 LiptonReduction]: Number of co-enabled transitions 1044 [2022-12-12 21:42:24,454 INFO L241 LiptonReduction]: Total number of compositions: 53 [2022-12-12 21:42:24,464 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-12 21:42:24,469 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;@4b8fd577, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, Conditionality=CONDITIONAL_DISJUNCTIVE, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-12 21:42:24,469 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-12-12 21:42:24,472 INFO L130 PetriNetUnfolder]: 0/18 cut-off events. [2022-12-12 21:42:24,472 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-12 21:42:24,472 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 21:42:24,473 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 21:42:24,473 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)] === [2022-12-12 21:42:24,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 21:42:24,476 INFO L85 PathProgramCache]: Analyzing trace with hash -1488658015, now seen corresponding path program 1 times [2022-12-12 21:42:24,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 21:42:24,483 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400011257] [2022-12-12 21:42:24,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 21:42:24,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 21:42:24,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 21:42:24,845 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 21:42:24,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 21:42:24,849 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400011257] [2022-12-12 21:42:24,850 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1400011257] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 21:42:24,850 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 21:42:24,850 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-12 21:42:24,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806168634] [2022-12-12 21:42:24,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 21:42:24,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-12 21:42:24,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 21:42:24,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-12 21:42:24,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-12 21:42:24,879 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 27 [2022-12-12 21:42:24,880 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 27 transitions, 63 flow. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 21:42:24,881 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 21:42:24,881 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 27 [2022-12-12 21:42:24,881 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 21:42:25,107 INFO L130 PetriNetUnfolder]: 996/1734 cut-off events. [2022-12-12 21:42:25,107 INFO L131 PetriNetUnfolder]: For 36/36 co-relation queries the response was YES. [2022-12-12 21:42:25,113 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3379 conditions, 1734 events. 996/1734 cut-off events. For 36/36 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 10205 event pairs, 369 based on Foata normal form. 69/1432 useless extension candidates. Maximal degree in co-relation 3368. Up to 932 conditions per place. [2022-12-12 21:42:25,123 INFO L137 encePairwiseOnDemand]: 19/27 looper letters, 29 selfloop transitions, 6 changer transitions 0/42 dead transitions. [2022-12-12 21:42:25,123 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 42 transitions, 169 flow [2022-12-12 21:42:25,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-12 21:42:25,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-12 21:42:25,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 59 transitions. [2022-12-12 21:42:25,131 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7283950617283951 [2022-12-12 21:42:25,134 INFO L295 CegarLoopForPetriNet]: 36 programPoint places, 2 predicate places. [2022-12-12 21:42:25,134 INFO L82 GeneralOperation]: Start removeDead. Operand has 38 places, 42 transitions, 169 flow [2022-12-12 21:42:25,141 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 38 places, 42 transitions, 169 flow [2022-12-12 21:42:25,142 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 42 transitions, 169 flow [2022-12-12 21:42:25,143 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 21:42:25,143 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 21:42:25,143 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 21:42:25,143 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-12 21:42:25,143 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)] === [2022-12-12 21:42:25,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 21:42:25,144 INFO L85 PathProgramCache]: Analyzing trace with hash 1096242255, now seen corresponding path program 1 times [2022-12-12 21:42:25,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 21:42:25,144 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337487204] [2022-12-12 21:42:25,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 21:42:25,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 21:42:25,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 21:42:25,227 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 21:42:25,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 21:42:25,227 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [337487204] [2022-12-12 21:42:25,227 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [337487204] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 21:42:25,227 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 21:42:25,228 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-12 21:42:25,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852604808] [2022-12-12 21:42:25,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 21:42:25,228 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-12 21:42:25,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 21:42:25,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-12 21:42:25,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-12 21:42:25,229 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 27 [2022-12-12 21:42:25,229 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 42 transitions, 169 flow. Second operand has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 21:42:25,229 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 21:42:25,229 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 27 [2022-12-12 21:42:25,230 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 21:42:25,368 INFO L130 PetriNetUnfolder]: 929/1639 cut-off events. [2022-12-12 21:42:25,369 INFO L131 PetriNetUnfolder]: For 70/70 co-relation queries the response was YES. [2022-12-12 21:42:25,370 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4643 conditions, 1639 events. 929/1639 cut-off events. For 70/70 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 9690 event pairs, 119 based on Foata normal form. 17/1302 useless extension candidates. Maximal degree in co-relation 4629. Up to 858 conditions per place. [2022-12-12 21:42:25,376 INFO L137 encePairwiseOnDemand]: 20/27 looper letters, 46 selfloop transitions, 7 changer transitions 0/60 dead transitions. [2022-12-12 21:42:25,377 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 60 transitions, 347 flow [2022-12-12 21:42:25,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-12 21:42:25,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-12 21:42:25,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 68 transitions. [2022-12-12 21:42:25,378 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.6296296296296297 [2022-12-12 21:42:25,378 INFO L295 CegarLoopForPetriNet]: 36 programPoint places, 5 predicate places. [2022-12-12 21:42:25,379 INFO L82 GeneralOperation]: Start removeDead. Operand has 41 places, 60 transitions, 347 flow [2022-12-12 21:42:25,385 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 41 places, 60 transitions, 347 flow [2022-12-12 21:42:25,385 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 60 transitions, 347 flow [2022-12-12 21:42:25,385 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 21:42:25,386 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 21:42:25,386 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 21:42:25,386 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-12 21:42:25,386 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)] === [2022-12-12 21:42:25,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 21:42:25,386 INFO L85 PathProgramCache]: Analyzing trace with hash 1096241449, now seen corresponding path program 1 times [2022-12-12 21:42:25,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 21:42:25,387 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191114670] [2022-12-12 21:42:25,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 21:42:25,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 21:42:25,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 21:42:25,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 21:42:25,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 21:42:25,461 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [191114670] [2022-12-12 21:42:25,461 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [191114670] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 21:42:25,461 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 21:42:25,461 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-12 21:42:25,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228678728] [2022-12-12 21:42:25,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 21:42:25,462 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-12 21:42:25,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 21:42:25,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-12 21:42:25,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-12 21:42:25,462 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 27 [2022-12-12 21:42:25,463 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 60 transitions, 347 flow. Second operand has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 21:42:25,463 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 21:42:25,463 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 27 [2022-12-12 21:42:25,463 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 21:42:25,613 INFO L130 PetriNetUnfolder]: 887/1580 cut-off events. [2022-12-12 21:42:25,613 INFO L131 PetriNetUnfolder]: For 187/187 co-relation queries the response was YES. [2022-12-12 21:42:25,615 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5863 conditions, 1580 events. 887/1580 cut-off events. For 187/187 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 9378 event pairs, 43 based on Foata normal form. 15/1250 useless extension candidates. Maximal degree in co-relation 5846. Up to 803 conditions per place. [2022-12-12 21:42:25,623 INFO L137 encePairwiseOnDemand]: 20/27 looper letters, 66 selfloop transitions, 12 changer transitions 0/85 dead transitions. [2022-12-12 21:42:25,624 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 85 transitions, 662 flow [2022-12-12 21:42:25,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-12 21:42:25,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-12 21:42:25,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 75 transitions. [2022-12-12 21:42:25,625 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.6944444444444444 [2022-12-12 21:42:25,625 INFO L295 CegarLoopForPetriNet]: 36 programPoint places, 8 predicate places. [2022-12-12 21:42:25,625 INFO L82 GeneralOperation]: Start removeDead. Operand has 44 places, 85 transitions, 662 flow [2022-12-12 21:42:25,634 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 44 places, 85 transitions, 662 flow [2022-12-12 21:42:25,634 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 85 transitions, 662 flow [2022-12-12 21:42:25,634 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 21:42:25,634 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 21:42:25,634 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 21:42:25,634 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-12 21:42:25,635 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)] === [2022-12-12 21:42:25,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 21:42:25,635 INFO L85 PathProgramCache]: Analyzing trace with hash -376228805, now seen corresponding path program 1 times [2022-12-12 21:42:25,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 21:42:25,635 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1337917734] [2022-12-12 21:42:25,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 21:42:25,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 21:42:25,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 21:42:25,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 21:42:25,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 21:42:25,714 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1337917734] [2022-12-12 21:42:25,714 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1337917734] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 21:42:25,715 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 21:42:25,715 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-12 21:42:25,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086886361] [2022-12-12 21:42:25,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 21:42:25,715 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-12 21:42:25,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 21:42:25,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-12 21:42:25,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-12 21:42:25,716 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 27 [2022-12-12 21:42:25,716 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 85 transitions, 662 flow. Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 21:42:25,716 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 21:42:25,716 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 27 [2022-12-12 21:42:25,716 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 21:42:25,827 INFO L130 PetriNetUnfolder]: 841/1485 cut-off events. [2022-12-12 21:42:25,828 INFO L131 PetriNetUnfolder]: For 354/366 co-relation queries the response was YES. [2022-12-12 21:42:25,830 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6887 conditions, 1485 events. 841/1485 cut-off events. For 354/366 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 8507 event pairs, 72 based on Foata normal form. 16/1170 useless extension candidates. Maximal degree in co-relation 6867. Up to 1176 conditions per place. [2022-12-12 21:42:25,838 INFO L137 encePairwiseOnDemand]: 24/27 looper letters, 102 selfloop transitions, 7 changer transitions 0/116 dead transitions. [2022-12-12 21:42:25,838 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 116 transitions, 1137 flow [2022-12-12 21:42:25,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-12 21:42:25,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-12 21:42:25,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 51 transitions. [2022-12-12 21:42:25,839 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.6296296296296297 [2022-12-12 21:42:25,840 INFO L295 CegarLoopForPetriNet]: 36 programPoint places, 10 predicate places. [2022-12-12 21:42:25,840 INFO L82 GeneralOperation]: Start removeDead. Operand has 46 places, 116 transitions, 1137 flow [2022-12-12 21:42:25,849 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 46 places, 116 transitions, 1137 flow [2022-12-12 21:42:25,849 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 116 transitions, 1137 flow [2022-12-12 21:42:25,850 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 21:42:25,850 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 21:42:25,850 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 21:42:25,850 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-12 21:42:25,850 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)] === [2022-12-12 21:42:25,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 21:42:25,850 INFO L85 PathProgramCache]: Analyzing trace with hash 1221816279, now seen corresponding path program 1 times [2022-12-12 21:42:25,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 21:42:25,850 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477457437] [2022-12-12 21:42:25,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 21:42:25,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 21:42:25,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 21:42:25,908 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 21:42:25,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 21:42:25,909 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477457437] [2022-12-12 21:42:25,909 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1477457437] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 21:42:25,909 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 21:42:25,909 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-12 21:42:25,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127844041] [2022-12-12 21:42:25,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 21:42:25,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-12 21:42:25,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 21:42:25,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-12 21:42:25,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-12 21:42:25,910 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 27 [2022-12-12 21:42:25,910 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 116 transitions, 1137 flow. Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 21:42:25,910 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 21:42:25,910 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 27 [2022-12-12 21:42:25,910 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 21:42:26,052 INFO L130 PetriNetUnfolder]: 800/1440 cut-off events. [2022-12-12 21:42:26,053 INFO L131 PetriNetUnfolder]: For 564/578 co-relation queries the response was YES. [2022-12-12 21:42:26,055 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7861 conditions, 1440 events. 800/1440 cut-off events. For 564/578 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 8343 event pairs, 24 based on Foata normal form. 20/1142 useless extension candidates. Maximal degree in co-relation 7838. Up to 1114 conditions per place. [2022-12-12 21:42:26,064 INFO L137 encePairwiseOnDemand]: 24/27 looper letters, 121 selfloop transitions, 13 changer transitions 1/142 dead transitions. [2022-12-12 21:42:26,064 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 142 transitions, 1673 flow [2022-12-12 21:42:26,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-12 21:42:26,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-12 21:42:26,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 51 transitions. [2022-12-12 21:42:26,065 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.6296296296296297 [2022-12-12 21:42:26,066 INFO L295 CegarLoopForPetriNet]: 36 programPoint places, 12 predicate places. [2022-12-12 21:42:26,066 INFO L82 GeneralOperation]: Start removeDead. Operand has 48 places, 142 transitions, 1673 flow [2022-12-12 21:42:26,076 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 48 places, 141 transitions, 1661 flow [2022-12-12 21:42:26,076 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 141 transitions, 1661 flow [2022-12-12 21:42:26,076 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 21:42:26,076 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 21:42:26,077 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 21:42:26,077 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-12 21:42:26,077 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)] === [2022-12-12 21:42:26,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 21:42:26,077 INFO L85 PathProgramCache]: Analyzing trace with hash -778443641, now seen corresponding path program 1 times [2022-12-12 21:42:26,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 21:42:26,077 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662608015] [2022-12-12 21:42:26,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 21:42:26,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 21:42:26,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 21:42:26,170 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 21:42:26,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 21:42:26,171 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662608015] [2022-12-12 21:42:26,171 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1662608015] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 21:42:26,171 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 21:42:26,171 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-12 21:42:26,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438548251] [2022-12-12 21:42:26,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 21:42:26,171 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-12 21:42:26,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 21:42:26,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-12 21:42:26,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-12 21:42:26,172 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 27 [2022-12-12 21:42:26,172 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 141 transitions, 1661 flow. Second operand has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 21:42:26,172 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 21:42:26,172 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 27 [2022-12-12 21:42:26,172 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 21:42:26,356 INFO L130 PetriNetUnfolder]: 1211/2131 cut-off events. [2022-12-12 21:42:26,356 INFO L131 PetriNetUnfolder]: For 2993/2993 co-relation queries the response was YES. [2022-12-12 21:42:26,360 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13449 conditions, 2131 events. 1211/2131 cut-off events. For 2993/2993 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 12336 event pairs, 18 based on Foata normal form. 48/1675 useless extension candidates. Maximal degree in co-relation 13423. Up to 1639 conditions per place. [2022-12-12 21:42:26,368 INFO L137 encePairwiseOnDemand]: 20/27 looper letters, 78 selfloop transitions, 11 changer transitions 125/220 dead transitions. [2022-12-12 21:42:26,368 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 220 transitions, 3037 flow [2022-12-12 21:42:26,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-12 21:42:26,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-12 21:42:26,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 81 transitions. [2022-12-12 21:42:26,370 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.6 [2022-12-12 21:42:26,372 INFO L295 CegarLoopForPetriNet]: 36 programPoint places, 16 predicate places. [2022-12-12 21:42:26,373 INFO L82 GeneralOperation]: Start removeDead. Operand has 52 places, 220 transitions, 3037 flow [2022-12-12 21:42:26,379 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 52 places, 95 transitions, 1263 flow [2022-12-12 21:42:26,380 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 95 transitions, 1263 flow [2022-12-12 21:42:26,380 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 21:42:26,380 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 21:42:26,380 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 21:42:26,380 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-12 21:42:26,380 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)] === [2022-12-12 21:42:26,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 21:42:26,381 INFO L85 PathProgramCache]: Analyzing trace with hash 1075977845, now seen corresponding path program 1 times [2022-12-12 21:42:26,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 21:42:26,381 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [127348365] [2022-12-12 21:42:26,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 21:42:26,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 21:42:26,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 21:42:26,487 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 21:42:26,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 21:42:26,487 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [127348365] [2022-12-12 21:42:26,488 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [127348365] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 21:42:26,488 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 21:42:26,489 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-12 21:42:26,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246373292] [2022-12-12 21:42:26,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 21:42:26,490 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-12 21:42:26,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 21:42:26,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-12 21:42:26,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-12 21:42:26,491 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 27 [2022-12-12 21:42:26,491 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 95 transitions, 1263 flow. Second operand has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 21:42:26,491 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 21:42:26,491 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 27 [2022-12-12 21:42:26,491 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 21:42:26,676 INFO L130 PetriNetUnfolder]: 1211/2018 cut-off events. [2022-12-12 21:42:26,676 INFO L131 PetriNetUnfolder]: For 4323/4377 co-relation queries the response was YES. [2022-12-12 21:42:26,680 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13325 conditions, 2018 events. 1211/2018 cut-off events. For 4323/4377 co-relation queries the response was YES. Maximal size of possible extension queue 221. Compared 11508 event pairs, 173 based on Foata normal form. 99/1604 useless extension candidates. Maximal degree in co-relation 13296. Up to 1466 conditions per place. [2022-12-12 21:42:26,688 INFO L137 encePairwiseOnDemand]: 15/27 looper letters, 70 selfloop transitions, 40 changer transitions 107/231 dead transitions. [2022-12-12 21:42:26,688 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 231 transitions, 3494 flow [2022-12-12 21:42:26,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-12 21:42:26,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-12 21:42:26,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 91 transitions. [2022-12-12 21:42:26,690 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.674074074074074 [2022-12-12 21:42:26,691 INFO L295 CegarLoopForPetriNet]: 36 programPoint places, 20 predicate places. [2022-12-12 21:42:26,691 INFO L82 GeneralOperation]: Start removeDead. Operand has 56 places, 231 transitions, 3494 flow [2022-12-12 21:42:26,702 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 53 places, 124 transitions, 1868 flow [2022-12-12 21:42:26,702 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 124 transitions, 1868 flow [2022-12-12 21:42:26,702 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 21:42:26,702 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 21:42:26,702 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 21:42:26,703 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-12 21:42:26,703 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)] === [2022-12-12 21:42:26,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 21:42:26,703 INFO L85 PathProgramCache]: Analyzing trace with hash -1501137987, now seen corresponding path program 1 times [2022-12-12 21:42:26,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 21:42:26,703 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2133146981] [2022-12-12 21:42:26,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 21:42:26,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 21:42:26,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 21:42:26,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 21:42:26,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 21:42:26,794 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2133146981] [2022-12-12 21:42:26,794 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2133146981] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 21:42:26,794 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 21:42:26,794 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-12 21:42:26,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736226566] [2022-12-12 21:42:26,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 21:42:26,794 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-12 21:42:26,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 21:42:26,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-12 21:42:26,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-12 21:42:26,795 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 27 [2022-12-12 21:42:26,795 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 124 transitions, 1868 flow. Second operand has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 21:42:26,795 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 21:42:26,795 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 27 [2022-12-12 21:42:26,795 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 21:42:26,972 INFO L130 PetriNetUnfolder]: 764/1433 cut-off events. [2022-12-12 21:42:26,972 INFO L131 PetriNetUnfolder]: For 3051/3183 co-relation queries the response was YES. [2022-12-12 21:42:26,974 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10842 conditions, 1433 events. 764/1433 cut-off events. For 3051/3183 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 8787 event pairs, 54 based on Foata normal form. 130/1236 useless extension candidates. Maximal degree in co-relation 10810. Up to 1276 conditions per place. [2022-12-12 21:42:26,979 INFO L137 encePairwiseOnDemand]: 15/27 looper letters, 49 selfloop transitions, 59 changer transitions 75/197 dead transitions. [2022-12-12 21:42:26,979 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 197 transitions, 3294 flow [2022-12-12 21:42:26,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-12 21:42:26,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-12 21:42:26,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 107 transitions. [2022-12-12 21:42:26,980 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.6604938271604939 [2022-12-12 21:42:26,980 INFO L295 CegarLoopForPetriNet]: 36 programPoint places, 22 predicate places. [2022-12-12 21:42:26,981 INFO L82 GeneralOperation]: Start removeDead. Operand has 58 places, 197 transitions, 3294 flow [2022-12-12 21:42:26,986 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 56 places, 122 transitions, 2016 flow [2022-12-12 21:42:26,986 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 122 transitions, 2016 flow [2022-12-12 21:42:26,986 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 21:42:26,986 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 21:42:26,986 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 21:42:26,987 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-12 21:42:26,987 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-12 21:42:26,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 21:42:26,987 INFO L85 PathProgramCache]: Analyzing trace with hash 2075515523, now seen corresponding path program 1 times [2022-12-12 21:42:26,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 21:42:26,987 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096720930] [2022-12-12 21:42:26,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 21:42:26,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 21:42:26,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 21:42:27,069 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 21:42:27,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 21:42:27,069 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2096720930] [2022-12-12 21:42:27,069 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2096720930] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 21:42:27,069 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 21:42:27,069 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-12 21:42:27,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105210577] [2022-12-12 21:42:27,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 21:42:27,070 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-12 21:42:27,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 21:42:27,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-12 21:42:27,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-12-12 21:42:27,070 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 27 [2022-12-12 21:42:27,071 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 122 transitions, 2016 flow. Second operand has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 21:42:27,071 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 21:42:27,071 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 27 [2022-12-12 21:42:27,071 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 21:42:27,192 INFO L130 PetriNetUnfolder]: 312/717 cut-off events. [2022-12-12 21:42:27,192 INFO L131 PetriNetUnfolder]: For 1945/2055 co-relation queries the response was YES. [2022-12-12 21:42:27,193 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6068 conditions, 717 events. 312/717 cut-off events. For 1945/2055 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 4440 event pairs, 0 based on Foata normal form. 121/695 useless extension candidates. Maximal degree in co-relation 6033. Up to 617 conditions per place. [2022-12-12 21:42:27,196 INFO L137 encePairwiseOnDemand]: 15/27 looper letters, 26 selfloop transitions, 54 changer transitions 49/136 dead transitions. [2022-12-12 21:42:27,196 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 136 transitions, 2476 flow [2022-12-12 21:42:27,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-12 21:42:27,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-12 21:42:27,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 101 transitions. [2022-12-12 21:42:27,197 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5343915343915344 [2022-12-12 21:42:27,197 INFO L295 CegarLoopForPetriNet]: 36 programPoint places, 26 predicate places. [2022-12-12 21:42:27,197 INFO L82 GeneralOperation]: Start removeDead. Operand has 62 places, 136 transitions, 2476 flow [2022-12-12 21:42:27,200 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 60 places, 87 transitions, 1568 flow [2022-12-12 21:42:27,200 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 87 transitions, 1568 flow [2022-12-12 21:42:27,201 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 21:42:27,201 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 21:42:27,201 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 21:42:27,201 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-12 21:42:27,201 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-12 21:42:27,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 21:42:27,201 INFO L85 PathProgramCache]: Analyzing trace with hash 1849300542, now seen corresponding path program 1 times [2022-12-12 21:42:27,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 21:42:27,201 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2141907250] [2022-12-12 21:42:27,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 21:42:27,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 21:42:27,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 21:42:27,330 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 21:42:27,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 21:42:27,330 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2141907250] [2022-12-12 21:42:27,330 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2141907250] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 21:42:27,330 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 21:42:27,330 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-12 21:42:27,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79213461] [2022-12-12 21:42:27,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 21:42:27,331 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-12 21:42:27,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 21:42:27,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-12 21:42:27,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-12 21:42:27,331 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 27 [2022-12-12 21:42:27,332 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 87 transitions, 1568 flow. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 21:42:27,332 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 21:42:27,332 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 27 [2022-12-12 21:42:27,332 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 21:42:27,449 INFO L130 PetriNetUnfolder]: 263/567 cut-off events. [2022-12-12 21:42:27,450 INFO L131 PetriNetUnfolder]: For 1984/2042 co-relation queries the response was YES. [2022-12-12 21:42:27,451 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5271 conditions, 567 events. 263/567 cut-off events. For 1984/2042 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 3105 event pairs, 0 based on Foata normal form. 36/463 useless extension candidates. Maximal degree in co-relation 5233. Up to 507 conditions per place. [2022-12-12 21:42:27,453 INFO L137 encePairwiseOnDemand]: 21/27 looper letters, 47 selfloop transitions, 7 changer transitions 50/115 dead transitions. [2022-12-12 21:42:27,453 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 115 transitions, 2328 flow [2022-12-12 21:42:27,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-12 21:42:27,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-12 21:42:27,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 88 transitions. [2022-12-12 21:42:27,455 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5432098765432098 [2022-12-12 21:42:27,455 INFO L295 CegarLoopForPetriNet]: 36 programPoint places, 29 predicate places. [2022-12-12 21:42:27,456 INFO L82 GeneralOperation]: Start removeDead. Operand has 65 places, 115 transitions, 2328 flow [2022-12-12 21:42:27,459 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 62 places, 65 transitions, 1263 flow [2022-12-12 21:42:27,459 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 65 transitions, 1263 flow [2022-12-12 21:42:27,459 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 21:42:27,459 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 21:42:27,459 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 21:42:27,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-12 21:42:27,459 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-12 21:42:27,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 21:42:27,460 INFO L85 PathProgramCache]: Analyzing trace with hash -959860526, now seen corresponding path program 2 times [2022-12-12 21:42:27,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 21:42:27,460 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580594150] [2022-12-12 21:42:27,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 21:42:27,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 21:42:27,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 21:42:27,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 21:42:27,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 21:42:27,567 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [580594150] [2022-12-12 21:42:27,567 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [580594150] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 21:42:27,567 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 21:42:27,567 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-12 21:42:27,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967207206] [2022-12-12 21:42:27,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 21:42:27,567 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-12 21:42:27,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 21:42:27,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-12 21:42:27,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-12 21:42:27,568 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 27 [2022-12-12 21:42:27,568 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 65 transitions, 1263 flow. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 21:42:27,568 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 21:42:27,568 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 27 [2022-12-12 21:42:27,568 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 21:42:27,607 INFO L130 PetriNetUnfolder]: 130/267 cut-off events. [2022-12-12 21:42:27,607 INFO L131 PetriNetUnfolder]: For 1213/1235 co-relation queries the response was YES. [2022-12-12 21:42:27,608 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2684 conditions, 267 events. 130/267 cut-off events. For 1213/1235 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 1130 event pairs, 0 based on Foata normal form. 31/230 useless extension candidates. Maximal degree in co-relation 2643. Up to 241 conditions per place. [2022-12-12 21:42:27,608 INFO L137 encePairwiseOnDemand]: 24/27 looper letters, 0 selfloop transitions, 0 changer transitions 64/64 dead transitions. [2022-12-12 21:42:27,608 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 64 transitions, 1347 flow [2022-12-12 21:42:27,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-12 21:42:27,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-12 21:42:27,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 51 transitions. [2022-12-12 21:42:27,609 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.4722222222222222 [2022-12-12 21:42:27,610 INFO L295 CegarLoopForPetriNet]: 36 programPoint places, 28 predicate places. [2022-12-12 21:42:27,610 INFO L82 GeneralOperation]: Start removeDead. Operand has 64 places, 64 transitions, 1347 flow [2022-12-12 21:42:27,610 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 0 places, 0 transitions, 0 flow [2022-12-12 21:42:27,611 INFO L495 AbstractCegarLoop]: Abstraction has has 0 places, 0 transitions, 0 flow [2022-12-12 21:42:27,611 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 21:42:27,613 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2022-12-12 21:42:27,614 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2022-12-12 21:42:27,615 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2022-12-12 21:42:27,615 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2022-12-12 21:42:27,615 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-12 21:42:27,615 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 21:42:27,617 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-12 21:42:27,617 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-12 21:42:27,621 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.12 09:42:27 BasicIcfg [2022-12-12 21:42:27,621 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-12 21:42:27,621 INFO L158 Benchmark]: Toolchain (without parser) took 6175.15ms. Allocated memory was 196.1MB in the beginning and 303.0MB in the end (delta: 107.0MB). Free memory was 170.9MB in the beginning and 217.5MB in the end (delta: -46.6MB). Peak memory consumption was 60.9MB. Max. memory is 8.0GB. [2022-12-12 21:42:27,621 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 196.1MB. Free memory is still 171.9MB. There was no memory consumed. Max. memory is 8.0GB. [2022-12-12 21:42:27,621 INFO L158 Benchmark]: CACSL2BoogieTranslator took 454.02ms. Allocated memory is still 196.1MB. Free memory was 170.4MB in the beginning and 147.2MB in the end (delta: 23.2MB). Peak memory consumption was 22.0MB. Max. memory is 8.0GB. [2022-12-12 21:42:27,622 INFO L158 Benchmark]: Boogie Procedure Inliner took 51.26ms. Allocated memory is still 196.1MB. Free memory was 147.2MB in the beginning and 145.2MB in the end (delta: 2.0MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2022-12-12 21:42:27,623 INFO L158 Benchmark]: Boogie Preprocessor took 27.02ms. Allocated memory is still 196.1MB. Free memory was 145.2MB in the beginning and 143.7MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-12-12 21:42:27,623 INFO L158 Benchmark]: RCFGBuilder took 422.03ms. Allocated memory is still 196.1MB. Free memory was 143.7MB in the beginning and 130.6MB in the end (delta: 13.1MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. [2022-12-12 21:42:27,623 INFO L158 Benchmark]: TraceAbstraction took 5215.44ms. Allocated memory was 196.1MB in the beginning and 303.0MB in the end (delta: 107.0MB). Free memory was 129.5MB in the beginning and 217.5MB in the end (delta: -87.9MB). Peak memory consumption was 20.0MB. Max. memory is 8.0GB. [2022-12-12 21:42:27,624 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 196.1MB. Free memory is still 171.9MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 454.02ms. Allocated memory is still 196.1MB. Free memory was 170.4MB in the beginning and 147.2MB in the end (delta: 23.2MB). Peak memory consumption was 22.0MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 51.26ms. Allocated memory is still 196.1MB. Free memory was 147.2MB in the beginning and 145.2MB in the end (delta: 2.0MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 27.02ms. Allocated memory is still 196.1MB. Free memory was 145.2MB in the beginning and 143.7MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 422.03ms. Allocated memory is still 196.1MB. Free memory was 143.7MB in the beginning and 130.6MB in the end (delta: 13.1MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. * TraceAbstraction took 5215.44ms. Allocated memory was 196.1MB in the beginning and 303.0MB in the end (delta: 107.0MB). Free memory was 129.5MB in the beginning and 217.5MB in the end (delta: -87.9MB). Peak memory consumption was 20.0MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.8s, 79 PlacesBefore, 36 PlacesAfterwards, 70 TransitionsBefore, 27 TransitionsAfterwards, 1044 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 1 ConcurrentSequentialCompositions, 20 TrivialYvCompositions, 32 ConcurrentYvCompositions, 0 ChoiceCompositions, 53 TotalNumberOfCompositions, Independence Relation Statistics: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 972, independent: 919, independent conditional: 919, independent unconditional: 0, dependent: 53, dependent conditional: 53, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 972, independent: 919, independent conditional: 0, independent unconditional: 919, dependent: 53, dependent conditional: 0, dependent unconditional: 53, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 972, independent: 919, independent conditional: 0, independent unconditional: 919, dependent: 53, dependent conditional: 0, dependent unconditional: 53, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 972, independent: 919, independent conditional: 0, independent unconditional: 919, dependent: 53, dependent conditional: 0, dependent unconditional: 53, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 740, independent: 702, independent conditional: 0, independent unconditional: 702, dependent: 38, dependent conditional: 0, dependent unconditional: 38, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 740, independent: 684, independent conditional: 0, independent unconditional: 684, dependent: 56, dependent conditional: 0, dependent unconditional: 56, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 56, independent: 18, independent conditional: 0, independent unconditional: 18, dependent: 38, dependent conditional: 0, dependent unconditional: 38, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 111, independent: 36, independent conditional: 0, independent unconditional: 36, dependent: 76, dependent conditional: 0, dependent unconditional: 76, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 972, independent: 217, independent conditional: 0, independent unconditional: 217, dependent: 15, dependent conditional: 0, dependent unconditional: 15, unknown: 740, unknown conditional: 0, unknown unconditional: 740] , Statistics on independence cache: Total cache size (in pairs): 1086, Positive cache size: 1048, Positive conditional cache size: 0, Positive unconditional cache size: 1048, Negative cache size: 38, Negative conditional cache size: 0, Negative unconditional cache size: 38, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0, Eliminated conditions: 0, Maximal queried relation: -1 - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 108 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.1s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 5.1s, OverallIterations: 11, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.9s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 308 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 308 mSDsluCounter, 22 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 5 mSDsCounter, 57 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 645 IncrementalHoareTripleChecker+Invalid, 702 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 57 mSolverCounterUnsat, 17 mSDtfsCounter, 645 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 33 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2016occurred in iteration=8, InterpolantAutomatonStates: 50, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 11 MinimizatonAttempts, 8010 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 135 NumberOfCodeBlocks, 135 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 124 ConstructedInterpolants, 0 QuantifiedInterpolants, 654 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 11 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! [2022-12-12 21:42:27,648 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...